From 3271a1eed1a618cfbf5419279c48ad86283cdb51 Mon Sep 17 00:00:00 2001
From: KUN1007 <yuyu_kun@sina.com>
Date: Wed, 11 Oct 2023 21:20:30 +0800
Subject: [PATCH] feat: upload avatar logic

---
 src/components/top-bar/KUNGalgameUserInfo.vue |   5 +
 src/views/kungalgamer/components/Avatar.vue   | 209 ++++++++++++++++--
 src/views/kungalgamer/content/Settings.vue    |  81 ++++++-
 .../kungalgamer/utils/handleFileChange.ts     |  91 ++++++++
 4 files changed, 371 insertions(+), 15 deletions(-)
 create mode 100644 src/views/kungalgamer/utils/handleFileChange.ts

diff --git a/src/components/top-bar/KUNGalgameUserInfo.vue b/src/components/top-bar/KUNGalgameUserInfo.vue
index 3bec19bf..f00130f1 100644
--- a/src/components/top-bar/KUNGalgameUserInfo.vue
+++ b/src/components/top-bar/KUNGalgameUserInfo.vue
@@ -141,6 +141,11 @@ onMounted(() => {
     align-items: center;
     border-radius: 5px;
     a {
+      width: 100%;
+      height: 100%;
+      display: flex;
+      justify-content: center;
+      align-items: center;
       color: var(--kungalgame-blue-5);
     }
     &:hover {
diff --git a/src/views/kungalgamer/components/Avatar.vue b/src/views/kungalgamer/components/Avatar.vue
index 361fa455..bc53fe6a 100644
--- a/src/views/kungalgamer/components/Avatar.vue
+++ b/src/views/kungalgamer/components/Avatar.vue
@@ -1,24 +1,205 @@
 <script setup lang="ts">
-import { defineComponent, ref } from 'vue'
+import { ref } from 'vue'
+import message from '@/components/alert/Message'
+// 上传头像的函数
+import {
+  checkImageValid,
+  resizeImage,
+  handleUploadAvatar,
+} from '../utils/handleFileChange'
 
-const selectedFile = ref(null)
+// 准备给后端的图片
+const uploadedImage = ref<Blob>()
+// 上传好的头像链接
+const selectedFileUrl = ref<string>('')
+// 上传的 input
+const input = ref<HTMLElement>()
 
-const handleFileChange = (event: Event) => {}
+// 点击上传
+const handleFileChange = async (event: Event) => {
+  const imgUrl = await handleUploadAvatar(event)
+  if (imgUrl) {
+    selectedFileUrl.value = imgUrl
+  }
+}
 
-const handleSubmit = () => {}
+// 拖拽上传
+const handleDrop = async (event: DragEvent) => {
+  // 阻止浏览器默认行为
+  event.preventDefault()
+  event.stopPropagation()
+
+  const dataTransfer = event.dataTransfer
+  if (dataTransfer && dataTransfer.files.length > 0) {
+    const file = dataTransfer.files[0]
+
+    // 验证文件类型，正确则上传
+    if (checkImageValid(file)) {
+      const resizedFile = await resizeImage(file)
+      uploadedImage.value = resizedFile
+
+      selectedFileUrl.value = URL.createObjectURL(resizedFile)
+    }
+  }
+}
+
+// 拖拽上传完成后阻止默认行为
+const handleDragOver = (event: DragEvent) => {
+  event.preventDefault()
+  event.dataTransfer!.dropEffect = 'copy'
+}
+
+// 更改头像
+const handleChangeAvatar = () => {
+  message(
+    'Image API is not yet completed, stay tuned for updates',
+    '图片接口还未完成，敬请期待',
+    'warn'
+  )
+  if (uploadedImage.value) {
+    const formData = new FormData()
+    formData.append('avatar', uploadedImage.value)
+
+    // 在这里执行上传逻辑 TODO:
+    // 上传完成后可以显示成功消息或者刷新用户界面
+  }
+}
 </script>
 
 <template>
-  <div>
-    <label for="avatar">Choose images to upload (PNG, JPG)</label>
-    <input
-      type="file"
-      id="avatar"
-      accept=".jpg, .png"
-      @change="handleFileChange"
-    />
+  <div class="avatar">
+    <div class="title">更改头像</div>
+
+    <div class="container">
+      <div
+        ref="upload"
+        tabindex="0"
+        class="avatar-upload"
+        @drop="handleDrop($event)"
+        @dragover="handleDragOver"
+        @click="input?.click()"
+      >
+        <!-- 加号提示 -->
+        <span class="plus" v-if="!selectedFileUrl"></span>
+        <img
+          class="avatar-preview"
+          :src="selectedFileUrl"
+          alt="Uploaded Image"
+          v-if="selectedFileUrl"
+        />
+        <input
+          ref="input"
+          hidden
+          type="file"
+          accept=".jpg, .jpeg, .png"
+          @change="handleFileChange($event)"
+        />
+      </div>
+
+      <!-- 帮助区域 -->
+      <div class="help">
+        <p>拖拽图片到方框内或点击方框上传</p>
+        <div>支持 1007KB 以内的图片，支持 jpg 和 png 格式</div>
+        <button @click="handleChangeAvatar">确定更改</button>
+      </div>
+    </div>
   </div>
-  <button @click="handleSubmit">submit</button>
 </template>
 
-<style lang="scss" scoped></style>
+<style lang="scss" scoped>
+.avatar {
+  width: 100%;
+  margin-bottom: 20px;
+}
+
+.title {
+  margin-bottom: 10px;
+}
+
+.container {
+  width: 100%;
+  display: flex;
+  justify-content: space-around;
+}
+
+.avatar-upload {
+  width: 150px;
+  height: 150px;
+  border: 1px solid var(--kungalgame-blue-4);
+  border-radius: 5px;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  transition: all 0.2s;
+
+  &:hover {
+    border: 1px solid var(--kungalgame-pink-3);
+    .plus::before,
+    .plus::after {
+      background: var(--kungalgame-pink-3);
+    }
+  }
+
+  /* 单标签加号 */
+  .plus {
+    display: inline-block;
+    position: relative;
+  }
+
+  .plus::before,
+  .plus::after {
+    transition: all 0.2s;
+    content: '';
+    position: absolute;
+    background: var(--kungalgame-blue-4);
+  }
+
+  .plus::before {
+    width: 20px;
+    height: 2px;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+  }
+
+  .plus::after {
+    width: 2px;
+    height: 20px;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+  }
+}
+
+/* 头像预览 */
+.avatar-preview {
+  max-width: 140px;
+  max-height: 140px;
+}
+
+.help {
+  display: flex;
+  flex-direction: column;
+  justify-content: space-around;
+  align-items: center;
+  font-size: small;
+
+  button {
+    cursor: pointer;
+    padding: 5px 17px;
+    border: 1px solid var(--kungalgame-blue-4);
+    background-color: var(--kungalgame-trans-white-9);
+    border-radius: 5px;
+    color: var(--kungalgame-blue-4);
+    transition: all 0.2s;
+
+    &:hover {
+      background-color: var(--kungalgame-blue-4);
+      color: var(--kungalgame-white);
+    }
+    &:active {
+      transform: scale(0.9);
+    }
+  }
+}
+</style>
diff --git a/src/views/kungalgamer/content/Settings.vue b/src/views/kungalgamer/content/Settings.vue
index dd4ecce1..c121b6b8 100644
--- a/src/views/kungalgamer/content/Settings.vue
+++ b/src/views/kungalgamer/content/Settings.vue
@@ -1,11 +1,90 @@
 <script setup lang="ts">
+import { ref } from 'vue'
 import Avatar from '../components/Avatar.vue'
+
+// 签名的内容
+const bioValue = ref('')
+
+// 更改签名
+const handleChangeBio = () => {}
 </script>
 
 <template>
   <div class="settings">
+    <!-- 更改头像 -->
     <Avatar />
+
+    <!-- 更改 bio -->
+    <div class="bio">
+      <div class="title">更改签名</div>
+      <textarea
+        name="bio"
+        placeholder="请输入您的新签名，最大 107 个字符"
+        rows="5"
+        v-model="bioValue"
+      >
+      </textarea>
+
+      <div class="help">
+        <span class="bioCount">字数：{{ bioValue.length }}</span>
+        <button @click="handleChangeBio">确定更改</button>
+      </div>
+    </div>
   </div>
 </template>
 
-<style lang="scss" scoped></style>
+<style lang="scss" scoped>
+.settings {
+  width: 100%;
+  height: 100%;
+  padding: 10px 17px;
+}
+
+.bio {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+
+  textarea {
+    color: var(--kungalgame-font-color-3);
+    flex: 1;
+    margin-bottom: 10px;
+    width: 100%;
+    border: 1px solid var(--kungalgame-blue-4);
+    background-color: var(--kungalgame-trans-white-9);
+    border-radius: 5px;
+    padding: 5px;
+    &:focus {
+      border: 1px solid var(--kungalgame-pink-3);
+    }
+  }
+}
+
+.title {
+  margin-bottom: 10px;
+}
+
+.help {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+
+  button {
+    cursor: pointer;
+    padding: 5px 17px;
+    border: 1px solid var(--kungalgame-blue-4);
+    background-color: var(--kungalgame-trans-white-9);
+    border-radius: 5px;
+    color: var(--kungalgame-blue-4);
+    transition: all 0.2s;
+
+    &:hover {
+      background-color: var(--kungalgame-blue-4);
+      color: var(--kungalgame-white);
+    }
+    &:active {
+      transform: scale(0.9);
+    }
+  }
+}
+</style>
diff --git a/src/views/kungalgamer/utils/handleFileChange.ts b/src/views/kungalgamer/utils/handleFileChange.ts
new file mode 100644
index 00000000..c00b15d4
--- /dev/null
+++ b/src/views/kungalgamer/utils/handleFileChange.ts
@@ -0,0 +1,91 @@
+import message from '@/components/alert/Message'
+
+const dataURItoBlob = (dataURI: string) => {
+  const byteString = atob(dataURI.split(',')[1])
+  const ab = new ArrayBuffer(byteString.length)
+  const ia = new Uint8Array(ab)
+  for (let i = 0; i < byteString.length; i++) {
+    ia[i] = byteString.charCodeAt(i)
+  }
+  return new Blob([ab], { type: 'image/jpeg' })
+}
+
+// 检查图片类型是否合法，允许 png 和 jpg
+export const checkImageValid = (file: File) => {
+  if (file.type === 'image/jpeg' || file.type === 'image/png') {
+    return true
+  } else {
+    message(
+      'Invalid file type. Please select a JPEG or PNG image.',
+      '非法的文件类型，请选择 JPG 或 PNG 图片！',
+      'warn'
+    )
+    return false
+  }
+}
+
+// 转换压缩图片
+export const resizeImage = (file: File): Promise<Blob> => {
+  return new Promise((resolve, reject) => {
+    const image = new Image()
+    image.src = URL.createObjectURL(file)
+    image.onload = () => {
+      // 这里要求图片最大长宽均为 177px
+      const maxWidth = 177
+      const maxHeight = 177
+      let newWidth = image.width
+      let newHeight = image.height
+
+      if (image.width > maxWidth || image.height > maxHeight) {
+        const aspectRatio = image.width / image.height
+        if (aspectRatio > 1) {
+          newWidth = maxWidth
+          newHeight = newWidth / aspectRatio
+        } else {
+          newHeight = maxHeight
+          newWidth = newHeight * aspectRatio
+        }
+      }
+
+      const canvas = document.createElement('canvas')
+      const ctx = canvas.getContext('2d')
+      canvas.width = newWidth
+      canvas.height = newHeight
+
+      ctx?.drawImage(image, 0, 0, newWidth, newHeight)
+      const resizedFile = dataURItoBlob(canvas.toDataURL('image/webp', 0.77))
+
+      if (resizedFile.size > 1007 * 1024) {
+        message(
+          'Image is too large. Please select an image smaller than 1007KB!',
+          '文件过大, 请选择小于 1007KB 的文件! ',
+          'warn'
+        )
+        reject(
+          'Image is too large. Please select an image smaller than 1007KB!'
+        )
+      } else {
+        resolve(resizedFile)
+      }
+    }
+  })
+}
+
+// 上传头像
+export const handleUploadAvatar = async (event: Event) => {
+  const input = event.target as HTMLInputElement
+
+  if (input.files && input.files[0]) {
+    const file = input.files[0]
+
+    // 检查图片是否合法，不合法则退出
+    const isFileValid = checkImageValid(file)
+    if (!isFileValid) {
+      return
+    }
+
+    // 处理图片
+    const resizedFile = await resizeImage(file)
+    return URL.createObjectURL(resizedFile)
+  }
+}