update at 2026-02-08 18:28:39

miniprogram/utils/mp/render-api.js

@@ -0,0 +1,67 @@
+const { request } = require('./wx-promisify')
+
+function buildApiUrl() {
+  const app = getApp()
+  const apiUrl = app && app.globalData ? app.globalData.svgRenderApiUrl : ''
+  if (!apiUrl) {
+    throw new Error('未配置渲染 API 地址')
+  }
+  return apiUrl
+}
+
+function normalizeResult(data) {
+  if (!data || typeof data !== 'object') {
+    throw new Error('渲染服务返回格式无效')
+  }
+
+  if (typeof data.svg !== 'string' || !data.svg.trim()) {
+    throw new Error('渲染服务未返回有效 SVG')
+  }
+
+  return {
+    svg: data.svg,
+    width: Number(data.width) || 0,
+    height: Number(data.height) || 0,
+    fontName: data.fontName || 'Unknown',
+    fontId: data.fontId || '',
+  }
+}
+
+async function renderSvgByApi(payload) {
+  const app = getApp()
+  const timeout = app && app.globalData && app.globalData.apiTimeoutMs
+    ? Number(app.globalData.apiTimeoutMs)
+    : 30000
+
+  const response = await request({
+    url: buildApiUrl(),
+    method: 'POST',
+    timeout,
+    header: {
+      'content-type': 'application/json',
+    },
+    data: {
+      fontId: payload.fontId,
+      text: payload.text,
+      fontSize: payload.fontSize,
+      fillColor: payload.fillColor,
+      letterSpacing: payload.letterSpacing,
+      maxCharsPerLine: payload.maxCharsPerLine,
+    },
+  })
+
+  if (!response || response.statusCode < 200 || response.statusCode >= 300) {
+    throw new Error(`渲染服务请求失败，状态码: ${response && response.statusCode}`)
+  }
+
+  const body = response.data || {}
+  if (!body.ok) {
+    throw new Error(body.error || '渲染服务返回错误')
+  }
+
+  return normalizeResult(body.data)
+}
+
+module.exports = {
+  renderSvgByApi,
+}