<?php

namespace App\Jobs;

use Carbon\Carbon;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldBeUnique;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\Log;

use App\Models\{Cost,Service,Site,Supplier};
use App\Traits\Import;

class ImportCosts implements ShouldQueue
{
    use Dispatchable,InteractsWithQueue,Queueable,SerializesModels,Import;

	private const LOGKEY = 'JIC';
	private Cost $co;
	private Site $site;
	private string $file;
	protected Collection $columns;

    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct(Site $site,Supplier $so,Carbon $invoice_date,string $file)
    {
		$this->file = $file;
		$this->site = $site;

		$this->co = Cost::where('site_id',$site->site_id)
			->where('supplier_id',$so->id)
			->where('billed_at',$invoice_date)
			->firstOrNew();
		$this->co->active = TRUE;
		$this->co->site_id = $site->site_id;
		$this->co->billed_at = $invoice_date;
		$this->co->supplier_id = $so->id;
		$this->co->save();

		Cost\Broadband::where('cost_id',$this->co->id)->where('site_id',$site->site_id)->delete();
		Cost\Phone::where('cost_id',$this->co->id)->where('site_id',$site->site_id)->delete();
		Cost\Generic::where('cost_id',$this->co->id)->where('site_id',$site->site_id)->delete();

		// @todo to be stored in supplier config
		$headers = [
			'INVOICEID'=>'Item ID',
			'REF'=>'Reference No',
			'IDTAG'=>'ID Tag',
			'CATEGORY'=>'Category',
			'DESC'=>'Item Description',
			'QUANTITY'=>'Quantity',
			'PRICEUNIT'=>'Unit Price (inc-GST)',
			'PRICETOTAL'=>'Total (inc-GST)'
		];

		$this->columns = collect($headers)->transform(function($item) { return strtolower($item); });
    }

	/**
	 * Execute the job.
	 *
	 * @return void
	 * @throws \Exception
	 */
    public function handle()
    {
		Config::set('site',$this->site);
		$skip = 7;		 // @todo to be stored in supplier config

		$file = fopen('storage/app/'.$this->file,'r');
		$haveHeader = FALSE;

		$c = 0;
		while (! feof($file)) {
			$line = stream_get_line($file,0,"\r\n");
			if (str_starts_with($line,'#'))
				continue;

			// Remove any embedded CR and BOM
			$line = str_replace("\r",'',$line);
			$line = preg_replace('/^\x{feff}/u','',$line);
			if (($c++ < $skip) || (! $line))
				continue;

			// The first line is a header.
			if (! $haveHeader) {
				Log::debug(sprintf('%s: Input File: %s',get_class($this),$this->file));
				Log::debug(sprintf('%s: Processing columns: %s',get_class($this),join('|',$this->setColumns($line)->toArray())));
				$haveHeader = TRUE;
				continue;
			}

			// If the line has a , between two (), then convert the comma to a space.
			$x = [];
			if (preg_match('#\(.+,.+\)#i',$line,$x)) {
				$replace = str_replace(',','_',$x[0]);
				$line = str_replace($x[0],$replace,$line);
				//dd($line,$x);
			}

			$fields = str_getcsv(trim($line));
			if (is_null($x=$this->getColumnKey('DESC')) OR empty($fields[$x]))
				continue;

			// The first part of our item description is the service number.
			// This should go to a "supplier" function, since all suppliers may show different values in description.
			$m = [];
			$desc = $fields[$x];
			// m[1] = Service, m[2] = Desc, m[3] = From Date, m[4] = To Date
			preg_match('#^([0-9]{10})\s+-\s+(.*)\(([0-9]+\s+[JFMASOND].*\s+[0-9]+)+\s+-\s+([0-9]+\s+[JFMASOND].*\s+[0-9]+)+\)$#',$fields[$x],$m);

			if (count($m) !== 5) {
				dump(sprintf('ERROR: Description didnt parse [%s] on line [%d]',$fields[$x],$c));
				continue;
			}

			$cost = ($x=$this->getColumnKey('PRICETOTAL')) ? str_replace([',','$'],'',$fields[$x]) : NULL;
			$start_at = Carbon::createFromFormat('d M Y',$m[3]);
			$stop_at = Carbon::createFromFormat('d M Y',$m[4]);
			$so = Service::search($m[1])->active()->with(['type','product.type.supplied'])->single();

			if ($so) {
				// r[1] = Monthly Charge or Extra Charge,r[2] = "On Plan", r[3] = Plan Info
				$r = [];
				switch ($so->category) {
					case 'broadband':
						$to = Cost\Broadband::where('site_id',$this->co->site_id)
							->where('cost_id',$this->co->id)
							->where('service_broadband_id',$so->type->id)
							->where('start_at',$start_at)
							->where('end_at',$stop_at)
							->firstOrNew();
						$to->service_broadband_id = $so->type->id;

						preg_match('#^(Monthly Internet Charge|Plan Change Fee|Change billing date refund for Monthly Internet Charge On Plan|First 12 Month VISP broadband plan discount|.*)\s?(On Plan)?\s?(.*)#',$m[2],$r);

						switch ($r[1]) {
							case 'Monthly Internet Charge':
							case 'First 12 Month VISP broadband plan discount':
							case 'Change billing date refund for Monthly Internet Charge On Plan':
								$to->base =+ $cost;
								break;

							case 'Plan Change Fee':
								$to->excess =+ $cost;
								break;

							default:
								dump(['extra charge'=>$r]);
								$to->excess =+ $cost;
						}

						break;

					case 'phone':
						$to = Cost\Phone::where('site_id',$this->co->site_id)
							->where('cost_id',$this->co->id)
							->where('service_phone_id',$so->type->id)
							->where('start_at',$start_at)
							->where('end_at',$stop_at)
							->firstOrNew();
						$to->service_phone_id = $so->type->id;

						preg_match('#^(Residential VOIP Plan Excess Usage|Virtual FAX Number Monthly Rental|Corporate VOIP Plan Monthly Rental|Residential VOIP Plan Monthly Rental|.*)\s?(.*)#',$m[2],$r);

						switch ($r[1]) {
							case 'Residential VOIP Plan Monthly Rental':
							case 'Virtual FAX Number Monthly Rental':
							case 'Corporate VOIP Plan Monthly Rental':
								$to->base =+ $cost;
								break;

							case 'Residential VOIP Plan Excess Usage':
								$to->excess =+ $cost;
								$to->notes = $r[2];
								break;

							default:
								dump(['extra charge'=>$r]);
								$to->excess =+ $cost;
						}

						break;

					default:
						dump(['so'=>$so,'category'=>$so->category,'line'=>$line,'m'=>$m,'r'=>$r]);
						throw new \Exception(sprintf('ERROR: Service type not handled for service [%s] (%s) on line [%d]',$m[1],$so->category,$c));
				}

			} else {
				dump(['line'=>$line,'sql'=>Service::search($m[1])->active()->with(['type','product.type.supplied'])->toSql()]);

				$to = Cost\Generic::where('site_id',$this->co->site_id)
					->where('cost_id',$this->co->id)
					->where('notes',sprintf('%s:%s',$m[1],$m[2]))
					->where('start_at',$start_at)
					->where('end_at',$stop_at)
					->firstOrNew();

				$to->excess =+ $cost;
				$to->notes = $line;
			}

			$to->site_id = $this->co->site_id;
			$to->cost_id = $this->co->id;
			$to->active = TRUE;
			$to->start_at = $start_at;
			$to->end_at = $stop_at;

			// Work out supplier product number
			Log::warning(sprintf('%s:Supplier product ID not matched',self::LOGKEY),['r'=>$r]);

			//dd($m[2],$cost,$so->product->type->supplied);

			// Work out if this base charge, or extra charge

			//dd(['M'=>__METHOD__,'fields'=>$fields,'DESC'=>$this->getColumnKey('DESC'),'desc'=>$desc,'m'=>$m,'sql'=>$so->toSql(),'bindings'=>$so->getBindings(),'so'=>$so]);
			$to->save();
		}

		fclose($file);
    }
}