{ config, lib, pkgs, ... }:
with lib;
let
  cfg = config.services.pjournal;
in
{
  options = {
    services.pjournal = {
      package = mkOption {
        type = types.package;
        default = pkgs.callPackage ../pkgs/pjournal/default.nix {};
      };
    };
  };

  config = {
    environment.systemPackages = [
      cfg.package
    ];

    services.postgresql = {
      enable = true;
      ensureDatabases = ["pjournal" "pjournal_test"];
      ensureUsers = [
        {
          name = "pjournal";
          ensurePermissions = {
            "DATABASE pjournal" = "ALL PRIVILEGES";
          };
        }
        {
          name = "pjournal_test";
          ensurePermissions = {
            "DATABASE pjournal_test" = "ALL PRIVILEGES";
          };
        }
      ];
    };

    systemd.services.pjournal-test = {
      description = "pjournal test instance";
      after = [ "multi-user.target" "postgresql.service" ];
      wantedBy = ["multi-user.target"];
      environment = {
        RUST_BACKTRACE = "1";
      };
      serviceConfig = {
        ExecStart = ''
          # This will fail the first time. Run pjournal init to initialize
          # the database.
          ${cfg.package}/bin/pjournal \
          --database_url postgres://pjournal_test@/pjournal_test \
          --port 8080
        '';
        User = "pjournal_test";
      };
    };

  };
}