package router

import (
	"chatapp3-golang/internal/service/registerreward"
	"encoding/json"
	"fmt"
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/gin-gonic/gin"
)

// registerRegisterRewardRoutes 注册注册奖励联调与后台路由。
func registerRegisterRewardRoutes(
	engine *gin.Engine,
	javaClient authGateway,
	registerRewardService *registerreward.RegisterRewardService,
) {
	if registerRewardService == nil {
		return
	}

	appGroup := engine.Group("/app/register-reward")
	appGroup.Use(authMiddleware(javaClient))
	appGroup.GET("/status", func(c *gin.Context) {
		resp, err := registerRewardService.GetStatus(c.Request.Context(), mustAuthUser(c))
		if err != nil {
			writeError(c, err)
			return
		}
		writeOK(c, resp)
	})
	appGroup.GET("/content", func(c *gin.Context) {
		resp, err := registerRewardService.GetContent(c.Request.Context(), mustAuthUser(c))
		if err != nil {
			writeError(c, err)
			return
		}
		writeOK(c, resp)
	})

	debugGroup := engine.Group("/debug/register-reward")
	debugGroup.Use(authMiddleware(javaClient))
	debugGroup.GET("/notice/stream", func(c *gin.Context) {
		user := mustAuthUser(c)
		stream, cancel := registerRewardService.SubscribeDebugNotices(user.UserID)
		defer cancel()

		flusher, ok := c.Writer.(http.Flusher)
		if !ok {
			writeError(c, registerreward.NewAppError(http.StatusInternalServerError, "sse_not_supported", "streaming is not supported"))
			return
		}

		c.Writer.Header().Set("Content-Type", "text/event-stream")
		c.Writer.Header().Set("Cache-Control", "no-cache")
		c.Writer.Header().Set("Connection", "keep-alive")
		c.Writer.Header().Set("X-Accel-Buffering", "no")
		c.Status(http.StatusOK)

		fmt.Fprint(c.Writer, ": connected\n\n")
		flusher.Flush()

		heartbeat := time.NewTicker(20 * time.Second)
		defer heartbeat.Stop()

		for {
			select {
			case <-c.Request.Context().Done():
				return
			case <-heartbeat.C:
				fmt.Fprint(c.Writer, ": ping\n\n")
				flusher.Flush()
			case event, ok := <-stream:
				if !ok {
					return
				}
				payload, err := json.Marshal(event)
				if err != nil {
					writeError(c, err)
					return
				}
				fmt.Fprintf(c.Writer, "event: register-reward\n")
				fmt.Fprintf(c.Writer, "data: %s\n\n", payload)
				flusher.Flush()
			}
		}
	})

	residentGroup := engine.Group("/resident-activity/register-reward")
	residentGroup.Use(consoleAuthMiddleware(javaClient))
	residentGroup.GET("/daily-record/page", func(c *gin.Context) {
		cursor, _ := strconv.Atoi(strings.TrimSpace(c.DefaultQuery("cursor", "1")))
		limit, _ := strconv.Atoi(strings.TrimSpace(c.DefaultQuery("limit", "20")))
		resp, err := registerRewardService.PageDailyRecords(
			c.Request.Context(),
			c.Query("sysOrigin"),
			c.Query("claimDate"),
			cursor,
			limit,
		)
		if err != nil {
			writeError(c, err)
			return
		}
		writeOK(c, resp)
	})
}