Start Magent beta overhaul

backend/app/services/diagnostics.py

@@ -0,0 +1,735 @@
+from __future__ import annotations
+
+import asyncio
+from dataclasses import dataclass
+from datetime import datetime, timezone
+from time import perf_counter
+from typing import Any, Awaitable, Callable, Dict, List, Optional, Sequence
+from urllib.parse import urlparse
+
+import httpx
+
+from ..clients.jellyfin import JellyfinClient
+from ..clients.jellyseerr import JellyseerrClient
+from ..clients.prowlarr import ProwlarrClient
+from ..clients.qbittorrent import QBittorrentClient
+from ..clients.radarr import RadarrClient
+from ..clients.sonarr import SonarrClient
+from ..config import settings as env_settings
+from ..db import get_database_diagnostics
+from ..network_security import validate_notification_target_url
+from ..runtime import get_runtime_settings
+from .invite_email import send_test_email, smtp_email_config_ready, smtp_email_delivery_warning
+
+
+DiagnosticRunner = Callable[[], Awaitable[Dict[str, Any]]]
+
+
+@dataclass(frozen=True)
+class DiagnosticCheck:
+    key: str
+    label: str
+    category: str
+    description: str
+    live_safe: bool
+    configured: bool
+    config_detail: str
+    target: Optional[str]
+    runner: DiagnosticRunner
+
+
+def _now_iso() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+def _clean_text(value: Any, fallback: str = "") -> str:
+    if value is None:
+        return fallback
+    if isinstance(value, str):
+        trimmed = value.strip()
+        return trimmed if trimmed else fallback
+    return str(value)
+
+
+def _url_target(url: Optional[str]) -> Optional[str]:
+    raw = _clean_text(url)
+    if not raw:
+        return None
+    try:
+        parsed = urlparse(raw)
+    except Exception:
+        return raw
+    host = parsed.hostname or parsed.netloc or raw
+    if parsed.port:
+        host = f"{host}:{parsed.port}"
+    return host
+
+
+def _host_port_target(host: Optional[str], port: Optional[int]) -> Optional[str]:
+    resolved_host = _clean_text(host)
+    if not resolved_host:
+        return None
+    if port is None:
+        return resolved_host
+    return f"{resolved_host}:{port}"
+
+
+def _http_error_detail(exc: Exception) -> str:
+    if isinstance(exc, httpx.HTTPStatusError):
+        response = exc.response
+        body = ""
+        try:
+            body = response.text.strip()
+        except Exception:
+            body = ""
+        if body:
+            return f"HTTP {response.status_code}: {body}"
+        return f"HTTP {response.status_code}"
+    return str(exc)
+
+
+def _config_status(detail: str) -> str:
+    lowered = detail.lower()
+    if "disabled" in lowered:
+        return "disabled"
+    return "not_configured"
+
+
+def _discord_config_ready(runtime) -> tuple[bool, str]:
+    if not runtime.magent_notify_enabled or not runtime.magent_notify_discord_enabled:
+        return False, "Discord notifications are disabled."
+    webhook_url = _clean_text(runtime.magent_notify_discord_webhook_url) or _clean_text(runtime.discord_webhook_url)
+    if webhook_url:
+        try:
+            validate_notification_target_url(webhook_url)
+        except ValueError as exc:
+            return False, str(exc)
+        return True, "ok"
+    return False, "Discord webhook URL is required."
+
+
+def _telegram_config_ready(runtime) -> tuple[bool, str]:
+    if not runtime.magent_notify_enabled or not runtime.magent_notify_telegram_enabled:
+        return False, "Telegram notifications are disabled."
+    if _clean_text(runtime.magent_notify_telegram_bot_token) and _clean_text(runtime.magent_notify_telegram_chat_id):
+        return True, "ok"
+    return False, "Telegram bot token and chat ID are required."
+
+
+def _webhook_config_ready(runtime) -> tuple[bool, str]:
+    if not runtime.magent_notify_enabled or not runtime.magent_notify_webhook_enabled:
+        return False, "Generic webhook notifications are disabled."
+    webhook_url = _clean_text(runtime.magent_notify_webhook_url)
+    if webhook_url:
+        try:
+            validate_notification_target_url(webhook_url)
+        except ValueError as exc:
+            return False, str(exc)
+        return True, "ok"
+    return False, "Generic webhook URL is required."
+
+
+def _push_config_ready(runtime) -> tuple[bool, str]:
+    if not runtime.magent_notify_enabled or not runtime.magent_notify_push_enabled:
+        return False, "Push notifications are disabled."
+    provider = _clean_text(runtime.magent_notify_push_provider, "ntfy").lower()
+    if provider == "ntfy":
+        push_url = _clean_text(runtime.magent_notify_push_base_url)
+        if push_url and _clean_text(runtime.magent_notify_push_topic):
+            try:
+                validate_notification_target_url(push_url)
+            except ValueError as exc:
+                return False, str(exc)
+            return True, "ok"
+        return False, "ntfy requires a base URL and topic."
+    if provider == "gotify":
+        push_url = _clean_text(runtime.magent_notify_push_base_url)
+        if push_url and _clean_text(runtime.magent_notify_push_token):
+            try:
+                validate_notification_target_url(push_url)
+            except ValueError as exc:
+                return False, str(exc)
+            return True, "ok"
+        return False, "Gotify requires a base URL and app token."
+    if provider == "pushover":
+        if _clean_text(runtime.magent_notify_push_token) and _clean_text(runtime.magent_notify_push_user_key):
+            return True, "ok"
+        return False, "Pushover requires an application token and user key."
+    if provider == "webhook":
+        push_url = _clean_text(runtime.magent_notify_push_base_url)
+        if push_url:
+            try:
+                validate_notification_target_url(push_url)
+            except ValueError as exc:
+                return False, str(exc)
+            return True, "ok"
+        return False, "Webhook relay requires a target URL."
+    if provider == "telegram":
+        return _telegram_config_ready(runtime)
+    if provider == "discord":
+        return _discord_config_ready(runtime)
+    return False, f"Unsupported push provider: {provider or 'unknown'}"
+
+
+def _summary_from_results(results: Sequence[Dict[str, Any]]) -> Dict[str, int]:
+    summary = {
+        "total": len(results),
+        "up": 0,
+        "down": 0,
+        "degraded": 0,
+        "not_configured": 0,
+        "disabled": 0,
+    }
+    for result in results:
+        status = str(result.get("status") or "").strip().lower()
+        if status in summary:
+            summary[status] += 1
+    return summary
+
+
+async def _run_http_json_get(
+    url: str,
+    *,
+    headers: Optional[Dict[str, str]] = None,
+    params: Optional[Dict[str, Any]] = None,
+) -> Dict[str, Any]:
+    async with httpx.AsyncClient(timeout=10.0, follow_redirects=True) as client:
+        response = await client.get(url, headers=headers, params=params)
+        response.raise_for_status()
+        payload = response.json()
+    return {"response": payload}
+
+
+async def _run_http_text_get(url: str) -> Dict[str, Any]:
+    async with httpx.AsyncClient(timeout=10.0, follow_redirects=True) as client:
+        response = await client.get(url)
+        response.raise_for_status()
+        body = response.text
+    return {"response": body, "message": f"HTTP {response.status_code}"}
+
+
+async def _run_http_post(
+    url: str,
+    *,
+    json_payload: Optional[Dict[str, Any]] = None,
+    data_payload: Any = None,
+    params: Optional[Dict[str, Any]] = None,
+    headers: Optional[Dict[str, str]] = None,
+) -> Dict[str, Any]:
+    validate_notification_target_url(url)
+    async with httpx.AsyncClient(timeout=15.0, follow_redirects=True) as client:
+        response = await client.post(url, json=json_payload, data=data_payload, params=params, headers=headers)
+        response.raise_for_status()
+        if not response.content:
+            return {"message": f"HTTP {response.status_code}"}
+        content_type = response.headers.get("content-type", "")
+        if "application/json" in content_type.lower():
+            try:
+                return {"response": response.json(), "message": f"HTTP {response.status_code}"}
+            except Exception:
+                pass
+        return {"response": response.text.strip(), "message": f"HTTP {response.status_code}"}
+
+
+async def _run_database_check() -> Dict[str, Any]:
+    detail = await asyncio.to_thread(get_database_diagnostics)
+    integrity = _clean_text(detail.get("integrity_check"), "unknown")
+    requests_cached = detail.get("row_counts", {}).get("requests_cache", 0) if isinstance(detail, dict) else 0
+    wal_size_bytes = detail.get("wal_size_bytes", 0) if isinstance(detail, dict) else 0
+    wal_size_megabytes = round((float(wal_size_bytes or 0) / (1024 * 1024)), 2)
+    status = "up" if integrity == "ok" else "degraded"
+    return {
+        "status": status,
+        "message": f"SQLite {integrity} · {requests_cached} cached requests · WAL {wal_size_megabytes:.2f} MB",
+        "detail": detail,
+    }
+
+
+async def _run_magent_api_check(runtime) -> Dict[str, Any]:
+    base_url = _clean_text(runtime.magent_api_url) or f"http://127.0.0.1:{int(runtime.magent_api_port or 8000)}"
+    result = await _run_http_json_get(f"{base_url.rstrip('/')}/health")
+    payload = result.get("response")
+    build_number = payload.get("build") if isinstance(payload, dict) else None
+    message = "Health endpoint responded"
+    if build_number:
+        message = f"Health endpoint responded (build {build_number})"
+    return {"message": message, "detail": payload}
+
+
+async def _run_magent_web_check(runtime) -> Dict[str, Any]:
+    base_url = _clean_text(runtime.magent_application_url) or f"http://127.0.0.1:{int(runtime.magent_application_port or 3000)}"
+    result = await _run_http_text_get(base_url.rstrip("/"))
+    body = result.get("response")
+    if isinstance(body, str) and "<html" in body.lower():
+        return {"message": "Application page responded", "detail": "html"}
+    return {"status": "degraded", "message": "Application responded with unexpected content"}
+
+
+async def _run_seerr_check(runtime) -> Dict[str, Any]:
+    client = JellyseerrClient(runtime.jellyseerr_base_url, runtime.jellyseerr_api_key)
+    payload = await client.get_status()
+    version = payload.get("version") if isinstance(payload, dict) else None
+    message = "Seerr responded"
+    if version:
+        message = f"Seerr version {version}"
+    return {"message": message, "detail": payload}
+
+
+async def _run_sonarr_check(runtime) -> Dict[str, Any]:
+    client = SonarrClient(runtime.sonarr_base_url, runtime.sonarr_api_key)
+    payload = await client.get_system_status()
+    version = payload.get("version") if isinstance(payload, dict) else None
+    message = "Sonarr responded"
+    if version:
+        message = f"Sonarr version {version}"
+    return {"message": message, "detail": payload}
+
+
+async def _run_radarr_check(runtime) -> Dict[str, Any]:
+    client = RadarrClient(runtime.radarr_base_url, runtime.radarr_api_key)
+    payload = await client.get_system_status()
+    version = payload.get("version") if isinstance(payload, dict) else None
+    message = "Radarr responded"
+    if version:
+        message = f"Radarr version {version}"
+    return {"message": message, "detail": payload}
+
+
+async def _run_prowlarr_check(runtime) -> Dict[str, Any]:
+    client = ProwlarrClient(runtime.prowlarr_base_url, runtime.prowlarr_api_key)
+    payload = await client.get_health()
+    if isinstance(payload, list) and payload:
+        return {
+            "status": "degraded",
+            "message": f"Prowlarr health warnings: {len(payload)}",
+            "detail": payload,
+        }
+    return {"message": "Prowlarr reported healthy", "detail": payload}
+
+
+async def _run_qbittorrent_check(runtime) -> Dict[str, Any]:
+    client = QBittorrentClient(
+        runtime.qbittorrent_base_url,
+        runtime.qbittorrent_username,
+        runtime.qbittorrent_password,
+    )
+    version = await client.get_app_version()
+    message = "qBittorrent responded"
+    if isinstance(version, str) and version:
+        message = f"qBittorrent version {version}"
+    return {"message": message, "detail": version}
+
+
+async def _run_jellyfin_check(runtime) -> Dict[str, Any]:
+    client = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
+    payload = await client.get_system_info()
+    version = payload.get("Version") if isinstance(payload, dict) else None
+    message = "Jellyfin responded"
+    if version:
+        message = f"Jellyfin version {version}"
+    return {"message": message, "detail": payload}
+
+
+async def _run_email_check(recipient_email: Optional[str] = None) -> Dict[str, Any]:
+    result = await send_test_email(recipient_email=recipient_email)
+    recipient = _clean_text(result.get("recipient_email"), "configured recipient")
+    warning = _clean_text(result.get("warning"))
+    if warning:
+        return {
+            "status": "degraded",
+            "message": f"SMTP relay accepted a test for {recipient}, but delivery is not guaranteed.",
+            "detail": result,
+        }
+    return {"message": f"Test email sent to {recipient}", "detail": result}
+
+
+async def _run_discord_check(runtime) -> Dict[str, Any]:
+    webhook_url = _clean_text(runtime.magent_notify_discord_webhook_url) or _clean_text(runtime.discord_webhook_url)
+    payload = {
+        "content": f"{env_settings.app_name} diagnostics ping\nBuild {env_settings.site_build_number or 'unknown'}",
+    }
+    result = await _run_http_post(webhook_url, json_payload=payload)
+    return {"message": "Discord webhook accepted ping", "detail": result.get("response")}
+
+
+async def _run_telegram_check(runtime) -> Dict[str, Any]:
+    bot_token = _clean_text(runtime.magent_notify_telegram_bot_token)
+    chat_id = _clean_text(runtime.magent_notify_telegram_chat_id)
+    url = f"https://api.telegram.org/bot{bot_token}/sendMessage"
+    payload = {
+        "chat_id": chat_id,
+        "text": f"{env_settings.app_name} diagnostics ping\nBuild {env_settings.site_build_number or 'unknown'}",
+    }
+    result = await _run_http_post(url, json_payload=payload)
+    return {"message": "Telegram ping accepted", "detail": result.get("response")}
+
+
+async def _run_webhook_check(runtime) -> Dict[str, Any]:
+    webhook_url = _clean_text(runtime.magent_notify_webhook_url)
+    payload = {
+        "type": "diagnostics.ping",
+        "application": env_settings.app_name,
+        "build": env_settings.site_build_number,
+        "checked_at": _now_iso(),
+    }
+    result = await _run_http_post(webhook_url, json_payload=payload)
+    return {"message": "Webhook accepted ping", "detail": result.get("response")}
+
+
+async def _run_push_check(runtime) -> Dict[str, Any]:
+    provider = _clean_text(runtime.magent_notify_push_provider, "ntfy").lower()
+    message = f"{env_settings.app_name} diagnostics ping"
+    build_suffix = f"Build {env_settings.site_build_number or 'unknown'}"
+
+    if provider == "ntfy":
+        base_url = _clean_text(runtime.magent_notify_push_base_url)
+        topic = _clean_text(runtime.magent_notify_push_topic)
+        result = await _run_http_post(
+            f"{base_url.rstrip('/')}/{topic}",
+            data_payload=f"{message}\n{build_suffix}",
+            headers={"Content-Type": "text/plain; charset=utf-8"},
+        )
+        return {"message": "ntfy push accepted", "detail": result.get("response")}
+
+    if provider == "gotify":
+        base_url = _clean_text(runtime.magent_notify_push_base_url)
+        token = _clean_text(runtime.magent_notify_push_token)
+        result = await _run_http_post(
+            f"{base_url.rstrip('/')}/message",
+            json_payload={"title": env_settings.app_name, "message": build_suffix, "priority": 5},
+            params={"token": token},
+        )
+        return {"message": "Gotify push accepted", "detail": result.get("response")}
+
+    if provider == "pushover":
+        token = _clean_text(runtime.magent_notify_push_token)
+        user_key = _clean_text(runtime.magent_notify_push_user_key)
+        device = _clean_text(runtime.magent_notify_push_device)
+        payload = {
+            "token": token,
+            "user": user_key,
+            "message": f"{message}\n{build_suffix}",
+            "title": env_settings.app_name,
+        }
+        if device:
+            payload["device"] = device
+        result = await _run_http_post("https://api.pushover.net/1/messages.json", data_payload=payload)
+        return {"message": "Pushover push accepted", "detail": result.get("response")}
+
+    if provider == "webhook":
+        base_url = _clean_text(runtime.magent_notify_push_base_url)
+        payload = {
+            "type": "diagnostics.push",
+            "application": env_settings.app_name,
+            "build": env_settings.site_build_number,
+            "checked_at": _now_iso(),
+        }
+        result = await _run_http_post(base_url, json_payload=payload)
+        return {"message": "Push webhook accepted", "detail": result.get("response")}
+
+    if provider == "telegram":
+        return await _run_telegram_check(runtime)
+
+    if provider == "discord":
+        return await _run_discord_check(runtime)
+
+    raise RuntimeError(f"Unsupported push provider: {provider}")
+
+
+def _build_diagnostic_checks(recipient_email: Optional[str] = None) -> List[DiagnosticCheck]:
+    runtime = get_runtime_settings()
+    seerr_target = _url_target(runtime.jellyseerr_base_url)
+    jellyfin_target = _url_target(runtime.jellyfin_base_url)
+    sonarr_target = _url_target(runtime.sonarr_base_url)
+    radarr_target = _url_target(runtime.radarr_base_url)
+    prowlarr_target = _url_target(runtime.prowlarr_base_url)
+    qbittorrent_target = _url_target(runtime.qbittorrent_base_url)
+    application_target = _url_target(runtime.magent_application_url) or _host_port_target("127.0.0.1", runtime.magent_application_port)
+    api_target = _url_target(runtime.magent_api_url) or _host_port_target("127.0.0.1", runtime.magent_api_port)
+    smtp_target = _host_port_target(runtime.magent_notify_email_smtp_host, runtime.magent_notify_email_smtp_port)
+    discord_target = _url_target(runtime.magent_notify_discord_webhook_url) or _url_target(runtime.discord_webhook_url)
+    telegram_target = "api.telegram.org" if _clean_text(runtime.magent_notify_telegram_bot_token) else None
+    webhook_target = _url_target(runtime.magent_notify_webhook_url)
+
+    push_provider = _clean_text(runtime.magent_notify_push_provider, "ntfy").lower()
+    push_target = None
+    if push_provider == "pushover":
+        push_target = "api.pushover.net"
+    elif push_provider == "telegram":
+        push_target = telegram_target or "api.telegram.org"
+    elif push_provider == "discord":
+        push_target = discord_target or "discord.com"
+    else:
+        push_target = _url_target(runtime.magent_notify_push_base_url)
+
+    email_ready, email_detail = smtp_email_config_ready()
+    email_warning = smtp_email_delivery_warning()
+    discord_ready, discord_detail = _discord_config_ready(runtime)
+    telegram_ready, telegram_detail = _telegram_config_ready(runtime)
+    push_ready, push_detail = _push_config_ready(runtime)
+    webhook_ready, webhook_detail = _webhook_config_ready(runtime)
+
+    checks = [
+        DiagnosticCheck(
+            key="magent-web",
+            label="Magent application",
+            category="Application",
+            description="Checks that the frontend application URL is responding.",
+            live_safe=True,
+            configured=True,
+            config_detail="ok",
+            target=application_target,
+            runner=lambda runtime=runtime: _run_magent_web_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="magent-api",
+            label="Magent API",
+            category="Application",
+            description="Checks the Magent API health endpoint.",
+            live_safe=True,
+            configured=True,
+            config_detail="ok",
+            target=api_target,
+            runner=lambda runtime=runtime: _run_magent_api_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="database",
+            label="SQLite database",
+            category="Application",
+            description="Runs SQLite integrity_check against the current Magent database.",
+            live_safe=True,
+            configured=True,
+            config_detail="ok",
+            target="sqlite",
+            runner=_run_database_check,
+        ),
+        DiagnosticCheck(
+            key="seerr",
+            label="Seerr",
+            category="Media services",
+            description="Checks Seerr API reachability and version.",
+            live_safe=True,
+            configured=bool(runtime.jellyseerr_base_url and runtime.jellyseerr_api_key),
+            config_detail="Seerr URL and API key are required.",
+            target=seerr_target,
+            runner=lambda runtime=runtime: _run_seerr_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="jellyfin",
+            label="Jellyfin",
+            category="Media services",
+            description="Checks Jellyfin system info with the configured API key.",
+            live_safe=True,
+            configured=bool(runtime.jellyfin_base_url and runtime.jellyfin_api_key),
+            config_detail="Jellyfin URL and API key are required.",
+            target=jellyfin_target,
+            runner=lambda runtime=runtime: _run_jellyfin_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="sonarr",
+            label="Sonarr",
+            category="Media services",
+            description="Checks Sonarr system status with the configured API key.",
+            live_safe=True,
+            configured=bool(runtime.sonarr_base_url and runtime.sonarr_api_key),
+            config_detail="Sonarr URL and API key are required.",
+            target=sonarr_target,
+            runner=lambda runtime=runtime: _run_sonarr_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="radarr",
+            label="Radarr",
+            category="Media services",
+            description="Checks Radarr system status with the configured API key.",
+            live_safe=True,
+            configured=bool(runtime.radarr_base_url and runtime.radarr_api_key),
+            config_detail="Radarr URL and API key are required.",
+            target=radarr_target,
+            runner=lambda runtime=runtime: _run_radarr_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="prowlarr",
+            label="Prowlarr",
+            category="Media services",
+            description="Checks Prowlarr health and flags warnings as degraded.",
+            live_safe=True,
+            configured=bool(runtime.prowlarr_base_url and runtime.prowlarr_api_key),
+            config_detail="Prowlarr URL and API key are required.",
+            target=prowlarr_target,
+            runner=lambda runtime=runtime: _run_prowlarr_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="qbittorrent",
+            label="qBittorrent",
+            category="Media services",
+            description="Checks qBittorrent login and app version.",
+            live_safe=True,
+            configured=bool(
+                runtime.qbittorrent_base_url and runtime.qbittorrent_username and runtime.qbittorrent_password
+            ),
+            config_detail="qBittorrent URL, username, and password are required.",
+            target=qbittorrent_target,
+            runner=lambda runtime=runtime: _run_qbittorrent_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="email",
+            label="SMTP email",
+            category="Notifications",
+            description="Sends a live test email using the configured SMTP provider.",
+            live_safe=False,
+            configured=email_ready,
+            config_detail=email_warning or email_detail,
+            target=smtp_target,
+            runner=lambda recipient_email=recipient_email: _run_email_check(recipient_email),
+        ),
+        DiagnosticCheck(
+            key="discord",
+            label="Discord webhook",
+            category="Notifications",
+            description="Posts a live test message to the configured Discord webhook.",
+            live_safe=False,
+            configured=discord_ready,
+            config_detail=discord_detail,
+            target=discord_target,
+            runner=lambda runtime=runtime: _run_discord_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="telegram",
+            label="Telegram",
+            category="Notifications",
+            description="Sends a live test message to the configured Telegram chat.",
+            live_safe=False,
+            configured=telegram_ready,
+            config_detail=telegram_detail,
+            target=telegram_target,
+            runner=lambda runtime=runtime: _run_telegram_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="push",
+            label="Push/mobile provider",
+            category="Notifications",
+            description="Sends a live test message through the configured push provider.",
+            live_safe=False,
+            configured=push_ready,
+            config_detail=push_detail,
+            target=push_target,
+            runner=lambda runtime=runtime: _run_push_check(runtime),
+        ),
+        DiagnosticCheck(
+            key="webhook",
+            label="Generic webhook",
+            category="Notifications",
+            description="Posts a live test payload to the configured generic webhook.",
+            live_safe=False,
+            configured=webhook_ready,
+            config_detail=webhook_detail,
+            target=webhook_target,
+            runner=lambda runtime=runtime: _run_webhook_check(runtime),
+        ),
+    ]
+    return checks
+
+
+async def _execute_check(check: DiagnosticCheck) -> Dict[str, Any]:
+    if not check.configured:
+        return {
+            "key": check.key,
+            "label": check.label,
+            "category": check.category,
+            "description": check.description,
+            "target": check.target,
+            "live_safe": check.live_safe,
+            "configured": False,
+            "status": _config_status(check.config_detail),
+            "message": check.config_detail,
+            "checked_at": _now_iso(),
+            "duration_ms": 0,
+        }
+
+    started = perf_counter()
+    checked_at = _now_iso()
+    try:
+        payload = await check.runner()
+        status = _clean_text(payload.get("status"), "up")
+        message = _clean_text(payload.get("message"), "Check passed")
+        detail = payload.get("detail")
+        return {
+            "key": check.key,
+            "label": check.label,
+            "category": check.category,
+            "description": check.description,
+            "target": check.target,
+            "live_safe": check.live_safe,
+            "configured": True,
+            "status": status,
+            "message": message,
+            "detail": detail,
+            "checked_at": checked_at,
+            "duration_ms": round((perf_counter() - started) * 1000, 1),
+        }
+    except httpx.HTTPError as exc:
+        return {
+            "key": check.key,
+            "label": check.label,
+            "category": check.category,
+            "description": check.description,
+            "target": check.target,
+            "live_safe": check.live_safe,
+            "configured": True,
+            "status": "down",
+            "message": _http_error_detail(exc),
+            "checked_at": checked_at,
+            "duration_ms": round((perf_counter() - started) * 1000, 1),
+        }
+    except Exception as exc:
+        return {
+            "key": check.key,
+            "label": check.label,
+            "category": check.category,
+            "description": check.description,
+            "target": check.target,
+            "live_safe": check.live_safe,
+            "configured": True,
+            "status": "down",
+            "message": str(exc),
+            "checked_at": checked_at,
+            "duration_ms": round((perf_counter() - started) * 1000, 1),
+        }
+
+
+def get_diagnostics_catalog() -> Dict[str, Any]:
+    checks = _build_diagnostic_checks()
+    items = []
+    for check in checks:
+        items.append(
+            {
+                "key": check.key,
+                "label": check.label,
+                "category": check.category,
+                "description": check.description,
+                "live_safe": check.live_safe,
+                "target": check.target,
+                "configured": check.configured,
+                "config_status": "configured" if check.configured else _config_status(check.config_detail),
+                "config_detail": "Ready to test." if check.configured else check.config_detail,
+            }
+        )
+    categories = sorted({item["category"] for item in items})
+    return {
+        "checks": items,
+        "categories": categories,
+        "generated_at": _now_iso(),
+    }
+
+
+async def run_diagnostics(keys: Optional[Sequence[str]] = None, recipient_email: Optional[str] = None) -> Dict[str, Any]:
+    checks = _build_diagnostic_checks(recipient_email=recipient_email)
+    selected = {str(key).strip().lower() for key in (keys or []) if str(key).strip()}
+    if selected:
+        checks = [check for check in checks if check.key.lower() in selected]
+    results = await asyncio.gather(*(_execute_check(check) for check in checks))
+    return {
+        "results": results,
+        "summary": _summary_from_results(results),
+        "checked_at": _now_iso(),
+    }

backend/app/services/jellyfin_sync.py

@@ -0,0 +1,100 @@
+import logging
+
+from fastapi import HTTPException
+
+from ..clients.jellyfin import JellyfinClient
+from ..db import (
+    create_user_if_missing,
+    get_user_by_username,
+    set_user_email,
+    set_user_auth_provider,
+    set_user_jellyseerr_id,
+)
+from ..runtime import get_runtime_settings
+from .user_cache import (
+    build_jellyseerr_candidate_map,
+    extract_jellyseerr_user_email,
+    find_matching_jellyseerr_user,
+    get_cached_jellyseerr_users,
+    match_jellyseerr_user_id,
+    save_jellyfin_users_cache,
+)
+
+logger = logging.getLogger(__name__)
+
+
+async def sync_jellyfin_users() -> int:
+    runtime = get_runtime_settings()
+    client = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
+    if not client.configured():
+        raise HTTPException(status_code=400, detail="Jellyfin not configured")
+    users = await client.get_users()
+    if not isinstance(users, list):
+        return 0
+    save_jellyfin_users_cache(users)
+    # Jellyfin is the canonical source for local user objects; Seerr IDs are
+    # matched as enrichment when possible.
+    jellyseerr_users = get_cached_jellyseerr_users()
+    candidate_map = build_jellyseerr_candidate_map(jellyseerr_users or [])
+    imported = 0
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        name = user.get("Name")
+        if not name:
+            continue
+        matched_id = match_jellyseerr_user_id(name, candidate_map) if candidate_map else None
+        matched_seerr_user = find_matching_jellyseerr_user(name, jellyseerr_users or [])
+        matched_email = extract_jellyseerr_user_email(matched_seerr_user)
+        created = create_user_if_missing(
+            name,
+            "jellyfin-user",
+            role="user",
+            email=matched_email,
+            auth_provider="jellyfin",
+            jellyseerr_user_id=matched_id,
+        )
+        if created:
+            imported += 1
+        else:
+            existing = get_user_by_username(name)
+            if (
+                existing
+                and str(existing.get("role") or "user").strip().lower() != "admin"
+                and str(existing.get("auth_provider") or "local").strip().lower() != "jellyfin"
+            ):
+                set_user_auth_provider(name, "jellyfin")
+            if matched_id is not None:
+                set_user_jellyseerr_id(name, matched_id)
+            if matched_email:
+                set_user_email(name, matched_email)
+    return imported
+
+
+async def run_daily_jellyfin_sync() -> None:
+    while True:
+        delay = _seconds_until_midnight()
+        await _sleep_seconds(delay)
+        try:
+            imported = await sync_jellyfin_users()
+            logger.info("Jellyfin daily sync complete: imported=%s", imported)
+        except HTTPException as exc:
+            logger.warning("Jellyfin daily sync skipped: %s", exc.detail)
+        except Exception:
+            logger.exception("Jellyfin daily sync failed")
+
+
+def _seconds_until_midnight() -> float:
+    from datetime import datetime, timedelta
+
+    now = datetime.now()
+    next_midnight = (now + timedelta(days=1)).replace(
+        hour=0, minute=0, second=0, microsecond=0
+    )
+    return max((next_midnight - now).total_seconds(), 0.0)
+
+
+async def _sleep_seconds(delay: float) -> None:
+    import asyncio
+
+    await asyncio.sleep(delay)

backend/app/services/notifications.py

@@ -0,0 +1,280 @@
+from __future__ import annotations
+
+import logging
+from typing import Any, Dict, Optional
+from urllib.parse import quote
+
+import httpx
+
+from ..config import settings as env_settings
+from ..db import get_setting
+from ..network_security import validate_notification_target_url
+from ..runtime import get_runtime_settings
+from .invite_email import send_generic_email
+
+logger = logging.getLogger(__name__)
+
+
+def _clean_text(value: Any, fallback: str = "") -> str:
+    if value is None:
+        return fallback
+    if isinstance(value, str):
+        trimmed = value.strip()
+        return trimmed if trimmed else fallback
+    return str(value)
+
+
+def _split_emails(value: str) -> list[str]:
+    if not value:
+        return []
+    parts = [entry.strip() for entry in value.replace(";", ",").split(",")]
+    return [entry for entry in parts if entry and "@" in entry]
+
+
+def _resolve_app_url() -> str:
+    runtime = get_runtime_settings()
+    for candidate in (
+        runtime.magent_application_url,
+        runtime.magent_proxy_base_url,
+        env_settings.cors_allow_origin,
+    ):
+        normalized = _clean_text(candidate)
+        if normalized:
+            return normalized.rstrip("/")
+    port = int(getattr(runtime, "magent_application_port", 3000) or 3000)
+    return f"http://localhost:{port}"
+
+
+def _portal_item_url(item_id: int) -> str:
+    return f"{_resolve_app_url()}/portal?item={item_id}"
+
+
+async def _http_post_json(url: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    validate_notification_target_url(url)
+    async with httpx.AsyncClient(timeout=12.0) as client:
+        response = await client.post(url, json=payload)
+        response.raise_for_status()
+        try:
+            body = response.json()
+        except ValueError:
+            body = response.text
+    return {"status_code": response.status_code, "body": body}
+
+
+async def _send_discord(title: str, message: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    webhook = _clean_text(runtime.magent_notify_discord_webhook_url) or _clean_text(
+        runtime.discord_webhook_url
+    )
+    if not webhook:
+        return {"status": "skipped", "detail": "Discord webhook not configured."}
+    data = {
+        "content": f"**{title}**\n{message}",
+        "embeds": [
+            {
+                "title": title,
+                "description": message,
+                "fields": [
+                    {"name": "Type", "value": _clean_text(payload.get("kind"), "unknown"), "inline": True},
+                    {"name": "Status", "value": _clean_text(payload.get("status"), "unknown"), "inline": True},
+                    {"name": "Priority", "value": _clean_text(payload.get("priority"), "normal"), "inline": True},
+                ],
+                "url": _clean_text(payload.get("item_url")),
+            }
+        ],
+    }
+    result = await _http_post_json(webhook, data)
+    return {"status": "ok", "detail": f"Discord accepted ({result['status_code']})."}
+
+
+async def _send_telegram(title: str, message: str) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    bot_token = _clean_text(runtime.magent_notify_telegram_bot_token)
+    chat_id = _clean_text(runtime.magent_notify_telegram_chat_id)
+    if not bot_token or not chat_id:
+        return {"status": "skipped", "detail": "Telegram is not configured."}
+    url = f"https://api.telegram.org/bot{bot_token}/sendMessage"
+    payload = {"chat_id": chat_id, "text": f"{title}\n\n{message}", "disable_web_page_preview": True}
+    result = await _http_post_json(url, payload)
+    return {"status": "ok", "detail": f"Telegram accepted ({result['status_code']})."}
+
+
+async def _send_webhook(payload: Dict[str, Any]) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    webhook = _clean_text(runtime.magent_notify_webhook_url)
+    if not webhook:
+        return {"status": "skipped", "detail": "Generic webhook is not configured."}
+    result = await _http_post_json(webhook, payload)
+    return {"status": "ok", "detail": f"Webhook accepted ({result['status_code']})."}
+
+
+async def _send_push(title: str, message: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    provider = _clean_text(runtime.magent_notify_push_provider, "ntfy").lower()
+    base_url = _clean_text(runtime.magent_notify_push_base_url)
+    token = _clean_text(runtime.magent_notify_push_token)
+    topic = _clean_text(runtime.magent_notify_push_topic)
+    if provider == "ntfy":
+        if not base_url or not topic:
+            return {"status": "skipped", "detail": "ntfy needs base URL and topic."}
+        validate_notification_target_url(base_url)
+        url = f"{base_url.rstrip('/')}/{quote(topic)}"
+        headers = {"Title": title, "Tags": "magent,portal"}
+        async with httpx.AsyncClient(timeout=12.0) as client:
+            response = await client.post(url, content=message.encode("utf-8"), headers=headers)
+            response.raise_for_status()
+        return {"status": "ok", "detail": f"ntfy accepted ({response.status_code})."}
+    if provider == "gotify":
+        if not base_url or not token:
+            return {"status": "skipped", "detail": "Gotify needs base URL and token."}
+        validate_notification_target_url(base_url)
+        url = f"{base_url.rstrip('/')}/message?token={quote(token)}"
+        body = {"title": title, "message": message, "priority": 5, "extras": {"client::display": {"contentType": "text/plain"}}}
+        result = await _http_post_json(url, body)
+        return {"status": "ok", "detail": f"Gotify accepted ({result['status_code']})."}
+    if provider == "pushover":
+        user_key = _clean_text(runtime.magent_notify_push_user_key)
+        if not token or not user_key:
+            return {"status": "skipped", "detail": "Pushover needs token and user key."}
+        form = {"token": token, "user": user_key, "title": title, "message": message}
+        async with httpx.AsyncClient(timeout=12.0) as client:
+            response = await client.post("https://api.pushover.net/1/messages.json", data=form)
+            response.raise_for_status()
+        return {"status": "ok", "detail": f"Pushover accepted ({response.status_code})."}
+    if provider == "discord":
+        return await _send_discord(title, message, payload)
+    if provider == "telegram":
+        return await _send_telegram(title, message)
+    if provider == "webhook":
+        return await _send_webhook(payload)
+    return {"status": "skipped", "detail": f"Unsupported push provider '{provider}'."}
+
+
+async def _send_email(title: str, message: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    recipients = _split_emails(_clean_text(get_setting("portal_notification_recipients")))
+    fallback = _clean_text(runtime.magent_notify_email_from_address)
+    if fallback and fallback not in recipients:
+        recipients.append(fallback)
+    if not recipients:
+        return {"status": "skipped", "detail": "No portal notification recipient is configured."}
+
+    body_text = (
+        f"{title}\n\n"
+        f"{message}\n\n"
+        f"Kind: {_clean_text(payload.get('kind'))}\n"
+        f"Status: {_clean_text(payload.get('status'))}\n"
+        f"Priority: {_clean_text(payload.get('priority'))}\n"
+        f"Requested by: {_clean_text(payload.get('requested_by'))}\n"
+        f"Open: {_clean_text(payload.get('item_url'))}\n"
+    )
+    body_html = (
+        "<div style=\"font-family:Segoe UI,Arial,sans-serif; color:#132033;\">"
+        f"<h2 style=\"margin:0 0 12px;\">{title}</h2>"
+        f"<p style=\"margin:0 0 16px; line-height:1.7;\">{message}</p>"
+        "<table style=\"border-collapse:collapse; width:100%; margin:0 0 16px;\">"
+        f"<tr><td style=\"padding:6px 0; color:#6b778c;\">Kind</td><td style=\"padding:6px 0; font-weight:700;\">{_clean_text(payload.get('kind'))}</td></tr>"
+        f"<tr><td style=\"padding:6px 0; color:#6b778c;\">Status</td><td style=\"padding:6px 0; font-weight:700;\">{_clean_text(payload.get('status'))}</td></tr>"
+        f"<tr><td style=\"padding:6px 0; color:#6b778c;\">Priority</td><td style=\"padding:6px 0; font-weight:700;\">{_clean_text(payload.get('priority'))}</td></tr>"
+        f"<tr><td style=\"padding:6px 0; color:#6b778c;\">Requested by</td><td style=\"padding:6px 0; font-weight:700;\">{_clean_text(payload.get('requested_by'))}</td></tr>"
+        "</table>"
+        f"<a href=\"{_clean_text(payload.get('item_url'))}\" style=\"display:inline-block; padding:10px 16px; border-radius:999px; background:#1c6bff; color:#fff; text-decoration:none; font-weight:700;\">Open portal item</a>"
+        "</div>"
+    )
+    deliveries: list[Dict[str, Any]] = []
+    for recipient in recipients:
+        try:
+            result = await send_generic_email(
+                recipient_email=recipient,
+                subject=title,
+                body_text=body_text,
+                body_html=body_html,
+            )
+            deliveries.append({"recipient": recipient, "status": "ok", **result})
+        except Exception as exc:
+            deliveries.append({"recipient": recipient, "status": "error", "detail": str(exc)})
+    successful = [entry for entry in deliveries if entry.get("status") == "ok"]
+    if successful:
+        return {"status": "ok", "detail": f"Email sent to {len(successful)} recipient(s).", "deliveries": deliveries}
+    return {"status": "error", "detail": "Email delivery failed for all recipients.", "deliveries": deliveries}
+
+
+async def send_portal_notification(
+    *,
+    event_type: str,
+    item: Dict[str, Any],
+    actor_username: str,
+    actor_role: str,
+    note: Optional[str] = None,
+) -> Dict[str, Any]:
+    runtime = get_runtime_settings()
+    if not runtime.magent_notify_enabled:
+        return {"status": "skipped", "detail": "Notifications are disabled.", "channels": {}}
+
+    item_id = int(item.get("id") or 0)
+    title = f"{env_settings.app_name} portal update: {item.get('title') or f'Item #{item_id}'}"
+    message_lines = [
+        f"Event: {event_type}",
+        f"Actor: {actor_username} ({actor_role})",
+        f"Item #{item_id} is now '{_clean_text(item.get('status'), 'unknown')}'.",
+    ]
+    if note:
+        message_lines.append(f"Note: {note}")
+    message_lines.append(f"Open: {_portal_item_url(item_id)}")
+    message = "\n".join(message_lines)
+    payload = {
+        "type": "portal.notification",
+        "event": event_type,
+        "item_id": item_id,
+        "item_url": _portal_item_url(item_id),
+        "kind": _clean_text(item.get("kind")),
+        "status": _clean_text(item.get("status")),
+        "priority": _clean_text(item.get("priority")),
+        "requested_by": _clean_text(item.get("created_by_username")),
+        "actor_username": actor_username,
+        "actor_role": actor_role,
+        "note": note or "",
+    }
+
+    channels: Dict[str, Dict[str, Any]] = {}
+    if runtime.magent_notify_discord_enabled:
+        try:
+            channels["discord"] = await _send_discord(title, message, payload)
+        except Exception as exc:
+            channels["discord"] = {"status": "error", "detail": str(exc)}
+    if runtime.magent_notify_telegram_enabled:
+        try:
+            channels["telegram"] = await _send_telegram(title, message)
+        except Exception as exc:
+            channels["telegram"] = {"status": "error", "detail": str(exc)}
+    if runtime.magent_notify_webhook_enabled:
+        try:
+            channels["webhook"] = await _send_webhook(payload)
+        except Exception as exc:
+            channels["webhook"] = {"status": "error", "detail": str(exc)}
+    if runtime.magent_notify_push_enabled:
+        try:
+            channels["push"] = await _send_push(title, message, payload)
+        except Exception as exc:
+            channels["push"] = {"status": "error", "detail": str(exc)}
+    if runtime.magent_notify_email_enabled:
+        try:
+            channels["email"] = await _send_email(title, message, payload)
+        except Exception as exc:
+            channels["email"] = {"status": "error", "detail": str(exc)}
+
+    successful = [name for name, value in channels.items() if value.get("status") == "ok"]
+    failed = [name for name, value in channels.items() if value.get("status") == "error"]
+    skipped = [name for name, value in channels.items() if value.get("status") == "skipped"]
+    logger.info(
+        "portal notification event=%s item_id=%s successful=%s failed=%s skipped=%s",
+        event_type,
+        item_id,
+        successful,
+        failed,
+        skipped,
+    )
+    overall = "ok" if successful and not failed else "error" if failed and not successful else "partial"
+    if not channels:
+        overall = "skipped"
+    return {"status": overall, "channels": channels}

backend/app/services/password_reset.py

@@ -0,0 +1,333 @@
+from __future__ import annotations
+
+import logging
+import secrets
+from datetime import datetime, timedelta, timezone
+from typing import Any, Dict, Optional
+
+from ..auth import normalize_user_auth_provider, resolve_user_auth_provider
+from ..clients.jellyfin import JellyfinClient
+from ..clients.jellyseerr import JellyseerrClient
+from ..db import (
+    create_password_reset_token,
+    delete_expired_password_reset_tokens,
+    get_password_reset_token,
+    get_user_by_jellyseerr_id,
+    get_user_by_username,
+    get_users_by_username_ci,
+    mark_password_reset_token_used,
+    set_user_auth_provider,
+    set_user_password,
+    sync_jellyfin_password_state,
+)
+from ..runtime import get_runtime_settings
+from .invite_email import send_password_reset_email
+from .user_cache import get_cached_jellyseerr_users, save_jellyseerr_users_cache
+
+logger = logging.getLogger(__name__)
+
+PASSWORD_RESET_TOKEN_TTL_MINUTES = 30
+
+
+class PasswordResetUnavailableError(RuntimeError):
+    pass
+
+
+def _normalize_handles(value: object) -> list[str]:
+    if not isinstance(value, str):
+        return []
+    normalized = value.strip().lower()
+    if not normalized:
+        return []
+    handles = [normalized]
+    if "@" in normalized:
+        handles.append(normalized.split("@", 1)[0])
+    return list(dict.fromkeys(handles))
+
+
+def _pick_preferred_user(users: list[dict], requested_identifier: str) -> dict | None:
+    if not users:
+        return None
+    requested = str(requested_identifier or "").strip().lower()
+
+    def _rank(user: dict) -> tuple[int, int, int, int]:
+        provider = str(user.get("auth_provider") or "local").strip().lower()
+        role = str(user.get("role") or "user").strip().lower()
+        username = str(user.get("username") or "").strip().lower()
+        return (
+            0 if role == "admin" else 1,
+            0 if isinstance(user.get("jellyseerr_user_id"), int) else 1,
+            0 if provider == "jellyfin" else (1 if provider == "local" else 2),
+            0 if username == requested else 1,
+        )
+
+    return sorted(users, key=_rank)[0]
+
+
+def _find_matching_seerr_user(identifier: str, users: list[dict]) -> dict | None:
+    target_handles = set(_normalize_handles(identifier))
+    if not target_handles:
+        return None
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        for key in ("username", "email"):
+            value = user.get(key)
+            if target_handles.intersection(_normalize_handles(value)):
+                return user
+    return None
+
+
+async def _fetch_all_seerr_users() -> list[dict]:
+    cached = get_cached_jellyseerr_users()
+    if cached is not None:
+        return cached
+    runtime = get_runtime_settings()
+    client = JellyseerrClient(runtime.jellyseerr_base_url, runtime.jellyseerr_api_key)
+    if not client.configured():
+        return []
+    users: list[dict] = []
+    take = 100
+    skip = 0
+    while True:
+        payload = await client.get_users(take=take, skip=skip)
+        if not payload:
+            break
+        if isinstance(payload, list):
+            batch = payload
+        elif isinstance(payload, dict):
+            batch = payload.get("results") or payload.get("users") or payload.get("data") or payload.get("items")
+        else:
+            batch = None
+        if not isinstance(batch, list) or not batch:
+            break
+        users.extend([user for user in batch if isinstance(user, dict)])
+        if len(batch) < take:
+            break
+        skip += take
+    if users:
+        return save_jellyseerr_users_cache(users)
+    return users
+
+
+def _resolve_seerr_user_email(seerr_user: Optional[dict], local_user: Optional[dict]) -> Optional[str]:
+    if isinstance(local_user, dict):
+        stored_email = str(local_user.get("email") or "").strip()
+        if "@" in stored_email:
+            return stored_email
+        username = str(local_user.get("username") or "").strip()
+        if "@" in username:
+            return username
+    if isinstance(seerr_user, dict):
+        email = str(seerr_user.get("email") or "").strip()
+        if "@" in email:
+            return email
+    return None
+
+
+async def _resolve_reset_target(identifier: str) -> Optional[Dict[str, Any]]:
+    normalized_identifier = str(identifier or "").strip()
+    if not normalized_identifier:
+        return None
+
+    local_user = normalize_user_auth_provider(
+        _pick_preferred_user(get_users_by_username_ci(normalized_identifier), normalized_identifier)
+    )
+    seerr_users: list[dict] | None = None
+    seerr_user: dict | None = None
+
+    if isinstance(local_user, dict) and isinstance(local_user.get("jellyseerr_user_id"), int):
+        seerr_users = await _fetch_all_seerr_users()
+        seerr_user = next(
+            (
+                user
+                for user in seerr_users
+                if isinstance(user, dict) and int(user.get("id") or user.get("userId") or 0) == int(local_user["jellyseerr_user_id"])
+            ),
+            None,
+        )
+
+    if not local_user:
+        seerr_users = seerr_users if seerr_users is not None else await _fetch_all_seerr_users()
+        seerr_user = _find_matching_seerr_user(normalized_identifier, seerr_users)
+        if seerr_user:
+            seerr_user_id = seerr_user.get("id") or seerr_user.get("userId") or seerr_user.get("Id")
+            try:
+                seerr_user_id = int(seerr_user_id) if seerr_user_id is not None else None
+            except (TypeError, ValueError):
+                seerr_user_id = None
+            if seerr_user_id is not None:
+                local_user = normalize_user_auth_provider(get_user_by_jellyseerr_id(seerr_user_id))
+            if not local_user:
+                for candidate in (seerr_user.get("email"), seerr_user.get("username")):
+                    if not isinstance(candidate, str) or not candidate.strip():
+                        continue
+                    local_user = normalize_user_auth_provider(
+                        _pick_preferred_user(get_users_by_username_ci(candidate), candidate)
+                    )
+                    if local_user:
+                        break
+
+    if not local_user:
+        return None
+
+    auth_provider = resolve_user_auth_provider(local_user)
+    username = str(local_user.get("username") or "").strip()
+    recipient_email = _resolve_seerr_user_email(seerr_user, local_user)
+    if not recipient_email:
+        seerr_users = seerr_users if seerr_users is not None else await _fetch_all_seerr_users()
+        if isinstance(local_user.get("jellyseerr_user_id"), int):
+            seerr_user = next(
+                (
+                    user
+                    for user in seerr_users
+                    if isinstance(user, dict) and int(user.get("id") or user.get("userId") or 0) == int(local_user["jellyseerr_user_id"])
+                ),
+                None,
+            )
+        if not seerr_user:
+            seerr_user = _find_matching_seerr_user(username, seerr_users)
+        recipient_email = _resolve_seerr_user_email(seerr_user, local_user)
+    if not recipient_email:
+        return None
+
+    if auth_provider == "jellyseerr":
+        runtime = get_runtime_settings()
+        jellyfin_client = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
+        if jellyfin_client.configured():
+            try:
+                jellyfin_user = await jellyfin_client.find_user_by_name(username)
+            except Exception:
+                jellyfin_user = None
+            if isinstance(jellyfin_user, dict):
+                auth_provider = "jellyfin"
+
+    if auth_provider not in {"local", "jellyfin"}:
+        return None
+
+    return {
+        "username": username,
+        "recipient_email": recipient_email,
+        "auth_provider": auth_provider,
+    }
+
+
+def _token_record_is_usable(record: Optional[dict]) -> bool:
+    if not isinstance(record, dict):
+        return False
+    if record.get("is_used"):
+        return False
+    if record.get("is_expired"):
+        return False
+    return True
+
+
+def _mask_email(email: str) -> str:
+    candidate = str(email or "").strip()
+    if "@" not in candidate:
+        return "valid reset link"
+    local_part, domain = candidate.split("@", 1)
+    if not local_part:
+        return f"***@{domain}"
+    if len(local_part) == 1:
+        return f"{local_part}***@{domain}"
+    return f"{local_part[0]}***{local_part[-1]}@{domain}"
+
+
+async def request_password_reset(
+    identifier: str,
+    *,
+    requested_by_ip: Optional[str] = None,
+    requested_user_agent: Optional[str] = None,
+) -> Dict[str, Any]:
+    delete_expired_password_reset_tokens()
+    target = await _resolve_reset_target(identifier)
+    if not target:
+        logger.info("password reset requested with no eligible match identifier=%s", identifier.strip().lower()[:256])
+        return {"status": "ok", "issued": False}
+
+    token = secrets.token_urlsafe(32)
+    expires_at = (datetime.now(timezone.utc) + timedelta(minutes=PASSWORD_RESET_TOKEN_TTL_MINUTES)).isoformat()
+    create_password_reset_token(
+        token,
+        target["username"],
+        target["recipient_email"],
+        target["auth_provider"],
+        expires_at,
+        requested_by_ip=requested_by_ip,
+        requested_user_agent=requested_user_agent,
+    )
+    await send_password_reset_email(
+        recipient_email=target["recipient_email"],
+        username=target["username"],
+        token=token,
+        expires_at=expires_at,
+        auth_provider=target["auth_provider"],
+    )
+    return {
+        "status": "ok",
+        "issued": True,
+        "username": target["username"],
+        "recipient_email": target["recipient_email"],
+        "auth_provider": target["auth_provider"],
+        "expires_at": expires_at,
+    }
+
+
+def verify_password_reset_token(token: str) -> Dict[str, Any]:
+    delete_expired_password_reset_tokens()
+    record = get_password_reset_token(token)
+    if not _token_record_is_usable(record):
+        raise ValueError("Password reset link is invalid or has expired.")
+    return {
+        "status": "ok",
+        "recipient_hint": _mask_email(str(record.get("recipient_email") or "")),
+        "auth_provider": record.get("auth_provider"),
+        "expires_at": record.get("expires_at"),
+    }
+
+
+async def apply_password_reset(token: str, new_password: str) -> Dict[str, Any]:
+    delete_expired_password_reset_tokens()
+    record = get_password_reset_token(token)
+    if not _token_record_is_usable(record):
+        raise ValueError("Password reset link is invalid or has expired.")
+
+    username = str(record.get("username") or "").strip()
+    if not username:
+        raise ValueError("Password reset link is invalid or has expired.")
+
+    stored_user = normalize_user_auth_provider(get_user_by_username(username))
+    if not stored_user:
+        raise ValueError("Password reset link is invalid or has expired.")
+
+    auth_provider = resolve_user_auth_provider(stored_user)
+    if auth_provider == "jellyseerr":
+        auth_provider = "jellyfin"
+
+    if auth_provider == "local":
+        set_user_password(username, new_password)
+        if str(stored_user.get("auth_provider") or "").strip().lower() != "local":
+            set_user_auth_provider(username, "local")
+        mark_password_reset_token_used(token)
+        logger.info("password reset applied username=%s provider=local", username)
+        return {"status": "ok", "provider": "local", "username": username}
+
+    if auth_provider == "jellyfin":
+        runtime = get_runtime_settings()
+        client = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
+        if not client.configured():
+            raise PasswordResetUnavailableError("Jellyfin is not configured for password reset.")
+        jellyfin_user = await client.find_user_by_name(username)
+        user_id = client._extract_user_id(jellyfin_user)
+        if not user_id:
+            raise ValueError("Password reset link is invalid or has expired.")
+        await client.set_user_password(user_id, new_password)
+        sync_jellyfin_password_state(username, new_password)
+        if str(stored_user.get("auth_provider") or "").strip().lower() != "jellyfin":
+            set_user_auth_provider(username, "jellyfin")
+        mark_password_reset_token_used(token)
+        logger.info("password reset applied username=%s provider=jellyfin", username)
+        return {"status": "ok", "provider": "jellyfin", "username": username}
+
+    raise ValueError("Password reset is not available for this sign-in provider.")

backend/app/services/user_cache.py

@@ -0,0 +1,185 @@
+import json
+import logging
+from datetime import datetime, timezone, timedelta
+from typing import Any, Dict, List, Optional
+
+from ..db import get_setting, set_setting, delete_setting
+
+logger = logging.getLogger(__name__)
+
+JELLYSEERR_CACHE_KEY = "jellyseerr_users_cache"
+JELLYSEERR_CACHE_AT_KEY = "jellyseerr_users_cached_at"
+JELLYFIN_CACHE_KEY = "jellyfin_users_cache"
+JELLYFIN_CACHE_AT_KEY = "jellyfin_users_cached_at"
+
+
+def _now_iso() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+def _parse_iso(value: Optional[str]) -> Optional[datetime]:
+    if not value:
+        return None
+    try:
+        parsed = datetime.fromisoformat(value)
+    except ValueError:
+        return None
+    if parsed.tzinfo is None:
+        parsed = parsed.replace(tzinfo=timezone.utc)
+    return parsed
+
+
+def _cache_is_fresh(cached_at: Optional[str], max_age_minutes: int) -> bool:
+    parsed = _parse_iso(cached_at)
+    if not parsed:
+        return False
+    age = datetime.now(timezone.utc) - parsed
+    return age <= timedelta(minutes=max_age_minutes)
+
+
+def _load_cached_users(
+    cache_key: str, cache_at_key: str, max_age_minutes: int
+) -> Optional[List[Dict[str, Any]]]:
+    cached_at = get_setting(cache_at_key)
+    if not _cache_is_fresh(cached_at, max_age_minutes):
+        return None
+    raw = get_setting(cache_key)
+    if not raw:
+        return None
+    try:
+        data = json.loads(raw)
+    except (TypeError, json.JSONDecodeError):
+        return None
+    if isinstance(data, list):
+        return [item for item in data if isinstance(item, dict)]
+    return None
+
+
+def _save_cached_users(cache_key: str, cache_at_key: str, users: List[Dict[str, Any]]) -> None:
+    payload = json.dumps(users, ensure_ascii=True)
+    set_setting(cache_key, payload)
+    set_setting(cache_at_key, _now_iso())
+
+
+def _normalized_handles(value: Any) -> List[str]:
+    if not isinstance(value, str):
+        return []
+    normalized = value.strip().lower()
+    if not normalized:
+        return []
+    handles = [normalized]
+    if "@" in normalized:
+        handles.append(normalized.split("@", 1)[0])
+    return list(dict.fromkeys(handles))
+
+
+def build_jellyseerr_candidate_map(users: List[Dict[str, Any]]) -> Dict[str, int]:
+    candidate_to_id: Dict[str, int] = {}
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        user_id = user.get("id") or user.get("userId") or user.get("Id")
+        try:
+            user_id = int(user_id)
+        except (TypeError, ValueError):
+            continue
+        for key in ("username", "email", "displayName", "name"):
+            for handle in _normalized_handles(user.get(key)):
+                candidate_to_id.setdefault(handle, user_id)
+    return candidate_to_id
+
+
+def find_matching_jellyseerr_user(
+    identifier: str, users: List[Dict[str, Any]]
+) -> Optional[Dict[str, Any]]:
+    target_handles = set(_normalized_handles(identifier))
+    if not target_handles:
+        return None
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        for key in ("username", "email", "displayName", "name"):
+            if target_handles.intersection(_normalized_handles(user.get(key))):
+                return user
+    return None
+
+
+def extract_jellyseerr_user_email(user: Optional[Dict[str, Any]]) -> Optional[str]:
+    if not isinstance(user, dict):
+        return None
+    value = user.get("email")
+    if not isinstance(value, str):
+        return None
+    candidate = value.strip()
+    if not candidate or "@" not in candidate:
+        return None
+    return candidate
+
+
+def match_jellyseerr_user_id(
+    username: str, candidate_map: Dict[str, int]
+) -> Optional[int]:
+    for handle in _normalized_handles(username):
+        matched = candidate_map.get(handle)
+        if matched is not None:
+            return matched
+    return None
+
+
+def save_jellyseerr_users_cache(users: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
+    normalized: List[Dict[str, Any]] = []
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        normalized.append(
+            {
+                "id": user.get("id") or user.get("userId") or user.get("Id"),
+                "email": user.get("email"),
+                "username": user.get("username"),
+                "displayName": user.get("displayName"),
+                "name": user.get("name"),
+            }
+        )
+    _save_cached_users(JELLYSEERR_CACHE_KEY, JELLYSEERR_CACHE_AT_KEY, normalized)
+    logger.debug("Cached Seerr users: %s", len(normalized))
+    return normalized
+
+
+def get_cached_jellyseerr_users(max_age_minutes: int = 1440) -> Optional[List[Dict[str, Any]]]:
+    return _load_cached_users(JELLYSEERR_CACHE_KEY, JELLYSEERR_CACHE_AT_KEY, max_age_minutes)
+
+
+def save_jellyfin_users_cache(users: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
+    normalized: List[Dict[str, Any]] = []
+    for user in users:
+        if not isinstance(user, dict):
+            continue
+        normalized.append(
+            {
+                "id": user.get("Id"),
+                "name": user.get("Name"),
+                "hasPassword": user.get("HasPassword"),
+                "lastLoginDate": user.get("LastLoginDate"),
+            }
+        )
+    _save_cached_users(JELLYFIN_CACHE_KEY, JELLYFIN_CACHE_AT_KEY, normalized)
+    logger.debug("Cached Jellyfin users: %s", len(normalized))
+    return normalized
+
+
+def get_cached_jellyfin_users(max_age_minutes: int = 1440) -> Optional[List[Dict[str, Any]]]:
+    return _load_cached_users(JELLYFIN_CACHE_KEY, JELLYFIN_CACHE_AT_KEY, max_age_minutes)
+
+
+def clear_user_import_caches() -> Dict[str, int]:
+    cleared = 0
+    for key in (
+        JELLYSEERR_CACHE_KEY,
+        JELLYSEERR_CACHE_AT_KEY,
+        JELLYFIN_CACHE_KEY,
+        JELLYFIN_CACHE_AT_KEY,
+    ):
+        delete_setting(key)
+        cleared += 1
+    logger.debug("Cleared user import cache keys: %s", cleared)
+    return {"settingsKeysCleared": cleared}