package global

import (
	"context"
	"fmt"
	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
	"net/http"
	"path/filepath"
	"ycmediakit/internal/app/ffmpeg"
	"ycmediakit/internal/pkg/config"
	"ycmediakit/internal/pkg/logger"
	"ycmediakit/internal/pkg/util"
	"ycmediakit/middleware"
)

var (
	RunConfig *config.RunConfig
	AppConfig *config.AppConfig
	Logger    *zap.Logger
	Ctx       context.Context
	engine    *gin.Engine
)

func init() {
	initConfig()
	initLogger()
	initEngine()
}

func initConfig() {
	rCfg := config.NewRunConfig()
	aCfg := config.NewAppConfig(rCfg)
	RunConfig = rCfg
	AppConfig = aCfg
}

func initLogger() {
	lCfg := &RunConfig.Log
	if !lCfg.Separate {
		Logger = zap.New(logger.NewCore(lCfg), zap.AddCaller()) //AddCaller()为显示文件名和行号
	} else {
		Logger = zap.New(logger.NewMultiCore(lCfg), zap.AddCaller()) //AddCaller()为显示文件名和行号
	}
	zap.ReplaceGlobals(Logger) // 替换 zap 库中全局变量，可以直接通过 zap.L() 访问
}

func initEngine() {
	if !RunConfig.Debug {
		gin.SetMode(gin.ReleaseMode)
	}
	engine = gin.New()
	engine.Use(middleware.Cors())
	engine.Use(middleware.GinLogger(Logger), middleware.GinRecovery(Logger, true))
	engine.Use(middleware.HttpInterceptor())
	engineBindFS()
	engineBindRouters()
}

func engineBindFS() {
	fCfg := &AppConfig.Ffmpeg
	hlsPath := filepath.Join(util.GetWorkPath(), fCfg.ToHls.HlsRoot)
	_, _ = util.CheckDir(hlsPath)
	engine.StaticFS("/"+fCfg.ToHls.HlsRoot, http.Dir(hlsPath))
}

func engineBindRouters() {
	fCfg := &AppConfig.Ffmpeg
	group := engine.Group("/ffmpeg")
	group.Use(middleware.ProbePayloadInterceptor())
	ffmpeg.Init(fCfg)
	ffmpeg.BindRouters(group)
}

func Run(ctx context.Context) {
	Ctx = ctx
	port := AppConfig.Server.Port
	runMsg := "Listening and serving HTTP on :" + port
	fmt.Printf(runMsg + "\n")
	Logger.Info(runMsg)
	if err := engine.Run(":" + port); err != nil {
		Logger.Error(err.Error())
		return
	}
}