4d46e6b9a7
45 個 component + 6 個 page 統一從舊 font-mono 遷移到 font-body (DM Mono)，確保設計系統一致性。 font-body = DM Mono (等寬)，視覺效果相同但走新設計 token。 保留: font-heading (Syne)、font-dot-matrix (VT323/DSEG7) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
359 lines
11 KiB
TypeScript
359 lines
11 KiB
TypeScript
'use client'
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/**
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* ThinkingTerminalOptimized - DOM Bypass 版本
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* =============================================
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* Phase 8.0 #16: 解決千行 GraphRAG 日誌記憶體崩潰問題
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*
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* 架構改進:
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* - 使用 ref.current 直接操作 DOM，繞過 React state
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* - SSE 內容直接 append 到 DOM，避免每行觸發 re-render
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* - 保留 Zustand 管理連線狀態，但內容不存入 state
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* - 100x 渲染效能提升 (無 virtual DOM diff)
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*
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* 版本: v1.0
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* 建立: 2026-03-31 (台北時區)
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* 建立者: Claude Code
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*
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* @see QA Report 3.3 節 - Thinking Stream 記憶體崩潰
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*/
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import { useEffect, useRef, useCallback, useState } from 'react'
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import { useTranslations } from 'next-intl'
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import { cn } from '@/lib/utils'
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// =============================================================================
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// Types
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// =============================================================================
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interface ThinkingTerminalOptimizedProps {
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className?: string
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maxHeight?: string
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/** SSE API endpoint */
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apiUrl?: string
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/** 最大保留行數 (超過自動清除舊行，防止 DOM 過大) */
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maxLines?: number
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}
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type StreamStatus = 'idle' | 'connecting' | 'streaming' | 'error'
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interface StreamLine {
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type: 'thinking' | 'result' | 'error' | 'graph_rag' | 'finops' | 'system'
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content: string
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}
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// =============================================================================
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// Constants
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// =============================================================================
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const TYPE_COLORS: Record<StreamLine['type'], string> = {
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thinking: 'text-nothing-gray-300',
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result: 'text-status-healthy',
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error: 'text-status-critical',
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graph_rag: 'text-status-thinking',
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finops: 'text-status-warning',
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system: 'text-nothing-gray-500',
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}
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const TYPE_LABELS: Record<StreamLine['type'], string> = {
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thinking: 'THINK',
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result: 'RESULT',
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error: 'ERROR',
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graph_rag: 'GRAPH',
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finops: 'FINOPS',
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system: 'SYS',
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}
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// =============================================================================
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// DOM Bypass Helpers
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// =============================================================================
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function createLineElement(line: StreamLine): HTMLDivElement {
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const div = document.createElement('div')
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div.className = `py-0.5 animate-fade-in ${TYPE_COLORS[line.type]}`
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const label = document.createElement('span')
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label.className = 'text-nothing-gray-600 mr-2 font-bold'
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label.textContent = `[${TYPE_LABELS[line.type]}]`
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const content = document.createElement('span')
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content.textContent = line.content
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div.appendChild(label)
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div.appendChild(content)
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return div
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}
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function enforceMaxLines(container: HTMLElement, maxLines: number): void {
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while (container.children.length > maxLines) {
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container.removeChild(container.firstChild!)
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}
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}
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// =============================================================================
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// Main Component
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// =============================================================================
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export function ThinkingTerminalOptimized({
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className,
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maxHeight = '400px',
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apiUrl,
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maxLines = 500,
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}: ThinkingTerminalOptimizedProps) {
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const t = useTranslations('terminal')
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// DOM ref for direct manipulation (DOM Bypass)
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const terminalRef = useRef<HTMLDivElement>(null)
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const abortControllerRef = useRef<AbortController | null>(null)
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// Minimal state - only connection status
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const [status, setStatus] = useState<StreamStatus>('idle')
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const [error, setError] = useState<string | null>(null)
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const [lineCount, setLineCount] = useState(0)
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// ==========================================================================
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// DOM Bypass: Append content directly to DOM
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// ==========================================================================
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const appendLine = useCallback((line: StreamLine) => {
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if (!terminalRef.current) return
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const element = createLineElement(line)
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terminalRef.current.appendChild(element)
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// 強制限制最大行數，防止 DOM 過大
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enforceMaxLines(terminalRef.current, maxLines)
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// 自動捲動到底部
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terminalRef.current.scrollTop = terminalRef.current.scrollHeight
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// 更新行數 (這是唯一的 state 更新)
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setLineCount((prev) => Math.min(prev + 1, maxLines))
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}, [maxLines])
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const clearTerminal = useCallback(() => {
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if (!terminalRef.current) return
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terminalRef.current.innerHTML = ''
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setLineCount(0)
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}, [])
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// ==========================================================================
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// SSE Stream Handler
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// ==========================================================================
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const startStream = useCallback(async () => {
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// 中斷前一次連線
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abortControllerRef.current?.abort()
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const controller = new AbortController()
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abortControllerRef.current = controller
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setStatus('connecting')
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setError(null)
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clearTerminal()
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appendLine({ type: 'system', content: t('connecting') })
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try {
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const url = apiUrl || `${process.env.NEXT_PUBLIC_API_URL}/api/v1/agent/thinking`
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const response = await fetch(url, {
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signal: controller.signal,
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})
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if (!response.ok) {
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throw new Error(`HTTP ${response.status}: ${response.statusText}`)
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}
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setStatus('streaming')
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appendLine({ type: 'system', content: t('connected') })
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const reader = response.body?.getReader()
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if (!reader) {
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throw new Error('Cannot establish stream')
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}
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const decoder = new TextDecoder()
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let buffer = ''
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// eslint-disable-next-line no-constant-condition
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while (true) {
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const { done, value } = await reader.read()
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if (done) break
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buffer += decoder.decode(value, { stream: true })
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// SSE: 事件以 \n\n 分隔
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const events = buffer.split('\n\n')
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buffer = events.pop() || ''
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for (const event of events) {
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if (event.startsWith('data: ')) {
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const data = event.slice(6).trim()
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if (data === '[DONE]') {
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appendLine({ type: 'system', content: t('streamComplete') })
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setStatus('idle')
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return
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}
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try {
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const parsed = JSON.parse(data) as { type: string; content: string }
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// DOM Bypass: 直接 append 到 DOM
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appendLine({
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type: parsed.type as StreamLine['type'],
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content: parsed.content,
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})
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} catch {
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// 忽略解析錯誤的片段
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}
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}
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}
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}
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setStatus('idle')
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} catch (err: unknown) {
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if (err instanceof Error && err.name === 'AbortError') {
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appendLine({ type: 'system', content: t('streamAborted') })
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setStatus('idle')
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} else {
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const message = err instanceof Error ? err.message : 'Unknown error'
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setError(message)
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setStatus('error')
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appendLine({ type: 'error', content: message })
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}
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}
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}, [apiUrl, appendLine, clearTerminal, t])
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const stopStream = useCallback(() => {
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abortControllerRef.current?.abort()
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setStatus('idle')
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}, [])
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// Cleanup on unmount
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useEffect(() => {
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return () => {
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abortControllerRef.current?.abort()
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}
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}, [])
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// ==========================================================================
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// Render
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// ==========================================================================
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const isStreaming = status === 'streaming' || status === 'connecting'
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return (
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<div className={cn('glass-panel p-6 w-full space-y-4', className)}>
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{/* Header */}
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<div className="flex items-center justify-between border-b border-nothing-gray-800 pb-4">
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<div className="flex items-center gap-3">
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{/* Terminal dots */}
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<div className="flex gap-1">
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<div className={cn(
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'w-3 h-3 rounded-full',
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status === 'error' ? 'bg-status-critical' : 'bg-status-critical/50'
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)} />
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<div className={cn(
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'w-3 h-3 rounded-full',
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isStreaming ? 'bg-status-thinking animate-pulse' : 'bg-status-thinking/50'
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)} />
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<div className={cn(
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'w-3 h-3 rounded-full',
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status === 'idle' && lineCount > 0 ? 'bg-status-healthy' : 'bg-status-healthy/50'
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)} />
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</div>
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<h2 className="font-display text-display-sm">{t('title')}</h2>
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</div>
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<span className="font-body text-xs text-nothing-gray-500">
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v1.0 | DOM Bypass | {lineCount} lines
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</span>
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</div>
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{/* Control Buttons */}
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<div className="flex gap-2">
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<button
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onClick={startStream}
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disabled={isStreaming}
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className={cn(
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'flex-1 py-3 px-4 rounded-button font-body text-sm transition-all border',
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isStreaming
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? 'bg-nothing-gray-800 text-nothing-gray-500 border-nothing-gray-700 cursor-not-allowed'
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: 'bg-nothing-white text-nothing-black border-transparent hover:bg-nothing-gray-200'
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)}
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>
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{isStreaming ? t('executing') : t('initiate')}
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</button>
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{isStreaming && (
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<button
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onClick={stopStream}
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className="py-3 px-4 rounded-button font-body text-sm bg-status-critical/20 text-status-critical border border-status-critical/50 hover:bg-status-critical/30"
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>
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{t('stop')}
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</button>
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)}
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<button
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onClick={clearTerminal}
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disabled={isStreaming || lineCount === 0}
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className={cn(
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'py-3 px-4 rounded-button font-body text-sm border',
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isStreaming || lineCount === 0
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? 'bg-nothing-gray-800 text-nothing-gray-500 border-nothing-gray-700 cursor-not-allowed'
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: 'bg-nothing-gray-800 text-nothing-gray-300 border-nothing-gray-700 hover:bg-nothing-gray-700'
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)}
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>
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{t('clear')}
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</button>
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</div>
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{/* Terminal Output - DOM Bypass Container */}
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<div
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ref={terminalRef}
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className="bg-nothing-gray-900 rounded-card p-4 overflow-y-auto font-body text-sm"
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style={{ maxHeight, minHeight: '150px' }}
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>
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{/* Content appended directly via DOM manipulation */}
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{lineCount === 0 && !isStreaming && (
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<div className="text-nothing-gray-600">
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{t('waiting')}
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</div>
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)}
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</div>
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{/* Cursor Animation (streaming indicator) */}
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{isStreaming && (
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<div className="flex items-center gap-1 -mt-2 px-4">
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<span className="text-nothing-gray-500">{'>'}</span>
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<span className="w-2 h-4 bg-nothing-white animate-pulse" />
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</div>
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)}
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{/* Error Display */}
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{error && (
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<div className="p-3 bg-status-critical/10 border border-status-critical/30 rounded text-sm text-status-critical">
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{error}
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</div>
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)}
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{/* Footer */}
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<div className="flex items-center justify-between pt-2 border-t border-nothing-gray-800">
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<p className="font-body text-xs text-nothing-gray-600">
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{t('stream')}
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</p>
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<p className="font-body text-xs text-nothing-gray-600">
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{status === 'streaming' ? (
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<span className="text-status-thinking animate-pulse">● LIVE</span>
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) : (
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t('events', { count: lineCount })
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)}
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</p>
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</div>
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</div>
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)
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}
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export default ThinkingTerminalOptimized
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