<?php

namespace FreightQuote\User;

class FlatFileUserRepository implements UserRepository
{
    private string $pathToUserFile = __DIR__.'/../../storage/users.json';

    private function getUsersData(): array
    {
        $json = file_get_contents($this->pathToUserFile);
        $data = json_decode($json, true);

        return $data;
    }

    public function findByEmail(string $email): ?User
    {
        $data = $this->getUsersData();
        foreach ($data as $user) {
            if ($user['email'] === $email) {
                return new User($user['email'], $user['password']);
            }
        }
        return null;
    }

    public function save(User $user): User
    {
        $data = $this->getUsersData();
        foreach ($data as $jsonUser) {
            if ($jsonUser['email'] === $user->getEmail()) {
                $jsonUser['password'] = $user->getPassword();
                file_put_contents(
                    $this->pathToUserFile,
                    json_encode($data, JSON_PRETTY_PRINT)
                );
                return new User(
                    $jsonUser['email'],
                    $jsonUser['password']
                );
            }
        }
        $newUser = [
            'email' => $user->getEmail(),
            'password' => $user->getPassword(),
        ];
        $data[] = $newUser;
        file_put_contents(
            $this->pathToUserFile,
            json_encode($data, JSON_PRETTY_PRINT)
        );
        return new User(
            $newUser['email'],
            $newUser['password']
        );
        
    }
}