From 905c4e73b244b3afa563078edef8631ce6f588a1 Mon Sep 17 00:00:00 2001
From: Leyla Becker <git@jan-leila.com>
Date: Mon, 30 Dec 2024 20:05:52 -0600
Subject: [PATCH] added syncthing

---
 README.md                                     |  5 +-
 .../nixos/horizon/configuration.nix           | 10 +++
 modules/nixos-modules/default.nix             |  1 +
 modules/nixos-modules/sync.nix                | 87 +++++++++++++++++++
 modules/nixos-modules/users.nix               | 18 ++++
 5 files changed, 119 insertions(+), 2 deletions(-)
 create mode 100644 modules/nixos-modules/sync.nix

diff --git a/README.md b/README.md
index 2097d8c..2f7b5df 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@
 |  `emergent` |      Desktop Computer      |       Eve        |  Desktop  |
 | `threshold` |           Laptop           |       Eve        |  Laptop   |
 |  `wolfram`  |         Steam Deck         |      House       |  Handheld |
+|   `ceder`   | A5 Tablet (not using nix)  |      Leyla       |   Tablet  |
+|   `skate`   | A4 Tablet (not using nix)  |      Leyla       |   Tablet  |
 
 # Tooling
 ## Rebuilding
@@ -57,5 +59,4 @@
 - tail scale clients
 - wake on LAN
 - ISO target that contains authorized keys for nixos-anywhere https://github.com/diegofariasm/yggdrasil/blob/4acc43ebc7bcbf2e41376d14268e382007e94d78/hosts/bootstrap/default.nix
-- Immich
-- Syncthing declarative set up for devices https://nixos.wiki/wiki/Syncthing
\ No newline at end of file
+- Immich
\ No newline at end of file
diff --git a/configurations/nixos/horizon/configuration.nix b/configurations/nixos/horizon/configuration.nix
index 787df3d..bc96142 100644
--- a/configurations/nixos/horizon/configuration.nix
+++ b/configurations/nixos/horizon/configuration.nix
@@ -19,6 +19,16 @@
       ester.isDesktopUser = true;
       eve.isDesktopUser = true;
     };
+    sync = {
+      enable = true;
+      folders = {
+        leyla = {
+          documents.enable = true;
+          calendar.enable = true;
+          notes.enable = true;
+        };
+      };
+    };
   };
 
   environment.systemPackages = [
diff --git a/modules/nixos-modules/default.nix b/modules/nixos-modules/default.nix
index 41e0619..63b2757 100644
--- a/modules/nixos-modules/default.nix
+++ b/modules/nixos-modules/default.nix
@@ -8,6 +8,7 @@
     ./desktop.nix
     ./ssh.nix
     ./i18n.nix
+    ./sync.nix
     ./impermanence.nix
     ./disko.nix
     ./server
diff --git a/modules/nixos-modules/sync.nix b/modules/nixos-modules/sync.nix
new file mode 100644
index 0000000..532038e
--- /dev/null
+++ b/modules/nixos-modules/sync.nix
@@ -0,0 +1,87 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  mountDir = "/mnt/sync";
+in {
+  options.host.sync = {
+    enable = lib.mkEnableOption "should sync thing be enabled on this device";
+    folders = {
+      leyla = {
+        documents = {
+          enable = lib.mkEnableOption "should the documents folder be synced";
+        };
+        calendar = {
+          enable = lib.mkEnableOption "should the calendar folder be synced";
+        };
+        notes = {
+          enable = lib.mkEnableOption "should the notes folder by synced";
+        };
+      };
+      extraFolders = lib.mkOption {
+        type = lib.types.attrsOf (lib.types.submodule ({...}: {
+          options = {
+            path = lib.mkOption {
+              type = lib.types.str;
+            };
+            devices = lib.mkOption {
+              type = lib.types.listof lib.types.str;
+            };
+          };
+        }));
+        default = {};
+      };
+    };
+  };
+
+  config = {
+    systemd = lib.mkIf config.services.syncthing.enable {
+      tmpfiles.rules = [
+        "d ${mountDir} 755 syncthing syncthing -"
+        "d ${config.services.syncthing.dataDir} 755 syncthing syncthing -"
+        "d ${config.services.syncthing.configDir} 755 syncthing syncthing -"
+      ];
+    };
+    services.syncthing = {
+      enable = config.host.sync.enable;
+      user = "syncthing";
+      group = "syncthing";
+      dataDir = "${mountDir}/default";
+      configDir = "/etc/syncthing";
+      overrideDevices = true;
+      overrideFolders = true;
+      settings = {
+        devices = {
+          ceder = {
+            id = "MGXUJBS-7AENXHB-7YQRNWG-QILKEJD-5462U2E-WAQW4R4-I2TVK5H-SMK6LAA";
+          };
+        };
+        folders = lib.mkMerge [
+          config.host.sync.folders.extraFolders
+          (lib.mkIf config.host.sync.folders.leyla.documents.enable {
+            "documents" = {
+              id = "hvrj0-9bm1p";
+              path = "/mnt/sync/leyla/documents";
+              devices = ["ceder"];
+            };
+          })
+          (lib.mkIf config.host.sync.folders.leyla.calendar.enable {
+            "calendar" = {
+              id = "8oatl-1rv6w";
+              path = "/mnt/sync/leyla/calendar";
+              devices = ["ceder"];
+            };
+          })
+          (lib.mkIf config.host.sync.folders.leyla.notes.enable {
+            "notes" = {
+              id = "dwbuv-zffnf";
+              path = "/mnt/sync/leyla/notes";
+              devices = ["ceder"];
+            };
+          })
+        ];
+      };
+    };
+  };
+}
diff --git a/modules/nixos-modules/users.nix b/modules/nixos-modules/users.nix
index e2a8074..af7dcb2 100644
--- a/modules/nixos-modules/users.nix
+++ b/modules/nixos-modules/users.nix
@@ -22,6 +22,7 @@
     hass = 2004;
     headscale = 2005;
     nextcloud = 2006;
+    syncthing = 2007;
   };
 
   gids = {
@@ -36,6 +37,7 @@
     hass = 2004;
     headscale = 2005;
     nextcloud = 2006;
+    syncthing = 2007;
   };
 
   users = config.users.users;
@@ -160,6 +162,12 @@ in {
             isSystemUser = true;
             group = config.users.users.nextcloud.name;
           };
+
+          syncthing = {
+            uid = lib.mkForce uids.syncthing;
+            isSystemUser = true;
+            group = config.users.users.syncthing.name;
+          };
         };
 
         groups = {
@@ -250,6 +258,16 @@ in {
               # leyla
             ];
           };
+
+          syncthing = {
+            gid = lib.mkForce gids.syncthing;
+            members = [
+              users.syncthing.name
+              leyla
+              ester
+              eve
+            ];
+          };
         };
       };
     }