docs: installation, configuration and usage in readme.md

README.md

@@ -1,2 +1,60 @@
-# Nixpkgs-tracker-notifier
+# nixpkgs-notifier
 A notifiy wrapper on top of https://nixpk.gs/pr-tracker.html
+
+It can send you classic notifications or send a message to a matrix room when a tracker PR is merged into nixos-unstable.
+
+### Install
+Add this inputs in your flake.nix
+```nix
+nixpkgs-notifier = {
+  url = "github:tomasriveral/nixpkgs-notifier";
+};
+```
+You can follow the inputs, by adding:
+```nix
+nixpkgs-notifier = {
+  url = "github:tomasriveral/nixpkgs-notifier";
+  inputs.flake-utils.follows = "flake-utils";
+  inputs.nixpkgs.follows = "nixpkgs";
+};
+```
+
+You can later reference the package with `inputs.nixpkgs-notifier.packages.${pkgs.system}.default`
+
+If you want to recieve the notification via matrix, run `matrix-commander-rs --login`
+
+### Configuration
+Configuration file is in ~/.config/nixpkgs-notifier/config.json
+It's created by the program if it doesn't exist.
+The default values are below.
+```json
+{
+  "configTime": 3600,
+  "configFetchTime": 1,
+  "localNotify": true,
+  "matrix": {
+    "enable": false,
+    "room": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+    "ping": false,
+    "userPing": "@someone",
+    "userPingServer": "matrix.org"
+  }
+}
+```
+`configTime` (seconds) is the time between each check of all the PR.
+`configFetchTime` (seconds) is the time between each check of individual PRs. This is done to space out request to [the tracker](nixpk.gs).
+`localNotify` (boolean) Enable local notifications.
+`matrix.enable` (boolean) Enable matrix notifications.
+`matrix.room` (string) Matrix room to send the notifications.
+`matrix.ping` (boolean) Pings a user in the notification messages.
+`matrix.userPing` and `matrix.userPingServer` (strings) are the required information for the ping.
+
+### Usage
+
+* Adding a PR : `nixpkgs-notifier add PR1 PR2 PR3 ...`
+Example: `nixpkgs-notifier add 522460 522461`
+* Removing a PR : `nixpkgs-notifier remove PR1 PR2 ...` or `nixpkgs-notifier rm`
+Note : a PR will be automatically removed after the notification is sent.
+* List tracked PR : `nixpkgs-notifier list`
+* Launch listener : `nixpkgs-notifier listen`
+(This is what periodically checks the PRs and handles the notifications)