Add basic documentationHEADmain

2 files changed, 23 insertions, 1 deletions

diff --git a/README.md b/README.md
index 80af138..c37ab80 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,12 @@
 # corvid
 
-A DBus Notification server that outputs JSON. Intended for use with [eww](https://github.com/elkowar/eww). I may eventually actually document this, but it's fairly simple.
\ No newline at end of file
+a dbus notification server that outputs json. intended for use with [eww](https://github.com/elkowar/eww).
+
+## subcommands
+- `server`: run the server
+- `dismiss <id>`: dismiss specific notification
+- `dismiss-all`: dismiss all notifications
+
+## environment variables
+- `CORVID_DEFAULT_EXPIRATION`: default notification expiration in ms. `-1` = never (default: `5000`)
+- `CORVID_SORT_DIRECTION`: notification sort direction, either `NEWEST_FIRST` or `OLDEST_FIRST` (default: `NEWEST_FIRST`)
diff --git a/cmd/corvid/main.go b/cmd/corvid/main.go
index 7fffbd1..b434010 100644
--- a/cmd/corvid/main.go
+++ b/cmd/corvid/main.go
@@ -32,8 +32,21 @@ func main() {
 		call("Dismiss", uint32(id))
 	case "dismiss-all":
 		call("DismissAll")
+	case "help":
+		fmt.Printf("subcommands:\n")
+		fmt.Printf("  server (default) - run the server\n")
+		fmt.Printf("  dismiss <id>     - dismiss specific notification\n")
+		fmt.Printf("  dismiss-all      - dismiss all notifications\n")
+		fmt.Printf("\n")
+		fmt.Printf("environment vars:\n")
+		fmt.Printf("  CORVID_DEFAULT_EXPIRATION - default notification expiration in\n")
+		fmt.Printf("                              ms. -1 = never (default: 5000)\n")
+		fmt.Printf("  CORVID_SORT_DIRECTION     - notification sort direction, either\n")
+		fmt.Printf("                              NEWEST_FIRST or OLDEST_FIRST\n")
+		fmt.Printf("                              (default: NEWEST_FIRST)\n")
 	default:
 		fmt.Printf("unknown subcommand: %s\n", os.Args[1])
+		fmt.Printf("run corvid help for command list\n")
 		os.Exit(1)
 	}
 }