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miniprogram/utils/upload.js

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+/**
+ * 小程序拍照凭证上传（OpenSpec 基线）
+ * chooseImage → uni.uploadFile → 收集 URL → 业务接口再传 imageUrls
+ */
+import { API_BASE, TOKEN_KEY, UPLOAD_API } from '@/config/api'
+
+function parseUploadBody(raw) {
+  try {
+    return JSON.parse(typeof raw === 'string' ? raw : String(raw || ''))
+  } catch {
+    return {}
+  }
+}
+
+function extractUrl(body) {
+  const data = body && body.data
+  if (!data || typeof data !== 'object') return ''
+  const url = data.url || data.fileUrl || data.file_url
+  return url != null ? String(url).trim() : ''
+}
+
+function getToken() {
+  const raw = uni.getStorageSync(TOKEN_KEY)
+  return typeof raw === 'string' ? raw.trim() : raw ? String(raw).trim() : ''
+}
+
+/**
+ * @param {{ folder?: string, maxCount?: number, currentUrls?: string[], uploadUrl?: string }} opts
+ * @returns {Promise<string[]>} 本次新上传成功的 URL 列表
+ */
+export async function chooseAndUploadImages(opts = {}) {
+  const folder = opts.folder || 'mini-evidence'
+  const maxCount = opts.maxCount != null ? opts.maxCount : 6
+  const currentUrls = Array.isArray(opts.currentUrls) ? opts.currentUrls : []
+  const uploadUrl = opts.uploadUrl || `${API_BASE}${UPLOAD_API.IMAGE}`
+  const remain = maxCount - currentUrls.length
+
+  if (remain <= 0) {
+    uni.showToast({ title: `最多上传${maxCount}张`, icon: 'none' })
+    return []
+  }
+
+  const choose = await new Promise((resolve) => {
+    uni.chooseImage({
+      count: remain,
+      sizeType: ['compressed'],
+      sourceType: ['album', 'camera'],
+      success: (res) => resolve(res),
+      fail: () => resolve(null)
+    })
+  })
+  if (!choose?.tempFilePaths?.length) return []
+
+  const token = getToken()
+  const urls = []
+  uni.showLoading({ title: '上传中...' })
+  try {
+    for (const filePath of choose.tempFilePaths) {
+      const uploadRes = await new Promise((ok, fail) => {
+        uni.uploadFile({
+          url: uploadUrl,
+          filePath,
+          name: 'file',
+          header: {
+            Authorization: token ? `Bearer ${token}` : ''
+          },
+          formData: { folder },
+          success: ok,
+          fail
+        })
+      })
+      if (uploadRes.statusCode === 401) {
+        uni.showToast({ title: '登录已失效，请重新登录', icon: 'none' })
+        break
+      }
+      const body = parseUploadBody(uploadRes.data)
+      const url = extractUrl(body)
+      if (body.code !== 200 || !url) {
+        uni.showToast({ title: body.message || '上传失败', icon: 'none' })
+        break
+      }
+      urls.push(url)
+    }
+  } catch (e) {
+    uni.showToast({
+      title: e instanceof Error ? e.message : '上传失败',
+      icon: 'none'
+    })
+  } finally {
+    uni.hideLoading()
+  }
+  return urls
+}
+
+export function previewImages(urls, current) {
+  const list = (urls || []).map((u) => String(u || '').trim()).filter(Boolean)
+  if (!list.length) return
+  uni.previewImage({
+    urls: list,
+    current: current || list[0]
+  })
+}