| 1 | import type { DraftGenerationTask } from '@/api/ai/ai.types' |
| 2 | import { useCallback, useEffect, useRef } from 'react' |
| 3 | import { apiQueryDraftGenerationTasks } from '@/api/ai/ai.api' |
| 4 | |
| 5 | const QUERY_BATCH_SIZE = 10 |
| 6 | |
| 7 | function chunkTaskIds(taskIds: string[]) { |
| 8 | const chunks: string[][] = [] |
| 9 | for (let i = 0; i < taskIds.length; i += QUERY_BATCH_SIZE) { |
| 10 | chunks.push(taskIds.slice(i, i + QUERY_BATCH_SIZE)) |
| 11 | } |
| 12 | return chunks |
| 13 | } |
| 14 | |
| 15 | interface UseGenerationPollingOptions { |
| 16 | /** 是否启用轮询 */ |
| 17 | enabled: boolean |
| 18 | /** 需要查询的生成任务 ID */ |
| 19 | taskIds: string[] |
| 20 | /** 轮询间隔（毫秒） */ |
| 21 | interval?: number |
| 22 | /** 每次轮询返回任务详情 */ |
| 23 | onTasksUpdate: (tasks: DraftGenerationTask[]) => void |
| 24 | /** count 减少（有任务完成）时的回调 */ |
| 25 | onTaskCompleted: () => void |
| 26 | /** 每次轮询更新 count */ |
| 27 | onCountUpdate?: (count: number) => void |
| 28 | } |
| 29 | |
| 30 | export function useGenerationPolling({ |
| 31 | enabled, |
| 32 | taskIds, |
| 33 | interval = 5000, |
| 34 | onTasksUpdate, |
| 35 | onTaskCompleted, |
| 36 | onCountUpdate, |
| 37 | }: UseGenerationPollingOptions) { |
| 38 | const prevCountRef = useRef<number | null>(null) |
| 39 | const isRequestRunningRef = useRef(false) |
| 40 | const taskIdsRef = useRef(taskIds) |
| 41 | taskIdsRef.current = taskIds |
| 42 | |
| 43 | // 用 ref 保持回调最新引用，避免轮询重启 |
| 44 | const onTaskCompletedRef = useRef(onTaskCompleted) |
| 45 | onTaskCompletedRef.current = onTaskCompleted |
| 46 | const onCountUpdateRef = useRef(onCountUpdate) |
| 47 | onCountUpdateRef.current = onCountUpdate |
| 48 | const onTasksUpdateRef = useRef(onTasksUpdate) |
| 49 | onTasksUpdateRef.current = onTasksUpdate |
| 50 | |
| 51 | const poll = useCallback(async () => { |
| 52 | if (isRequestRunningRef.current) { |
| 53 | return |
| 54 | } |
| 55 | const currentTaskIds = taskIdsRef.current |
| 56 | if (currentTaskIds.length === 0) { |
| 57 | return |
| 58 | } |
| 59 | |
| 60 | isRequestRunningRef.current = true |
| 61 | |
| 62 | try { |
| 63 | const results = await Promise.all( |
| 64 | chunkTaskIds(currentTaskIds).map(async (ids) => { |
| 65 | const res = await apiQueryDraftGenerationTasks(ids) |
| 66 | return res?.data || [] |
| 67 | }), |
| 68 | ) |
| 69 | const tasks = results.flat() |
| 70 | const newCount = tasks.filter(task => task.status === 'generating').length |
| 71 | onTasksUpdateRef.current(tasks) |
| 72 | onCountUpdateRef.current?.(newCount) |
| 73 | |
| 74 | // 如果之前有记录的 count 且新 count 更小，说明有任务完成了 |
| 75 | if (prevCountRef.current !== null && newCount < prevCountRef.current) { |
| 76 | onTaskCompletedRef.current() |
| 77 | } |
| 78 | |
| 79 | prevCountRef.current = newCount |
| 80 | } |
| 81 | catch (error) { |
| 82 | // 静默失败 |
| 83 | } |
| 84 | finally { |
| 85 | isRequestRunningRef.current = false |
| 86 | } |
| 87 | }, []) |
| 88 | |
| 89 | useEffect(() => { |
| 90 | if (!enabled || taskIds.length === 0) { |
| 91 | prevCountRef.current = null |
| 92 | return |
| 93 | } |
| 94 | |
| 95 | // 立即执行一次 |
| 96 | poll() |
| 97 | |
| 98 | const timer = setInterval(poll, interval) |
| 99 | return () => { |
| 100 | clearInterval(timer) |
| 101 | } |
| 102 | }, [enabled, interval, poll, taskIds.length]) |
| 103 | } |
| 104 |