package logic

import (
	"context"
	"github.com/gin-gonic/gin"
	"net/http"
	"sonet/internal/gateway_http/config"
	"sonet/pkg/grpc/generic"
	"sonet/pkg/protocol/session"
	"sonet/pkg/utils/resp"
	"sonet/pkg/utils/strs"
)

type GrpcGenericHandler struct {
	grpcFactory *generic.GrpcGenericClientFactory
}

func NewGrpcGenericHandler(grpcFactory *generic.GrpcGenericClientFactory) *GrpcGenericHandler {
	return &GrpcGenericHandler{
		grpcFactory: grpcFactory,
	}
}

func (h *GrpcGenericHandler) Route(route gin.IRoutes) {
	route.POST("/:svc/:method", h.handler)
}

func (h *GrpcGenericHandler) handler(c *gin.Context) {
	ctx := context.Background()
	subject, err := config.GetSubject(c)
	if err == nil {
		ctx = session.PutSubject(ctx, session.NewRpcSubject(subject.Uid))
	}

	svc := strs.UpperInitialLetter(c.Param("svc"))
	method := strs.UpperInitialLetter(c.Param("method"))
	if svc == "" || method == "" {
		c.JSON(http.StatusBadRequest, resp.Error("svc not found"))
		return
	}

	grpcClient, err := h.grpcFactory.GetClient(ctx, svc)
	if err != nil {
		c.JSON(http.StatusForbidden, resp.Error(err.Error()))
		return
	}
	body := make(map[string]interface{})
	err = c.BindJSON(&body)
	if err != nil {
		c.JSON(http.StatusBadRequest, resp.Error("parse request body error: "+err.Error()))
		return
	}

	res, err := grpcClient.InvokeUnaryJson(ctx, method, body)
	if err != nil {
		c.JSON(http.StatusInternalServerError, resp.Error(err.Error()))
		return
	}
	// j, err := res.MarshalJSON()
	// c.Render(http.StatusOK, RenderMarshaledJson{j})
	c.JSON(http.StatusOK, resp.Success(res))
}