package route

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strconv"

	"github.com/assimon/luuu/config"
	"github.com/assimon/luuu/controller/comm"
	"github.com/assimon/luuu/middleware"
	"github.com/assimon/luuu/model/mdb"
	"github.com/assimon/luuu/util/constant"
	"github.com/assimon/luuu/util/sign"
	"github.com/labstack/echo/v4"
)

// RegisterRoute 路由注册
func RegisterRoute(e *echo.Echo) {
	e.Any("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "hello epusdt, https://github.com/GMwalletApp/epusdt")
	})

	payRoute := e.Group("/pay")
	payRoute.GET("/checkout-counter/:trade_id", comm.Ctrl.CheckoutCounter)
	payRoute.GET("/check-status/:trade_id", comm.Ctrl.CheckStatus)
	payRoute.POST("/switch-network", comm.Ctrl.SwitchNetwork)

	// payment routes
	paymentRoute := e.Group("/payments")

	// for epusdt
	epusdtV1 := paymentRoute.Group("/epusdt/v1")
	epusdtV1.POST("/order/create-transaction", func(ctx echo.Context) error {
		// add default token and currency for old plugin

		body := make(map[string]interface{})
		if err := ctx.Bind(&body); err != nil {
			return comm.Ctrl.FailJson(ctx, err)
		}
		if _, ok := body["token"]; !ok {
			body["token"] = "usdt"
		}
		if _, ok := body["currency"]; !ok {
			body["currency"] = "cny"
		}
		if _, ok := body["network"]; !ok {
			body["network"] = "tron"
		}
		ctx.Set("request_body", body)

		jsonBytes, err := json.Marshal(body)
		if err != nil {
			return comm.Ctrl.FailJson(ctx, err)
		}
		ctx.Request().Body = io.NopCloser(bytes.NewBuffer(jsonBytes))
		ctx.Request().ContentLength = int64(len(jsonBytes))

		return comm.Ctrl.CreateTransaction(ctx)
	}, middleware.CheckApiSign())

	// gmpay v1 routes
	gmpayV1 := paymentRoute.Group("/gmpay/v1")
	gmpayV1.POST("/order/create-transaction", comm.Ctrl.CreateTransaction, middleware.CheckApiSign())

	// wallet management routes
	walletV1 := gmpayV1.Group("/wallet", middleware.CheckApiToken())
	walletV1.POST("/add", comm.Ctrl.AddWallet)
	walletV1.GET("/list", comm.Ctrl.ListWallets)
	walletV1.GET("/:id", comm.Ctrl.GetWallet)
	walletV1.POST("/:id/status", comm.Ctrl.ChangeWalletStatus)
	walletV1.POST("/:id/delete", comm.Ctrl.DeleteWallet)

	// epay v1 routes
	epayV1 := paymentRoute.Group("/epay/v1")
	epayV1.Match([]string{http.MethodPost, http.MethodGet}, "/order/create-transaction/submit.php", func(ctx echo.Context) error {
		params := make(map[string]interface{})
		copyParams := func(values map[string][]string) {
			for k, v := range values {
				if len(v) == 0 {
					continue
				}
				params[k] = v[0]
			}
		}

		copyParams(ctx.QueryParams())

		formParams, err := ctx.FormParams()
		if err != nil && ctx.Request().Method == http.MethodPost {
			return comm.Ctrl.FailJson(ctx, fmt.Errorf("invalid epay form params: %w", err))
		}
		if err == nil {
			copyParams(formParams)
		}

		getString := func(m map[string]interface{}, key string) string {
			v, ok := m[key]
			if !ok {
				return ""
			}
			s, ok := v.(string)
			if !ok {
				return ""
			}
			return s
		}

		signstr := getString(params, "sign")
		if signstr == "" {
			return constant.SignatureErr
		}

		delete(params, "sign")
		delete(params, "sign_type")

		// we need to add pid to params for signature verification
		params["pid"] = config.GetEpayPid()

		checkSignature, err := sign.Get(params, config.GetApiAuthToken())
		if err != nil {
			return constant.SignatureErr
		}
		if checkSignature != signstr {
			return constant.SignatureErr
		}

		money := getString(params, "money")
		name := getString(params, "name")
		notifyURL := getString(params, "notify_url")
		outTradeNo := getString(params, "out_trade_no")
		returnURL := getString(params, "return_url")

		amountFloat, err := strconv.ParseFloat(money, 64)
		if err != nil {
			return comm.Ctrl.FailJson(ctx, fmt.Errorf("invalid money value: %s", money))
		}

		body := map[string]interface{}{
			"token":        "usdt",
			"currency":     "cny",
			"network":      "tron",
			"amount":       amountFloat,
			"notify_url":   notifyURL,
			"order_id":     outTradeNo,
			"redirect_url": returnURL,
			"signature":    signstr,
			"name":         name,
			"payment_type": mdb.PaymentTypeEpay,
		}

		ctx.Set("request_body", body)

		jsonBytes, err := json.Marshal(body)
		if err != nil {
			return comm.Ctrl.FailJson(ctx, err)
		}

		ctx.Request().Body = io.NopCloser(bytes.NewBuffer(jsonBytes))
		ctx.Request().ContentLength = int64(len(jsonBytes))
		ctx.Request().Method = http.MethodPost
		ctx.Request().Header.Set("Content-Type", "application/json")

		return comm.Ctrl.CreateTransactionAndRedirect(ctx)

	})
}