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/pkg/u"
	"platform/web/auth"
	g "platform/web/globals"
	"platform/web/globals/orm"
	m "platform/web/models"
	q "platform/web/queries"
	"runtime"
	"strconv"
	"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("Server started on :8080")
	err := s.fiber.Listen(":8080")
	if err != nil {
		slog.Error("Failed to start server", slog.Any("err", err))
	}

	slog.Info("Server stopped")
	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 {
			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 authInfo = strings.Split(strings.TrimSpace(logVars[1]), " ")
			var authType = auth.PayloadTypeFromStr(strings.TrimSpace(authInfo[0]))
			authID, err := strconv.Atoi(strings.TrimSpace(authInfo[1]))
			if err != nil {
				slog.Error("负载ID解析错误", slog.Any("err", err))
				return
			}

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

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

			var item = &m.LogsRequest{
				IP:      c.IP(),
				Ua:      u.P(c.Get("User-Agent")),
				Method:  c.Method(),
				Path:    c.Path(),
				Latency: &latency,
				Status:  int32(c.Response().StatusCode()),
				Error:   &errStr,
				Time:    u.P(orm.LocalDateTime(reqTime)),
			}
			if authType != auth.PayloadNone {
				item.Identity = u.P(int32(authType))
			}
			if authID != 0 {
				item.Visitor = u.P(int32(authID))
			}

			err = q.LogsRequest.Create(item)
			if err != nil {
				slog.Error("日志记录错误", slog.Any("err", err))
				return
			}
		},
	})
}

func newRecover() fiber.Handler {
	return recover.New()
}

// endregion