{
  pkgs,
  lib,
  self,
}:

pkgs.testers.runNixOSTest {
  name = "arr-init-partial-config";

  nodes.machine =
    { pkgs, lib, ... }:
    let
      mocks = import ./lib/mocks.nix { inherit pkgs; };
    in
    {
      imports = [ self.nixosModules.default ];

      system.stateVersion = "24.11";

      virtualisation.memorySize = 4096;

      environment.systemPackages = with pkgs; [
        curl
        jq
        gnugrep
      ];

      systemd.services.mock-qbittorrent = mocks.mkMockQbittorrent { };

      systemd.tmpfiles.rules = [
        "d /media/tv 0755 sonarr sonarr -"
      ];

      services.sonarr = {
        enable = true;
        dataDir = "/var/lib/sonarr/.config/NzbDrone";
        settings.server.port = lib.mkDefault 8989;
      };

      services.radarr = {
        enable = true;
        dataDir = "/var/lib/radarr/.config/Radarr";
        settings.server.port = lib.mkDefault 7878;
      };

      services.prowlarr = {
        enable = true;
      };

      # Test 1: Only rootFolders (no downloadClients)
      services.arrInit.sonarr = {
        enable = true;
        serviceName = "sonarr";
        dataDir = "/var/lib/sonarr/.config/NzbDrone";
        port = 8989;
        rootFolders = [ "/media/tv" ];
        # downloadClients = []; (default empty)
        # syncedApps = []; (default empty)
      };

      # Test 2: Only downloadClients (no rootFolders)
      services.arrInit.radarr = {
        enable = true;
        serviceName = "radarr";
        dataDir = "/var/lib/radarr/.config/Radarr";
        port = 7878;
        downloadClients = [
          {
            name = "qBittorrent";
            implementation = "QBittorrent";
            configContract = "QBittorrentSettings";
            protocol = "torrent";
            fields = {
              host = "127.0.0.1";
              port = 6011;
              useSsl = false;
              movieCategory = "movies";
            };
          }
        ];
        # rootFolders = []; (default empty)
        # syncedApps = []; (default empty)
      };

      # Test 3: Only syncedApps (Prowlarr)
      services.arrInit.prowlarr = {
        enable = true;
        serviceName = "prowlarr";
        dataDir = "/var/lib/prowlarr";
        port = 9696;
        apiVersion = "v1";
        syncedApps = [
          {
            name = "Sonarr";
            implementation = "Sonarr";
            configContract = "SonarrSettings";
            prowlarrUrl = "http://localhost:9696";
            baseUrl = "http://localhost:8989";
            apiKeyFrom = "/var/lib/sonarr/.config/NzbDrone/config.xml";
            syncCategories = [ 5000 ];
            serviceName = "sonarr";
          }
        ];
        # downloadClients = []; (default empty)
        # rootFolders = []; (default empty)
      };
    };

  testScript = ''
    start_all()

    # Wait for mock and services
    machine.wait_for_unit("mock-qbittorrent.service")
    machine.wait_until_succeeds("curl -sf http://localhost:6011/api/v2/app/version", timeout=30)
    machine.wait_for_unit("sonarr.service")
    machine.wait_for_unit("radarr.service")
    machine.wait_for_unit("prowlarr.service")

    # Wait for APIs to be ready
    machine.wait_until_succeeds(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/sonarr/.config/NzbDrone/config.xml) && "
        "curl -sf http://localhost:8989/api/v3/system/status -H \"X-Api-Key: $API_KEY\"",
        timeout=120,
    )
    machine.wait_until_succeeds(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/radarr/.config/Radarr/config.xml) && "
        "curl -sf http://localhost:7878/api/v3/system/status -H \"X-Api-Key: $API_KEY\"",
        timeout=120,
    )
    machine.wait_until_succeeds(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/prowlarr/config.xml) && "
        "curl -sf http://localhost:9696/api/v1/system/status -H \"X-Api-Key: $API_KEY\"",
        timeout=180,
    )

    # Trigger init services
    machine.succeed("systemctl restart sonarr-init.service")
    machine.succeed("systemctl restart radarr-init.service")
    machine.succeed("systemctl restart prowlarr-init.service")

    machine.wait_for_unit("sonarr-init.service")
    machine.wait_for_unit("radarr-init.service")
    machine.wait_for_unit("prowlarr-init.service")

    # Test 1: Sonarr - only rootFolders should exist, no download clients
    result = machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/sonarr/.config/NzbDrone/config.xml) && "
        "curl -sf http://localhost:8989/api/v3/rootfolder -H \"X-Api-Key: $API_KEY\" | "
        "jq '. | length'"
    ).strip()
    assert result == "1", f"Expected 1 Sonarr root folder, got {result}"

    result = machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/sonarr/.config/NzbDrone/config.xml) && "
        "curl -sf http://localhost:8989/api/v3/downloadclient -H \"X-Api-Key: $API_KEY\" | "
        "jq '. | length'"
    ).strip()
    assert result == "0", f"Expected 0 Sonarr download clients, got {result}"

    # Test 2: Radarr - only downloadClients should exist, no root folders
    result = machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/radarr/.config/Radarr/config.xml) && "
        "curl -sf http://localhost:7878/api/v3/downloadclient -H \"X-Api-Key: $API_KEY\" | "
        "jq '. | length'"
    ).strip()
    assert result == "1", f"Expected 1 Radarr download client, got {result}"

    result = machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/radarr/.config/Radarr/config.xml) && "
        "curl -sf http://localhost:7878/api/v3/rootfolder -H \"X-Api-Key: $API_KEY\" | "
        "jq '. | length'"
    ).strip()
    assert result == "0", f"Expected 0 Radarr root folders, got {result}"

    # Test 3: Prowlarr - only syncedApps should exist
    result = machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/prowlarr/config.xml) && "
        "curl -sf http://localhost:9696/api/v1/applications -H \"X-Api-Key: $API_KEY\" | "
        "jq '. | length'"
    ).strip()
    assert result == "1", f"Expected 1 Prowlarr synced app, got {result}"

    # Verify Sonarr is the synced app
    machine.succeed(
        "API_KEY=$(grep -oP '(?<=<ApiKey>)[^<]+' /var/lib/prowlarr/config.xml) && "
        "curl -sf http://localhost:9696/api/v1/applications -H \"X-Api-Key: $API_KEY\" | "
        "jq -e '.[] | select(.name == \"Sonarr\")'"
    )
  '';
}