<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace KTXM\ProviderImapMail\Providers;

use Gricob\IMAP\Mailbox;
use KTXF\Mail\Collection\CollectionPropertiesMutableAbstract;
use KTXF\Mail\Collection\CollectionRoles;

/**
 * IMAP Mail Collection Properties
 *
 * Backed by the same internal $data shape as the JMAP provider so that cache
 * documents are interchangeable with fromStore() / toStore().
 */
class CollectionProperties extends CollectionPropertiesMutableAbstract
{
    // ── IMAP hydration ───────────────────────────────────────────────────────

    /**
     * Populate from a gricob Mailbox object.
     *
     * Total / unread counts are NOT available from a LIST response alone.
     * They must be set separately (after SELECT + SEARCH UNSEEN).
     */
    public function fromImap(Mailbox $mailbox): static
    {
        $delimiter = $mailbox->hierarchyDelimiter;
        $this->data['label']     = ($delimiter !== '' && str_contains($mailbox->name, $delimiter))
            ? substr($mailbox->name, strrpos($mailbox->name, $delimiter) + strlen($delimiter))
            : $mailbox->name;
        $this->data['delimiter'] = $delimiter;
        $this->data['attributes'] = $mailbox->nameAttributes;
        $this->data['subscribed'] = in_array('\Subscribed', $mailbox->nameAttributes, true);
        $this->data['total']     = 0;
        $this->data['unread']    = 0;
        $this->data['rank']      = 0;

        // Map standard IMAP role attributes
        $this->data['role'] = $this->roleFromAttributes($mailbox->nameAttributes)->value;

        return $this;
    }

    // ── Store (MongoDB cache) ────────────────────────────────────────────────

    public function toStore(): array
    {
        return $this->data;
    }

    public function fromStore(array $data): static
    {
        $this->data = $data;
        return $this;
    }

    // ── JSON helpers ─────────────────────────────────────────────────────────

    public function jsonSerialize(): array
    {
        return $this->data;
    }

    public function getDelimiter(): ?string
    {
        return $this->data['delimiter'] ?? null;
    }

    // ── Helpers ───────────────────────────────────────────────────────────────

    private function roleFromAttributes(array $attributes): CollectionRoles
    {
        foreach ($attributes as $attr) {
            $lower = strtolower($attr);
            $role = match ($lower) {
                '\sent'    => CollectionRoles::Sent,
                '\trash'   => CollectionRoles::Trash,
                '\drafts'  => CollectionRoles::Drafts,
                '\junk'    => CollectionRoles::Junk,
                '\archive' => CollectionRoles::Archive,
                default    => null,
            };
            if ($role !== null) {
                return $role;
            }
        }
        return CollectionRoles::Custom;
    }
}