rename flake-update-service.nix to autopull.nix

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

modules/autopull.nix

@@ -0,0 +1,115 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.services.autopull;
+
+  # autopull-type = lib.types.submodule { #
+  autopull-type =
+    with lib.types;
+    attrsOf (
+      submodule (
+        { name, ... }:
+        {
+          options = {
+            enable = lib.mkEnableOption "autopull repo";
+
+            repo-name = lib.mkOption {
+              type = lib.types.str;
+              default = name;
+
+              description = "A name for the service which needs to be pulled";
+            };
+
+            path = lib.mkOption {
+              type = lib.types.path;
+              description = "Path that needs to be updated via git pull";
+            };
+
+            frequency = lib.mkOption {
+              type = lib.types.str;
+              description = "systemd-timer compatible time between pulls";
+              default = "1h";
+            };
+
+            ssh-key = lib.mkOption {
+              type = lib.types.str;
+              default = "";
+              description = "ssh-key used to pull the repository";
+            };
+
+            triggers-rebuild = lib.mkOption {
+              type = lib.types.bool;
+              default = false;
+              description = "Whether or not the rebuild service should be triggered after pulling. Note that system.autoUpgrade must be pointed at the same directory as this service if you'd like to use this option.";
+            };
+          };
+        }
+      )
+    );
+in
+{
+  options = {
+    services.autopull = {
+      enable = lib.mkEnableOption "autopull";
+
+      repo = lib.mkOption { type = autopull-type; };
+    };
+  };
+
+  config =
+    let
+      repos = lib.filterAttrs (_: { enable, ... }: enable == true) cfg.repo;
+    in
+    lib.mkIf cfg.enable {
+      environment.systemPackages =
+        [ pkgs.git ]
+        ++ lib.optionals (lib.any (ssh-key: ssh-key != "") (lib.rad-dev.mapGetAttr "ssh-key" repos)) [
+          pkgs.openssh
+        ];
+
+      systemd.services = lib.mapAttrs' (
+        repo:
+        {
+          repo-name,
+          ssh-key,
+          path,
+          triggers-rebuild,
+          ...
+        }:
+        lib.nameValuePair "autopull@${repo-name}" {
+          requires = [ "multi-user.target" ];
+          wants = lib.optionals (triggers-rebuild) [ "nixos-service.service" ];
+          after = [ "multi-user.target" ];
+          before = lib.optionals (triggers-rebuild) [ "nixos-upgrade.service" ];
+          description = "Pull the latest data for ${repo-name}";
+          environment = lib.mkIf (ssh-key != "") {
+            GIT_SSH_COMMAND = "${pkgs.openssh}/bin/ssh -i ${ssh-key} -o IdentitiesOnly=yes";
+          };
+          serviceConfig = {
+            Type = "oneshot";
+            User = "root";
+            WorkingDirectory = path;
+            ExecStart = "${pkgs.git}/bin/git pull --all";
+          };
+        }
+      ) repos;
+
+      systemd.timers = lib.mapAttrs' (
+        repo:
+        { repo-name, frequency, ... }:
+        lib.nameValuePair "autopull@${repo-name}" {
+          wantedBy = [ "timers.target" ];
+          timerConfig = {
+            OnBootSec = frequency;
+            OnUnitActiveSec = frequency;
+            Unit = "autopull@${repo-name}.service";
+          };
+        }
+      ) repos;
+    };
+}