<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Carbon\Carbon;

class BillplzTransactionSummaryController extends Controller
{
    public function index(Request $request)
    {
        $date = $request->selectedDate ?? Carbon::now()->toDateString();
        
        $transactionDataPKB = collect( Http::arrahn()->get('/api/transaction/online/query', ['date' => $date, 'status' => 'paid'])->json() );
	$transactionDataPKB = $transactionDataPKB->map(function($x){
		$x['account_own_by'] = 'PKB';
		return $x;
	});

	$transactionDataKOOP = collect( Http::arrahn_koop()->get('/api/transaction/online/query', ['date' => $date, 'status' => 'paid'])->json() );
	$transactionDataKOOP = $transactionDataKOOP->map(function($x){
		$x['account_own_by'] = 'KOOP';
		return $x;
	});


	$transactionData = $transactionDataPKB->merge($transactionDataKOOP);

	$transactionDataPKB = $this->processArrahnTransactions($transactionDataPKB);
	$transactionDataKOOP = $this->processArrahnTransactions($transactionDataKOOP);
	$transactionData = $this->processArrahnTransactions($transactionData);

	$billIds = $transactionData->map(fn($x) => ['bill_id' => $x['bill_id'], 'account_own_by' => $x['account_own_by']]);
        $billplzBills = Http::get(config('api.url_arrahn_portal') . '/api/billplz', ['bill_ids' => json_encode($billIds)])->json();

	$data = array_map(fn($x, $y) => $this->processBillplzBills($x, $y), $billplzBills, [$transactionDataKOOP, $transactionDataPKB]);

	[$billPlzTransactionSummaryKOOP, $billPlzTransactionSummaryPKB] = $data;

        return view('online.billplz-transaction-summary.index', compact('billPlzTransactionSummaryPKB' ,'billPlzTransactionSummaryKOOP', 'date'));
    }

    public function processArrahnTransactions($transactionData)
    {
        // Group transactionData by bill_id
        $transactionData = $transactionData->groupBy(function($transaction) {
            return $transaction['billplz_id'];
        })->toArray();
        
        $transactionData = array_map(fn($x) => ['arrahn_transactions' => $x], $transactionData);
	$transactionData = array_map(function($x){
		$x['bill_id'] = current($x['arrahn_transactions'])['billplz_id'];
		$x['account_own_by'] = current($x['arrahn_transactions'])['account_own_by'];
		return $x;
	}, $transactionData);
        $transactionData = collect($transactionData);

	return $transactionData;
    }

    public function processBillplzBills($bills_group, $transactionData)
    {

        $bills_group = collect($bills_group)->map(function($bill) {            
	    $bill['paid_amount_formatted'] = floatval($bill['paid_amount']['amount']) / 100; 
            return $bill;
        });
        
        $sumOfArrahnTransactions = $transactionData->sum(fn($x) => array_reduce($x['arrahn_transactions'], fn($carry, $item) => $carry + $item['total_payment'], 0));
        $sumOfBillplzTransactions = collect($bills_group)->sum(fn($x) => $x['paid_amount_formatted']);
        $numberOfArrahnTransactions = $transactionData->count();
        
        $paymentGatewayCost = 'RM ' . number_format($sumOfBillplzTransactions - $sumOfArrahnTransactions, 2);
        $sumOfArrahnTransactions = 'RM ' . number_format($sumOfArrahnTransactions, 2);
        $sumOfBillplzTransactions = 'RM ' . number_format($sumOfBillplzTransactions, 2);
        
        
        if ($transactionData->count() !== count($bills_group)) {
            throw new \Exception("The number of items in transactionData and bills_group must be the same.");
        }
        
        $billPlzTransactionSummary = $transactionData->zip($bills_group)->map(function ($zippedItem) {
            [$transactionData, $billplzBill] = $zippedItem;
            
            $transactionData['billplz_bill'] = $billplzBill;
            
            return $transactionData;
        });

	return[
	    'billPlzTransactionSummary' => $billPlzTransactionSummary,
	    'sumOfArrahnTransactions' => $sumOfArrahnTransactions,
	    'sumOfBillplzTransactions' => $sumOfBillplzTransactions, 
	    'paymentGatewayCost' => $paymentGatewayCost,
	    'numberOfArrahnTransactions' => $numberOfArrahnTransactions,
	];
    }
    
}