package handlers

import (
	"net/http"
	"sort"

	"github.com/gin-gonic/gin"

	"qr-scanner/models"
	"qr-scanner/services"
)

type ResultsHandler struct {
	store *services.TaskStore
}

func NewResultsHandler(store *services.TaskStore) *ResultsHandler {
	return &ResultsHandler{store: store}
}

func (h *ResultsHandler) GetResults(c *gin.Context) {
	taskID := c.Param("taskID")
	task, ok := h.store.Get(taskID)
	if !ok {
		fail(c, http.StatusNotFound, "任务不存在")
		return
	}
	if task.Status == services.TaskExpired {
		fail(c, http.StatusGone, "任务已过期")
		return
	}

	resultsMap := task.Results()
	indexes := make([]int, 0, len(resultsMap))
	for i := range resultsMap {
		indexes = append(indexes, i)
	}
	sort.Ints(indexes)

	items := make([]models.ScanResult, 0, len(indexes))
	for _, i := range indexes {
		items = append(items, resultsMap[i])
	}

	respondOK(c, gin.H{
		"taskID": task.ID,
		"status": task.Status,
		"items":  items,
	})
}