package govue

//go-bindata-assetfs --pkg=govue govue-runtime/...

import (
	"fmt"
	"git.ouxuan.net/3136352472/go-service-template/jsruntime"
	"git.ouxuan.net/3136352472/go-service-template/pool"
	"github.com/elazarl/go-bindata-assetfs"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"path/filepath"
	"time"
)

type GoVue struct {
	StaticPath    string
	UseJsPath     string
	Resources     *assetfs.AssetFS
	jsRuntimePool *pool.JsRuntimePool
}

func NewGoVueDefaultConfig() (gv *GoVue, err error) {

	gv = &GoVue{
		Resources: assetFS(),
	}
	err = gv.initRender()
	return
}

func NewGoVue(useJsPath string, staticPath string) (gv *GoVue, err error) {
	gv = &GoVue{
		StaticPath: staticPath,
		UseJsPath:  useJsPath,
		Resources:  assetFS(),
	}
	err = gv.initRender()
	return
}

func SetPoolConfig(config pool.Config) {
	pool.DefaultConfig = config
}

func (gv *GoVue) initRender() (err error) {
	if gv.StaticPath == "" {
		gv.StaticPath = filepath.Join(getSelfFilePath(), "static")
	}

	if gv.UseJsPath == "" {
		gv.UseJsPath = filepath.Join(gv.StaticPath, "use.js")
	}

	//mainScript, err := ioutil.ReadFile(filepath.Join("govue", "govue-runtime", "runtime.js"))
	//if err != nil {
	//	return
	//}
	//headerScript, err := ioutil.ReadFile(filepath.Join("govue", "govue-runtime", "header.js"))
	//if err != nil {
	//	return
	//}
	//govueScript, err := ioutil.ReadFile(filepath.Join("govue-js-src", "dist", "index.js"))
	//if err != nil {
	//	return
	//}

	mainScript, err := gv.Resources.Asset(filepath.Join("govue-runtime", "runtime.js"))
	if err != nil {
		return
	}

	headerScript, err := gv.Resources.Asset(filepath.Join("govue-runtime", "header.js"))
	if err != nil {
		return
	}

	govueScript, err := gv.Resources.Asset(filepath.Join("govue-runtime", "govue.js"))
	if err != nil {
		return
	}

	gv.jsRuntimePool = pool.NewJsRuntimePool(string(mainScript), gv.UseJsPath, gv.StaticPath, jsruntime.Relys{
		jsruntime.Rely{
			Src: string(headerScript),
		},
		jsruntime.Rely{
			Src: string(govueScript),
		},
	}, jsruntime.ModeSync)
	return
}

func (gv *GoVue) PoolLog() {
	gv.jsRuntimePool.Log()
}

func (gv *GoVue) StartPoolLog() {
	go func() {
		defer func() {
			recover()
			log.Println("统计协程异常")
		}()
		lastidle := 0
		lastactive := 0
		for {
			all, idle, active := gv.jsRuntimePool.NumInfo()
			if idle != lastidle || active != lastactive {
				fmt.Println("渲染协程数量变动变动:所有:", all, "空闲:", idle, "活动:", active)
			}
			lastidle = idle
			lastactive = active
			time.Sleep(time.Second)
		}
	}()
}

func (gv *GoVue) LoadStaticResources(request *http.Request) (result []byte, err error) {
	var path string
	var staticDir string
	var filePath = request.URL.Path
	if gv.StaticPath == "" {
		staticDir = filepath.Join(getSelfFilePath(), "static")
	} else {
		staticDir = gv.StaticPath
	}

	path = filepath.Join(staticDir, filePath)

	fi, err := os.Stat(path)
	if err != nil {
		return
	} else if fi.IsDir() {
		filePath = filepath.Join(filePath, "index.html")
		path = filepath.Join(staticDir, filePath)
	}

	result, err = ioutil.ReadFile(path)
	if !pathExists(path) || err != nil {
		return
	}
	if filepath.Ext(path) != ".html" {
		return
	}

	err = gv.jsRuntimePool.JsRuntimeCall(func(jr *jsruntime.JsRuntime) {
		err = jr.Render(filePath, fmt.Sprintf("http://%s%s", request.Host, request.RequestURI), string(result), func(data string) {
			result = []byte(data)
		})
	})
	return
}