package middleware

import (
	"baize_scaffold/gateway/gw/config"
	"net/http"

	"git.sxidc.com/go-framework/baize/framework/core/api/response"
	"git.sxidc.com/go-framework/baize/framework/gateway"
	"git.sxidc.com/service-supports/fslog"
	"github.com/dgrijalva/jwt-go/request"
	"github.com/pkg/errors"
)

type AuthenticationResult struct {
	response.MsgResponse
	TenantID   string `json:"tenantId"`
	TenantName string `json:"tenantName"`
	UserID     string `json:"userId"`
	UserName   string `json:"userName"`
	Roles      []Role `json:"roles"`
}

type Role struct {
	ID   string `json:"id"`
	Name string `json:"name"`
}

type TenantInfo struct {
	ID   string
	Name string
}

func (t TenantInfo) GetID() string {
	return t.ID
}

func (t TenantInfo) GetName() string {
	return t.Name
}

type UserInfo struct {
	ID       string
	UserName string
	Roles    []Role
}

func (u UserInfo) GetID() string {
	return u.ID
}

func (u UserInfo) GetUserName() string {
	return u.UserName
}

func (u UserInfo) GetName() string {
	return u.UserName
}

func Authentication() gateway.Handler {
	return func(requestBuilder *gateway.RequestBuilder) {
		c := requestBuilder.ApiContext()
		respFunc := response.SendMapResponse

		token, err := request.AuthorizationHeaderExtractor.ExtractToken(c.Request)
		if err != nil {
			fslog.Error(err)
			respFunc(c, http.StatusUnauthorized, map[string]any{
				"accessToken": "",
			}, err)
			c.Abort()
			return
		}

		var requestErr error
		authResult := new(AuthenticationResult)
		requestBuilder.Post(&gateway.PostRequest{
			Url: config.GetGatewayConfig().ServicesConfig.UMBaseUrl + "/utm/api/v1/auth",
			Body: map[string]any{
				"token":    token,
				"resource": c.FullPath(),
				"action":   c.Request.Method,
			},
		}).ResponseErrorCallback(func(c *gateway.RequestBuilderContext, err error) {
			requestErr = err
		}).ResponseSuccessCallback(func(c *gateway.RequestBuilderContext) {
			err := c.HistoryRequests()[0].Response().Json(authResult)
			if err != nil {
				requestErr = err
				return
			}

			if !authResult.Success {
				requestErr = errors.New(authResult.Msg)
				return
			}

			return
		}).Request()

		if requestErr != nil {
			fslog.Error(err)
			respFunc(requestBuilder.ApiContext(), http.StatusUnauthorized, map[string]any{
				"accessToken": "",
			}, requestErr)
			requestBuilder.ApiContext().Abort()
			return
		}

		c.SetUserInfo(&UserInfo{
			ID:       authResult.UserID,
			UserName: authResult.UserName,
			Roles:    authResult.Roles,
		})

		c.SetTenantInfo(&TenantInfo{
			ID:   authResult.TenantID,
			Name: authResult.TenantName,
		})

		c.Next()
	}
}