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

$method = $_SERVER['REQUEST_METHOD'];

try {
    $pdo = db();

    if ($method === 'GET') {
        $stmt = $pdo->query("SELECT * FROM clients ORDER BY created_at DESC");
        echo json_encode($stmt->fetchAll());
    } elseif ($method === 'POST') {
        $data = json_decode(file_get_contents('php://input'), true);
        
        if (isset($data['action']) && $data['action'] === 'save_client') {
            $stmt = $pdo->prepare("INSERT INTO clients (name, job, age_range, hobbies) VALUES (?, ?, ?, ?)");
            $stmt->execute([
                $data['name'],
                $data['job'] ?? null,
                $data['age_range'] ?? null,
                $data['hobbies'] ?? null
            ]);
            echo json_encode(['success' => true, 'id' => $pdo->lastInsertId()]);
        } elseif (isset($data['action']) && $data['action'] === 'log_interaction') {
            $stmt = $pdo->prepare("INSERT INTO interactions (client_id, day_number, notes) VALUES (?, ?, ?)");
            $stmt->execute([
                $data['client_id'],
                $data['day_number'],
                $data['notes']
            ]);
            
            // Update current day for client
            $stmt = $pdo->prepare("UPDATE clients SET current_day = ? WHERE id = ?");
            $stmt->execute([$data['day_number'], $data['client_id']]);
            
            echo json_encode(['success' => true]);
        }
    }
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['error' => $e->getMessage()]);
}