<?php
require_once __DIR__ . '/../../db/config.php';

$pdo = db();

try {
    // 1. Create permissions table
    $pdo->exec("
        CREATE TABLE IF NOT EXISTS permissions (
            id INT AUTO_INCREMENT PRIMARY KEY,
            slug VARCHAR(100) NOT NULL UNIQUE,
            name VARCHAR(100) NOT NULL,
            description TEXT NULL,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    ");

    // 2. Create user_permissions table
    $pdo->exec("
        CREATE TABLE IF NOT EXISTS user_permissions (
            user_id INT NOT NULL,
            permission_id INT NOT NULL,
            PRIMARY KEY (user_id, permission_id),
            FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
            FOREIGN KEY (permission_id) REFERENCES permissions(id) ON DELETE CASCADE
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
    ");

    // 3. Seed default permissions
    $permissions = [
        ['slug' => 'manage_platform_users', 'name' => 'Manage Platform Users', 'description' => 'Create and manage admin users and their permissions.'],
        ['slug' => 'manage_shippers', 'name' => 'Manage Shippers', 'description' => 'View, approve, and edit shipper accounts.'],
        ['slug' => 'manage_truck_owners', 'name' => 'Manage Truck Owners', 'description' => 'View, approve, and edit truck owner accounts.'],
        ['slug' => 'manage_shipments', 'name' => 'Manage Shipments', 'description' => 'View and edit shipments.'],
        ['slug' => 'manage_content', 'name' => 'Manage Content', 'description' => 'Edit FAQs, Landing Pages, and other content.'],
        ['slug' => 'manage_settings', 'name' => 'Manage Settings', 'description' => 'Edit global application settings.'],
        ['slug' => 'view_reports', 'name' => 'View Reports', 'description' => 'Access dashboard reports and statistics.']
    ];

    $stmtInsert = $pdo->prepare("INSERT IGNORE INTO permissions (slug, name, description) VALUES (:slug, :name, :description)");
    
    foreach ($permissions as $perm) {
        $stmtInsert->execute($perm);
    }

    // 4. Assign all permissions to existing admins
    // First, get all permission IDs
    $stmtPerms = $pdo->query("SELECT id FROM permissions");
    $allPermIds = $stmtPerms->fetchAll(PDO::FETCH_COLUMN);

    // Get all admin users
    $stmtAdmins = $pdo->query("SELECT id FROM users WHERE role = 'admin'");
    $adminIds = $stmtAdmins->fetchAll(PDO::FETCH_COLUMN);

    $stmtAssign = $pdo->prepare("INSERT IGNORE INTO user_permissions (user_id, permission_id) VALUES (:uid, :pid)");

    foreach ($adminIds as $uid) {
        foreach ($allPermIds as $pid) {
            $stmtAssign->execute(['uid' => $uid, 'pid' => $pid]);
        }
    }

    echo "Permissions tables created and seeded successfully.";

} catch (PDOException $e) {
    echo "Error: " . $e->getMessage();
}