<?php

namespace Hpz937\BillReminder\Service;

use Hpz937\BillReminder\Database\DatabaseInterface;
use Hpz937\BillReminder\Model\Bill;

class BillManager {
    private DatabaseInterface $db;

    public function __construct(DatabaseInterface $db) {
        $this->db = $db;
    }

    public function createBill(Bill $bill): bool {
        $sql = "INSERT INTO bills (dueDate, amount, description, isPaid) VALUES (:dueDate, :amount, :description, :isPaid)";
        $this->db->prepare($sql);
        $this->db->execute([
            ':dueDate' => $bill->dueDate,
            ':amount' => $bill->amount,
            ':description' => $bill->description,
            ':isPaid' => $bill->isPaid ? 1 : 0,
        ]);
        return $this->db->lastInsertId() > 0;
    }    

    public function getBill(int $id): ?Bill {
        $sql = "SELECT * FROM bills WHERE id = :id";
        $this->db->prepare($sql);
        $this->db->execute([':id' => $id]);
        $result = $this->db->fetch();
        if ($result) {
            return new Bill($result['id'], $result['dueDate'], $result['amount'], $result['description'], $result['isPaid'] == 1);
        }
        return null;
    }
    

    public function updateBill(Bill $bill): bool {
        $sql = "UPDATE bills SET dueDate = :dueDate, amount = :amount, description = :description, isPaid = :isPaid WHERE id = :id";
        $this->db->prepare($sql);
        return $this->db->execute([
            ':id' => $bill->id,
            ':dueDate' => $bill->dueDate,
            ':amount' => $bill->amount,
            ':description' => $bill->description,
            ':isPaid' => $bill->isPaid ? 1 : 0,
        ]);
    }
    

    public function deleteBill(int $id): bool {
        $sql = "DELETE FROM bills WHERE id = :id";
        $this->db->prepare($sql);
        return $this->db->execute([':id' => $id]);
    }
    

    public function listBills(): array {
        $sql = "SELECT * FROM bills";
        $this->db->prepare($sql);
        $this->db->execute();
        $bills = [];
        while ($row = $this->db->fetch()) {
            $bills[] = new Bill($row['id'], $row['dueDate'], $row['amount'], $row['description'], $row['isPaid'] == 1);
        }
        return $bills;
    }
}