<?php
// This script sets up the database tables and seeds them with initial data.

require_once __DIR__ . '/config.php';

function setup_database() {
    try {
        $pdo = db();

        // Create sessions table if it doesn't exist
        $pdo->exec("CREATE TABLE IF NOT EXISTS sessions (
            id INT AUTO_INCREMENT PRIMARY KEY,
            time VARCHAR(255) NOT NULL,
            title VARCHAR(255) NOT NULL,
            speaker VARCHAR(255) NOT NULL,
            description TEXT
        )");

        // Create speakers table if it doesn't exist
        $pdo->exec("CREATE TABLE IF NOT EXISTS speakers (
            id INT AUTO_INCREMENT PRIMARY KEY,
            name VARCHAR(255) NOT NULL,
            bio TEXT,
            photo_url VARCHAR(255),
            slug VARCHAR(255) UNIQUE NOT NULL
        )");

        // Check if sessions table is empty
        $stmt = $pdo->query("SELECT COUNT(*) FROM sessions");
        $count = $stmt->fetchColumn();

        if ($count == 0) {
            // Schedule data to insert
            $seed_schedule = [
                [
                    'time' => '9:00 AM - 10:00 AM',
                    'title' => 'Opening Keynote',
                    'speaker' => 'Jane Doe',
                    'description' => 'A look at the future of web development and the latest trends in the industry.'
                ],
                [
                    'time' => '10:15 AM - 11:15 AM',
                    'title' => 'The Power of Modern PHP',
                    'speaker' => 'John Smith',
                    'description' => 'Exploring the new features of PHP 8 and how to write more efficient and readable code.'
                ],
                [
                    'time' => '11:30 AM - 12:30 PM',
                    'title' => 'Frontend Magic with Vanilla JS',
                    'speaker' => 'Emily White',
                    'description' => 'Building interactive and dynamic user interfaces without the need for heavy frameworks.'
                ],
                [
                    'time' => '1:30 PM - 2:30 PM',
                    'title' => 'Securing Your Web Applications',
                    'speaker' => 'Michael Brown',
                    'description' => 'Best practices for protecting your applications from common vulnerabilities.'
                ]
            ];

            $stmt = $pdo->prepare("INSERT INTO sessions (time, title, speaker, description) VALUES (:time, :title, :speaker, :description)");
            foreach ($seed_schedule as $item) {
                $stmt->execute($item);
            }
        }

        // Check if speakers table is empty
        $stmt = $pdo->query("SELECT COUNT(*) FROM speakers");
        $count = $stmt->fetchColumn();

        if ($count == 0) {
            // Speaker data to insert
            $seed_speakers = [
                [
                    'name' => 'Jane Doe',
                    'bio' => 'Jane Doe is a renowned expert in web development with over 15 years of experience. She is a frequent speaker at international conferences and has authored several books on the subject.',
                    'photo_url' => 'https://i.pravatar.cc/150?u=jane_doe',
                    'slug' => 'jane-doe'
                ],
                [
                    'name' => 'John Smith',
                    'bio' => 'John Smith is a core contributor to the PHP language and has been instrumental in its recent developments. He is passionate about open source and loves to share his knowledge with the community.',
                    'photo_url' => 'https://i.pravatar.cc/150?u=john_smith',
                    'slug' => 'john-smith'
                ],
                [
                    'name' => 'Emily White',
                    'bio' => 'Emily White is a frontend developer who specializes in creating beautiful and performant user interfaces. She is a strong advocate for web standards and accessibility.',
                    'photo_url' => 'https://i.pravatar.cc/150?u=emily_white',
                    'slug' => 'emily-white'
                ],
                [
                    'name' => 'Michael Brown',
                    'bio' => 'Michael Brown is a security researcher and ethical hacker. He has helped numerous companies secure their web applications and is a regular trainer at security bootcamps.',
                    'photo_url' => 'https://i.pravatar.cc/150?u=michael_brown',
                    'slug' => 'michael-brown'
                ]
            ];

            $stmt = $pdo->prepare("INSERT INTO speakers (name, bio, photo_url, slug) VALUES (:name, :bio, :photo_url, :slug)");
            foreach ($seed_speakers as $speaker) {
                $stmt->execute($speaker);
            }
        }

    } catch (PDOException $e) {
        // In a real app, log this error and show a generic message
        die('DB Setup Error: ' . $e->getMessage());
    }
}

setup_database();