<?php
namespace ProVM\Emails\Model;

use DateTimeInterface;
use ProVM\Common\Define\Model;
use ProVM\Common\Exception\Database\BlankResult;
use ProVM\Common\Exception\EmptyMailbox;
use ProVM\Common\Exception\Mailbox\Stateless;
use Safe\DateTimeImmutable;

class Mailbox implements Model
{
    protected int $id;
    protected string $name;
    protected int $validity;

    public function getId(): int
    {
        return $this->id;
    }
    public function getName(): string
    {
        return $this->name;
    }
    public function getValidity(): int
    {
        return $this->validity;
    }

    public function setId(int $id): Mailbox
    {
        $this->id = $id;
        return $this;
    }
    public function setName(string $name): Mailbox
    {
        $this->name = $name;
        return $this;
    }
    public function setValidity(int $uidvalidity): Mailbox
    {
        $this->validity = $uidvalidity;
        return $this;
    }

    protected \ProVM\Emails\Repository\State\Mailbox $stateRepository;

    public function getStateRepository(): \ProVM\Emails\Repository\State\Mailbox
    {
        return $this->stateRepository;
    }
    public function setStateRepository(\ProVM\Emails\Repository\State\Mailbox $repository): Mailbox
    {
        $this->stateRepository = $repository;
        return $this;
    }

    protected array $states;
    public function getStates(): array
    {
        if (!isset($this->states)) {
            try {
                $this->setStates($this->getStateRepository()->fetchByMailbox($this->getId()));
            } catch (BlankResult $e) {
                return [];
            }
        }
        return $this->states;
    }
    public function addState(\ProVM\Emails\Model\State\Mailbox $state): Mailbox
    {
        $this->states []= $state;
        return $this;
    }
    public function setStates(array $states): Mailbox
    {
        foreach ($states as $state) {
            $this->addState($state);
        }
        return $this;
    }

    public function lastState(): State\Mailbox
    {
        if (count($this->getStates()) === 0) {
            throw new Stateless($this);
        }
        return $this->getStates()[array_key_last($this->getStates())];
    }
    public function lastChecked(): ?DateTimeInterface
    {
        if (count($this->getStates()) == 0) {
            return null;
        }
        return $this->lastState()->getDateTime();
    }
    public function lastCount(): int
    {
        if (count($this->getStates()) == 0) {
            return 0;
        }
        return $this->lastState()->getCount();
    }
    public function lastPosition(): int
    {
        $state = $this->lastState()->getUIDs();
        return array_key_last($state);
    }

    public function toArray(): array
    {
        return [
            'id' => $this->getId(),
            'name' => $this->getName(),
            //'validity' => $this->getValidity(),
            'last_checked' => [
                'date' => $this->lastChecked() ?? 'never',
                'count' => $this->lastCount() ?? 0
            ]
        ];
    }
}