<!--
  Copyright © 2026 Qiantong Technology Co., Ltd.
  qModel Model Platform(Open Source Edition)
   *
  License:
  Released under the Apache License, Version 2.0.
  You may use, modify, and distribute this software for commercial purposes
  under the terms of the License.
   *
  Special Notice:
  All derivative versions are strictly prohibited from modifying or removing
  the default system logo and copyright information.
  For brand customization, please apply for brand customization authorization via official channels.
   *
  More information: https://qmodel.qiantong.tech/business.html
   *
  ============================================================================
   *
  版权所有 © 2026 江苏千桐科技有限公司
  qModel 模型平台（开源版）
   *
  许可协议：
  本项目基于 Apache License 2.0 开源协议发布，
  允许在遵守协议的前提下进行商用、修改和分发。
   *
  特别说明：
  所有衍生版本不得修改或移除系统默认的 LOGO 和版权信息；
  如需定制品牌，请通过官方渠道申请品牌定制授权。
   *
  更多信息请访问：https://qmodel.qiantong.tech/business.html
-->

<template>
  <div class="component-upload-image">
    <el-upload
      multiple
      :action="uploadImgUrl"
      list-type="picture-card"
      :on-success="handleUploadSuccess"
      :before-upload="handleBeforeUpload"
      :limit="limit"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      ref="imageUpload"
      :before-remove="handleDelete"
      :show-file-list="true"
      :headers="headers"
      :file-list="fileList"
      :on-preview="handlePictureCardPreview"
      :class="{ hide: fileList.length >= limit }"
      :data="uploadData"
    >
      <el-icon class="avatar-uploader-icon"><plus /></el-icon>
    </el-upload>
    <!-- 上传提示 -->
    <!-- <div class="el-upload__tip" v-if="showTip">
      请上传
      <template v-if="fileSize">
        大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
      </template>
      <template v-if="fileType">
        格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
      </template>
      的文件
    </div> -->

    <!-- 大图预览 -->
    <el-image-viewer
        v-if="dialogVisible"
        :onClose="onClosePreView"
        :url-list="imagePreviewList"
        :src="dialogImageUrl"
        :initial-index="currentIndex"
    >
    </el-image-viewer>

<!--    <el-dialog-->
<!--      v-model="dialogVisible"-->
<!--      title="预览"-->
<!--      width="800px"-->
<!--      :append-to="$refs['app-container']"-->
<!--       draggable destroy-on-close-->
<!--    >-->
<!--      <img-->
<!--        :src="dialogImageUrl"-->
<!--        style="display: block; max-width: 100%; margin: 0 auto"-->
<!--      />-->
<!--    </el-dialog>-->
  </div>
</template>

<script setup>
import { getToken } from "@/utils/auth";

const props = defineProps({
  modelValue: [String, Object, Array],
  // 图片数量限制
  limit: {
    type: Number,
    default: 5,
  },
  // 大小限制(MB)
  fileSize: {
    type: Number,
    default: 5,
  },
  // 文件类型, 例如['png', 'jpg', 'jpeg']
  fileType: {
    type: Array,
    default: () => ["png", "jpg", "jpeg"],
  },
  // 是否显示提示
  isShowTip: {
    type: Boolean,
    default: true
  },
  // platform参数
  platForm: {
    type: String,
    default: 'local'
  },
});

const { proxy } = getCurrentInstance();
const emit = defineEmits();
const number = ref(0);
const uploadList = ref([]);
const dialogImageUrl = ref("");
const dialogVisible = ref(false);
const baseUrl = import.meta.env.VITE_APP_BASE_API;
const uploadImgUrl = ref(import.meta.env.VITE_APP_BASE_API + "/upload"); // 上传的图片服务器地址
const headers = ref({ Authorization: "Bearer " + getToken() });
const fileList = ref([]);
const imagePreviewList = ref([])
const currentIndex = ref(0)
const uploadData = ref({
  platForm: props.platForm
});
const showTip = computed(
  () => props.isShowTip && (props.fileType || props.fileSize)
);

watch(() => props.modelValue, val => {
  if (val) {
    // 首先将值转为数组
    const list = Array.isArray(val) ? val : props.modelValue.split(",");
    // 然后将数组转为对象数组
    fileList.value = list.map(item => {
      // 如果 item 是字符串，统一处理成对象
      if (typeof item === "string") {
        const url = item.indexOf(baseUrl) === -1 && props.platForm === '' ? baseUrl + item : item;
        return { name: url, url };
      }
      // 如果 item 已经是对象，直接返回
      return item;
    });
    // fileList.value = list.map(item => {
    //   if (typeof item === "string") {
    //     if (item.indexOf(baseUrl) === -1) {
    //       item = { name: baseUrl + item, url: baseUrl + item };
    //     } else {
    //       item = { name: item, url: item };
    //     }
    //   }
    //   return item;
    // });
  } else {
    fileList.value = [];
    return [];
  }
},{ deep: true, immediate: true });

// 上传前loading加载
function handleBeforeUpload(file) {
  let isImg = false;
  if (props.fileType.length) {
    let fileExtension = "";
    if (file.name.lastIndexOf(".") > -1) {
      fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
    }
    isImg = props.fileType.some(type => {
      if (file.type.indexOf(type) > -1) return true;
      if (fileExtension && fileExtension.indexOf(type) > -1) return true;
      return false;
    });
  } else {
    isImg = file.type.indexOf("image") > -1;
  }
  if (!isImg) {
    proxy.$modal.msgError(
      `文件格式不正确, 请上传${props.fileType.join("/")}图片格式文件!`
    );
    return false;
  }
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      proxy.$modal.msgError(`上传头像图片大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  proxy.$modal.loading("正在上传图片，请稍候...");
  number.value++;
}

// 文件个数超出
function handleExceed() {
  proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
}

// 上传成功回调
function handleUploadSuccess(res, file) {
  if (res.url) {
    uploadList.value.push({ name: '/profile/' + res.path + res.filename, url: res.url });
    uploadedSuccessfully();
  } else {
    number.value--;
    proxy.$modal.closeLoading();
    proxy.$modal.msgError(res.msg);
    proxy.$refs.imageUpload.handleRemove(file);
    uploadedSuccessfully();
  }
}

// 删除图片
function handleDelete(file) {
  const findex = fileList.value.map(f => f.name).indexOf(file.name);
  if (findex > -1 && uploadList.value.length === number.value) {
    fileList.value.splice(findex, 1);
    emit("update:modelValue", listToString(fileList.value));
    return false;
  }
}

// 上传结束处理
function uploadedSuccessfully() {
  if (number.value > 0 && uploadList.value.length === number.value) {
    fileList.value = fileList.value.filter(f => f.url !== undefined).concat(uploadList.value);
    uploadList.value = [];
    number.value = 0;
    emit("update:modelValue", listToString(fileList.value));
    proxy.$modal.closeLoading();
  }
}

// 上传失败
function handleUploadError() {
  proxy.$modal.msgError("上传图片失败");
  proxy.$modal.closeLoading();
}

// 预览
function handlePictureCardPreview(file) {
  dialogImageUrl.value = file.url.replace(baseUrl, "");
  dialogVisible.value = true;
  fileList.value.forEach((item, index) => {
    imagePreviewList.value.push(item.url.replace(baseUrl, ""))
    //获取点击预览图片的下标
    if (dialogImageUrl.value === item.url.replace(baseUrl, "")) {
      currentIndex.value = index;
    }
  })
}

//关闭预览
function onClosePreView() {
  dialogVisible.value = false;
}

// 对象转成指定字符串分隔
function listToString(list, separator) {
  let strs = "";
  separator = separator || ",";
  for (let i in list) {
    if (undefined !== list[i].url && list[i].url.indexOf("blob:") !== 0) {
      strs += list[i].url.replace(baseUrl, "") + separator;
    }
  }
  return strs != "" ? strs.substr(0, strs.length - 1) : "";
}
</script>

<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
:deep(.hide .el-upload--picture-card) {
    display: none;
}
</style>
