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uni_modules/uni-media-library/common/uploader/base.js

@@ -0,0 +1,62 @@
+import createUploaderProviderInstance from './provider'
+
+class Uploader {
+  constructor(props) {
+    props = Object.assign({
+      provider: 'internal'
+    }, props)
+
+    this.uploaderInstance = createUploaderProviderInstance(props.provider)
+    this.imageLibraryProvider = props.imageLibraryProvider
+
+    this.callbacks = {}
+    this.waitUploadFiles = []
+
+    this.uploaderInstance.on('progress', (data) => {
+      this.emit('progress', data)
+    })
+    this.uploaderInstance.on('success', (data) => {
+      this.emit('success', data)
+    })
+    this.uploaderInstance.on('error', (data) => {
+      this.emit('error', data)
+    })
+  }
+
+  on (event, callback) {
+    this.callbacks[event] = callback
+  }
+
+  emit (event, data) {
+    if (this.callbacks[event]) {
+      this.callbacks[event](data)
+    }
+  }
+
+  async add (file) {
+    if (file instanceof Array) {
+      const files = await this.normalizeFiles(file)
+      this.waitUploadFiles = this.waitUploadFiles.concat(files)
+    } else {
+      this.waitUploadFiles.push(
+        await this.normalizeFiles([file])
+      )
+    }
+  }
+
+  async upload () {
+    return this.uploaderInstance.upload(this.waitUploadFiles)
+  }
+
+  async cloudUpload () {
+    return this.uploaderInstance.cloudUpload(this.waitUploadFiles, {
+      imageLibraryProvider: this.imageLibraryProvider
+    })
+  }
+
+  normalizeFiles (files) {
+    return Promise.resolve(files)
+  }
+}
+
+export default Uploader