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utils/downloadRemoteImage.js

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+const fs = require('fs-extra')
+const path = require('path')
+const axios = require('axios')
+
+const EXT_BY_CONTENT_TYPE = {
+  'image/png': '.png',
+  'image/webp': '.webp',
+  'image/gif': '.gif',
+  'image/jpeg': '.jpg',
+}
+
+/**
+ * Downloads a remote image and stores it under storage/profiles, the same
+ * directory setProfileImageController.js already uses for avatar uploads.
+ * Returns the relative "/profiles/<file>" path expected on UserModel.profile_image.
+ */
+async function downloadImageToProfiles(url, baseName) {
+  const uploadDir = path.join(__dirname, '../storage/profiles')
+  if (!fs.existsSync(uploadDir)) {
+    fs.mkdirSync(uploadDir, { recursive: true })
+  }
+
+  const response = await axios.get(url, {
+    responseType: 'arraybuffer',
+    timeout: 10000,
+  })
+
+  const contentType = String(response.headers['content-type'] || '').split(';')[0].trim()
+  const ext = EXT_BY_CONTENT_TYPE[contentType] || '.jpg'
+  const safeBaseName = String(baseName || 'user').replace(/[^\w.\-]/g, '_')
+  const uniqueFileName = `${safeBaseName}-${Date.now()}${ext}`
+  const filePath = path.join(uploadDir, uniqueFileName)
+
+  await fs.writeFile(filePath, Buffer.from(response.data))
+
+  return `/profiles/${uniqueFileName}`
+}
+
+module.exports = { downloadImageToProfiles }