package config

import (
	auth_middleware "cls-server/internal/infrastructure/middleware/auth"
	Ihttp "cls-server/pkg/http"
	"cls-server/pkg/logger"
	"cls-server/pkg/sms"
	"cls-server/pkg/util/security"
	"cls-server/pkg/xorm_engine"
	"cls-server/ui"
	"context"
	"fmt"
	"github.com/cenkalti/backoff/v4"
	_ "github.com/go-sql-driver/mysql"
	"github.com/redis/go-redis/v9"
	"net"
	"net/http"
	"strings"

	middleware "cls-server/pkg/web/middleware"

	"github.com/gin-gonic/gin"
	"go.uber.org/fx"
	"xorm.io/xorm"
	"xorm.io/xorm/names"
)

func NewGinEngine(lc fx.Lifecycle, auth *auth_middleware.AuthMiddleware, appConfig *AppConfig) *gin.Engine {
	if strings.ToLower(appConfig.ServerConfig.Mode) == "prod" {
		gin.SetMode(gin.ReleaseMode)
	}
	handler := gin.New()
	handler.Use(gin.Recovery())
	handler.Use(auth.Handle())
	handler.Use(middleware.ServeRoot("/", "dist", &ui.RESOURCE))
	handler.NoRoute(func(context *gin.Context) {
		if context.Request.RequestURI != "/" {
			context.Redirect(http.StatusTemporaryRedirect, "/")
		}
	})
	srv := &http.Server{Addr: fmt.Sprintf(":%d", appConfig.ServerConfig.Port), Handler: handler}
	lc.Append(fx.Hook{
		OnStart: func(ctx context.Context) error {
			ln, err := net.Listen("tcp", srv.Addr)
			if err != nil {
				return err
			}
			log.Infof("Web server starting on port %v", srv.Addr)
			log.Info("Press Ctrl+C to stop")
			go func() {
				if err0 := srv.Serve(ln); err0 != nil {
					log.Error(err0)
				}
			}()
			return nil
		},
		OnStop: func(ctx context.Context) error {
			return srv.Shutdown(ctx)
		},
	})
	return handler
}

func NewXormEngine(appConfig *AppConfig, l logger.New) *xorm_engine.Engine {
	dbConfig := appConfig.MysqlConfig
	url := fmt.Sprintf("%s:%s@(%s)/%s", dbConfig.Username, dbConfig.Password, dbConfig.Address, dbConfig.Database)
	engine, err := xorm.NewEngineWithParams("mysql", url, dbConfig.Params)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("done")
	engine.SetTableMapper(names.NewPrefixMapper(names.GonicMapper{}, "lc_"))
	engine.SetColumnMapper(names.GonicMapper{})
	engine.SetLogger(logger.NewXormLogger(l("xorm")))
	if dbConfig.ShowSql {
		engine.ShowSQL(true)
	}
	if err = backoff.Retry(engine.Ping, backoff.WithMaxRetries(backoff.NewExponentialBackOff(), 10)); err != nil {
		log.Fatal(err)
	}
	urlCls := fmt.Sprintf("%s:%s@(%s)/%s", dbConfig.Username, dbConfig.Password, dbConfig.Address, dbConfig.DatabaseCls)
	engineCls, err := xorm.NewEngineWithParams("mysql", urlCls, dbConfig.Params)
	if err != nil {
		log.Fatal(err)
	}
	if err = backoff.Retry(engineCls.Ping, backoff.WithMaxRetries(backoff.NewExponentialBackOff(), 10)); err != nil {
		log.Fatal(err)
	}

	return xorm_engine.NewEngine(engine, engineCls)
}

func NewRedisClient(appConfig *AppConfig) redis.Cmdable {
	dbConfig := appConfig.RedisConfig
	var rdbCli redis.Cmdable
	switch dbConfig.Mode {
	case "sentinel":
		rdbCli = redis.NewFailoverClient(&redis.FailoverOptions{
			MasterName:       dbConfig.MasterName,
			SentinelAddrs:    dbConfig.SentinelAddrs,
			SentinelUsername: dbConfig.SentinelUsername,
			SentinelPassword: dbConfig.SentinelPassword,
			Username:         dbConfig.Username,
			Password:         dbConfig.Password,
			DB:               0,
		})
	case "cluster":
		rdbCli = redis.NewClusterClient(&redis.ClusterOptions{
			Addrs:    dbConfig.Addrs,
			Username: dbConfig.Username,
			Password: dbConfig.Password,
		})
	default:
		rdbCli = redis.NewClient(&redis.Options{
			Addr:     dbConfig.Addr,
			Username: dbConfig.Username,
			Password: dbConfig.Password,
			DB:       dbConfig.DB,
		})
	}
	if err := backoff.Retry(func() error {
		return rdbCli.Ping(context.Background()).Err()
	}, backoff.WithMaxRetries(backoff.NewExponentialBackOff(), 10)); err != nil {
		log.Fatal(err)
	}

	return rdbCli
}

func NewLoggerFactory(config *AppConfig) logger.New {
	return func(name string) logger.Logger {
		var options []logger.Option
		if v, ok := config.LogConfig.Loggers[strings.ToLower(name)]; ok {
			options = append(options, logger.Level(logger.LogLevel(v)))
		}
		return logger.NewLogger(name, options...)
	}
}

func NewPasswordEncoder() security.PasswordEncoder {
	return &security.BCryptPasswordEncoder{}
}

func NewSmsService(client *Ihttp.Client) sms.IsmsService {
	return sms.NewDebugSmsService(client)
}
func NewInternalClient() *Ihttp.Client {
	return Ihttp.NewClient()
}

func NewJWTAuthMiddleware(appConfig *AppConfig, redis redis.Cmdable) *auth_middleware.AuthMiddleware {
	return auth_middleware.NewAuthMiddleware(appConfig.JwtConfig.Secret, nil, redis)
}