<?php
namespace EdgeManager\EDataCapture;

class EDataCapture {
    // 我不主张在构造函数内实现类型检查，因为在请求过于密集、记录较多时会严重影响性能
    // 请使用SCADA系统的开发人员自觉遵守文档内规范
    function __construct(
        protected $dbconn,
        protected $post = NULL,
        protected $get = NULL
    ) {}

    function set_node_data() {
        foreach (array_chunk($this -> post -> param -> data, 6710885, true) as $chunk) {
            $sql_head = sprintf(
                "INSERT INTO hf_mes_scada_data_capture_node_data_%s (code, v_%s, device_code, batch)
                VALUES",
                $this -> post -> param -> working_subclass,
                $this -> post -> param -> type
            );
            foreach ($chunk as $row) {
                $sql_values[] = sprintf(
                    "('%s', %s, %s, %s)",
                    $row -> code,
                    $row -> value,
                    $row -> device_code ?? 'DEFAULT',
                    $row -> batch ?? 'DEFAULT'
                );
            }
            return pg_query($this -> dbconn, $sql_head . implode(',', $sql_values));
        }
    }

    function get_node_data() {
        $name_type = pg_fetch_assoc(pg_query($this -> dbconn, sprintf(
            "SELECT name, type
            FROM hf_mes_scada_data_capture_node_configure
            WHERE working_subclass = '%s'
            AND code = '%s'",
            $this -> get['working_subclass'],
            $this -> get['code']
        )));
        
        $res = pg_fetch_all(pg_query($this -> dbconn, sprintf(
            "SELECT id, v_%s AS value, device_code, batch, capture_time
            FROM hf_mes_scada_data_capture_node_data_%s
            WHERE code = '%s'",
            $name_type['type'],
            $this -> get['working_subclass'],
            $this -> get['code']
        )));

        array_walk($res, function(&$v, $k) use ($name_type) {
            $v['name'] = $name_type['name'];
        });

        return $res;
    }
}