<?php

declare(strict_types=1);

function dev_required_env(string $name): string
{
    $value = getenv($name);
    if ($value === false || trim($value) === '') {
        fwrite(STDERR, "Missing environment variable: {$name}\n");
        exit(1);
    }

    return $value;
}

function dev_pdo(): PDO
{
    $dsn = sprintf(
        'mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4',
        dev_required_env('DB_HOST'),
        getenv('DB_PORT') ?: '3306',
        dev_required_env('DB_NAME')
    );

    return new PDO($dsn, dev_required_env('DB_USER'), dev_required_env('DB_PASS'), [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        PDO::ATTR_EMULATE_PREPARES => true,
    ]);
}

function dev_apply_schema(PDO $pdo): void
{
    $schema = file_get_contents(__DIR__ . '/../database/mysql-dev-schema.sql');
    if ($schema === false) {
        fwrite(STDERR, "Could not read schema file.\n");
        exit(1);
    }

    $pdo->exec($schema);
}