<script setup lang="ts">
import { reactive } from 'vue'
import { ElMessage } from 'element-plus'
import PageCard from '@/components/PageCard.vue'

const settings = reactive({
  outputName: 'converted-data',
  encoding: 'UTF-8',
})

function showPrototypeNotice() {
  ElMessage.info('当前仅完成界面设计，转换功能将在后续接入')
}

function resetSettings() {
  Object.assign(settings, {
    outputName: 'converted-data',
    encoding: 'UTF-8',
  })
}
</script>

<template>
  <PageCard
    class="data-convert-page"
    title="数据类型转换"
    subtitle="将 JSON 文件转换为便于训练和评测使用的 JSONL 格式"
  >
    <div class="converter-panel">
      <div class="panel-header">
        <div class="tool-icon" aria-hidden="true">
          <i class="fa fa-exchange" />
        </div>
        <div>
          <h3>JSON 转 JSONL</h3>
          <p>每条 JSON 数据将输出为 JSONL 文件中的一行记录</p>
        </div>
      </div>

      <el-form class="converter-form" label-position="top">
        <el-form-item label="转换类型">
          <div class="format-field" aria-label="JSON 转 JSONL">
            <span>JSON</span>
            <i class="fa fa-long-arrow-right" aria-hidden="true" />
            <span>JSONL</span>
          </div>
        </el-form-item>

        <el-form-item label="源文件" required>
          <button class="upload-zone" type="button" @click="showPrototypeNotice">
            <i class="fa fa-cloud-upload" aria-hidden="true" />
            <span class="upload-content">
              <strong>点击选择或拖拽 JSON 文件到此处</strong>
              <small>仅支持 .json 格式，单文件不超过 200 MB</small>
            </span>
            <span class="select-button">选择文件</span>
          </button>
        </el-form-item>

        <div class="form-row">
          <el-form-item label="输出文件名">
            <el-input v-model="settings.outputName">
              <template #append>.jsonl</template>
            </el-input>
          </el-form-item>

          <el-form-item label="字符编码">
            <el-select v-model="settings.encoding" style="width: 100%">
              <el-option label="UTF-8" value="UTF-8" />
            </el-select>
          </el-form-item>
        </div>

        <div class="format-tip">
          <i class="fa fa-info-circle" aria-hidden="true" />
          <span>支持由 JSON 数组转换为 JSONL，每个数组元素输出为一行。</span>
        </div>
      </el-form>

      <div class="panel-footer">
        <span class="prototype-label">当前为 UI 原型，暂不执行实际转换</span>
        <div class="actions">
          <el-button @click="resetSettings">重置</el-button>
          <el-tooltip content="转换功能将在后续开发中接入" placement="top">
            <span><el-button type="primary" disabled>开始转换</el-button></span>
          </el-tooltip>
        </div>
      </div>
    </div>
  </PageCard>
</template>

<style scoped lang="scss">
.converter-panel {
  width: 100%;
  min-height: calc(100vh - 220px);
  border: 1px solid #e4e7ed;
  border-radius: 8px;
  background: #fff;
  display: flex;
  flex-direction: column;
}

.panel-header {
  min-height: 72px;
  padding: 16px 20px;
  border-bottom: 1px solid #ebeef5;
  background: #fafafa;
  display: flex;
  align-items: center;
  gap: 12px;
  box-sizing: border-box;

  .tool-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    border-radius: 6px;
    background: var(--el-color-primary-light-9);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  h3 {
    margin: 0;
    color: #303133;
    font-size: 15px;
    font-weight: 600;
  }

  p {
    margin: 4px 0 0;
    color: #909399;
    font-size: 12px;
  }
}

.converter-form {
  flex: 1;
  padding: 22px 24px 6px;

  :deep(.el-form-item) {
    margin-bottom: 20px;
  }

  :deep(.el-form-item__label) {
    padding-bottom: 8px;
    color: #606266;
    font-size: 13px;
  }
}

.format-field {
  width: 100%;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  background: #f5f7fa;
  color: #303133;
  display: flex;
  align-items: center;
  gap: 14px;
  box-sizing: border-box;
  font-size: 13px;
  font-weight: 500;

  i {
    color: #909399;
  }
}

.upload-zone {
  width: 100%;
  min-height: 112px;
  padding: 20px;
  border: 1px dashed #b8c4d1;
  border-radius: 6px;
  background: #fafcff;
  color: #606266;
  cursor: pointer;
  font: inherit;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  transition: border-color 0.2s ease, background 0.2s ease;

  &:hover,
  &:focus-visible {
    border-color: var(--primary-color);
    background: var(--el-color-primary-light-9);
    outline: none;
  }

  > i {
    color: var(--primary-color);
    font-size: 24px;
  }

  .upload-content {
    min-width: 0;
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 5px;
  }

  strong {
    color: #303133;
    font-size: 13px;
    font-weight: 500;
  }

  small {
    color: #909399;
    font-size: 12px;
  }

  .select-button {
    min-height: 32px;
    padding: 0 14px;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    background: #fff;
    color: #606266;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
  }
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(180px, 1fr);
  gap: 16px;
}

.format-tip {
  min-height: 38px;
  padding: 9px 12px;
  border-radius: 4px;
  background: var(--el-color-primary-light-9);
  color: #606266;
  display: flex;
  align-items: center;
  gap: 8px;
  box-sizing: border-box;
  font-size: 12px;

  i {
    color: var(--primary-color);
  }
}

.panel-footer {
  min-height: 64px;
  padding: 12px 24px;
  border-top: 1px solid #ebeef5;
  background: #fafafa;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  box-sizing: border-box;

  .prototype-label {
    color: #909399;
    font-size: 12px;
  }

  .actions {
    display: flex;
    gap: 10px;
  }
}

@media (max-width: 640px) {
  .converter-form {
    padding: 18px 16px 4px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .upload-zone {
    align-items: flex-start;
    flex-wrap: wrap;

    .select-button {
      margin-left: 38px;
    }
  }

  .panel-footer {
    padding: 12px 16px;
    align-items: flex-end;
    flex-direction: column;
  }
}
</style>
