<?php

use think\migration\Migrator;

/**
 * nginx 日志分析 - 按 URL 聚合统计表
 *
 * 每个统计日 + URI 一行，记录 PV/UV/流量/平均耗时，用于热门 URL 排行。
 */
class NginxStatUrl extends Migrator
{
    public function change()
    {
        $table = $this->table('nginx_stat_url')
            ->setComment('nginx 按 URL 聚合统计')
            ->addColumn('stat_date', 'integer', ['limit' => 11, 'null' => false, 'comment' => '统计日期(YYYYMMDD)', 'signed' => false])
            ->addColumn('uri', 'string', ['limit' => 255, 'null' => false, 'comment' => '请求 URI'])
            ->addColumn('pv', 'integer', ['limit' => 11, 'default' => 0, 'comment' => '页面浏览量'])
            ->addColumn('uv', 'integer', ['limit' => 11, 'default' => 0, 'comment' => '独立访客数'])
            ->addColumn('total_bytes', 'biginteger', ['default' => 0, 'comment' => '总流量(字节)'])
            ->addColumn('avg_request_time', 'decimal', ['precision' => 10, 'scale' => 3, 'default' => 0, 'comment' => '平均请求耗时(秒)'])
            ->addIndex(['stat_date', 'uri'], ['unique' => true, 'name' => 'uniq_date_uri'])
            ->addIndex(['stat_date'], ['name' => 'idx_stat_date'])
            ->create();
    }
}