<?php

/**
 * WKVS Automated Environment Initialization Script
 * Auto-creates missing config/.env files from .example templates
 * and configures them with valid Docker container hostnames and default dev credentials.
 */

$configDir = dirname(__DIR__) . '/config';

$envMappings = [
    'env.redis' => [
        'example' => 'env.redis.example',
        'replacements' => [
            '/REDDIS_HOST=127\.0\.0\.1/' => 'REDDIS_HOST=redis',
            '/REDDIS_HOST=localhost/' => 'REDDIS_HOST=redis',
            '/REDDIS_HOST=YOUR_REDDIS_IP.*/' => 'REDDIS_HOST=redis',
            '/REDDIS_PORT=YOUR_REDDIS_PORT.*/' => 'REDDIS_PORT=6379',
            '/YOUR_REDDIS_PASSWORD/' => '"' . base64_encode(random_bytes(64)) . '"',
        ]
    ],
    'env.db' => [
        'example' => 'env.db.example',
        'replacements' => [
            '/MYSQL_HOST=localhost/' => 'MYSQL_HOST=mariadb',
            '/MYSQL_HOST=127\.0\.0\.1/' => 'MYSQL_HOST=mariadb',
            '/YOUR_PASSWORD_FOR_ROOT/' => '"' . base64_encode(random_bytes(64)) . '"',
            '/YOUR_DATABASE_NAME/' => 'devdb_',
        ]
    ],
    'env.db-tables' => [
        'example' => 'env.db-tables.example',
        'replacements' => [
            '/DB_PREFIX=PREFIX/' => 'DB_PREFIX=wkvs_',
        ]
    ],
    'env.pw-encryption-key' => [
        'example' => 'env.pw-encryption-key.example',
        'replacements' => [
            '/YOUR_CUSTOM_PASSWORD_ENCRYPTION_KEY/' =>  '"' . base64_encode(random_bytes(64)) . '"',
        ]
    ],
    'env.wk-id' => [
        'example' => 'env.wk-id.example',
        'replacements' => []
    ],
    'env.db-wkvs-user' => [
        'example' => 'env.db-wkvs-user.example',
        'replacements' => [
            '/DB_HOST=localhost/' => 'DB_HOST=mariadb',
            '/DB_HOST=127\.0\.0\.1/' => 'DB_HOST=mariadb',
            '/DATABASE_NAME/' => 'devdb_',
        ]
    ],
    'env.db-guest' => [
        'example' => 'env.db-guest.example',
        'replacements' => [
            '/DB_HOST=localhost/' => 'DB_HOST=mariadb',
            '/DB_HOST=127\.0\.0\.1/' => 'DB_HOST=mariadb',
            '/DATABASE_NAME/' => 'devdb_',
        ]
    ],
];

echo "========================================\n";
echo "  WKVS Environment Initializer          \n";
echo "========================================\n\n";

foreach ($envMappings as $targetName => $config) {
    $targetPath  = $configDir . '/.' . $targetName;
    $examplePath = $configDir . '/.' . $config['example'];

    if (!file_exists($targetPath)) {
        if (file_exists($examplePath)) {
            echo "Creating missing ." . $targetName . " from ." . $config['example'] . "...\n";
            $content = file_get_contents($examplePath);
            foreach ($config['replacements'] as $pattern => $replacement) {
                $content = preg_replace($pattern, $replacement, $content);
            }
            file_put_contents($targetPath, $content);
        } else {
            echo "⚠️ Warning: Example file ." . $config['example'] . " not found.\n";
        }
    } else {
        echo "Skipping ." . $targetName . " (file already exists).\n";
    }
}

echo "✓ Environment initialization complete.\n\n";