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

try {
    $db = db();
    $sql = <<<SQL
CREATE TABLE IF NOT EXISTS candlestick_data (
    id INT AUTO_INCREMENT PRIMARY KEY,
    symbol VARCHAR(20) NOT NULL,
    exchange VARCHAR(50) NOT NULL,
    interval_time VARCHAR(10) NOT NULL,
    open_time BIGINT NOT NULL,
    open_price DECIMAL(20, 8) NOT NULL,
    high_price DECIMAL(20, 8) NOT NULL,
    low_price DECIMAL(20, 8) NOT NULL,
    close_price DECIMAL(20, 8) NOT NULL,
    volume DECIMAL(20, 8) NOT NULL,
    close_time BIGINT NOT NULL,
    quote_asset_volume DECIMAL(20, 8),
    number_of_trades INT,
    taker_buy_base_asset_volume DECIMAL(20, 8),
    taker_buy_quote_asset_volume DECIMAL(20, 8),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY `symbol_exchange_interval_time_open_time` (`symbol`, `exchange`, `interval_time`, `open_time`)
);
SQL;
    $db->exec($sql);
    echo "Migration 002 successful: candlestick_data table created or already exists." . PHP_EOL;
} catch (PDOException $e) {
    die("Migration 002 failed: " . $e->getMessage() . PHP_EOL);
}