<?php
// Config file parser and writer.
// Reads master.conf and the appropriate host*.conf based on running host.

define('PLUGIN_CFG',  '/boot/config/plugins/varaverk/varaverk.cfg');

$_vv_cfg = @parse_ini_file(PLUGIN_CFG) ?: [];
define('SCRIPTS_DIR', $_vv_cfg['SCRIPTS_DIR'] ?? '/mnt/user/appdata/unraid_scripts');
define('CONF_DIR',    SCRIPTS_DIR . '/Configurations');
unset($_vv_cfg);

function vv_get_hostname(): string {
    return trim(shell_exec('hostname -s') ?: '');
}

function vv_detect_host(): string {
    // Reads master.conf to find HOST1/HOST2 hostnames, returns 'host1', 'host2', or 'unknown'
    $master = vv_read_conf_raw('master.conf');
    preg_match('/^\s*HOST1_NAME\s*=\s*["\']?(\S+?)["\']?\s*$/m', $master, $m1);
    preg_match('/^\s*HOST2_NAME\s*=\s*["\']?(\S+?)["\']?\s*$/m', $master, $m2);
    $hostname = vv_get_hostname();
    if (!empty($m1[1]) && strcasecmp($hostname, $m1[1]) === 0) return 'host1';
    if (!empty($m2[1]) && strcasecmp($hostname, $m2[1]) === 0) return 'host2';
    return 'unknown';
}

function vv_is_owner(): bool {
    return vv_detect_host() === 'host1';
}

function vv_read_conf_raw(string $filename): string {
    $path = CONF_DIR . '/' . $filename;
    return file_exists($path) ? file_get_contents($path) : '';
}

function vv_write_conf_raw(string $filename, string $content): bool {
    $path = CONF_DIR . '/' . $filename;
    return file_put_contents($path, $content) !== false;
}

function vv_get_conf_files(): array {
    // Returns conf files this host is allowed to view/edit
    $host = vv_detect_host();
    $files = [];
    if ($host === 'host1') {
        $files[] = 'master.conf';
        $files[] = 'host1.conf';
    } elseif ($host === 'host2') {
        $files[] = 'host2.conf';
    } else {
        // Unknown host — show all for dev/debug
        foreach (glob(CONF_DIR . '/*.conf') as $f) {
            $files[] = basename($f);
        }
    }
    return $files;
}

// Parse conf into key=>value map for $VAR substitution in docs
function vv_conf_vars(): array {
    $vars = [];
    $files = ['master.conf'];
    $host  = vv_detect_host();
    if ($host === 'host1') $files[] = 'host1.conf';
    if ($host === 'host2') $files[] = 'host2.conf';

    foreach ($files as $f) {
        $raw = vv_read_conf_raw($f);
        // Match: VAR_NAME="value" or VAR_NAME=value (no quotes)
        preg_match_all('/^\s*([A-Z0-9_]+)\s*=\s*["\']?([^"\'#\n]*?)["\']?\s*(?:#.*)?$/m', $raw, $m);
        foreach ($m[1] as $i => $key) {
            $vars[$key] = trim($m[2][$i]);
        }
    }
    return $vars;
}