<?php

$app = $GLOBALS["ColdHazeApp"];
$user = $_GET['user'] ?? null;
$inputJSON = file_get_contents('php://input');
$input = json_decode($inputJSON, true);
$data = $GLOBALS["ColdHazeApp"]["webhook"];

function random($length = 13): string {
    if (function_exists("random_bytes")) {
        $bytes = random_bytes(ceil($length / 2));
    } elseif (function_exists("openssl_random_pseudo_bytes")) {
        $bytes = openssl_random_pseudo_bytes(ceil($length / 2));
    } else {
        throw new Exception("No cryptographically secure random function available");
    }
    return substr(bin2hex($bytes), 0, $length);
}

function createJob($title, $options): void {
    $job = [
        "name" => $title,
        "options" => $options,
        "date" => date('c')
    ];

    file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/data/jobs/" . round(microtime(true) * 1000000) . "-" . random() . ".json", json_encode($job));
}

if ($user === null) {
    header("HTTP/1.1 500 Internal Server Error") and die();
}

if (!in_array($user, array_keys($data))) {
    header("HTTP/1.1 404 Not Found") and die();
}

if ($input["signing_token"] !== $data[$user]) {
    header("HTTP/1.1 401 Unauthorized") and die();
}

if ($input['system_id'] === "7d9f543e-f742-40f6-9d07-86c3f2983124") {
    $system = "gdapd";
    $name = "Raindrops System";
} elseif ($input['system_id'] === "d1cd97eb-9c92-4e42-94cd-4397a5074ff9") {
    $system = "hrbom";
    $name = "Moonglow";
} elseif (isset($app["other"]) && $input["system_id"] === $app["other"]["uuid"]) {
    $system = $app["other"]["id"];
    $name = $app["other"]["name"];
} else {
    die();
}

$lastFronter = json_decode(@file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/data/$system/last.json"), true) ?? "";

if ($input["type"] === "CREATE_MEMBER" || $input["type"] === "UPDATE_MEMBER" || $input["type"] === "DELETE_MEMBER") {
    createJob("PKMembers", [
        "system" => $system
    ]);
}

if ($input["type"] === "UPDATE_SYSTEM") {
    createJob("PKSystem", [
        "system" => $system
    ]);
}

if ($input["type"] === "CREATE_SWITCH" || $input["type"] === "UPDATE_SWITCH" || $input["type"] === "DELETE_SWITCH") {
    createJob("PKFronters", [
        "system" => $system
    ]);
    createJob("PKSwitches", [
        "system" => $system
    ]);
    createJob("FrontersNotification", [
        "system" => $system
    ]);
}