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{ pkgs, ... }:

let
  certs = import ../common/acme/server/snakeoil-certs.nix;

  serverDomain = certs.domain;

  admin = {
    username = "admin";
    password = "snakeoilpass";
  };
  # An API token that we manually insert into the db as a valid one.
  apiToken = "OVJh65sXaAfQMZ4NTcIGbFZIyBZbEZqWTi7azdDf";
in
{
  name = "weblate";
  meta.maintainers = with pkgs.lib.maintainers; [ erictapen ];

  nodes.server =
    { pkgs, lib, ... }:
    {
      virtualisation.memorySize = 2048;

      services.weblate = {
        enable = true;
        localDomain = "${serverDomain}";
        djangoSecretKeyFile = pkgs.writeText "weblate-django-secret" "thisissnakeoilsecretwithmorethan50characterscorrecthorsebatterystaple";
        extraConfig = ''
          # Weblate tries to fetch Avatars from the network
          ENABLE_AVATARS = False
        '';
      };

      services.nginx.virtualHosts."${serverDomain}" = {
        enableACME = lib.mkForce false;
        sslCertificate = certs."${serverDomain}".cert;
        sslCertificateKey = certs."${serverDomain}".key;
      };

      security.pki.certificateFiles = [ certs.ca.cert ];

      networking.hosts."::1" = [ "${serverDomain}" ];
      networking.firewall.allowedTCPPorts = [
        80
        443
      ];

      users.users.weblate.shell = pkgs.bashInteractive;
    };

  nodes.client =
    { pkgs, nodes, ... }:
    {
      environment.systemPackages = [ pkgs.wlc ];

      environment.etc."xdg/weblate".text = ''
        [weblate]
        url = https://${serverDomain}/api/
        [keys]
        https://${serverDomain}/api/ = ${apiToken}
      '';

      networking.hosts."${nodes.server.networking.primaryIPAddress}" = [ "${serverDomain}" ];

      security.pki.certificateFiles = [ certs.ca.cert ];
    };

  testScript = ''
    import json

    start_all()
    server.wait_for_unit("weblate.socket")
    server.wait_until_succeeds("curl -f https://${serverDomain}/")
    server.succeed("sudo -iu weblate -- weblate createadmin --username ${admin.username} --password ${admin.password} --email weblate@example.org")

    # It's easier to replace the generated API token with a predefined one than
    # to extract it at runtime.
    server.succeed("sudo -iu weblate -- psql -d weblate -c \"UPDATE authtoken_token SET key = '${apiToken}' WHERE user_id = (SELECT id FROM weblate_auth_user WHERE username = 'admin');\"")

    client.wait_for_unit("multi-user.target")

    # Test the official Weblate client wlc.
    client.wait_until_succeeds("REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt wlc --debug list-projects")

    def call_wl_api(arg):
        (rv, result) = client.execute("curl -H \"Content-Type: application/json\" -H \"Authorization: Token ${apiToken}\" https://${serverDomain}/api/{}".format(arg))
        assert rv == 0
        print(result)

    call_wl_api("users/ --data '{}'".format(
      json.dumps(
        {"username": "test1",
          "full_name": "test1",
          "email": "test1@example.org"
        })))

    # TODO: Check sending and receiving email.
    # server.wait_for_unit("postfix.service")

    server.succeed("sudo -iu weblate -- weblate check")
    # TODO: The goal is for this to succeed, but there are still some checks failing.
    # server.succeed("sudo -iu weblate -- weblate check --deploy")
  '';
}