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

try {
    $pdo = db();

    // Alter table engine to InnoDB
    $pdo->exec("ALTER TABLE scores ENGINE=InnoDB");
    echo "Table 'scores' engine converted to InnoDB.<br>";

    // Check if player_id column exists
    $stmt = $pdo->query("SHOW COLUMNS FROM scores LIKE 'player_id'");
    if ($stmt->rowCount() == 0) {
        // Add player_id column
        $pdo->exec("ALTER TABLE scores ADD COLUMN player_id INT NOT NULL AFTER course_id");

        // Add foreign key constraint
        $pdo->exec("ALTER TABLE scores ADD FOREIGN KEY (player_id) REFERENCES players(id)");

        echo "Column 'player_id' added to 'scores' table and foreign key created.<br>";
    } else {
        echo "Column 'player_id' already exists in 'scores' table.<br>";
    }

    // Check if team_id column exists
    $stmt = $pdo->query("SHOW COLUMNS FROM scores LIKE 'team_id'");
    if ($stmt->rowCount() == 0) {
        // Add team_id column
        $pdo->exec("ALTER TABLE scores ADD COLUMN team_id INT NOT NULL AFTER player_id");

        // Add foreign key constraint
        $pdo->exec("ALTER TABLE scores ADD FOREIGN KEY (team_id) REFERENCES teams(id)");

        echo "Column 'team_id' added to 'scores' table and foreign key created.<br>";
    } else {
        echo "Column 'team_id' already exists in 'scores' table.<br>";
    }

    // Safely remove player_name and team_name if they exist
    $stmt = $pdo->query("SHOW COLUMNS FROM scores LIKE 'player_name'");
    if ($stmt->rowCount() > 0) {
        $pdo->exec("ALTER TABLE scores DROP COLUMN player_name");
        echo "Column 'player_name' removed from 'scores' table.<br>";
    }

    $stmt = $pdo->query("SHOW COLUMNS FROM scores LIKE 'team_name'");
    if ($stmt->rowCount() > 0) {
        $pdo->exec("ALTER TABLE scores DROP COLUMN team_name");
        echo "Column 'team_name' removed from 'scores' table.<br>";
    }


} catch (PDOException $e) {
    die("DB ERROR: " . $e->getMessage());
}
?>