<?php

namespace PublishDeck\App\Http\Controllers;

// Exit if accessed directly.
if (! defined('ABSPATH')) {
    exit;
}

use PublishDeck\App\Services\Content\PostListing;
use PublishDeck\App\Services\Permissions\MemberCaps;
use WP_REST_Request;
use WP_REST_Response;

/** GET /posts — the console list, with registry state, status views and per-row caps. */
class PostsController extends Controller
{
    public function index(WP_REST_Request $request): WP_REST_Response
    {
        $page     = max(1, (int) ($request->get_param('page') ?: 1));
        $perPage  = max(1, min(100, (int) ($request->get_param('per_page') ?: 10)));
        $search   = sanitize_text_field((string) ($request->get_param('search') ?: ''));
        $authorId = max(0, (int) ($request->get_param('author_id') ?: 0));

        $view = (string) ($request->get_param('status') ?: 'all');
        if (!isset(PostListing::VIEWS[$view])) {
            $view = 'all';
        }

        // Authors without edit_others_fspd_posts see their own posts, and a member also sees the
        // posts that target the sites they edit for.
        $viewAll = current_user_can('edit_others_fspd_posts');
        $ownId   = $viewAll ? 0 : get_current_user_id();
        $siteIds = $ownId > 0 ? (new MemberCaps([]))->editorSitesFor($ownId) : [];

        if ($ownId > 0) {
            $authorId = empty($siteIds) ? $ownId : 0;
        }

        $listing = new PostListing();
        $counts  = $listing->viewCounts($ownId, $siteIds);

        // The author dropdown and name search only apply to users who see others' posts.
        $authors = $viewAll ? $listing->authorOptions() : [];

        $result = $listing->query([
            'page'      => $page,
            'per_page'  => $perPage,
            'search'    => $search,
            'author_id' => $authorId,
            'view'      => $view,
            'own_id'    => $ownId,
            'site_ids'  => $siteIds,
            'view_all'  => $viewAll,
            'authors'   => $authors,
        ]);

        return $this->sendSuccess([
            'posts'       => $result['posts'],
            'total'       => $result['total'],
            'total_all'   => $counts['all'],
            'counts'      => $counts,
            'authors'     => $authors,
            'view'        => $view,
            'page'        => $page,
            'per_page'    => $perPage,
            'total_pages' => $result['total_pages'],
        ]);
    }
}