feat: added config block to zfs.nix and gave it notification functionality

modules/nixos-modules/storage/zfs.nix

@@ -1,9 +1,13 @@
-args @ {lib, ...}: let
+args @ {
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
   datasetSubmodule = (import ./submodules/dataset.nix) args;
 in {
   options.storage = {
     zfs = {
-      # TODO: enable option implementation
       enable = lib.mkEnableOption "Should zfs be enabled on this system.";
 
       notifications = {
@@ -30,10 +34,6 @@ in {
         };
       };
 
-      # TODO: we need options to configure zfs pools
-      #   we should have warnings when the configured pool is missing drives after activation
-      # TODO: implementation of this
-      # TODO: validations that we have at least one boot drive
       pool = let
         deviceType =
           lib.types.coercedTo lib.types.str (device: {
@@ -56,7 +56,7 @@ in {
         };
       };
 
-      # TODO:create the root dataset automatically
+      # TODO: create the root dataset automatically
       # TODO: dataset option that is a submodule that adds datasets to the system
       #   warnings for when a dataset was created in the past on a system but it is now missing some of the options defined for it
       datasets = lib.mkOption {
@@ -64,4 +64,60 @@ in {
       };
     };
   };
+
+  config = lib.mkIf config.storage.zfs.enable (lib.mkMerge [
+    {
+      services.zfs = {
+        autoScrub.enable = true;
+        autoSnapshot.enable = true;
+      };
+
+      # TODO: post activation script that makes sure that our configured pool match the pool that exist on the system
+      # TODO: validation that we have a boot drive
+      # TODO: disko config mapping
+    }
+    (lib.mkIf config.storage.zfs.notifications.enable {
+      programs.msmtp = {
+        enable = true;
+        setSendmail = true;
+        defaults = {
+          aliases = "/etc/aliases";
+          port = config.storage.zfs.notifications.port;
+          tls_trust_file = "/etc/ssl/certs/ca-certificates.crt";
+          tls = "on";
+          auth = "login";
+          tls_starttls = "off";
+        };
+        accounts = {
+          zfs_notifications = {
+            auth = true;
+            tls = true;
+            host = config.storage.zfs.notifications.host;
+            passwordeval = "cat ${config.storage.zfs.notifications.tokenFile}";
+            user = config.storage.zfs.notifications.user;
+            from = config.storage.zfs.notifications.user;
+          };
+        };
+      };
+
+      services.zfs = {
+        zed = {
+          enableMail = true;
+
+          settings = {
+            ZED_DEBUG_LOG = "/tmp/zed.debug.log";
+            ZED_EMAIL_ADDR = [config.storage.zfs.notifications.to];
+            ZED_EMAIL_PROG = "${pkgs.msmtp}/bin/msmtp";
+            ZED_EMAIL_OPTS = "-a zfs_notifications @ADDRESS@";
+
+            ZED_NOTIFY_INTERVAL_SECS = 3600;
+            ZED_NOTIFY_VERBOSE = true;
+
+            ZED_USE_ENCLOSURE_LEDS = true;
+            ZED_SCRUB_AFTER_RESILVER = true;
+          };
+        };
+      };
+    })
+  ]);
 }