<template>
  <div class="container-custom">
    <div class="wrapper_1260">
      <div class="pagination_box">
        <b-pagination-nav 
          size="lg" 
          v-model="currentPage"
          :link-gen="linkGen" 
          :number-of-pages="numberOfPages" 
          use-router>
        </b-pagination-nav>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: "seo-pagination",
  data() {
    return {
      currentPage: 1,
      queryStr: ''
    };
  },
  props: {
    total: {
      default: 99
    },
    pageNum : {
      default: 1
    },
    rows: {
      default: 10
    },
    pageKey: {
      type: String,
      default: 'pageNum'
    },
  },
  watch: {
    '$route': {
      handler(val) {
        this.currentPage = val.query[this.pageKey] || 1
        for (let key in val.query) {
          if (key!==this.pageKey) {
            this.queryStr = `${this.queryStr}&${key}=${val.query[key]}`
          }
        }
      },
      deep: true,
      immediate: true
    }
  },
  computed: {
    numberOfPages() {
      if (!this.total) {
        return 1
      }
      return Math.ceil(this.total / this.rows)
    }
  },
  methods: {
    linkGen(pageNum) {
      return `?${this.pageKey}=${pageNum}${this.queryStr || ''}`
    },
  },
};
</script>

<style scoped lang="scss">
.container-custom {
  background-color: transparent !important;
}
.pagination_box {
  width: 100%;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  .total_box {
    margin-right: 15px;
    color: #606266;
    font-size: 14px;
  }
  >nav {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  ::v-deep .el-input {
    width: 70px;
    margin: 0 4px;
  }
}
</style>
