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# Implementation Plan: 素材管理库 (Media Library)
**Branch**: `009-media-library` | **Date**: 2025-12-11 | **Spec**: [spec.md](./spec.md)
**Input**: Feature specification from `/specs/009-media-library/spec.md`
**Note**: This template is filled in by the `/speckit.plan` command. See `.specify/templates/commands/plan.md` for the execution workflow.
## Summary
实现一个素材管理库功能允许用户通过AI生成对话框访问、浏览、管理和选择媒体素材图片和视频。素材库使用IndexedDB进行本地持久化存储支持按类型和来源筛选、搜索、排序以及重命名、删除和下载操作。AI生成的内容将自动添加到素材库中用户可以从素材库中选择已有素材作为参考图无需每次都从本地文件系统选择。
## Technical Context
**Language/Version**: TypeScript 5.x (strict mode), React 18.x
**Primary Dependencies**:
- TDesign React (UI components, light theme)
- Plait Framework (existing whiteboard core)
- localforage (IndexedDB wrapper for storage)
- RxJS (reactive state management)
- Vite (build tool)
**Storage**: IndexedDB (via localforage) for:
- Asset metadata and Blob URLs
- Asset data persistence across browser sessions
- Storage quota monitoring
**Testing**:
- React Testing Library (component tests)
- Jest (unit tests)
- Playwright (E2E tests for key flows)
**Target Platform**: Modern web browsers (Chrome, Firefox, Safari, Edge latest versions) supporting IndexedDB and Blob URLs
**Project Type**: Monorepo web application (Nx workspace)
**Performance Goals**:
- Initial load time < 2 seconds (for 100 assets)
- Filter/search response < 500ms
- Support至少 100 assets without degrading UI responsiveness
**Constraints**:
- No backend - pure frontend solution
- Browser storage limits (50MB-500MB depending on browser)
- Single file size limit: 500 lines (per constitution)
- Access only through AI generation dialogs (no standalone entry point)
**Scale/Scope**:
- ~5-8 React components (modal, sidebar, grid, inspector, upload)
- 1 Context provider for asset state management
- 1 IndexedDB storage service
- Integration with 2 existing AI generation dialogs (image, video)
- Integration with existing task queue service for auto-save
## Constitution Check
*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*
### ✅ PASS: Plugin Architecture
- **Requirement**: 每个功能都应该实现为遵循 `withXxx` 模式的可组合插件
- **Status**: ✅ PASS - 素材管理库不是编辑器插件而是UI功能模块使用React Context模式进行状态管理。不违反插件架构原则。
### ✅ PASS: File Size Constraint (500 lines)
- **Requirement**: 单个文件不得超过 500 行(硬性约束)
- **Status**: ✅ PASS - 计划将组件分解为多个小文件:
- MediaLibraryModal.tsx (主容器 < 150 lines)
- MediaLibraryGrid.tsx (网格视图 < 200 lines)
- MediaLibrarySidebar.tsx (筛选侧边栏 < 150 lines)
- MediaLibraryInspector.tsx (详情面板 < 200 lines)
- AssetContext.tsx (状态管理 < 150 lines)
- asset-storage-service.ts (存储服务 < 250 lines)
- 各种小型组件和工具函数
### ✅ PASS: TypeScript Strict Mode
- **Requirement**: TypeScript 严格模式是强制性的
- **Status**: ✅ PASS - 所有新代码将使用 TypeScript 5.x strict mode定义完整的接口和类型
### ✅ PASS: TDesign React & Light Theme
- **Requirement**: 所有 UI 组件必须使用 TDesign React 并采用 light 主题
- **Status**: ✅ PASS - 将使用TDesign组件Dialog, Button, Input, Tooltip并配置light主题
### ✅ PASS: Performance Optimization
- **Requirement**: 为用户体验进行优化React.memo, useCallback, useMemo
- **Status**: ✅ PASS - 将应用优化策略:
- 网格项组件使用 React.memo
- 事件处理器使用 useCallback
- 筛选后的素材列表使用 useMemo
- 考虑虚拟化(如果资产数量增长)
### ✅ PASS: Security & Validation
- **Requirement**: 验证和清理所有用户输入,文件上传验证
- **Status**: ✅ PASS - 将实现:
- 文件类型验证(仅图片和视频)
- MIME类型检查
- 存储错误处理
- 无硬编码敏感信息
### ✅ PASS: Monorepo Structure
- **Requirement**: 在 Nx monorepo 中保持清晰的分离
- **Status**: ✅ PASS - 新代码将放置在 `packages/drawnix/src/` 下:
- `components/media-library/` - UI组件
- `services/asset-storage-service.ts` - 存储服务
- `types/asset.types.ts` - 类型定义
- `hooks/useAssets.ts` - 自定义hook
### ✅ PASS: Naming Conventions
- **Requirement**: 严格的文件和代码命名约定
- **Status**: ✅ PASS - 将遵循:
- 组件PascalCase.tsx
- HookscamelCase.ts (useAssets.ts)
- 服务kebab-case.ts (asset-storage-service.ts)
- 类型kebab-case.types.ts (asset.types.ts)
### ✅ PASS: Component Structure
- **Requirement**: React组件遵循标准结构顺序
- **Status**: ✅ PASS - 所有组件将遵循:导入 → 类型 → 常量 → Hooks → 事件处理器 → 渲染
### ✅ PASS: Testing Requirements
- **Requirement**: 单元测试、组件测试、集成测试、E2E测试
- **Status**: ✅ PASS - 测试计划:
- 单元测试asset-storage-service.ts
- 组件测试所有React组件
- 集成测试与AI生成对话框的集成
- E2E测试完整的选择和上传流程
### ✅ PASS: CSS/SCSS Standards
- **Requirement**: 遵循 BEM 方法论
- **Status**: ✅ PASS - 将使用BEM命名CSS变量优先
### ✅ PASS: Git Commit Convention
- **Requirement**: 遵循 Conventional Commits
- **Status**: ✅ PASS - 提交格式:`feat(media-library): <description>`
**GATE RESULT: ✅ ALL GATES PASSED - Proceed to Phase 0**
## Project Structure
### Documentation (this feature)
```text
specs/009-media-library/
├── spec.md # Feature specification
├── plan.md # This file (/speckit.plan command output)
├── research.md # Phase 0 output (技术决策和最佳实践)
├── data-model.md # Phase 1 output (数据模型定义)
├── quickstart.md # Phase 1 output (快速开始指南)
├── contracts/ # Phase 1 output (接口契约)
│ └── asset-store-api.md
└── tasks.md # Phase 2 output (/speckit.tasks command - NOT YET CREATED)
```
### Source Code (repository root)
```text
packages/drawnix/src/
├── components/
│ └── media-library/
│ ├── MediaLibraryModal.tsx # 主弹窗容器组件
│ ├── MediaLibraryModal.scss # 弹窗样式
│ ├── MediaLibraryGrid.tsx # 网格视图组件
│ ├── MediaLibraryGrid.scss # 网格样式
│ ├── MediaLibrarySidebar.tsx # 左侧筛选侧边栏
│ ├── MediaLibrarySidebar.scss # 侧边栏样式
│ ├── MediaLibraryInspector.tsx # 右侧详情面板
│ ├── MediaLibraryInspector.scss # 详情面板样式
│ ├── MediaLibraryEmpty.tsx # 空状态组件
│ ├── MediaLibraryStorageBar.tsx # 存储空间进度条
│ ├── AssetGridItem.tsx # 单个素材网格项
│ ├── AssetGridItem.scss # 网格项样式
│ └── index.ts # 导出
├── contexts/
│ └── AssetContext.tsx # 素材状态管理Context
├── services/
│ ├── asset-storage-service.ts # IndexedDB存储服务
│ └── asset-integration-service.ts # 与AI生成服务集成
├── hooks/
│ ├── useAssets.ts # 素材管理hook
│ └── useAssetSelection.ts # 素材选择hook
├── types/
│ └── asset.types.ts # 素材相关类型定义
├── utils/
│ ├── asset-utils.ts # 素材工具函数
│ └── storage-quota.ts # 存储配额工具
└── constants/
└── ASSET_CONSTANTS.ts # 素材相关常量
packages/drawnix/src/components/ttd-dialog/
├── ai-image-generation.tsx # [MODIFY] 集成素材库选择
└── ai-video-generation.tsx # [MODIFY] 集成素材库选择
tests/
└── media-library/
├── unit/
│ ├── asset-storage-service.spec.ts
│ ├── asset-utils.spec.ts
│ └── storage-quota.spec.ts
├── component/
│ ├── MediaLibraryModal.spec.tsx
│ ├── MediaLibraryGrid.spec.tsx
│ └── AssetGridItem.spec.tsx
├── integration/
│ └── ai-generation-integration.spec.tsx
└── e2e/
├── asset-upload.spec.ts
└── asset-selection.spec.ts
```
**Structure Decision**: 使用 monorepo 中的 `packages/drawnix` 包,遵循现有项目结构,将素材管理库功能作为独立模块添加到 `components/media-library/` 目录下。使用Context模式进行状态管理与现有的服务层`services/`保持一致。组件将被分解为多个小文件以符合500行限制每个组件负责单一职责网格、侧边栏、详情面板等
## Complexity Tracking
> **No constitution violations - This section is empty**
所有宪章检查项均已通过,无需额外的复杂性理由说明。