<?php
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/config.php';
require_once dirname(__DIR__) . '/include/confform.php';
require_once dirname(__DIR__) . '/include/common.php';

$action = $_GET['action'] ?? $_POST['action'] ?? '';

// ── Script library — all .sh files grouped by folder ─────────────────────────
if ($action === 'list_scripts') {
    $base    = rtrim(SCRIPTS_DIR, '/') . '/';
    $exclude = ['Plugin', '.git', 'Orchestrators', 'Custom', 'Configurations',
                'Deployment', 'State_Files', 'data', 'Old_Arch_Still_Works', 'Kernel'];
    $groups  = [];
    try {
        $ri = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator(SCRIPTS_DIR, RecursiveDirectoryIterator::SKIP_DOTS)
        );
        foreach ($ri as $rf) {
            if (!$rf->isFile() || strtolower($rf->getExtension()) !== 'sh') continue;
            $rel    = ltrim(str_replace($base, '', $rf->getPathname()), '/');
            $parts  = explode('/', $rel);
            if (count($parts) < 2 || in_array($parts[0], $exclude)) continue;
            $folder = $parts[0];
            $label  = str_replace('_', ' ', basename($rel, '.sh'));
            $groups[$folder][] = ['id' => $rel, 'label' => $label];
        }
    } catch (Exception $e) {}
    ksort($groups);
    foreach ($groups as &$g) usort($g, fn($a, $b) => strcmp($a['id'], $b['id']));
    echo json_encode(['ok' => true, 'groups' => $groups]);
    exit;
}

// ── Profile names from master.conf ────────────────────────────────────────────
if ($action === 'list_profiles') {
    $raw = vv_read_conf_raw('master.conf');
    preg_match_all('/^\s*PROFILE_([A-Z0-9_]+)_RSYNC_OPTS\s*=/m', $raw, $m);
    $profiles = array_values(array_unique(
        array_map(fn($n) => strtolower(str_replace('_', '-', $n)), $m[1] ?? [])
    ));
    echo json_encode(['ok' => true, 'profiles' => $profiles]);
    exit;
}

// ── Save scripts + shares for a window ───────────────────────────────────────
if ($action === 'save' && $_SERVER['REQUEST_METHOD'] === 'POST') {
    $winKey  = trim($_POST['win_key'] ?? '');
    $scripts = json_decode($_POST['scripts'] ?? 'null', true);
    $shares  = json_decode($_POST['shares']  ?? 'null', true);

    $winMap = [
        'critical'     => ['CRITICAL_MAINTENANCE_SCRIPTS',     'CRITICAL_SYNC_SHARES'],
        'intermediate' => ['INTERMEDIATE_MAINTENANCE_SCRIPTS', 'INTERMEDIATE_SYNC_SHARES'],
        'daily'        => ['DAILY_MAINTENANCE_SCRIPTS',        'DAILY_SYNC_SHARES'],
        'weekly'       => ['WEEKLY_MAINTENANCE_SCRIPTS',       'WEEKLY_SYNC_SHARES'],
    ];

    if (!isset($winMap[$winKey])) {
        echo json_encode(['ok' => false, 'error' => 'Invalid window']); exit;
    }

    [$scriptsVar, $sharesBase] = $winMap[$winKey];
    $myId      = strtoupper(vv_detect_host());
    $sharesVar = "{$myId}_{$sharesBase}";
    $errors    = [];

    // ── Scripts → master.conf ─────────────────────────────────────────────────
    if (is_array($scripts)) {
        $confPath = CONF_DIR . '/master.conf';
        $lines    = file($confPath, FILE_KEEP_BLANK_LINES) ?: [];
        $esc      = preg_quote($scriptsVar, '/');
        $blockStart = $blockEnd = null;
        $depth      = 0;
        $origLines  = [];

        foreach ($lines as $i => $line) {
            if ($blockStart === null) {
                if (preg_match('/^\s*' . $esc . '\s*=\s*\(/', $line)) { $blockStart = $i; $depth = 1; }
                continue;
            }
            $depth += substr_count($line, '(') - substr_count($line, ')');
            if ($depth <= 0) { $blockEnd = $i; break; }
            if (preg_match('/^\s*(?:#\s*)?"([^"]+)"/', $line, $m)) {
                $path = explode(' ', trim($m[1]))[0];
                if (str_ends_with($path, '.sh') && !isset($origLines[$path]))
                    $origLines[$path] = '"' . $m[1] . '"';
            }
        }

        if ($blockStart !== null && $blockEnd !== null) {
            $newBlock = [$lines[$blockStart]];
            foreach ($scripts as $item) {
                $id      = trim((string)($item['id'] ?? ''));
                $enabled = !isset($item['enabled']) || (bool)$item['enabled'];
                if (!$id || str_contains($id, '..') || !preg_match('/^[A-Za-z0-9_.\-\/]+\.sh$/', $id)) continue;
                $entry      = $origLines[$id] ?? '"' . $id . '"';
                $prefix     = $enabled ? '        ' : '        #';
                $newBlock[] = $prefix . $entry . "\n";
            }
            $newBlock[] = $lines[$blockEnd];
            array_splice($lines, $blockStart, $blockEnd - $blockStart + 1, $newBlock);
            if (file_put_contents($confPath, implode('', $lines)) === false) $errors[] = 'scripts write failed';
        } else {
            $errors[] = "Array $scriptsVar not found in master.conf";
        }
    }

    // ── Shares → host*.conf ───────────────────────────────────────────────────
    if (is_array($shares)) {
        $confFile = strtolower($myId) . '.conf';
        $inner    = '';
        foreach ($shares as $item) {
            $path    = trim((string)($item['path']    ?? ''));
            $profile = trim((string)($item['profile'] ?? ''));
            if (!$path || str_contains($path, '..') || !str_starts_with($path, '/')) continue;
            $val    = $profile ? "{$path}|{$profile}" : $path;
            $inner .= '        "' . $val . '"' . "\n";
        }
        $results = vv_conf_write_changes([[
            'file'  => $confFile,
            'key'   => $sharesVar,
            'value' => rtrim($inner),
            'type'  => 'array',
        ]]);
        if (in_array(false, $results, true)) $errors[] = 'shares write failed';
    }

    echo json_encode(['ok' => empty($errors), 'errors' => $errors]);
    exit;
}

echo json_encode(['ok' => false, 'error' => 'Unknown action']);