<?php

namespace App\Http\Controllers\Groups;

use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\RateLimiter;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Services\AccountService;
use App\Services\GroupService;
use App\Follower;
use App\Profile;
use App\Models\Group;
use App\Models\GroupMember;
use App\Models\GroupInvitation;

class GroupsSearchController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }

    public function inviteFriendsToGroup(Request $request)
    {
        abort_if(!$request->user(), 404);
        $this->validate($request, [
            'uids' => 'required',
            'g' => 'required',
        ]);
        $uid = $request->input('uids');
        $gid = $request->input('g');
        $pid = $request->user()->profile_id;
        $group = Group::findOrFail($gid);
        abort_if(!$group->isMember($pid), 404);
        abort_if(
            GroupInvitation::whereGroupId($group->id)
                ->whereFromProfileId($pid)
                ->count() >= 20,
            422,
            'Invite limit reached'
        );

        $profiles = collect($uid)
            ->map(function($u) {
                return Profile::find($u);
            })
            ->filter(function($u) use($pid) {
                return $u &&
                    $u->id != $pid &&
                    isset($u->id) &&
                    Follower::whereFollowingId($pid)
                        ->whereProfileId($u->id)
                        ->exists();
            })
            ->filter(function($u) use($group, $pid) {
                return GroupInvitation::whereGroupId($group->id)
                    ->whereFromProfileId($pid)
                    ->whereToProfileId($u->id)
                    ->exists() == false;
            })
            ->each(function($u) use($gid, $pid) {
                $gi = new GroupInvitation;
                $gi->group_id = $gid;
                $gi->from_profile_id = $pid;
                $gi->to_profile_id = $u->id;
                $gi->to_local = true;
                $gi->from_local = $u->domain == null;
                $gi->save();
                // GroupMemberInvite::dispatch($gi);
            });
        return [200];
    }

    public function searchFriendsToInvite(Request $request)
    {
        abort_if(!$request->user(), 404);
        $this->validate($request, [
            'q' => 'required|min:2|max:40',
            'g' => 'required',
            'v' => 'required|in:0.2'
        ]);
        $q = $request->input('q');
        $gid = $request->input('g');
        $pid = $request->user()->profile_id;
        $group = Group::findOrFail($gid);
        abort_if(!$group->isMember($pid), 404);

        $res = Profile::where('username', 'like', "%{$q}%")
            ->whereNull('profiles.domain')
            ->join('followers', 'profiles.id', '=', 'followers.profile_id')
            ->where('followers.following_id', $pid)
            ->take(10)
            ->get()
            ->filter(function($p) use($group) {
                return $group->isMember($p->profile_id) == false;
            })
            ->filter(function($p) use($group, $pid) {
                return GroupInvitation::whereGroupId($group->id)
                    ->whereFromProfileId($pid)
                    ->whereToProfileId($p->profile_id)
                    ->exists() == false;
            })
            ->map(function($gm) use ($gid) {
                $a = AccountService::get($gm->profile_id);
                return [
                    'id' => (string) $gm->profile_id,
                    'username' => $a['acct'],
                    'url' => url("/groups/{$gid}/user/{$a['id']}?rf=group_search")
                ];
            })
            ->values();

        return $res;
    }

    public function searchGlobalResults(Request $request)
    {
        abort_if(!$request->user(), 404);
        $this->validate($request, [
            'q' => 'required|min:2|max:40',
            'v' => 'required|in:0.2'
        ]);
        $q = $request->input('q');
        $key = 'groups:search:global:by_name:' . hash('sha256', $q);

        if(RateLimiter::tooManyAttempts('groups:search:global:'.$request->user()->id, 25) ) {
            return response()->json([
                'error' => [
                    'message' => 'Too many attempts, please try again later'
                ]
            ], 422);
        }

        RateLimiter::hit('groups:search:global:'.$request->user()->id);

        return Cache::remember($key, 3600, function() use($q) {
            return Group::whereNull('status')
                ->where('name', 'like', '%' . $q . '%')
                ->orderBy('id')
                ->take(10)
                ->pluck('id')
                ->map(function($group) {
                    return GroupService::get($group);
                });
        });
    }

    public function searchLocalAutocomplete(Request $request)
    {
        abort_if(!$request->user(), 404);
        $this->validate($request, [
            'q' => 'required|min:2|max:40',
            'g' => 'required',
            'v' => 'required|in:0.2'
        ]);
        $q = $request->input('q');
        $gid = $request->input('g');
        $pid = $request->user()->profile_id;
        $group = Group::findOrFail($gid);
        abort_if(!$group->isMember($pid), 404);

        $res = GroupMember::whereGroupId($gid)
            ->join('profiles', 'group_members.profile_id', '=', 'profiles.id')
            ->where('profiles.username', 'like', "%{$q}%")
            ->take(10)
            ->get()
            ->map(function($gm) use ($gid) {
                $a = AccountService::get($gm->profile_id);
                return [
                    'username' => $a['username'],
                    'url' => url("/groups/{$gid}/user/{$a['id']}?rf=group_search")
                ];
            });
        return $res;
    }

    public function searchAddRecent(Request $request)
    {
        $this->validate($request, [
            'q' => 'required|min:2|max:40',
            'g' => 'required',
        ]);
        $q = $request->input('q');
        $gid = $request->input('g');
        $pid = $request->user()->profile_id;
        $group = Group::findOrFail($gid);
        abort_if(!$group->isMember($pid), 404);

        $key = 'groups:search:recent:'.$gid.':pid:'.$pid;
        $ttl = now()->addDays(14);
        $res = Cache::get($key);
        if(!$res) {
            $val = json_encode([$q]);
        } else {
            $ex = collect(json_decode($res))
                ->prepend($q)
                ->unique('value')
                ->slice(0, 3)
                ->values()
                ->all();
            $val = json_encode($ex);
        }
        Cache::put($key, $val, $ttl);
        return 200;
    }

    public function searchGetRecent(Request $request)
    {
        $gid = $request->input('g');
        $pid = $request->user()->profile_id;
        $group = Group::findOrFail($gid);
        abort_if(!$group->isMember($pid), 404);
        $key = 'groups:search:recent:'.$gid.':pid:'.$pid;
        return Cache::get($key);
    }
}