414 lines
12 KiB
JavaScript
414 lines
12 KiB
JavaScript
const fs = require('fs').promises
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const path = require('path')
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const { promisify } = require('util')
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const { exec } = require('child_process')
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const execAsync = promisify(exec)
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class RepositoryService {
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constructor() {
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this.baseDir = process.env.DOWNLOAD_DIR || path.join(process.cwd(), 'downloads')
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this.configFile = path.join(this.baseDir, '.repository-config.json')
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}
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// 初始化仓库
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async initialize() {
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try {
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await fs.mkdir(this.baseDir, { recursive: true })
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await this.loadConfig()
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return { success: true, message: '仓库初始化成功' }
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} catch (error) {
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throw new Error(`仓库初始化失败: ${error.message}`)
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}
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}
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// 加载配置
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async loadConfig() {
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try {
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const configData = await fs.readFile(this.configFile, 'utf8')
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this.config = JSON.parse(configData)
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} catch (error) {
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// 如果配置文件不存在，创建默认配置
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this.config = {
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downloadDir: this.baseDir,
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autoMigration: false,
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migrationRules: [],
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fileStructure: 'artist/artwork', // artist/artwork, artwork, flat
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namingPattern: '{artist_name}/{artwork_id}_{title}',
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maxFileSize: 0, // 0表示无限制
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allowedExtensions: ['.jpg', '.png', '.gif', '.webp']
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}
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await this.saveConfig()
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}
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}
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// 保存配置
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async saveConfig() {
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try {
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await fs.writeFile(this.configFile, JSON.stringify(this.config, null, 2))
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} catch (error) {
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throw new Error(`保存配置失败: ${error.message}`)
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}
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}
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// 获取仓库配置
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async getConfig() {
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await this.loadConfig()
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return this.config
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}
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// 更新仓库配置
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async updateConfig(newConfig) {
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this.config = { ...this.config, ...newConfig }
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await this.saveConfig()
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return { success: true, message: '配置更新成功' }
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}
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// 获取仓库统计信息
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async getStats() {
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try {
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const stats = await this.scanRepository()
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return {
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totalArtworks: stats.artworks.length,
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totalArtists: stats.artists.length,
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totalSize: stats.totalSize,
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diskUsage: await this.getDiskUsage(),
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lastScan: new Date().toISOString()
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}
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} catch (error) {
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throw new Error(`获取统计信息失败: ${error.message}`)
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}
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}
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// 扫描仓库
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async scanRepository() {
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const artworks = []
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const artists = new Set()
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let totalSize = 0
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try {
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// 确保配置已加载
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await this.loadConfig()
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// 扫描作者目录
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const artistEntries = await fs.readdir(this.baseDir, { withFileTypes: true })
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for (const artistEntry of artistEntries) {
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if (!artistEntry.isDirectory()) continue
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// 跳过配置文件和隐藏文件
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if (artistEntry.name.startsWith('.') || artistEntry.name === '.repository-config.json') {
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continue
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}
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const artistName = artistEntry.name
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const artistPath = path.join(this.baseDir, artistName)
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// 扫描作者下的作品目录
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const artworkEntries = await fs.readdir(artistPath, { withFileTypes: true })
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for (const artworkEntry of artworkEntries) {
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if (!artworkEntry.isDirectory()) continue
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const fullPath = path.join(artistPath, artworkEntry.name)
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// 检查是否是作品目录（包含数字ID）
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const artworkMatch = artworkEntry.name.match(/^(\d+)_(.+)$/)
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if (artworkMatch) {
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const artworkId = artworkMatch[1]
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const title = artworkMatch[2]
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// 扫描作品文件
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const files = await this.scanArtworkFiles(fullPath)
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if (files.length > 0) {
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artworks.push({
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id: artworkId,
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title: title,
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artist: artistName,
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artistPath: artistPath,
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path: fullPath,
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files: files,
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size: files.reduce((sum, file) => sum + file.size, 0),
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createdAt: await this.getFileCreationTime(fullPath)
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})
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artists.add(artistName)
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totalSize += files.reduce((sum, file) => sum + file.size, 0)
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}
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}
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}
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}
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return {
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artworks,
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artists: Array.from(artists),
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totalSize
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}
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} catch (error) {
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throw new Error(`扫描仓库失败: ${error.message}`)
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}
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}
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// 扫描作品文件
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async scanArtworkFiles(artworkPath) {
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try {
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// 确保配置已加载
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await this.loadConfig()
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const files = []
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const entries = await fs.readdir(artworkPath, { withFileTypes: true })
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for (const entry of entries) {
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if (entry.isFile()) {
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const filePath = path.join(artworkPath, entry.name)
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const ext = path.extname(entry.name).toLowerCase()
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if (this.config.allowedExtensions.includes(ext)) {
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const stats = await fs.stat(filePath)
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files.push({
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name: entry.name,
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path: path.relative(this.baseDir, filePath),
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size: stats.size,
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extension: ext,
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modifiedAt: stats.mtime
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})
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}
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}
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}
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return files
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} catch (error) {
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return []
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}
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}
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// 获取文件创建时间
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async getFileCreationTime(filePath) {
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try {
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const stats = await fs.stat(filePath)
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return stats.birthtime
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} catch (error) {
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return new Date()
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}
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}
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// 获取磁盘使用情况
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async getDiskUsage() {
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try {
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const stats = await fs.statfs(this.baseDir)
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const total = stats.blocks * stats.bsize
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const free = stats.bavail * stats.bsize
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const used = total - free
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return {
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total,
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used,
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free,
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usagePercent: Math.round((used / total) * 100)
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}
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} catch (error) {
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return { total: 0, used: 0, free: 0, usagePercent: 0 }
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}
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}
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// 按作者浏览作品
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async getArtworksByArtist(artistName, offset = 0, limit = 20) {
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try {
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const stats = await this.scanRepository()
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const artistArtworks = stats.artworks.filter(artwork =>
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artwork.artist === artistName
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)
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return {
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artworks: artistArtworks.slice(offset, offset + limit),
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total: artistArtworks.length,
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offset,
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limit
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}
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} catch (error) {
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throw new Error(`获取作者作品失败: ${error.message}`)
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}
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}
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// 按作品ID查找
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async findArtworkById(artworkId) {
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try {
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const stats = await this.scanRepository()
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return stats.artworks.find(artwork => artwork.id === artworkId)
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} catch (error) {
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throw new Error(`查找作品失败: ${error.message}`)
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}
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}
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// 搜索作品
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async searchArtworks(query, offset = 0, limit = 20) {
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try {
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const stats = await this.scanRepository()
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const filtered = stats.artworks.filter(artwork =>
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artwork.title.toLowerCase().includes(query.toLowerCase()) ||
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artwork.artist.toLowerCase().includes(query.toLowerCase()) ||
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artwork.id.includes(query)
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)
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return {
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artworks: filtered.slice(offset, offset + limit),
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total: filtered.length,
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offset,
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limit
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}
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} catch (error) {
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throw new Error(`搜索作品失败: ${error.message}`)
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}
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}
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// 获取所有作者列表
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async getArtists(offset = 0, limit = 50) {
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try {
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const stats = await this.scanRepository()
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const artists = stats.artists.slice(offset, offset + limit)
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// 获取每个作者的统计信息
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const artistsWithStats = artists.map(artistName => {
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const artistArtworks = stats.artworks.filter(artwork => artwork.artist === artistName)
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const totalSize = artistArtworks.reduce((sum, artwork) => sum + artwork.size, 0)
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return {
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name: artistName,
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artworkCount: artistArtworks.length,
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totalSize,
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lastUpdated: artistArtworks.length > 0
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? Math.max(...artistArtworks.map(a => new Date(a.createdAt).getTime()))
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: null
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}
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})
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return {
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artists: artistsWithStats,
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total: stats.artists.length,
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offset,
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limit
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}
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} catch (error) {
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throw new Error(`获取作者列表失败: ${error.message}`)
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}
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}
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// 自动迁移旧项目
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async migrateOldProjects(sourceDir) {
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try {
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const migrationLog = []
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// 扫描源目录
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const scanSource = async (dirPath, relativePath = '') => {
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const entries = await fs.readdir(dirPath, { withFileTypes: true })
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for (const entry of entries) {
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const fullPath = path.join(dirPath, entry.name)
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const newRelativePath = path.join(relativePath, entry.name)
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if (entry.isDirectory()) {
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// 检查是否是作品目录
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const artworkMatch = entry.name.match(/^(\d+)_(.+)$/)
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if (artworkMatch) {
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const artworkId = artworkMatch[1]
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const title = artworkMatch[2]
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// 检查是否已存在
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const existingArtwork = await this.findArtworkById(artworkId)
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if (!existingArtwork) {
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// 迁移作品
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const targetPath = path.join(this.baseDir, newRelativePath)
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await fs.mkdir(path.dirname(targetPath), { recursive: true })
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await this.copyDirectory(fullPath, targetPath)
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migrationLog.push({
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type: 'artwork',
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id: artworkId,
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title: title,
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source: fullPath,
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target: targetPath,
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status: 'success'
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})
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} else {
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migrationLog.push({
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type: 'artwork',
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id: artworkId,
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title: title,
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source: fullPath,
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status: 'skipped',
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reason: '已存在'
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})
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}
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} else {
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// 递归扫描子目录
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await scanSource(fullPath, newRelativePath)
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}
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}
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}
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}
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await scanSource(sourceDir)
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return {
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success: true,
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message: '迁移完成',
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log: migrationLog,
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totalMigrated: migrationLog.filter(item => item.status === 'success').length
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}
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} catch (error) {
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throw new Error(`迁移失败: ${error.message}`)
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}
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}
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// 复制目录
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async copyDirectory(source, target) {
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try {
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await fs.mkdir(target, { recursive: true })
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const entries = await fs.readdir(source, { withFileTypes: true })
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for (const entry of entries) {
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const sourcePath = path.join(source, entry.name)
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const targetPath = path.join(target, entry.name)
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if (entry.isDirectory()) {
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await this.copyDirectory(sourcePath, targetPath)
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} else {
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await fs.copyFile(sourcePath, targetPath)
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}
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}
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} catch (error) {
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throw new Error(`复制目录失败: ${error.message}`)
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}
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}
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// 删除作品
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async deleteArtwork(artworkId) {
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try {
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const artwork = await this.findArtworkById(artworkId)
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if (!artwork) {
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throw new Error('作品不存在')
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}
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await fs.rm(artwork.path, { recursive: true, force: true })
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// 检查作者目录是否为空，如果为空则删除
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const artistDir = artwork.artistPath
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const artistArtworks = await this.getArtworksByArtist(artwork.artist)
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if (artistArtworks.artworks.length === 0) {
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await fs.rmdir(artistDir)
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}
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return { success: true, message: '作品删除成功' }
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} catch (error) {
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throw new Error(`删除作品失败: ${error.message}`)
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}
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}
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// 获取文件预览URL
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async getFilePreviewUrl(filePath) {
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// 这里可以返回一个代理URL，用于前端预览
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const relativePath = path.relative(this.baseDir, filePath)
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return `/api/repository/preview?path=${encodeURIComponent(relativePath)}`
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}
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}
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module.exports = RepositoryService
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