<template>
  <div>
    <el-upload
      v-if="type === 'url'"
      :action="upload.url"
      :before-upload="handleBeforeUpload"
      :on-success="handleUploadSuccess"
      :on-error="handleUploadError"
      class="editor-img-uploader"
      name="file"
      :show-file-list="false"
      :headers="upload.headers"
    >
      <i ref="uploadRef"></i>
    </el-upload>
  </div>
  <div class="editor">
    <quill-editor
      ref="quillEditorRef"
      v-model:content="content"
      content-type="html"
      :options="options"
      :style="styles"
      @text-change="(e: any) => $emit('update:modelValue', content)"
    />
  </div>
</template>

<script setup lang="ts">
import '@vueup/vue-quill/dist/vue-quill.snow.css';

import { QuillEditor, Quill } from '@vueup/vue-quill';
import { propTypes } from '@/utils/propTypes';
import { globalUploadHeaders } from '@/utils/request';

defineEmits(['update:modelValue']);

const props = defineProps({
  /* 编辑器的内容 */
  modelValue: propTypes.string,
  /* 高度 */
  height: propTypes.number.def(400),
  /* 最小高度 */
  minHeight: propTypes.number.def(400),
  /* 只读 */
  readOnly: propTypes.bool.def(false),
  /* 上传文件大小限制(MB) */
  fileSize: propTypes.number.def(5),
  /* 类型（base64格式、url格式） */
  type: propTypes.string.def('url')
});

const { proxy } = getCurrentInstance() as ComponentInternalInstance;

const upload = reactive<UploadOption>({
  headers: globalUploadHeaders(),
  url: import.meta.env.VITE_APP_BASE_API + '/resource/oss/upload'
});
const quillEditorRef = ref();
const uploadRef = ref<HTMLDivElement>();

const options = ref<any>({
  theme: 'snow',
  bounds: document.body,
  debug: 'warn',
  modules: {
    // 工具栏配置
    toolbar: {
      container: [
        ['bold', 'italic', 'underline', 'strike'], // 加粗 斜体 下划线 删除线
        ['blockquote', 'code-block'], // 引用  代码块
        [{ list: 'ordered' }, { list: 'bullet' }], // 有序、无序列表
        [{ indent: '-1' }, { indent: '+1' }], // 缩进
        [{ size: ['small', false, 'large', 'huge'] }], // 字体大小
        [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
        [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
        [{ align: [] }], // 对齐方式
        ['clean'], // 清除文本格式
        ['link', 'image', 'video'] // 链接、图片、视频
      ],
      handlers: {
        image: (value: boolean) => {
          if (value) {
            // 调用element图片上传
            uploadRef.value.click();
          } else {
            Quill.format('image', true);
          }
        }
      }
    }
  },
  placeholder: '请输入内容',
  readOnly: props.readOnly
});

const styles = computed(() => {
  let style: any = {};
  if (props.minHeight) {
    style.minHeight = `${props.minHeight}px`;
  }
  if (props.height) {
    style.height = `${props.height}px`;
  }
  return style;
});

const content = ref('');
watch(
  () => props.modelValue,
  (v: string) => {
    if (v !== content.value) {
      content.value = v || '<p></p>';
    }
  },
  { immediate: true }
);

// 图片上传成功返回图片地址
const handleUploadSuccess = (res: any) => {
  // 如果上传成功
  if (res.code === 200) {
    // 获取富文本实例
    let quill = toRaw(quillEditorRef.value).getQuill();
    // 获取光标位置
    let length = quill.selection.savedRange.index;
    // 插入图片，res为服务器返回的图片链接地址
    quill.insertEmbed(length, 'image', res.data.url);
    // 调整光标到最后
    quill.setSelection(length + 1);
    proxy?.$modal.closeLoading();
  } else {
    proxy?.$modal.msgError('图片插入失败');
    proxy?.$modal.closeLoading();
  }
};

// 图片上传前拦截
// 在 handleBeforeUpload 中添加预览逻辑
const handleBeforeUpload = (file: any) => {
  const type = ['image/jpeg', 'image/jpg', 'image/png', 'image/svg'];
  const isJPG = type.includes(file.type);

  if (!isJPG) {
    proxy?.$modal.msgError(`图片格式错误!`);
    return false;
  }

  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  proxy?.$modal.loading('正在上传文件，请稍候...');
  return true;
};

// 图片失败拦截
const handleUploadError = (err: any) => {
  proxy?.$modal.msgError('上传文件失败');
};
</script>

<style scoped>
.quill-wrapper {
  position: relative;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  overflow: hidden;
}

.editor-img-uploader {
  display: none;
}

.editor {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
</style>

<style scoped lang="scss">
::v-deep(.ql-toolbar) {
  white-space: pre-wrap !important;
  line-height: normal !important;
}

// 自定义提示文本
::v-deep(.ql-snow .ql-tooltip[data-mode='link']::before) {
  content: '请输入链接地址:';
}

::v-deep(.ql-snow .ql-tooltip.ql-editing a.ql-action::after) {
  border-right: 0;
  content: '保存';
  padding-right: 0;
}

::v-deep(.ql-snow .ql-tooltip[data-mode='video']::before) {
  content: '请输入视频地址:';
}

// 字体大小
::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-label::before),
::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-item::before) {
  content: '14px';
}

::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='small']::before),
::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='small']::before) {
  content: '10px';
}

::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='large']::before),
::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='large']::before) {
  content: '18px';
}

::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='huge']::before),
::v-deep(.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='huge']::before) {
  content: '32px';
}

// 标题
::v-deep(.ql-snow .ql-picker.ql-header .ql-picker-label::before),
::v-deep(.ql-snow .ql-picker.ql-header .ql-picker-item::before) {
  content: '文本';
}

@for $i from 1 through 6 {
  ::v-deep(.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='#{$i}']::before),
  ::v-deep(.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='#{$i}']::before) {
    content: '标题#{$i}';
  }
}

// 字体
::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-label::before),
::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-item::before) {
  content: '标准字体';
}

::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='serif']::before),
::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='serif']::before) {
  content: '衬线字体';
}

::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='monospace']::before),
::v-deep(.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='monospace']::before) {
  content: '等宽字体';
}
</style>
