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app/Http/Controllers/GroupController.php

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+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Requests\Groups\InviteUserRequest;
+use App\Http\Requests\Groups\StoreRequest;
+use App\Http\Requests\Groups\UpdateRequest;
+use App\Models\Group;
+use App\Models\User;
+use App\Notifications\AsksToJoinGroup;
+use App\Notifications\InvitedToJoinGroup;
+use Illuminate\Http\Request;
+use Notification;
+
+class GroupController extends Controller
+{
+    public function __construct()
+    {
+        $this->authorizeResource(Group::class, 'group');
+    }
+
+    /**
+     * Display a listing of the resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function index(Request $request)
+    {
+        $user   = $request->user();
+        $search = $request->input('search');
+
+        $query = Group::visible()
+            ->whereNotIn('id', $user->groups->pluck('id'))
+            ->with('creator:id,name')
+            ->withCount('activeUsers');
+
+        if (!empty($search)) {
+            $query = $query->where('groups.name', 'like', '%'.$search.'%');
+        }
+
+        return $query
+            ->orderBy('name')
+            ->simplePaginate(25);
+    }
+
+    /**
+     * Display a listing of the resource (active groups).
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function indexActive(Request $request)
+    {
+        $user = $request->user();
+
+        return $user->listActiveGroups();
+    }
+
+    /**
+     * Display a listing of the resource (my groups).
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function indexMyGroups(Request $request)
+    {
+        $user = $request->user();
+
+        return $user->groups()->withCount('activeUsers', 'pendingUsers')
+            ->whereNotIn('status', [
+                Group::$STATUS_REJECTED,
+                Group::$STATUS_LEFT,
+            ])->orderBy('position')->orderBy('id')->get();
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @param \App\Http\Requests\StoreRequest $request
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function store(StoreRequest $request)
+    {
+        $validated            = $request->validated();
+        $user                 = $request->user();
+        $validated['user_id'] = $user->id;
+        $group                = Group::create($validated);
+
+        $user->groups()->save($group, [
+            'status' => 'created',
+        ]);
+
+        return $user->groups()->withCount('activeUsers')->orderBy('position')->get();
+    }
+
+    /**
+     * Display the specified resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function show(Request $request, Group $group)
+    {
+        $user = $request->user();
+
+        $user->setSelectedGroup($group);
+
+        return $user->getFlatTree($group);
+    }
+
+    /**
+     * Update the specified resource in storage.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function update(UpdateRequest $request, Group $group)
+    {
+        $validated = $request->validated();
+
+        $group->name              = $validated['name'];
+        $group->description       = $validated['description'];
+        $group->invite_only       = $validated['invite_only'];
+        $group->auto_accept_users = $validated['auto_accept_users'];
+
+        $group->save();
+
+        return $request->user()->groups()->withCount('activeUsers', 'pendingUsers')->find($group->id);
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function destroy(Request $request, Group $group)
+    {
+        $user = $request->user();
+
+        $group->delete();
+
+        return $user->groups()->withCount('activeUsers')->get();
+    }
+
+    /**
+     * Update my groups positions.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function updatePositions(Request $request)
+    {
+        if (!$request->has('positions')) {
+            abort(422);
+        }
+
+        $positions = $request->input('positions');
+
+        if (!is_array($positions)) {
+            abort(422);
+        }
+
+        $user = $request->user();
+
+        foreach ($positions as $groupId => $position) {
+            if (!is_numeric($groupId) || !is_numeric($position)) {
+                abort(422);
+            }
+
+            $group = $user->groups()->findOrFail($groupId);
+
+            $user->groups()->updateExistingPivot($group, ['position' => $position]);
+        }
+
+        return $user->groups()->withCount('activeUsers')->orderBy('position')->get();
+    }
+
+    /**
+     * Invite user to join specified group.
+     *
+     * @param \App\Requests\Groups\InviteUserRequest $request
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function inviteUser(InviteUserRequest $request, Group $group)
+    {
+        $user = $request->user();
+
+        if (!$user->can('invite', $group)) {
+            abort(403);
+        }
+
+        $validated   = $request->validated();
+        $invitedUser = User::where('email', $validated['email'])->first();
+
+        if ($invitedUser) {
+            $invitedUser->updateGroupStatus($group, Group::$STATUS_INVITED);
+        }
+
+        Notification::route('mail', $validated['email'])
+            ->notify(new InvitedToJoinGroup($request->user(), $group));
+
+        return $request->user()->groups()->withCount('activeUsers', 'pendingUsers')->find($group->id);
+    }
+
+    public function acceptInvitation(Request $request, Group $group)
+    {
+        $user = $request->user();
+        $user->updateGroupStatus($group, Group::$STATUS_ACCEPTED);
+
+        if ($request->ajax()) {
+            return $user->groups()->withCount('activeUsers', 'pendingUsers')->find($group->id);
+        }
+
+        return redirect()->route('account.groups');
+    }
+
+    public function approveUser(Request $request, Group $group, User $user)
+    {
+        $creator = $request->user();
+
+        if (!$creator->can('approve', $group)) {
+            abort(403);
+        }
+
+        $user->updateGroupStatus($group, Group::$STATUS_ACCEPTED);
+
+        return redirect()->route('account.groups');
+    }
+
+    public function rejectInvitation(Request $request, Group $group)
+    {
+        $user = $request->user();
+        $user->updateGroupStatus($group, Group::$STATUS_REJECTED);
+
+        return $user->groups()->withCount('activeUsers', 'pendingUsers')->find($group->id);
+    }
+
+    public function leave(Request $request, Group $group)
+    {
+        $user = $request->user();
+        $user->groups()->detach($group);
+    }
+
+    public function join(Request $request, Group $group)
+    {
+        $user = $request->user();
+
+        if ($group->auto_accept_users) {
+            $user->updateGroupStatus($group, Group::$STATUS_ACCEPTED);
+        } else {
+            $user->updateGroupStatus($group, Group::$STATUS_JOINING);
+
+            Notification::route('mail', $group->creator->email)
+                ->notify(new AsksToJoinGroup($request->user(), $group));
+        }
+    }
+}