<?php

namespace App;
use DB;

use Illuminate\Database\Eloquent\Model;

class RegNumber extends Model
{
    const INC = 1;    
    const OUT = 2;    
    const ITR = 3;    
    const TMP = 4;    

    protected $fillable = ['reg_number', 'user_id'];
    static $doctype = ['1' => 'seq_inc', '2'=>'seq_out', '3'=>'seq_int', '4' => 'seq_tmp'];
    static $prefix = ['1' => 'registration_number_prefix', '2'=>'outgoing_registration_number_prefix', '3'=>'internal_registration_number_prefix', '4' => 'temporary_registration_number_prefix'];

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function getIsCancelledAttribute($attribute)
    {
        return ($attribute == 1) ? 'Yes' : 'No';
    }

    public static function updateRegNumber($rn)
    {
        if(DB::table('reg_numbers')->where('reg_number', $rn)->exists())
            DB::table('reg_numbers')->where('reg_number', $rn)->update(['is_cancelled'=>0]);
    }
    public static function getNextRegNumber($userid, $dt)
    {
        
        if(isset(self::$doctype[$dt]))
        {
            $setting = Setting::first();
            $vprefix = self::$prefix[$dt];
            
            $registration_number= (($setting->$vprefix && $setting->$vprefix!='') ? $setting->$vprefix.'-' : '') . static::getRegFormat($setting->is_registration_number_with_date) . '-' . sprintf('%04d', (static::getNextSeq($dt)));

            if(RegNumber::create(['user_id' => $userid, 'reg_number' => $registration_number]))
                return $registration_number;
        }

        return null;
    }

    private static function getRegFormat($val)
    {
        $reg_format = [
			'0' => 'PRX-YYYY-MM-DD-SEQ', 
			'1' => 'PRX-YYYY-MM-SEQ',
			'2' => 'PRX-YYYY-SEQ',
			'3' => 'PRX-SEQ'
        ];
        $res='';
        if($val == 0)
            $res = date('Y-m-d');
        else if($val == 1)
            $res = date('Y-m');
        else if($val == 2)
            $res = date('Y');
        
        return $res;
    }

    public static function getLatestSeq($dt)
    {
        if(isset(self::$doctype[$dt]))
        {
            $dtype = self::$doctype[$dt];   
            return DB::table('reg_number_seq')->first()->$dtype;
        }
        return null;
    }

    public static function getNextSeq($dt)
    {
        if(isset(self::$doctype[$dt]))
        {
            $dtype = self::$doctype[$dt];   
            try {
                $seq = static::getLatestSeq($dt)+1;
                DB::table('reg_number_seq')->update([$dtype=>$seq]);
                return $seq;
            } catch (\Throwable $th) {
                return null;
            }
        }
        return null;
    }

    public static function resetSeqNumber($seq, $type=null)
    {
        if($type == null)
        {
            try{
                DB::table('reg_number_seq')->update([
                    'seq_inc' => $seq,
                    'seq_out' => $seq,
                    'seq_int' => $seq,
                    'seq_tmp' => $seq
                ]);
            } catch(\Throwable $th){
                return null;
            }
        }
        else if(isset(self::$doctype[$type]))
        {
            $dtype = self::$doctype[$type];   
            try {
                DB::table('reg_number_seq')->update([$dtype=>$seq]);
            } catch (\Throwable $th) {
                return null;
            }
        }
        return true;
    }
}