package logic

import (
	"crypto/sha256"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"fusenapi/constants"
	"fusenapi/utils/basic"
	"time"

	"context"

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

	"github.com/zeromicro/go-zero/core/logx"
)

type RenderNotifyLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewRenderNotifyLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RenderNotifyLogic {
	return &RenderNotifyLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

// 处理进入前逻辑w,r
// func (l *RenderNotifyLogic) BeforeLogic(w http.ResponseWriter, r *http.Request) {
// }

// 处理逻辑后 w,r 如:重定向, resp 必须重新处理
// func (l *RenderNotifyLogic) AfterLogic(w http.ResponseWriter, r *http.Request, resp *basic.Response) {
// // httpx.OkJsonCtx(r.Context(), w, resp)
// }

func (l *RenderNotifyLogic) RenderNotify(req *types.RenderNotifyReq) (resp *basic.Response) {
	if len(req.NotifyList) == 0 {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "notify list is empty")
	}
	if time.Now().Unix()-120 > req.Time /*|| req.Time > time.Now().Unix() */ {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "time is expire")
	}
	//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 {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "invalid")
	}
	//遍历websocket链接把数据传进去
	mapConnPool.Range(func(key, value any) bool {
		//断言连接
		ws, ok := value.(wsConnectItem)
		if !ok {
			return false
		}
		dataList := make([][]byte, 0, len(req.NotifyList))
		deleteRenderKey := make([]string, 0, len(req.NotifyList))
		//遍历数据
		for _, notifyItem := range req.NotifyList {
			renderKey := ws.getRenderImageMapKey(notifyItem.ProductId, notifyItem.SizeId, notifyItem.TemplateId)
			//查询
			_, ok = ws.renderImage[renderKey]
			if !ok {
				continue
			}
			responseData := types.RenderImageRspMsg{
				ProductId:  notifyItem.ProductId,
				SizeId:     notifyItem.SizeId,
				TemplateId: notifyItem.TemplateId,
				Source:     "我是渲染资源",
			}
			b, _ := json.Marshal(responseData)
			dataList = append(dataList, b)
			deleteRenderKey = append(deleteRenderKey, renderKey)
		}
		//删除对应的需要渲染的图片map
		ws.deleteRenderMapVal(deleteRenderKey)
		//发送数据
		ws.sendToOutChan(dataList)
		return true
	})
	return resp.SetStatus(basic.CodeOK)
}