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

let
  svc_name = "rallly";
  svc_domain = "${svc_name}.${config.mine.shared.settings.domain}";

  psqlSocket = "/run/postgresql";

  user = "rallly";
  port = 7384;

  ralllyPkgsOrig = pkgs.callPackage ./../../../../shared/pkgs/rallly {};
  ralllyPkgs = ralllyPkgsOrig.overrideAttrs (old: {
    patches = (if old ? patches then old.patches else []) ++ [
      ./patches/remove-login-register.patch
    ];
  });
in {
  # setup rallly service
  systemd.services.rallly = {
    description = "rallly";
    wantedBy = [ "multi-user.target" ];
    after = [ "networking.target" ];

    # configuration
    environment = let
      rallly-prisma-engines = ralllyPkgs.passthru.rallly-prisma-engines;
    in rec {
      HOSTNAME = "localhost";
      PORT = builtins.toString port;
      DATABASE_URL = "postgresql://${user}@localhost/${user}?host=${psqlSocket}";
      NEXT_PUBLIC_BASE_URL = "https://${svc_domain}";
      NEXTAUTH_URL = NEXT_PUBLIC_BASE_URL;
      # SECRET_PASSWORD = "specified-in-env";

      # limit signup even further
      ALLOWED_EMAILS = "*@${config.mine.shared.settings.domain}";

      # email
      SUPPORT_EMAIL = "${svc_name}@${config.mine.shared.settings.domain}";
      SMTP_HOST = config.mine.shared.settings.mail.domain_smtp;
      SMTP_PORT = builtins.toString config.mine.shared.settings.mail.ports.submissions;
      SMTP_SECURE = "true";
      SMTP_USER = svc_name;
      # SMTP_PWD = "specified-in-env";


      # OIDC
      OIDC_NAME = "Authelia";
      OIDC_DISCOVERY_URL = "https://${config.mine.shared.settings.authelia.domain}/.well-known/openid-configuration";
      OIDC_CLIENT_ID = "rallly";
      # OIDC_CLIENT_SECRET = "specified-in-env";

      # prisma things (database will not work without, needs to match version in rallly deps as well)
      PRISMA_SCHEMA_ENGINE_BINARY = "${rallly-prisma-engines}/bin/schema-engine";
      PRISMA_QUERY_ENGINE_BINARY = "${rallly-prisma-engines}/bin/query-engine";
      PRISMA_QUERY_ENGINE_LIBRARY = "${rallly-prisma-engines}/lib/libquery_engine.node";
      PRISMA_INTROSPECTION_ENGINE_BINARY = "${rallly-prisma-engines}/bin/introspection-engine";
      PRISMA_FMT_BINARY = "${rallly-prisma-engines}/bin/prisma-fmt";
    };

    # add, otherwise we get warnings
    path = [ pkgs.openssl ];

    serviceConfig = {
      ExecStartPre = [
        # clear cache on each boot, otherwise we might have 
        # issues when updating it.
        "${pkgs.findutils}/bin/find -L /var/cache/${svc_name} -mindepth 1 -delete"

        # run db migration each boot
        "${ralllyPkgs}/bin/rallly-prisma migrate deploy"
      ];
      ExecStart = "${ralllyPkgs}/bin/rallly";

      # secret configurations
      EnvironmentFile = [ config.age.secrets.rallly-env.path ];

      CacheDirectory = svc_name;
      CacheDirectoryMode = "0750";

      User = user;
      DynamicUser = true;
      Restart = "always";
    };
  };

  # setup postgresql
  services.postgresql = {
    ensureDatabases = [ user ];
    ensureUsers = [{
      name = user;
      ensureDBOwnership = true;
    }];
  };

  # setup ldap user for email
  services.lldap.provision.users = config.mine.shared.lib.ldap.mkScope (lconfig: llib: {
    "${svc_name}" = llib.mkProvisionUserSystem "${svc_name}" config.age.secrets.rallly-ldap-pass.path;
  });

  # authelia
  services.authelia.instances.main.settings.identity_providers.oidc.clients = [{
    client_id = "rallly";
    client_name = "Rallly";
    client_secret = "$pbkdf2-sha512$310000$KB4UqeuVr86lEOoISSE92w$i2YGpz3wRwceiRfYnMUhZ0MboutkDPPYVWnXqiw6tUt./mgZ5kfV1ES.kcdsHhMdavhCrJfWvVTPQRJKImuUrQ";
    redirect_uris = [ "https://${svc_domain}/api/auth/callback/oidc" ];
    scopes = [
      "openid"
      "email"
      "profile"
    ];
  }];

  # nginx
  services.nginx.virtualHosts."${svc_domain}" = config.mine.shared.lib.authelia.mkProtectedWebsite {
    forceSSL = true;
    enableACME = true;
    
    locations."/" = {
      proxyPass = "http://localhost:${builtins.toString port}";
    };

    # try to disable registration
    locations."/api/trpc/auth.requestRegistration" = {
      root = pkgs.writeTextDir "index.html" ''
        NO REGISTRATION!!
      '';
    };
  };

  # meta information!
  mine.shared.meta.rallly = {
    name = "Rallly";
    description = ''Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier. Please do not try to use the register or normal login, only try to sign in using the SSO method. '';
    url = "https://${svc_domain}";

    package = let
      pkg = ralllyPkgs;
    in {
      name = pkg.pname;
      version = pkg.version;
      meta = pkg.meta;
    };
  };
}