package handler

import (
	"crypto/sha256"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"fusenapi/constants"
	"fusenapi/utils/basic"
	"github.com/zeromicro/go-zero/rest/httpx"
	"net/http"
	"time"

	"fusenapi/server/websocket/internal/svc"
	"fusenapi/server/websocket/internal/types"
)

func RenderNotifyHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req types.RenderNotifyReq
		_, err := basic.RequestParse(w, r, svcCtx, &req)
		if err != nil {
			httpx.OkJsonCtx(r.Context(), w, basic.Response{
				Code:    basic.CodeRequestParamsErr.Code,
				Message: "err param",
				Data:    nil,
			})
			return
		}
		if len(req.NotifyList) == 0 {
			httpx.OkJsonCtx(r.Context(), w, basic.Response{
				Code:    basic.CodeRequestParamsErr.Code,
				Message: "invalid param,notify list is empty",
				Data:    nil,
			})
			return
		}
		if time.Now().Unix()-120 > req.Time /*|| req.Time > time.Now().Unix() */ {
			httpx.OkJsonCtx(r.Context(), w, basic.Response{
				Code:    basic.CodeRequestParamsErr.Code,
				Message: "invalid param,time is expired",
				Data:    nil,
			})
			return
		}
		//验证签名 sha256
		notifyByte, _ := json.Marshal(req.NotifyList)
		h := sha256.New()
		h.Write([]byte(fmt.Sprintf(constants.RENDER_NOTIFY_SIGN_KEY, string(notifyByte), req.Time)))
		signHex := h.Sum(nil)
		sign := hex.EncodeToString(signHex)
		if req.Sign != sign {
			httpx.OkJsonCtx(r.Context(), w, basic.Response{
				Code:    basic.CodeRequestParamsErr.Code,
				Message: "invalid sign",
				Data:    nil,
			})
			return
		}
		//遍历链接
		mapConnPool.Range(func(key, value any) bool {
			ws, ok := value.(wsConnectItem)
			if !ok {
				return false
			}
			ws.setOutRenderImage(req)
			return true
		})
		httpx.OkJsonCtx(r.Context(), w, basic.Response{
			Code:    200,
			Message: "success",
			Data:    nil,
		})
	}
}