// Copyright 2013 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.

package main

import (
	"os"
	path "path/filepath"
	"runtime"
	"strings"
)

var cmdRun = &Command{
	UsageLine: "run [appname]",
	Short:     "run the app which can hot compile",
	Long: `
start the appname throw exec.Command

then start a inotify watch for current dir
										
when the file has changed bee will auto go build and restart the app

	file changed
	     |
  check if it's go file
	     |
     yes     no
      |       |
 go build    do nothing
     |
 restart app   
`,
}

func init() {
	cmdRun.Run = runApp
}

var appname string

func runApp(cmd *Command, args []string) {
	exit := make(chan bool)
	crupath, _ := os.Getwd()
	if len(args) != 1 {
		appname = path.Base(crupath)
		ColorLog("[INFO] Uses '%s' as 'appname'\n", appname)
	} else {
		appname = args[0]
	}
	Debugf("current path:%s\n", crupath)

	err := loadConfig()
	if err != nil {
		ColorLog("[ERRO] Fail to parse bee.json[ %s ]\n", err)
	}

	var paths []string
	paths = append(paths,
		path.Join(crupath, conf.DirStruct.Controllers),
		path.Join(crupath, conf.DirStruct.Models),
		path.Join(crupath, "./")) // Current path.
	// Because monitor files has some issues, we watch current directory
	// and ignore non-go files.
	gps := GetGOPATHs()
	if len(gps) == 0 {
		ColorLog("[ERRO] Fail to start[ %s ]\n", "$GOPATH is not set or empty")
		os.Exit(2)
	}
	gopath := gps[0]
	for _, p := range conf.DirStruct.Others {
		paths = append(paths, strings.Replace(p, "$GOPATH", gopath, -1))
	}

	NewWatcher(paths)
	Autobuild()
	for {
		select {
		case <-exit:
			runtime.Goexit()
		}
	}
}