454 lines
15 KiB
TypeScript
454 lines
15 KiB
TypeScript
"use client";
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import Link from "next/link";
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import { useEffect, useId, useRef, useState, type RefObject } from "react";
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import {
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BookOpen,
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ChevronDown,
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ClipboardCheck,
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FileText,
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Library,
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PanelLeft,
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PanelRight,
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PenLine,
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Square,
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} from "lucide-react";
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import { AppShell } from "@/components/AppShell";
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import { Drawer } from "@/components/Drawer";
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import { ThinkingIndicator } from "@/components/ThinkingIndicator";
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import { Button } from "@/components/ui/Button";
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import { SectionHeader } from "@/components/ui/SectionHeader";
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import { StatusNote } from "@/components/ui/StatusNote";
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import { TextArea } from "@/components/ui/TextArea";
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import type { ProjectResponse } from "@/lib/api/types";
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import { friendlyError } from "@/lib/errors/messages";
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import { useAutosave } from "@/lib/autosave/useAutosave";
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import { useDraftStream } from "@/lib/stream/useDraftStream";
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import {
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WORKBENCH_CHAPTER_NO,
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type ChapterEntry,
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} from "@/lib/workbench/chapter";
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import { composeDirective, STYLE_PRESETS } from "@/lib/workbench/directive";
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import { buttonClass } from "@/lib/ui/variants";
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import { ChapterList, ChapterListContent } from "./ChapterList";
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import { ChapterAssistant, AssistantContent } from "./ChapterAssistant";
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import { Editor } from "./Editor";
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interface WorkbenchProps {
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project: ProjectResponse;
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// 当前章号（来自写作路由 `?chapter=N`）；缺省回退第 1 章。
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chapterNo?: number;
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// RSC 种入的已存草稿正文（GET .../draft）；无草稿（404）→ ""（空编辑器）。
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initialText?: string;
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// 大纲章节目录（GET .../outline）；无大纲 → 空数组（目录回退到仅当前章 + 去大纲提示）。
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chapters?: ChapterEntry[];
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}
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// 移动端右栏（目录/助手）经抽屉触达；桌面用三栏栅格。
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type MobilePanel = "chapters" | "assistant" | null;
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// M1：单章工作台。章节列表为占位（无章节列表端点）；默认第 1 章。
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// WORKBENCH_CHAPTER_NO 移到 lib/workbench/chapter.ts（非客户端模块），供 Server Component 安全导入。
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export function Workbench({
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project,
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chapterNo = WORKBENCH_CHAPTER_NO,
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initialText = "",
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chapters = [],
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}: WorkbenchProps) {
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// 用已存草稿作初值；流式开始后由下方 effect 覆盖（流不会被初值反扑——
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// stream.state.text 起始为空，仅当 streaming/done/aborted 且变化才写回）。
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const [text, setText] = useState(initialText);
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const [mobilePanel, setMobilePanel] = useState<MobilePanel>(null);
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// 本章指令（T4-b）：自由文本 + 风格预设 → 写本章时组装传入 draft 生成。
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const [directive, setDirective] = useState("");
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const [presetIds, setPresetIds] = useState<string[]>([]);
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const autosave = useAutosave(project.id, chapterNo, initialText);
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const stream = useDraftStream();
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const lastStreamText = useRef("");
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const chapterTriggerRef = useRef<HTMLButtonElement>(null);
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const assistantTriggerRef = useRef<HTMLButtonElement>(null);
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// 流式 token 累积进编辑器（打字机）；停止/结束后已生成部分留在草稿。
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useEffect(() => {
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const streamed = stream.state.text;
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if (
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(stream.state.phase === "streaming" ||
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stream.state.phase === "done" ||
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stream.state.phase === "aborted") &&
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streamed !== lastStreamText.current
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) {
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lastStreamText.current = streamed;
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setText(streamed);
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autosave.onChange(streamed);
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}
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}, [stream.state.phase, stream.state.text, autosave]);
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const onWrite = (): void => {
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void stream.start(
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project.id,
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chapterNo,
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composeDirective(directive, presetIds),
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);
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};
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const togglePreset = (id: string): void => {
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setPresetIds((prev) =>
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prev.includes(id) ? prev.filter((x) => x !== id) : [...prev, id],
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);
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};
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const onEditorChange = (value: string): void => {
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setText(value);
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autosave.onChange(value);
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};
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// 字数统计非空白字符（与中文读者直觉一致：标点/空格不计入正文体量）。
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const wordCount = text.replace(/\s+/g, "").length;
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const closePanel = (): void => setMobilePanel(null);
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// 流式里程碑播报（仅终结句，非逐 token）：完成/停止/失败时写入 role=status 区。
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const liveMessage = ((): string => {
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switch (stream.state.phase) {
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case "done":
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return `本章生成完成，共 ${wordCount} 字`;
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case "aborted":
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return "已停止";
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case "error":
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return stream.state.error
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? friendlyError(stream.state.error.code, stream.state.error.message)
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.text
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: "本章生成失败，请稍后重试。";
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default:
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return "";
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}
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})();
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return (
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<AppShell
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title={`〈${project.title}〉`}
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subtitle={`第 ${chapterNo} 章`}
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projectId={project.id}
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activeNav="write"
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>
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<div className="grid min-h-[calc(100vh-var(--chrome,4rem))] grid-cols-1 xl:h-[calc(100vh-var(--chrome,4rem))] xl:grid-cols-[12rem_1fr_18rem]">
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<ChapterList
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projectId={project.id}
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chapters={chapters}
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currentChapterNo={chapterNo}
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/>
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<section className="flex min-w-0 flex-col bg-bg">
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<MobileContextBar
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chapterNo={chapterNo}
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onOpenChapters={() => setMobilePanel("chapters")}
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onOpenAssistant={() => setMobilePanel("assistant")}
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chapterTriggerRef={chapterTriggerRef}
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assistantTriggerRef={assistantTriggerRef}
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/>
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<DirectivePanel
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directive={directive}
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onDirectiveChange={setDirective}
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presetIds={presetIds}
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onTogglePreset={togglePreset}
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/>
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<div className="flex-1 overflow-auto px-6 py-8">
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<Editor
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value={text}
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onChange={onEditorChange}
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streaming={stream.isStreaming}
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/>
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</div>
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<Toolbar
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projectId={project.id}
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chapterNo={chapterNo}
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wordCount={wordCount}
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savedLabel={autosave.savedLabel}
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saveStatus={autosave.status}
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streaming={stream.isStreaming}
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streamError={stream.state.error}
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liveMessage={liveMessage}
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onWrite={onWrite}
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onStop={stream.stop}
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/>
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</section>
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<ChapterAssistant projectId={project.id} chapterNo={chapterNo} />
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</div>
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{/* 窄屏 / 中屏(1024–1280)：目录 / 本章助手经抽屉触达；≥xl 已在三栏栅格里直显。 */}
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<Drawer
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open={mobilePanel === "chapters"}
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onClose={closePanel}
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side="left"
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label="目录"
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triggerRef={chapterTriggerRef}
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>
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<ChapterListContent
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projectId={project.id}
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chapters={chapters}
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currentChapterNo={chapterNo}
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/>
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</Drawer>
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<Drawer
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open={mobilePanel === "assistant"}
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onClose={closePanel}
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side="right"
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label="本章助手"
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triggerRef={assistantTriggerRef}
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>
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<AssistantContent projectId={project.id} chapterNo={chapterNo} />
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</Drawer>
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</AppShell>
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);
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}
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interface MobileContextBarProps {
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chapterNo: number;
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onOpenChapters: () => void;
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onOpenAssistant: () => void;
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chapterTriggerRef: RefObject<HTMLButtonElement | null>;
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assistantTriggerRef: RefObject<HTMLButtonElement | null>;
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}
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function MobileContextBar({
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chapterNo,
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onOpenChapters,
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onOpenAssistant,
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chapterTriggerRef,
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assistantTriggerRef,
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}: MobileContextBarProps) {
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return (
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<div className="flex items-center justify-between gap-2 border-b border-line bg-panel px-4 py-2 xl:hidden">
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<Button
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ref={chapterTriggerRef}
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onClick={onOpenChapters}
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variant="secondary"
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size="sm"
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>
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<PanelLeft className="h-4 w-4" aria-hidden="true" />
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目录
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</Button>
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<span className="min-w-0 truncate font-mono text-xs text-ink-soft">
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第 {chapterNo} 章
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</span>
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<Button
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ref={assistantTriggerRef}
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onClick={onOpenAssistant}
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variant="secondary"
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size="sm"
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>
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<PanelRight className="h-4 w-4" aria-hidden="true" />
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助手
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</Button>
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</div>
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);
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}
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interface DirectivePanelProps {
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directive: string;
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onDirectiveChange: (value: string) => void;
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presetIds: readonly string[];
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onTogglePreset: (id: string) => void;
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}
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// 本章指令面板（T4-b）：可折叠的 textarea + 风格快捷预设 chips。
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// 默认折叠（不抢编辑视野）；指令覆盖/补充大纲节拍，写本章时组装传入生成。
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function DirectivePanel({
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directive,
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onDirectiveChange,
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presetIds,
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onTogglePreset,
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}: DirectivePanelProps) {
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const panelId = useId();
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const activeCount = presetIds.length + (directive.trim().length > 0 ? 1 : 0);
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return (
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<details className="group border-b border-line bg-panel px-4 py-3 sm:px-6">
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<summary
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className="flex cursor-pointer list-none items-center justify-between gap-3 text-sm text-ink-soft hover:text-cinnabar"
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aria-controls={panelId}
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>
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<span className="flex items-center gap-2 font-serif text-base text-ink">
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<ChevronDown
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className="h-4 w-4 text-ink-soft transition-transform group-open:rotate-180"
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aria-hidden="true"
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/>
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本章写作指令
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</span>
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<span className="rounded border border-line bg-bg px-2 py-0.5 text-xs text-ink-soft">
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{activeCount > 0 ? `${activeCount} 项指令` : "可选"}
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</span>
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</summary>
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<div id={panelId} className="mt-3 space-y-3">
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<SectionHeader
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title="写作指令"
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description="用于补充或覆盖本章大纲节拍，只影响本次生成。"
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/>
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<label className="block">
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<span className="sr-only">本章指令</span>
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<TextArea
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value={directive}
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onChange={(e) => onDirectiveChange(e.target.value)}
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rows={2}
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placeholder="本章想怎么写？（可选，覆盖/补充大纲节拍）"
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/>
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</label>
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<div className="flex flex-wrap gap-2" role="group" aria-label="风格预设">
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{STYLE_PRESETS.map((preset) => {
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const active = presetIds.includes(preset.id);
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return (
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<Button
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key={preset.id}
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type="button"
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aria-pressed={active}
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onClick={() => onTogglePreset(preset.id)}
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variant={active ? "outline" : "secondary"}
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size="sm"
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>
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{preset.label}
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</Button>
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);
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})}
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</div>
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{activeCount > 0 ? (
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<StatusNote variant="info">
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写本章时会把已选预设和自由指令合并进本次生成请求。
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</StatusNote>
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) : null}
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</div>
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</details>
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);
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}
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// 写章失败提示：友好文案（不暴露 raw code）+ 可选「去设置」动作（F4）。
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function StreamErrorNote({
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streamError,
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}: {
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streamError: { code: string; message: string };
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}) {
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const friendly = friendlyError(streamError.code, streamError.message);
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return (
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<p className="mb-2 text-sm text-conflict">
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{friendly.text}
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{friendly.actionHref ? (
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<>
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{" "}
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<Link
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href={friendly.actionHref}
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className="underline hover:text-cinnabar"
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>
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{friendly.actionLabel}
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</Link>
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</>
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) : null}
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</p>
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);
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}
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interface ToolbarProps {
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projectId: string;
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chapterNo: number;
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wordCount: number;
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savedLabel: string | null;
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saveStatus: ReturnType<typeof useAutosave>["status"];
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streaming: boolean;
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streamError: { code: string; message: string } | null;
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// 流式里程碑播报句（完成/停止/失败）；仅在 role=status 区出现，不逐 token 刷新。
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liveMessage: string;
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onWrite: () => void;
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onStop: () => void;
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}
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function Toolbar({
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projectId,
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chapterNo,
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wordCount,
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savedLabel,
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saveStatus,
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streaming,
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streamError,
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liveMessage,
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onWrite,
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onStop,
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}: ToolbarProps) {
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return (
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<div className="sticky bottom-0 z-10 border-t border-line bg-panel/95 px-4 py-2 backdrop-blur sm:px-6 sm:py-3">
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{streamError ? <StreamErrorNote streamError={streamError} /> : null}
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<div className="grid gap-2 sm:flex sm:flex-wrap sm:items-center sm:gap-3">
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<div className="flex min-w-0 flex-wrap items-center gap-2">
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{streaming ? (
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<Button onClick={onStop} variant="danger" size="sm">
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<Square className="h-4 w-4" aria-hidden="true" />
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停
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</Button>
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) : (
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<Button onClick={onWrite} variant="primary" size="sm">
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<PenLine className="h-4 w-4" aria-hidden="true" />
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写本章
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</Button>
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)}
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{streaming ? (
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// ThinkingIndicator 自带 role=status，开始时播报一次「生成中」；
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// 易变字数 aria-hidden，仅供视觉，不逐 token 打扰屏读。
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<span className="inline-flex items-center gap-2">
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<ThinkingIndicator label="生成中" className="text-xs text-cinnabar" />
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<span
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aria-hidden="true"
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className="font-mono text-xs text-cinnabar"
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>
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{wordCount} 字
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</span>
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</span>
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) : (
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<span className="font-mono text-xs text-ink-soft">
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字数 {wordCount}
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</span>
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)}
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{/* 终结句播报区：完成/停止/失败时写入，屏读只播报里程碑。 */}
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<span className="sr-only" role="status" aria-live="polite">
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{liveMessage}
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</span>
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<Link
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href={`/projects/${projectId}/outline`}
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className={buttonClass({ variant: "secondary", size: "sm" })}
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>
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<BookOpen className="h-4 w-4" aria-hidden="true" />
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大纲
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</Link>
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<Link
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href={`/projects/${projectId}/foreshadow`}
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className={buttonClass({
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variant: "secondary",
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size: "sm",
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className: "hidden sm:inline-flex",
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})}
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>
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<Library className="h-4 w-4" aria-hidden="true" />
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伏笔
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</Link>
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<Link
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href={`/projects/${projectId}/review?chapter=${chapterNo}`}
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className={buttonClass({ variant: "outline", size: "sm" })}
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>
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<ClipboardCheck className="h-4 w-4" aria-hidden="true" />
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审稿
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</Link>
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</div>
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<span
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role="status"
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aria-live="polite"
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className="min-w-0 font-mono text-xs text-ink-soft sm:ml-auto"
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>
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<FileText className="mr-1 inline h-3.5 w-3.5" aria-hidden="true" />
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{saveStatus === "saving"
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? "保存中…"
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: saveStatus === "error"
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? "保存失败"
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: (savedLabel ?? "尚未保存")}
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</span>
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</div>
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</div>
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);
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}
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