package cli

import "os"

// Main is the entry point for the CLI frontend.
// It returns the exit code of the compiler.
// We never call os.Exit directly here because it's bad for testing.
func Main(args []string) int {
	if len(args) == 0 {
		return Help(os.Stderr, 2)
	}

	switch args[0] {
	case "build":
		return Build(args[1:])

	case "run":
		return Run(args[1:])

	case "system":
		return System(args[1:])

	case "help":
		return Help(os.Stdout, 0)

	default:
		return Help(os.Stderr, 2)
	}
}