<?php
/* Copyright (C) 2021  Alexander Rosenberg
 * This file is AGPL v3. See LICENSE file for more information
 */
const CONFIG_PATH = 'config.json';

function display_error_message($msg, $html_tags = '') {
    echo '<div ' . $html_tags . ' class=".error-message">' . htmlspecialchars($msg, ENT_QUOTES | ENT_HTML5) . '</div>';
}

$LIBRARY_INFO = [];

function read_global_config() {
    if (!file_exists(CONFIG_PATH)) {
        display_error_message('Could not find config file!');
        exit(0);
    }
    $config_text = file_get_contents(CONFIG_PATH);
    if ($config_text == null) {
        display_error_message('Could not read config file!');
        exit(0);
    }
    $config_json = json_decode($config_text);
    if ($config_json == null) {
        display_error_message(json_last_error_msg() . '! Could not decode config file!');
        exit(0);
    }
    $library_name = $config_json->{'library_name'};
    if ($library_name == null) {
        $library_name = "An Unknown Person's Library";
    }
    $library_albums = $config_json->{'albums'};
    if ($library_albums == null) {
        $library_albums = [];
    }
    $photos_license = $config_json->{'license'};
    if ($photos_license == null) {
        $photos_license = "Photos may be copyrighted content";
    } else {
        $photos_license = "Photos are " . $photos_license;
    }
    global $LIBRARY_INFO;
    $LIBRARY_INFO = [
        'name' => $library_name,
        'albums' => $library_albums,
        'license' => $photos_license
    ];
}

read_global_config();
?>