<?php

use App\Services\HousekeepingPermissionsService;
use App\Services\PermissionsService;
use App\Services\SettingsService;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Schema;

if (! function_exists('setting')) {
    function setting(string $setting): string
    {
        return app(SettingsService::class)->getOrDefault($setting);
    }
}

if (! function_exists('isDarkColor')) {
    function isDarkColor(?string $hex): bool
    {
        if (! is_string($hex)) {
            return false;
        }
        $hex = trim($hex);
        if (! preg_match('/^#?[0-9a-fA-F]{6}$/', $hex)) {
            return false;
        }
        $hex = ltrim($hex, '#');
        $r = hexdec(substr($hex, 0, 2));
        $g = hexdec(substr($hex, 2, 2));
        $b = hexdec(substr($hex, 4, 2));
        $luminance = (0.2126 * $r + 0.7152 * $g + 0.0722 * $b) / 255;
        return $luminance < 0.5;
    }
}

if (! function_exists('hasPermission')) {
    function hasPermission(string $permission): bool
    {
        $value = app(PermissionsService::class)->getOrDefault($permission);
        return $value === true || $value === 1 || $value === '1';
    }
}

if (! function_exists('hasHousekeepingPermission')) {
    function hasHousekeepingPermission(string $permission): bool
    {
        $value = app(HousekeepingPermissionsService::class)->getOrDefault($permission);
        return $value === true || $value === 1 || $value === '1';
    }
}

if (! function_exists('strLimit')) {
    function strLimit(string $string, int $limit, string $replacement = '...'): string
    {
        return Str::limit($string, $limit, $replacement);
    }
}

if (! function_exists('findMigration')) {
    function findMigration(string $tableName): string
    {
        static $cache = [];

        if (isset($cache[$tableName])) {
            return $cache[$tableName];
        }

        $migrationsPath = database_path('migrations');
        if (! is_dir($migrationsPath)) {
            return '';
        }

        try {
            $files = new \DirectoryIterator($migrationsPath);
            foreach ($files as $file) {
                if ($file->isFile() && $file->getExtension() === 'php') {
                    $content = @file_get_contents($file->getPathname());
                    if ($content !== false && str_contains($content, "Schema::create('$tableName'")) {
                        $cache[$tableName] = $file->getFilename();
                        return $file->getFilename();
                    }
                }
            }
        } catch (\Exception $e) {
            \Illuminate\Support\Facades\Log::error("Error finding migration for table {$tableName}: {$e->getMessage()}");
        }

        $cache[$tableName] = '';
        return '';
    }
}

if (! function_exists('columnExists')) {
    function columnExists(string $table, string $column): bool
    {
        return Schema::hasColumn($table, $column);
    }
}

if (! function_exists('dropForeignKeyIfExists')) {
    function dropForeignKeyIfExists(string $table, string $column): void
    {
        $connection = Schema::getConnection();
        $tableWithPrefix = $connection->getTablePrefix() . $table;

        $foreignKeys = collect($connection->select('SELECT CONSTRAINT_NAME
            FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
            WHERE TABLE_SCHEMA = DATABASE()
            AND TABLE_NAME = ?
            AND COLUMN_NAME = ?', [$tableWithPrefix, $column]))
            ->pluck('CONSTRAINT_NAME');

        foreach ($foreignKeys as $foreignKey) {
            if (! empty($foreignKey)) {
                $connection->statement("ALTER TABLE {$table} DROP FOREIGN KEY {$foreignKey}");
            }
        }
    }
}