<template>
  <el-row style="position: relative;width: 100%">
    <el-col :xl="{span:Span,offset:Offset}" :lg="lgSpan" :md="mdSpan" :sm="smSpan" :xs="xsSpan">
      <!-- 富文本组件 -->
      <quill-editor
        class="editor"
        v-model="content"
        ref="quillEditor"
        :options="editorOption"
        @blur="onEditorBlur($event)"
        @focus="onEditorFocus($event)"
        @change="onEditorChange($event)"
        @input="onEditorInput"
        @paste.native="getClipboardContent"
      ></quill-editor>


      <div style="text-align: right;z-index: 1000;position: absolute;right: 4%;margin-bottom: 5%">
        <CustomButton label="发送"
                      type="send"
                      @handleClick="$emit('ChatInput',{quillEditor:$refs.quillEditor,quillImg:$refs.quillImg})"/>
      </div>

      <!-- 图片上传组件辅助 -->
      <el-upload
        ref="quillImg"
        class="avatar-uploader quill-img"
        :action="uploadImgUrl"
        name="file"
        :headers="headers"
        :show-file-list="false"
        :on-success="quillImgSuccess"
        :on-error="uploadError"
        :before-upload="quillImgBefore"
        accept='.jpg,.jpeg,.png,.gif'
      ></el-upload>

    </el-col>


  </el-row>


</template>

<script>
import {getToken} from '@/utils/auth'

// 工具栏配置
const toolbarOptions = [
  // ["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
  // 图片
  ["image"]
];

import {quillEditor} from "vue-quill-editor";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import CustomButton from "./CustomButton.vue";

export default {
  name: "ChatInput",
  props: {
    /* 编辑器的内容 */
    value: {
      type: String
    },
    /* 图片大小 */
    maxSize: {
      type: Number,
      default: 4000 //kb
    },
    lgSpan: {
      type: Number,
      default: 8
    },
    mdSpan: {
      type: Number,
      default: 8
    },
    smSpan: {
      type: Number,
      default: 12
    },
    Span: {
      type: Number,
      default: 24
    },
    xsSpan: {
      type: Number,
      default: 24
    },
    Offset: {
      type: Number,
      default: 0
    }
  },
  components: {CustomButton, quillEditor},
  data() {
    return {
      content: this.value,
      imageBase64: "",
      editorOption: {
        theme: "snow", // or 'bubble'
        placeholder: "",
        modules: {
          clipboard: {
            //图片样式


          },

          toolbar: {
            container: toolbarOptions,
            handlers: {
              image: function (value) {
                if (value) {
                  // 触发input框选择图片文件
                  document.querySelector(".quill-img input").click();
                } else {
                  this.quill.format("image", false);
                }
              }
            }
          },

        }
      },
      uploadImgUrl: process.env.VUE_APP_BASE_API + "/common/upload", // 上传的图片服务器地址
      headers: {
        Authorization: 'Bearer ' + getToken()
      }
    };
  },
  watch: {
    value: function () {
      this.content = this.value;
    }
  },
  mounted() {
    //监听剪贴板事件
    // document.addEventListener('paste', this.getClipboardContent);
  },
  beforeDestroy() {
    // 移除监听事件
    // document.removeEventListener('paste', this.getClipboardContent);
  },
  methods: {
    onEditorBlur() {
      //失去焦点事件
    },
    onEditorFocus() {
      //获得焦点事件
    },
    fileToBase64(file) {
      return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.readAsDataURL(file);
        reader.onload = () => resolve(reader.result);
        reader.onerror = error => reject(error);
      })
    },
    async getClipboardContent(event) {
      try {
        event.preventDefault();
        // 检查浏览器是否支持Clipboard API
        if (navigator.clipboard && navigator.clipboard.read) {
          const items = await navigator.clipboard.read();
          for (const item of items) {
            if (item.types.includes('image/png') || item.types.includes('image/jpeg')) {
              const blob = await item.getType(item.types.find(type => type.startsWith('image/')));
              const file = new File([blob], 'image.png', {type: 'image/png'});
              let that = this;
              this.fileToBase64(file).then(res => {
                that.imageBase64 = res;
                // 创建一个新的 Image 对象
                var img = new Image();
                img.src = that.imageBase64;
                // 设置图片样式
                img.style.maxWidth = '50px';
                img.style.maxHeight = '50px';
                // 将图片插入到编辑器中
                var range = this.$refs.quillEditor.quill.getSelection();
                this.$refs.quillEditor.quill.insertEmbed(range.index, 'image', img.src);
                this.$refs.quillEditor.quill.setSelection(range.index + 1);
              })
            }else if(item.types.includes('text/plain')){
              const text =   await navigator.clipboard.readText();
              console.log(text)
              this.$refs.quillEditor.quill.insertText(this.$refs.quillEditor.quill.getSelection().index, text);
              this.$refs.quillEditor.quill.setSelection(this.$refs.quillEditor.quill.getSelection().index + text.length);

            }
          }

        }
      } catch (err) {
        console.error('Failed to read clipboard content: ', err);
        this.errorMessage = '读取剪切板内容失败';
      }
    },
    onEditorChange() {
      //内容改变事件
      this.$emit("input", this.content);
    },
    onEditorInput(val) {

    },

    // 富文本图片上传前
    quillImgBefore(file) {
      let fileType = file.type;
      let fileSize = file.size / 1024 / 1024;
      if (fileType === 'image/jpeg' || fileType === 'image/png') {
        if (fileSize >= 5) {
          this.$message.error('图片大小不能超过5M')
        }

        return true;
      } else {
        this.$message.error('请插入图片类型文件(jpg/jpeg/png)');
        return false;
      }
    },

    quillImgSuccess(res, file) {
      // res为图片服务器返回的数据
      // 获取富文本组件实例
      let quill = this.$refs.quillEditor.quill;
      // 如果上传成功
      if (res.code == 200) {
        // 获取光标所在位置
        let length = quill.getSelection().index;
        // 插入图片  res.url为服务器返回的图片地址
        quill.insertEmbed(length, "image", res.url);
        // 调整光标到最后
        quill.setSelection(length + 1);
      } else {
        // this.$message.error("图片插入失败");
      }
    },
    // 富文本图片上传失败
    uploadError() {
      // loading动画消失
      // this.$message.error("图片插入失败");
    }
  }
};
</script>

<style scoped>
.editor {
  line-height: normal !important;
  max-height: 150px !important;
  white-space: normal !important;

}

::v-deep .ql-editor {
  height: 110px !important;
}

.quill-editor >>> .ql-container {
  max-height: 120px !important;
  overflow-y: scroll !important;
}

.quill-editor >>> .ql-snow {
  padding: 0 !important;
  border-left: 0;
  border-top: 1px solid #F2F3F4;
  border-bottom: 0;
  border-right: 0;

}


.quill-editor >>> .ql-snow .ql-editor img {
  max-width: 50px !important;
  max-height: 50px !important;
}

.quill-img {
  display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}

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

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

