package srvdata

import (
	"os"
	"path/filepath"

	"github.com/howeyc/fsnotify"

	"mongo.games.com/game/model"
	"mongo.games.com/goserver/core"
	"mongo.games.com/goserver/core/basic"
	"mongo.games.com/goserver/core/logger"
)

// DatFileModifiedCommand dat文件加载
type DatFileModifiedCommand struct {
	fileName string
}

func (fmc *DatFileModifiedCommand) Done(o *basic.Object) error {
	fn := filepath.Base(fmc.fileName)
	logger.Logger.Info("modified file name ======", fn)

	// loader
	for k, v := range DataMgr.GetLoader(fn) {
		err := v.Reload(fmc.fileName)
		if err != nil {
			logger.Logger.Warnf("%v loader %v err: %v", fn, k, err)
		}
	}
	return nil
}

// JsonFileModifiedCommand json文件加载
type JsonFileModifiedCommand struct {
	fileName string
}

func (gmc *JsonFileModifiedCommand) Done(o *basic.Object) error {
	fn := filepath.Base(gmc.fileName)
	switch fn {
	case "gameparam.json":
		model.InitGameParam()
	case "gmac.json":
		model.InitGMAC()
	case "thrconfig.json":
		model.InitGameConfig()
	case "fishingparam.json":
		model.InitFishingParam()
	//case "bullfightparam.json":
	//	model.InitBullFightParam()
	//case "winthreeparam.json":
	//	model.InitWinThreeParam()
	//case "mahjongparam.json":
	//	model.InitMahJongParam()
	case "normalparam.json":
		model.InitNormalParam()
	case "clientparam.json":
		model.InitClientParam()
	}
	return nil
}

var Config = Configuration{}

type Configuration struct {
	RootPath string //文件目录
	watcher  *fsnotify.Watcher
}

func (this *Configuration) Name() string {
	return "data"
}

func (this *Configuration) Init() error {
	workDir, workingDirError := os.Getwd()
	if workingDirError != nil {
		return workingDirError
	}

	this.RootPath = filepath.Join(workDir, this.RootPath)
	var err error
	this.watcher, err = fsnotify.NewWatcher()
	if err != nil {
		logger.Logger.Error("fsnotify.NewWatcher err:", err)
		return err
	}

	// 监听文件变化
	// Process events
	go func() {
		defer func() {
			logger.Logger.Warnf("watcher quit! %v", this.RootPath)
			if err := recover(); err != nil {
				logger.Logger.Error("watch data director modify goroutine err:", err)
			}
		}()
		logger.Logger.Infof("watcher start! %v", this.RootPath)
		for {
			select {
			case ev, ok := <-this.watcher.Event:
				logger.Logger.Info("fsnotify event:", ev)
				if !ok || ev == nil {
					continue
				}
				if ev.IsModify() || ev.IsRename() {
					obj := core.CoreObject()
					if obj == nil {
						continue
					}

					switch filepath.Ext(ev.Name) {
					case ".dat":
						obj.SendCommand(&DatFileModifiedCommand{fileName: ev.Name}, false)
					case ".json":
						obj.SendCommand(&JsonFileModifiedCommand{fileName: ev.Name}, false)
					}
				}

			case err := <-this.watcher.Error:
				logger.Logger.Error("fsnotify err:", err)
			}
		}
	}()

	// 收集 DataLoader 处理的文件
	var loaderFiles []string // 文件地址，.dat文件
	this.watcher.Watch(this.RootPath)
	filepath.Walk(this.RootPath, func(path string, info os.FileInfo, err error) error {
		if info.IsDir() {
			this.watcher.Watch(path) // 监听文件夹下的文件修改
		}
		name := info.Name()
		if filepath.Ext(name) != ".dat" {
			return nil
		}
		loaderFiles = append(loaderFiles, name)
		return nil
	})

	// 使用 DataLoader 加载
	for _, fileName := range loaderFiles {
		for k, v := range DataMgr.GetLoader(fileName) {
			fullPath := filepath.Join(this.RootPath, fileName)
			err := v.Load(fullPath)
			if err != nil {
				logger.Logger.Warnf("%v loader %v err: %v", fileName, k, err)
			} else {
				logger.Logger.Infof("%v loader %v success", fileName, k)
			}
		}
	}
	return nil
}

func (this *Configuration) Close() error {
	if this.watcher != nil {
		this.watcher.Close()
	}
	return nil
}

func init() {
	core.RegistePackage(&Config)
}