{ config, lib, pkgs, homeyConfig, ... }:

# Jellyfin — media server.
#
# Auth model: Jellyfin-native (no Authelia SSO — Jellyfin intercepts the
# forward_auth flow in ways that break SSO). LDAP plugin can be installed
# manually via the UI; the XML config is pre-seeded on first start so the
# plugin settings are pre-populated when the user opens the config page.
#
# Manual step after first deploy:
#   1. Dashboard → Plugins → Catalog → search "LDAP Authentication" → Install
#   2. Restart Jellyfin (Dashboard → Administration → Restart)
#   3. Dashboard → Plugins → LDAP Authentication → verify fields → Save
#
# Volume layout:
#   <dataDir>/jellyfin/config/  → /config
#   <dataDir>/media/movies/     → /data/movies
#   <dataDir>/media/tvshows/    → /data/tvshows
#   <dataDir>/media/general/    → /data/general
#   <dataDir>/media/complete/   → /data/complete

let
  cfg     = config.homey.jellyfin;
  dataDir = config.homey.storage.mountPoint;
  domain  = homeyConfig.domain;

  ldapBaseDn = lib.concatStringsSep ","
    (map (p: "dc=${p}") (lib.splitString "." domain));

  ldapConfigDir = "${dataDir}/jellyfin/config/plugins/configurations";
  ldapConfigXml = "${ldapConfigDir}/LDAP-Auth.xml";
in
{
  options.homey.jellyfin = {
    enable = lib.mkEnableOption "Jellyfin media server";

    image = lib.mkOption {
      type    = lib.types.str;
      default = "docker.io/jellyfin/jellyfin:latest";
    };

    port = lib.mkOption {
      type    = lib.types.port;
      default = 8096;
    };
  };

  config = lib.mkIf cfg.enable {
    # -----------------------------------------------------------------------
    # Secrets
    # -----------------------------------------------------------------------
    sops.secrets."openldap/ro_password" = { owner = "root"; };

    # -----------------------------------------------------------------------
    # Container
    # -----------------------------------------------------------------------
    virtualisation.oci-containers.containers.jellyfin = {
      image = cfg.image;
      ports = [ "127.0.0.1:${toString cfg.port}:8096" ];

      environment = {
        JELLYFIN_PublishedServerUrl = "https://media.${domain}";
        PUID = "1000";
        PGID = "1000";
      };

      volumes = [
        "${dataDir}/jellyfin/config:/config"
        "${dataDir}/media/movies:/data/movies:ro"
        "${dataDir}/media/tvshows:/data/tvshows:ro"
        "${dataDir}/media/general:/data/general:ro"
        "${dataDir}/media/complete:/data/complete:ro"
      ];

      extraOptions = [ "--network=homey" ];
    };

    # -----------------------------------------------------------------------
    # ExecStartPre: pre-seed LDAP plugin config on first start only
    # -----------------------------------------------------------------------
    systemd.services."podman-jellyfin" = {
      serviceConfig.ExecStartPre = [
        (pkgs.writeShellScript "jellyfin-seed-ldap-config" ''
          set -euo pipefail
          # Only write on first start; preserve any UI edits on subsequent starts.
          if [ -f "${ldapConfigXml}" ]; then
            exit 0
          fi
          mkdir -p "${ldapConfigDir}"
          RO_PASSWORD=$(cat ${config.sops.secrets."openldap/ro_password".path})
          cat > "${ldapConfigXml}" <<EOF
<?xml version="1.0" encoding="utf-8"?>
<PluginConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <LdapServer>openldap</LdapServer>
  <LdapPort>389</LdapPort>
  <UseSsl>false</UseSsl>
  <UseStartTls>false</UseStartTls>
  <SkipSslVerify>false</SkipSslVerify>
  <LdapBindUser>cn=readonly,${ldapBaseDn}</LdapBindUser>
  <LdapBindPassword>$RO_PASSWORD</LdapBindPassword>
  <LdapBaseDn>ou=users,${ldapBaseDn}</LdapBaseDn>
  <LdapSearchFilter></LdapSearchFilter>
  <LdapSearchAttributes>uid,cn,mail,displayName</LdapSearchAttributes>
  <LdapUsernameAttribute>uid</LdapUsernameAttribute>
  <LdapPasswordAttribute>userPassword</LdapPasswordAttribute>
  <EnableAllFolders>true</EnableAllFolders>
  <EnabledFolders />
  <AdminBaseDn>cn=admins,ou=groups,${ldapBaseDn}</AdminBaseDn>
  <AdminFilter></AdminFilter>
  <AllowPassChange>false</AllowPassChange>
  <CreateUsersFromLdap>true</CreateUsersFromLdap>
  <EnableCaseSensitiveUsername>false</EnableCaseSensitiveUsername>
  <LdapClientCertPath></LdapClientCertPath>
  <LdapClientKeyPath></LdapClientKeyPath>
  <LdapRootCaPath></LdapRootCaPath>
  <PasswordResetUrl></PasswordResetUrl>
</PluginConfiguration>
EOF
          chmod 600 "${ldapConfigXml}"
        '')
      ];
      after    = lib.mkAfter [ "mnt-data.mount" "podman-homey-network.service" ];
      requires = lib.mkAfter [ "mnt-data.mount" "podman-homey-network.service" ];
    };

    # -----------------------------------------------------------------------
    # Authelia access control — bypass; Jellyfin has its own login UI and
    # does not work correctly behind SSO forward_auth.
    # -----------------------------------------------------------------------
    homey.authelia.accessControlRules = [{
      priority = 60;
      domain   = [ "media.${domain}" ];
      policy   = "bypass";
    }];

    # -----------------------------------------------------------------------
    # Caddy virtual host — no forward_auth; Jellyfin manages its own auth
    # -----------------------------------------------------------------------
    homey.caddy.virtualHosts = [{
      subdomain = "media";
      port      = cfg.port;
      auth      = false;
    }];

    # -----------------------------------------------------------------------
    # Storage directories
    # -----------------------------------------------------------------------
    homey.storage.extraDirs = [
      { path = "jellyfin"; }
      { path = "jellyfin/config"; }
    ];

    # -----------------------------------------------------------------------
    # Backup
    # -----------------------------------------------------------------------
    homey.backup.extraPaths = [ "${dataDir}/jellyfin" ];

    # -----------------------------------------------------------------------
    # Uptime Kuma monitor
    # -----------------------------------------------------------------------
    homey.monitoring.monitors = [{
      name     = "Jellyfin";
      url      = "https://media.${domain}";
      interval = 60;
    }];
  };
}