feat: 完善全栈 Dashboard 项目 - UI优化、Docker支持、账单系统等

server/utils/font.ts

@@ -0,0 +1,66 @@
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const FONTS_DIR = path.join(__dirname, '..', 'fonts')
+const FONT_FILE = path.join(FONTS_DIR, 'NotoSansSC-Regular.otf')
+
+const CDN_URLS = [
+  'https://cdn.jsdelivr.net/gh/googlefonts/noto-cjk@main/Sans/SubsetOTF/SC/NotoSansSC-Regular.otf',
+  'https://raw.githubusercontent.com/googlefonts/noto-cjk/main/Sans/SubsetOTF/SC/NotoSansSC-Regular.otf',
+]
+
+let fontReady: string | null = null
+
+export async function ensureChineseFont(): Promise<string> {
+  if (fontReady) return fontReady
+
+  // Check if already downloaded
+  if (fs.existsSync(FONT_FILE) && fs.statSync(FONT_FILE).size > 100000) {
+    fontReady = FONT_FILE
+    return FONT_FILE
+  }
+
+  // Ensure directory exists
+  if (!fs.existsSync(FONTS_DIR)) fs.mkdirSync(FONTS_DIR, { recursive: true })
+
+  // Try each CDN URL
+  for (const url of CDN_URLS) {
+    try {
+      console.log(`Downloading Chinese font from ${url.split('/')[2]}...`)
+      const res = await fetch(url, { signal: AbortSignal.timeout(60000) })
+      if (!res.ok) continue
+      const buf = Buffer.from(await res.arrayBuffer())
+      if (buf.length < 100000) continue // too small, probably error page
+      fs.writeFileSync(FONT_FILE, buf)
+      console.log(`Chinese font downloaded (${(buf.length / 1024 / 1024).toFixed(1)} MB)`)
+      fontReady = FONT_FILE
+      return FONT_FILE
+    } catch (e: any) {
+      console.warn(`Font download failed from ${url.split('/')[2]}: ${e.message}`)
+    }
+  }
+
+  // Fallback: try local system fonts
+  const fallbacks = [
+    'C:\\Windows\\Fonts\\simhei.ttf',
+    'C:\\Windows\\Fonts\\msyh.ttf',
+    '/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc',
+    '/System/Library/Fonts/PingFang.ttc',
+  ]
+  for (const f of fallbacks) {
+    if (fs.existsSync(f)) {
+      console.log(`Using fallback system font: ${f}`)
+      fontReady = f
+      return f
+    }
+  }
+
+  throw new Error('No Chinese font available. Set PDF_FONT_PATH env variable to a TTF/OTF font path.')
+}
+
+export function getChineseFont(): string {
+  if (!fontReady) throw new Error('Font not initialized. Call ensureChineseFont() first.')
+  return fontReady
+}