<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;

class PermissionControl
{
    public function pathToTypeInfo($path) {

        $typePrefix = "/admin/types/";

        if(strpos($path, $typePrefix) !== false) {
            $type = str_replace($typePrefix, "", $path);
            $typeInfo = db("types")->where("slug", $type)->first();
        } else {
            $typeInfo = null;
        }

        return $typeInfo;
    }


    public function permissionHave($typeInfo, $levelIndex) {
       
        $fullControl = explode(",", $typeInfo->full_control);
        $write = explode(",", $typeInfo->write);
        $read = explode(",", $typeInfo->read);
        $modify = explode(",", $typeInfo->modify);

        $permissions = [];
        

        if(in_array($levelIndex, $fullControl)) {
            $permissions[] = "full_control";
        }
        if(in_array($levelIndex, $write)) {
            $permissions[] = "write";
        }
        if(in_array($levelIndex, $read)) {
            $permissions[] = "read";
        }
        if(in_array($levelIndex, $modify)) {
            $permissions[] = "modify";
        }

        return $permissions;
    }
    
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        $exceptPaths = [
            '/admin/login',
            '/login',
            '/logout',
            '/',
            '/cron',
            '/cron-documents',
            '/cron-report-builder-queue',
            '/clear-cache',
            '/mail-link',

        ];
        $thisPath = $request->getPathInfo();
        
        $onlyAdminPath = [
            '/admin/users',
            '/admin/new/artisan',
            '/admin/new/types',
        ];
        
        if(in_array($thisPath, $onlyAdminPath)) {
            if(!isAdmin()) {
                echo "Only admin can access this area.";
                exit();
            }
        }
        
        
        if(!in_array($thisPath, $exceptPaths)) {

            $thisTypeInfo = $this->pathToTypeInfo($thisPath);

            $userInfo = u();
            $levels = levels();

            $fullControl = 0;
            $write = 1;
            $read = 2;
            $modify = 3;

            //$thisLevel = $levels[$userInfo->level];
            try {
                if(is_null($userInfo->level)) {
                    echo "Level is null. Please update this user level";
                    exit();
                } else {
                    $thisLevelIndex = getLevelIndex($userInfo->level);
                    if(!is_null($thisTypeInfo)) {
                        $permissionHave = $this->permissionHave($thisTypeInfo, $thisLevelIndex);
                        if(in_array("read", $permissionHave) || in_array("full_control", $permissionHave) || in_array("write", $permissionHave)) {
                            return $next($request);
                        } else {
                            echo "You are not authorized to view this area.";
                            exit();
                        }
                    }
                }
            } catch (\Throwable $th) {
                echo "Level is null. Please update this user level";
                exit();
            }
            
            
            //dd($thisLevel);
           // dd($request);
        }
        
        return $next($request);
    }
}