<?php
session_start();
header('Content-Type: application/json');
require_once __DIR__ . '/db/config.php';

if (!isset($_SESSION['user_id'])) {
    echo json_encode(['error' => 'User not logged in.']);
    exit;
}

$city_name = $_GET['city'] ?? null;

if (!$city_name) {
    echo json_encode(['error' => 'City name is required.']);
    exit;
}

try {
    $pdo = db();
    $stmt = $pdo->prepare("SELECT * FROM weather_history WHERE city_name = ? ORDER BY timestamp DESC");
    $stmt->execute([$city_name]);
    $history = $stmt->fetchAll(PDO::FETCH_ASSOC);
    echo json_encode($history);
} catch (PDOException $e) {
    echo json_encode(['error' => 'Database error: ' . $e->getMessage()]);
}