main.go

/*
Fresh is a command-line tool that builds, starts and restarts your written in Go application, including a web app, every time you save a Go or template file or any desired files you specify via configuration file.
Fresh can be used even without configuration file, using default values.

Fresh watches for file events, and every time a file is created, deleted or modified it will build and restart the application.

If `go build` returns an error, it will create a log file in the tmp folder and keep watching, attempting to rebuild if initial compilation was successful.
It will also attempt to kill previously created processes.

This is a fork of an original fresh (https://github.com/pilu/fresh) that is announced as unmaintained.

*/
package main

import (
	"flag"
	"fmt"
	"github.com/zzwx/fresh/runner"
	"os"
)

const VERSION = "1.3.4"

func main() {
	var version *bool
	var help bool
	flag.BoolVar(&help, "h", false, "print help page")
	version = flag.Bool("version", false, "print current version and exit")
	flag.BoolVar(version, "v", *version, "alias for -version")

	configPath := flag.String("c", runner.DefaultConfigPath, fmt.Sprintf("config file path"))
	generate := flag.Bool("generate", false, fmt.Sprintf("generate a sample settings file either at %q or at specified by -c location", runner.DefaultConfigPath))
	flag.BoolVar(generate, "g", *generate, "alias for -generate")
	env := flag.String("e", "", fmt.Sprintf("environment variables prefix. %q is a default prefix", runner.EnvPrefix))
	flag.Parse()
	if help {
		flag.Usage()
		return
	}
	if *version || (len(os.Args) > 1 && os.Args[1] == "version") {
		fmt.Println(VERSION)
		return
	}

	if *env != "" {
		runner.EnvPrefix = *env
		fmt.Printf("Environment variables prefix set to %q\n", runner.EnvPrefix)
	}

	if *configPath != "" {
		if _, err := os.Stat(*configPath); err != nil {
			if *generate {
				runner.SaveRunnerConfigSettings(*configPath)
			} else {
				fmt.Printf("Can't find config file %q. Generate using -g\n", *configPath)
				os.Exit(1)
			}
		} else {
			os.Setenv(runner.EnvPrefix+"CONFIG_PATH", *configPath) // RUNNER_CONFIG_PATH
		}
		if !*generate {
			runner.Start()
		}
	} else {
		fmt.Printf("Empty config path provided\n")
		os.Exit(1)
	}
}