<template>
  <div>
    <span class="kv-description" v-if="description">
      {{ description }}
    </span>
    <div class="kv-row" v-for="(item, index) in items" :key="index">
      <el-row type="flex" :gutter="20" justify="space-between" align="middle">
        <el-col>
          <el-input v-if="!suggestions" :disabled="isReadOnly" v-model="item.name" size="small" maxlength="200"
                    @change="change"
                    :placeholder="keyText" show-word-limit/>
          <el-autocomplete :disabled="isReadOnly" :maxlength="200" v-if="suggestions" v-model="item.name" size="small"
                           :fetch-suggestions="querySearch" @change="change" :placeholder="keyText"
                           show-word-limit/>

        </el-col>
        <el-col>
          <el-input :disabled="isReadOnly" v-model="item.value" size="small" @change="change"
                    :placeholder="valueText" show-word-limit/>
        </el-col>
        <el-col class="kv-delete">
          <el-button size="mini" class="el-icon-delete-solid" circle @click="remove(index)"
                     :disabled="isDisable(index) || isReadOnly"/>
        </el-col>
      </el-row>
    </div>
  </div>
</template>

<script>
import {KeyValue} from "../model/ScenarioModel";

export default {
  name: "MsApiKeyValue",

  props: {
    keyPlaceholder: String,
    valuePlaceholder: String,
    description: String,
    items: Array,
    isReadOnly: {
      type: Boolean,
      default: false
    },
    suggestions: Array
  },

  computed: {
    keyText() {
      return this.keyPlaceholder || this.$t("api_test.key");
    },
    valueText() {
      return this.valuePlaceholder || this.$t("api_test.value");
    }
  },

  methods: {
    remove: function (index) {
      this.items.splice(index, 1);
      this.$emit('change', this.items);
    },
    change: function () {
      let isNeedCreate = true;
      let removeIndex = -1;
      this.items.forEach((item, index) => {
        if (!item.name && !item.value) {
          // 多余的空行
          if (index !== this.items.length - 1) {
            removeIndex = index;
          }
          // 没有空行，需要创建空行
          isNeedCreate = false;
        }
      });
      if (isNeedCreate) {
        this.items.push(new KeyValue());
      }
      this.$emit('change', this.items);
      // TODO 检查key重复
    },
    isDisable: function (index) {
      return this.items.length - 1 === index;
    },
    querySearch(queryString, cb) {
      let suggestions = this.suggestions;
      let results = queryString ? suggestions.filter(this.createFilter(queryString)) : suggestions;
      cb(results);
    },
    createFilter(queryString) {
      return (restaurant) => {
        return (restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0);
      };
    },
  },
  created() {
    if (this.items.length === 0) {
      this.items.push(new KeyValue());
    }
  }
}
</script>

<style scoped>
.kv-description {
  font-size: 13px;
}

.kv-row {
  margin-top: 10px;
}

.kv-delete {
  width: 60px;
}

.el-autocomplete {
  width: 100%;
}
</style>
