package web

import (
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/logger"
	"github.com/gofiber/fiber/v2/middleware/recover"
	"github.com/gofiber/fiber/v2/middleware/requestid"
	"github.com/google/uuid"
	"github.com/jxskiss/base62"
	"log/slog"
	"net/http"
	_ "net/http/pprof"
	"platform/web/auth"
	g "platform/web/globals"
	q "platform/web/queries"
	"runtime"
	"strings"
	"time"
)

// region web

type Config struct {
	Listen string
}

type Server struct {
	config *Config
	fiber  *fiber.App
}

func New(config *Config) (*Server, error) {
	_config := config
	if config == nil {
		_config = &Config{}
	}

	return &Server{
		config: _config,
	}, nil
}

func (s *Server) Run() error {

	// inits
	g.Init()
	q.SetDefault(g.DB)

	// config
	s.fiber = fiber.New(fiber.Config{
		ProxyHeader:  fiber.HeaderXForwardedFor,
		ErrorHandler: ErrorHandler,
	})

	// middlewares
	s.fiber.Use(newRecover())
	s.fiber.Use(newRequestId())
	s.fiber.Use(newLogger())

	// routes
	ApplyRouters(s.fiber)

	// pprof
	go func() {
		runtime.SetBlockProfileRate(1)
		err := http.ListenAndServe(":6060", nil)
		if err != nil {
			slog.Error("pprof 服务错误", slog.Any("err", err))
		}
	}()

	// listen
	slog.Info("服务开始监听 :8080")
	err := s.fiber.Listen("0.0.0.0:8080")
	if err != nil {
		slog.Error("Failed to start server", slog.Any("err", err))
	}

	slog.Info("服务已停止")
	return nil
}

func (s *Server) Stop() {
	err := g.ExitRedis()
	if err != nil {
		slog.Error("Failed to close Redis connection", slog.Any("err", err))
	}

	err = g.ExitOrm()
	if err != nil {
		slog.Error("Failed to close database connection", slog.Any("err", err))
	}

	err = s.fiber.Shutdown()
	if err != nil {
		slog.Error("Failed to shutdown server", slog.Any("err", err))
	}
}

// endregion

// region middlewares

func newRequestId() fiber.Handler {
	return requestid.New(requestid.Config{
		Generator: func() string {
			binary, _ := uuid.New().MarshalBinary()
			return base62.EncodeToString(binary)
		},
	})
}

func newLogger() fiber.Handler {
	return logger.New(logger.Config{
		DisableColors: true,
		Format:        "🚀 ${time} | ${locals:authtype} ${locals:authid} | ${method} ${path} | ${status} | ${latency} | ${error}\n",
		TimeFormat:    "2006-01-02 15:04:05",
		TimeZone:      "Asia/Shanghai",
		Next: func(c *fiber.Ctx) bool {
			authCtx, ok := c.Locals("auth").(*auth.Context)
			if ok {
				c.Locals("authtype", authCtx.Payload.Type.ToStr())
				c.Locals("authid", authCtx.Payload.Id)
			} else {
				c.Locals("authtype", auth.PayloadNone.ToStr())
				c.Locals("authid", 0)
			}
			return false
		},
		Done: func(c *fiber.Ctx, logBytes []byte) {
			var logStr = strings.TrimPrefix(string(logBytes), "🚀")
			var logVars = strings.Split(logStr, "|")

			var reqTimeStr = strings.TrimSpace(logVars[0])
			reqTime, err := time.ParseInLocation("2006-01-02 15:04:05", reqTimeStr, time.Local)
			if err != nil {
				slog.Error("时间解析错误", slog.Any("err", err))
				return
			}

			var latency = strings.TrimSpace(logVars[4])
			var errStr = strings.TrimSpace(logVars[5])

			slog.Info("接口请求",
				slog.String("identity", c.Locals("authtype").(string)),
				slog.Int("visitor", c.Locals("authid").(int)),
				slog.String("ip", c.IP()),
				slog.String("ua", c.Get("User-Agent")),
				slog.String("method", c.Method()),
				slog.String("path", c.Path()),
				slog.Int("status", c.Response().StatusCode()),
				slog.String("error", errStr),
				slog.String("latency", latency),
				slog.Time("time", reqTime),
			)
		},
	})
}

func newRecover() fiber.Handler {
	return recover.New(recover.Config{
		EnableStackTrace: true,
	})
}

// endregion