<?php

namespace App\Http\Controllers;

use App\Models\User;
use App\Models\Business;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Auth;

class BusinessController extends Controller
{
    public function index()
    {
        return auth()->user()->businesses
            ->keyBy('id')
            ->map(fn($b, $bid) => Business::info($bid));
    }

    public function store(Request $request)
    {
//        $users = [];
//        foreach ($request->users ?? [] as $key => $value) {
//            $users[$value] = [];
//        }

//        $owner = [
//            Auth::id() => [
//                'level' => enum('levels.owner.id'),
//                ]
//            ];
//
//        $users = $users + $owner;
//
//        $request->merge(['users' => $users]);

        $business = Business::create($request->all());
        $business->users()->sync([Auth::id() => [
                'level' => enum('levels.owner.id'),
                ]
            ], false);

        return Business::info($business->id);
    }

   public function show(string $business)
   {
       permit('businessAccess');
       return Business::info($business);
   }

    public function update(Request $request, string $business)
    {
        // permit('businessEdit');
        $business = Business::findOrFail($business);
        $business->fill($request->all())->save();

        return Business::info($business->id);
    }

    public function setAvatar(Request $request, string $business)
    {
        $business = Business::findOrFail($business);
        if ($request->hasFile('avatar')) {
            $business->saveAsAvatar($request->file('avatar'));
        }

        return Business::info($business->id);
    }

    public function unSetAvatar(Request $request, string $business)
    {
        $business = Business::findOrFail($business);
        $business->deleteAvatar();

        return Business::info($business->id);
    }


    public function info(string $business)
    {
        return request('_business_info');
    }

    public function restore(string $business)
    {
        $business = Business::onlyTrashed()->findOrFail($business);
        $business->restore();

        return response(['message' => 'business successfully restored.']);
    }

    public function storeOrUpdateUser($business, Request $request)
    {
        permit('businessUsers');
        $validatedData = $this->validate($request, [
            'level' => 'required|numeric|between:0,4',
            'user_id' => 'required|numeric|not_in:'.auth()->id(),
        ]);

        DB::transaction(function () use ($validatedData, $request, $business) {
            $this->addUser($business, $request->user_id, $validatedData);
            if (can('businessAccess', ['user_id'=> $request->user_id])) {
                //update
                $this->relatedUpdateChanges($request->user_id, $request->level);
            }
        }, 3);

        return Business::info($business, true);
    }

    public function relatedUpdateChanges($user_id, $level)
    {
        if ($level == enum('levels.owner.id')) {
            // user up level to owner
            $this->removeProjectDirectRelation($user_id);
        }
        if ($level != enum('levels.owner.id') &&
            $level > request('_business_info')['info']['users'][$user_id]['level']) {
            // user at least up level to $request->level
            $this->updateProjectAccessLevel($level, $user_id);
        }
    }

    public function addUser($business, $user, $validatedData)
    {
        $businessModel = Business::findOrFail($business);
        $businessModel->users()->sync([$user => $validatedData], false);
    }

    public function removeProjectDirectRelation($user)
    {
        $userModel = User::findOrFail($user);
        return $userModel->projects()->sync([], true);
    }

    public function updateProjectAccessLevel($level, $user)
    {
        $ids = [];
        foreach (request('_business_info')['projects'] as $project_id => $item) {
            foreach ($item['members'] as $idx => $member) {
                if ($member['id'] == $user && $member['level'] != enum('levels.inactive.id') && $member['level'] < $level) {
                    $ids[$project_id] = ['level' => $level];
                    break;
                }
            }
        }
        $userModel = User::findOrFail($user);
        return $userModel->projects()->sync($ids, false);
    }

    public function deleteUser($business, $user)
    {
        permit('businessAccess');
        $this->checkDeleteUserPolicy($user);
        $businessModel = Business::findOrFail($business);

        DB::transaction(function () use ($user, $businessModel) {
            $this->detachUser($businessModel, $user);
            $this->removeProjectDirectRelation($user);
        }, 3);

        return Business::info($business, true);
    }

    public function haveAnotherOwner($user)
    {
        foreach (request('_business_info')['info']['users'] as $id => $item) {
            if ($item['level'] == enum('levels.owner.id') && $id != $user) {
                return  true;
            }
        }
        return false;
    }

    public function detachUser($business, $user)
    {
        return $business->users()->sync(
            $business->users->except($user)->pluck('id')->toArray()
        );
    }

    public function checkDeleteUserPolicy($user)
    {
        if (!can('isBusinessOwner') && auth()->id() != $user ) {
            // Non owner user remove another owner
            abort(405);
        }
        if (can('isBusinessOwner') && auth()->id() == $user && !$this->haveAnotherOwner($user)) {
            // Owner remove self but business haven't another owner
            abort(405);
        }
    }

}