X-Git-Url: https://git.giacomolli.uk/onechat/blobdiff_plain/153f3f9b4b09d521412eacca30eddeed395c3f41..3bf0f670487e571a0525844a6c00de495b8a465a:/main.go

diff --git a/main.go b/main.go
index f2c263d..a73407f 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,4 @@
+// Command onechat runs the agent daemon and its terminal client.
 package main
 
 import (
@@ -9,6 +10,25 @@ import (
 	"syscall"
 )
 
+// usage is the help text of the command.
+const usage = `Usage: onechat [COMMAND]
+
+Commands:
+  chat                     talk to the agent in this terminal (default)
+  daemon                   run the agent, Telegram, and WhatsApp
+  import [-n] ZIP...        import WhatsApp history (stop the daemon first)
+    -n                     print the plan without model calls
+  login                    log in to ChatGPT with a device code
+  probe LOG COUNT [BUILDS] measure the compactor on a log, with real calls
+  version                  show the build version
+  help                     show this help
+
+Chat needs a running daemon. ONECHAT_DIR sets the data directory.
+`
+
+// version is set by the package build and stays dev for direct Go builds.
+var version = "dev"
+
 func main() {
 	err := run()
 	if err != nil {
@@ -23,29 +43,37 @@ func run() error {
 
 	args := os.Args[1:]
 	switch {
-	case len(args) == 0:
-		_, err := fmt.Println("onechat")
+	case len(args) == 1 && (args[0] == "help" || args[0] == "--help" || args[0] == "-h"):
+		_, err := fmt.Print(usage)
 		if err != nil {
-			return err
+			return fmt.Errorf("write command help: %w", err)
+		}
+	case len(args) == 1 && args[0] == "version":
+		_, err := fmt.Println(version)
+		if err != nil {
+			return fmt.Errorf("write build version: %w", err)
 		}
 	case len(args) == 1 && args[0] == "login":
 		err := chatgptLogin(ctx, os.Stdout)
 		if err != nil {
 			return err
 		}
+
 	// A signal is the normal stop of the daemon and the client, so their
 	// result does not include ctx.Err().
 	case len(args) == 1 && args[0] == "daemon":
 		return daemon(ctx, os.Stdout)
-	case len(args) == 1 && args[0] == "chat":
+	case len(args) == 0 || len(args) == 1 && args[0] == "chat":
 		return terminal(ctx, os.Stdin, os.Stdout)
+	case len(args) > 0 && args[0] == "import":
+		return whatsappImport(ctx, args[1:], os.Stdout)
 	case len(args) > 0 && args[0] == "probe":
 		err := probe(ctx, args[1:], os.Stdout)
 		if err != nil {
 			return err
 		}
 	default:
-		return fmt.Errorf("unknown command %q", strings.Join(args, " "))
+		return fmt.Errorf("unknown command %q\n\n%s", strings.Join(args, " "), strings.TrimSuffix(usage, "\n"))
 	}
 
 	return ctx.Err()