nix-config/modules/nixos/services/nextcloud/default.nix

{
  lib,
  config,
  pkgs,
  namespace,
  ...
}:
let
  name = "nextcloud";
  cfg = config.${namespace}.services.${name};
  net = lib.${namespace}.network;

  nextcloudConfig = lib.${namespace}.mkModule {
    inherit config name;
    serviceName = "nextcloud";
    description = "Nextcloud - Secure file sync and sharing platform";
    options = { };

    moduleConfig = {
      # Setup the native NixOS Nextcloud service
      services = {
        nextcloud = {
          enable = true;
          package = pkgs.nextcloud33;
          hostName = "cloud.mjallen.dev";
          home = "${cfg.dataDir}/nextcloud";
          datadir = "${cfg.dataDir}/nextcloud";
          configureRedis = true;
          enableImagemagick = true;
          appstoreEnable = true;

          # extraApps = with pkgs.${namespace}; {
          #   richdocumentscode = nextcloud-code-server;
          #   # richdocuments = nextcloud-richdocuments;
          # };

          # Use PostgreSQL for database
          config = {
            dbtype = "pgsql";
            dbname = "nextcloud";
            dbuser = "nextcloud";
            dbhost = "/run/postgresql"; # Socket directory
            # dbpassFile = config.sops.secrets."jallen-nas/nextcloud/dbpassword".path;
            adminuser = "mjallen";
            adminpassFile = config.sops.secrets."matt_password".path;
          };

          # PHP settings
          phpOptions = lib.mkOverride 90 {
            memory_limit = "512M";
            upload_max_filesize = "10G";
            post_max_size = "10G";
            output_buffering = "0";
            "opcache.interned_strings_buffer" = "16";
            "opcache.max_accelerated_files" = "10000";
            "opcache.memory_consumption" = "128";
            "opcache.save_comments" = "1";
            "opcache.revalidate_freq" = "1";
          };

          # Configure caching for better performance
          caching = {
            apcu = true;
            redis = true;
            memcached = false;
          };

          # Auto-update apps
          autoUpdateApps = {
            enable = false;
            startAt = "05:00:00";
          };

          # Configure HTTPS if enabled
          https = false;

          settings = {
            installed = true;
            auth.bruteforce.protection.enabled = false;
            user_oidc = {
              auto_provision = false;
            };
            overwrite.cli.url = "https://cloud.mjallen.dev";
            overwriteprotocol = "https";
            overwritehost = "cloud.mjallen.dev";
            log_type = "file";
            default_phone_region = "US";
            trusted_proxies = [
              net.hosts.nas.lan
              "127.0.0.1"
              "::1"
            ];
            trusted_domains = [
              "cloud.mjallen.dev"
              "${net.hosts.nas.lan}:${toString cfg.port}"
            ];
            enabledPreviewProviders = [
              "OC\\Preview\\PNG"
              "OC\\Preview\\JPEG"
              "OC\\Preview\\GIF"
              "OC\\Preview\\BMP"
              "OC\\Preview\\XBitmap"
              "OC\\Preview\\Krita"
              "OC\\Preview\\WebP"
              "OC\\Preview\\MarkDown"
              "OC\\Preview\\TXT"
              "OC\\Preview\\OpenDocument"
            ];
          };
        };

        nginx = {
          enable = true;
          group = "jallen-nas";
          virtualHosts.${config.services.nextcloud.hostName} = {
            listen = [
              {
                inherit (cfg) port;
                addr = "0.0.0.0";
                ssl = false;
              }
            ];
          };
        };
      };

      users = {
        users = {
          nextcloud = {
            isSystemUser = lib.mkForce true;
            isNormalUser = lib.mkForce false;
          };
        };
        groups = {
          nextcloud = { };
        };
      };

      # Ensure nextcloud services start after PostgreSQL is ready.
      # The upstream NixOS module only adds this ordering when services.postgresql.enable
      # is true in the same config, but here PostgreSQL is managed separately.
      systemd = {
        services = {
          # Override the empty systemd service created by mkModule.
          # The native NixOS nextcloud module doesn't create a persistent "nextcloud.service"
          # (it uses PHP-FPM pools and cron instead), so we clear this to avoid the error:
          # "Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing."
          nextcloud = lib.mkForce { };
          nextcloud-setup = {
            after = [ "postgresql.service" ];
            requires = [ "postgresql.service" ];
            serviceConfig =
              let
                # Extract the override.config.php store-path from the already-evaluated
                # tmpfiles rules list at Nix eval time, so we never have to parse files at
                # runtime. The upstream module emits exactly one rule of the form:
                #   "L+ <dest> - - - - <storepath>"
                overrideLine = lib.findFirst (
                  r: lib.hasInfix "override.config.php" r
                ) null config.systemd.tmpfiles.rules;
                overrideStorePath =
                  if overrideLine != null then lib.last (lib.splitString " " overrideLine) else null;
              in
              lib.mkIf (overrideStorePath != null) {
                # systemd-tmpfiles refuses to create the override.config.php symlink because
                # /media/nas/main is owned by nix-apps (not root/nextcloud), triggering an
                # "unsafe path transition" error.  Work around this by creating the symlink
                # directly as root (the '+' prefix) before the setup script's ownership check.
                # The target store path is resolved at Nix eval time so it is always current.
                ExecStartPre = [
                  (
                    "+"
                    + pkgs.writeShellScript "nextcloud-fix-override-config" ''
                      dest="${cfg.dataDir}/nextcloud/config/override.config.php"
                      echo "Creating symlink: $dest -> ${overrideStorePath}"
                      ${pkgs.coreutils}/bin/ln -sf "${overrideStorePath}" "$dest"
                    ''
                  )
                ];
              };
          };
          nextcloud-update-db = {
            after = [ "postgresql.service" ];
            requires = [ "postgresql.service" ];
          };
        };
      };
    };
  };
in
{
  imports = [ nextcloudConfig ];
}