<?php
/**
 * NOTICE OF LICENSE.
 *
 * UNIT3D Community Edition is open-sourced software licensed under the GNU Affero General Public License v3.0
 * The details is bundled with this project in the file LICENSE.txt.
 *
 * @project    UNIT3D Community Edition
 *
 * @author     HDVinnie <hdinnovations@protonmail.com>
 * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
 */

namespace App\Http\Controllers\Staff;

use App\Http\Controllers\Controller;
use App\Http\Requests\Staff\StoreForumRequest;
use App\Http\Requests\Staff\UpdateForumRequest;
use App\Models\Forum;
use App\Models\Group;
use App\Models\Permission;
use Illuminate\Support\Str;
use Exception;

/**
 * @see \Tests\Todo\Feature\Http\Controllers\Staff\ForumControllerTest
 */
class ForumController extends Controller
{
    /**
     * Display All Forums.
     */
    public function index(): \Illuminate\Contracts\View\Factory|\Illuminate\View\View
    {
        return view('Staff.forum.index', [
            'categories' => Forum::orderBy('position')
                ->whereNull('parent_id')
                ->with(['forums' => fn ($query) => $query->orderBy('position')])
                ->get(),
        ]);
    }

    /**
     * Show Forum Create Form.
     */
    public function create(): \Illuminate\Contracts\View\Factory|\Illuminate\View\View
    {
        return view('Staff.forum.create', [
            'categories' => Forum::whereNull('parent_id')->get(),
            'groups'     => Group::all(),
        ]);
    }

    /**
     * Store A New Forum.
     */
    public function store(StoreForumRequest $request): \Illuminate\Http\RedirectResponse
    {
        $groups = Group::all();

        $forum = Forum::create(
            ['slug' => Str::slug($request->title)]
            + $request->safe()->only(
                [
                    'name',
                    'position',
                    'description',
                    'parent_id'
                ]
            )
        );

        // Permissions
        foreach ($groups as $group) {
            $perm = Permission::where('forum_id', '=', $forum->id)->where('group_id', '=', $group->id)->first();

            if ($perm == null) {
                $perm = new Permission();
            }

            $perm->forum_id = $forum->id;
            $perm->group_id = $group->id;

            if (\array_key_exists($group->id, $request->input('permissions'))) {
                $perm->show_forum = isset($request->input('permissions')[$group->id]['show_forum']);
                $perm->read_topic = isset($request->input('permissions')[$group->id]['read_topic']);
                $perm->reply_topic = isset($request->input('permissions')[$group->id]['reply_topic']);
                $perm->start_topic = isset($request->input('permissions')[$group->id]['start_topic']);
            } else {
                $perm->show_forum = false;
                $perm->read_topic = false;
                $perm->reply_topic = false;
                $perm->start_topic = false;
            }

            $perm->save();
        }

        return to_route('staff.forums.index')
            ->withSuccess('Forum has been created successfully');
    }

    /**
     * Forum Edit Form.
     */
    public function edit(Forum $forum): \Illuminate\Contracts\View\Factory|\Illuminate\View\View
    {
        return view('Staff.forum.edit', [
            'categories' => Forum::whereNull('parent_id')->get(),
            'groups'     => Group::all(),
            'forum'      => $forum->load('permissions'),
        ]);
    }

    /**
     * Edit A Forum.
     */
    public function update(UpdateForumRequest $request, Forum $forum): \Illuminate\Http\RedirectResponse
    {
        $groups = Group::all();

        $forum->update(
            [
                'slug'      => Str::slug($request->title),
                'parent_id' => $request->forum_type === 'category' ? null : $request->parent_id,
            ]
            + $request->safe()->only(['name', 'position', 'description'])
        );

        // Permissions
        foreach ($groups as $group) {
            $permission = Permission::whereBelongsTo($forum)->whereBelongsTo($group)->firstOrNew([
                'forum_id' => $forum->id,
                'group_id' => $group->id,
            ]);

            if (\array_key_exists($group->id, $request->input('permissions'))) {
                $permission->show_forum = isset($request->input('permissions')[$group->id]['show_forum']);
                $permission->read_topic = isset($request->input('permissions')[$group->id]['read_topic']);
                $permission->reply_topic = isset($request->input('permissions')[$group->id]['reply_topic']);
                $permission->start_topic = isset($request->input('permissions')[$group->id]['start_topic']);
            } else {
                $permission->show_forum = false;
                $permission->read_topic = false;
                $permission->reply_topic = false;
                $permission->start_topic = false;
            }

            $permission->save();
        }

        return to_route('staff.forums.index')
            ->withSuccess('Forum has been edited successfully');
    }

    /**
     * Delete A Forum.
     *
     * @throws Exception
     */
    public function destroy(Forum $forum): \Illuminate\Http\RedirectResponse
    {
        $forum->permissions()->delete();

        if ($forum->parent_id === null) {
            $category = $forum;

            foreach ($category->forums as $forum) {
                $forum->permissions()->delete();
                $forum->posts()->delete();
                $forum->topics()->delete();
                $forum->delete();
            }

            $category->delete();
        } else {
            $forum->posts()->delete();
            $forum->topics()->delete();
            $forum->delete();
        }

        return to_route('staff.forums.index')
            ->withSuccess('Forum has been deleted successfully');
    }
}