<?php
use Workerman\Worker;
use \Workerman\Connection\AsyncTcpConnection;
use Workerman\Connection\TcpConnection;
use Workerman\Protocols\Http\Request;
use Workerman\Protocols\Http\Response;
require_once __DIR__ . '/vendor/autoload.php';

use EdgeManager\EDataCapture\{ EDataCapture, ENodeConfigure };

$options = getopt('h::', ['server_name:', 'user:', 'password:', 'help::']);

init_db($options['server_name'], $options['user'], $options['password']);

$worker = new Worker('http://0.0.0.0:8888');
$worker -> name = 'EntryPoint';
$worker -> count = 20;

$worker -> onWorkerStart = function(Worker $worker) {
    global $options, $dbconn;

    $dbconn = pg_connect(sprintf(
        "host=%s dbname=scada user=%s password=%s",
        $options['server_name'], $options['user'], $options['password']
    ));
};

$worker -> onMessage = function(TcpConnection $connection, Request $request) {
    global $options, $dbconn;

    // 先预处理POST内容
    if ($request->header('content-type') === 'application/json') {
        $post = $request -> post();
        if (isset($post['action'])) {
            $post = json_decode(json_encode($post, JSON_PRESERVE_ZERO_FRACTION));
        }
    } else {
        $body = $request -> rawBody();
        if ($body === "") {
            $response = new Response(200, [
                'Content-Type' => 'application/json;charset=utf-8',
            ], "空请求！");
            $connection -> send($response);
        } else {
            $post = json_decode($request -> rawBody());
            if (json_last_error() !== JSON_ERROR_NONE) {
                $response = new Response(200, [
                    'Content-Type' => 'application/json;charset=utf-8',
                ], json_encode(array(
                    'action'    => '错得太离谱以至于我也不知道这是什么动作',
                    'errcode'   => 4001,
                    'errmsg'    => 'POST的内容不是JSON，也并非可按照JSON解析的字符串！或者检查一下你的JSON是不是有注释？'
                )));
                $connection -> send($response);
            }
        }
    }

    if (isset($post) and !(is_array($post) and count($post) === 0)) {
        // Axios：发送的POST是array
        if (isset($post -> action)) {
            if (str_ends_with($post -> action, 'node')) {
                // 用这种方式自动匹配调用和action相对应的方法
                // 因为pg_insert()不需要action字段
                $action = $post -> action;
                unset($post -> action);

                if ($action === 'add_node') {
                    $task_connection = new AsyncTcpConnection('Text://127.0.0.1:1888');
                    $task_data = array(
                        'action' => 'add_node',
                        'data'   => $post,
                    );
                    $task_connection -> send(json_encode($task_data));
                    $task_connection -> onMessage = function(AsyncTcpConnection $task_connection, $task_result) use ($connection) {
                        $task_connection -> close();
                        $connection -> send($task_result);
                    };
                    // 执行异步连接
                    $task_connection->connect();
                } else {
                    $enode_configure = new ENodeConfigure($dbconn, post: $post);
                    $res = $enode_configure -> $action();
                    
                    if ($res === true)
                        $connection -> send(json_encode(array(
                            'code'  => 0,
                            'msg'   => 'Success'
                        )));
                    else if ($res === false) {
                        $connection -> send(json_encode(array(
                            'code'  => 1,
                            'msg'   => '服务器内部逻辑错误，请联系开发者！'
                        )));
                    }
                }                
            } else if ($post -> action === 'set_node_data') {
                $data_capture = new EDataCapture($dbconn, post: $post);
                if ($data_capture -> check_res === 'WRONG_WORKING_SUBCLASS') {
                    $response = new Response(200, [
                        'Content-Type' => 'application/json;charset=utf-8',
                    ], json_encode(array(
                        'action' => 'result_set_node_data',
                        'errcode' => 4002,
                        'errmsg' => '未登记过的工序单元！'
                    )));
                    $connection -> send($response);
                } else if ($data_capture -> check_res === 'MISMATCH_TYPE') {
                    $response = new Response(200, [
                        'Content-Type' => 'application/json;charset=utf-8',
                    ], json_encode(array(
                        'action' => 'result_set_node_data',
                        'errcode' => 4002,
                        'errmsg' => '节点编码和数值类型不匹配！'
                    )));
                    $connection -> send($response);
                }
                $res = $data_capture -> set_node_data();
                if ($res === true) {
                    $connection -> send(json_encode(array(
                        'action' => 'result_set_node_data',
                        'errcode' => 0,
                        'errmsg' => ''
                    )));
                } else {
                    $connection -> send(json_encode(array(
                        'action' => 'result_set_node_data',
                        'errcode' => 4002,
                        'errmsg' => 'ROLLBACKed: Bad data received (structure and/or values)'
                    )));
                }
            } else {
                // 有action，但是不知道是什么鬼动作
                $response = new Response(200, [
                    'Content-Type' => 'application/json;charset=utf-8',
                ], json_encode(array(
                    'action' => $post -> action,
                    'errcode' => 4002,
                    'errmsg' => '乜Q action吖？同朕check check佢'
                )));
                $connection -> send($response);
            }
        } else {
            // action都无
            $response = new Response(200, [
                'Content-Type' => 'application/json;charset=utf-8',
            ], json_encode(array(
                'action' => '缺少action字段',
                'errcode' => 4001,
                'errmsg' => '你请求紧乜撚动作吖？'
            )));
            $connection -> send($response);
        }
    }

    $get = $request -> get();
    if (isset($get['query'])) {
        if ($get['query'] == 'nodes') {
            $enode_configure = new ENodeConfigure($dbconn, get: $get);
            $nodes = $enode_configure -> get_nodes();
            if (is_null($nodes))
                $connection -> send(json_encode(array(
                    'code'  => 1,
                    'msg'   => 'no node data yet'
                )));
            else
                $connection -> send(json_encode(array(
                    'code'  => 0,
                    'data'  => $nodes
                )));
        } else if ($get['query'] == 'working_subclasses') {
            $enode_configure = new ENodeConfigure($dbconn, get: $get);
            $working_subclasses = $enode_configure -> get_working_subclasses($dbconn);
            if (is_null($working_subclasses))
                $connection -> send(json_encode(array(
                    'code'  => 1,
                    'msg'   => '还没有工序单元！'
                )));
            else
                $connection -> send(json_encode(array(
                    'code'  => 0,
                    'data'  => $working_subclasses
                )));
        } else if ($get['query'] == 'codes') {
            $enode_configure = new ENodeConfigure($dbconn, get: $get);
            $codes = $enode_configure -> get_codes_by_working_subclasses();
            if (is_null($codes))
                $connection -> send(json_encode(array(
                    'code'  => 1,
                    'msg'   => '服务器内部逻辑错误，请联系开发者！'
                )));
            else
                $connection -> send(json_encode(array(
                    'code'  => 0,
                    'data'  => $codes
                )));
        } else if ($get['query'] == 'node_data') {
            $data_capture = new EDataCapture($dbconn, get: $get);
            $data = $data_capture -> get_node_data();
            if (is_null($data))
                $connection -> send(json_encode(array(
                    'code'  => 1,
                    'msg'   => '服务器内部逻辑错误，请联系开发者！'
                )));
            else if ($data === "TOO_MANY")
                $connection -> send(json_encode(array(
                    'code'  => 1,
                    'msg'   => '结果太多（超过二百万条），请收紧查询条件！'
                )));
            else
                $connection -> send(json_encode(array(
                    'code'  => 0,
                    'data'  => $data
                )));
        } else {
            $connection -> send(json_encode(array(
                'code'  => 1,
                'msg'   => '你请求紧乜撚嘢啊？'
            )));
        }
    }
};

$consumer = new Worker('Text://0.0.0.0:1888');
$consumer -> name = 'Consumer';

$consumer -> onWorkerStart = function(Worker $consumer) {
    global $options, $consumer_dbconn;

    $consumer_dbconn = pg_connect(sprintf(
        "host=%s dbname=scada user=%s password=%s",
        $options['server_name'], $options['user'], $options['password']
    ));
};

$consumer -> onMessage = function(TcpConnection $connection, $task_data) {
    global $consumer_dbconn;

    $task_data = json_decode($task_data);

    if ($task_data -> action === 'add_node') {
        $enode_configure = new ENodeConfigure($consumer_dbconn, post: $task_data -> data);
        $res = $enode_configure -> add_node();
    
        if ($res === true)
            $connection -> send(json_encode(array(
                'code'  => 0,
                'msg'   => 'Success'
            )));
        else if ($res === "REPLICATED")
            $connection -> send(json_encode(array(
                'code'  => 1,
                'msg'   => '同一工序单元内的节点编码不可重复！'
            )));
        else if ($res === false) {
            $connection -> send(json_encode(array(
                'code'  => 1,
                'msg'   => '服务器内部逻辑错误，请联系开发者！'
            )));
        }
    }
};

Worker::runAll();