<?php

namespace App\Classes\Modules\Accounting\ControllersLogic;


use App\Classes\Exceptions\MalformedRequestException;
use App\Classes\General\Abstracts\AbstractControllerLogic;
use App\Classes\Modules\Documents\DataTransferObjects\DocumentObject;
use App\Classes\ValueObjects\Constants\ApprovalStatus;
use App\Models\AccountStatement;
use App\Models\StatementAccount;
use App\Models\StatementTransaction;
use Exception;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Log;
use Maatwebsite\Excel\Facades\Excel;

class ImportAmbankStatementLogic extends AbstractControllerLogic
{

    /**
     * @return array
     */
    protected function notification():array {
        return [
            'title' => 'Import Ambank Statement Transactions Details',
            'message' => 'You have successfully updated the Ambank Statement Transactions Details'
        ];
    }


    /**
     * @param Request $request
     * @return JsonResponse
     * @throws MalformedRequestException
     */
    public function logic(Request $request) : JsonResponse
    {

        $object = new DocumentObject('', $request->input('files'), '', ApprovalStatus::APPROVED, 'imports');

        foreach ($object->getFiles() as $file){
            $collection = Excel::toCollection(null, json_decode($file)->file_info->original->file, null, null, true);

            $statementDetails = $collection->first();

            $statementDateRange = trim(explode(':', $statementDetails[3][0])[1]);
            $dateFrom = trim(explode('-', $statementDateRange)[0]);
            $dateTo = trim(explode('-', $statementDateRange)[1]);
            $dateFrom = carbon::createFromFormat('d/m/Y', $dateFrom);
            $dateTo = carbon::createFromFormat('d/m/Y', $dateTo);
            $dateTo = carbon::parse($dateTo);            
            $totalDebit = $statementDetails[7][7];
            $totalCredit = $statementDetails[8][7];
            $totalTransactions = $totalDebit + $totalCredit;
            $beginBalance = ((float) str_replace(',', '', $statementDetails[6][10]));
            $endBalance = ((float) str_replace(',', '', $statementDetails[9][10]));

            $account = StatementAccount::where('number', 8881040198515)->first();

            if (!$account) {
                throw new Exception("Statement Account for CIEF LITE not found.");
            }

            $statement = AccountStatement::whereDate('date_from', $dateFrom)
                ->whereDate('date_to', $dateTo)
                ->where('total_amount', $totalTransactions)
                ->where('begin_balance', $beginBalance)
                ->where('end_balance', $endBalance)
                ->first();


            if(!$statement){
                $statement = new AccountStatement([
                    'date_from' => $dateFrom,
                    'date_to' => $dateTo,
                    'total_amount' => $totalTransactions,
                    'begin_balance' => $beginBalance,
                    'end_balance' => $endBalance,
                ]);
            }

            $account->statements()->save($statement);

            $collection->map(function ($sheet, $key) use ($statement) {
                if ($key === 0) {
                    $sheet->slice(13)->map(function ($row, $index) use ($statement, $sheet, $key) {
                        if (!$row[0] || !$row[11]) {
                            return;
                        }

                        $postingDate = carbon::createFromFormat('dM', trim($row[0]));

                        $description = trim($row[1]);

                        $nextRow = $sheet->slice(13)[$index + 1];

                        if (!$nextRow[0] && $nextRow[1]) {
                            foreach ($nextRow as $col) {
                                if ($col) {
                                    $description .= ' '. $col;
                                }
                            }
                        }

                        $descriptionArr = explode(',', $description);

                        $transactionDescription = array_key_exists(0, $descriptionArr) ? trim($descriptionArr[0]) : "";
                        $description2 = array_key_exists(1, $descriptionArr) ? trim($descriptionArr[1]) : "";
                        $description3 = array_key_exists(2, $descriptionArr) ? trim($descriptionArr[2]) : "";
                        $description4 = array_key_exists(3, $descriptionArr) ? trim($descriptionArr[3]) : "";
                        $description5 = array_key_exists(4, $descriptionArr) ? trim($descriptionArr[4]) : "";

                        if (count($descriptionArr) > 5) {
                            for ($i = 5; $i < count($descriptionArr); $i++) {
                                $description5 = $description5 . array_key_exists($i, $descriptionArr) ? trim($descriptionArr[$i]) : "";
                            }
                        }

                        $amount = $row[9] ? ((float) str_replace(',', '', trim($row[9]))) : (-((float) str_replace(',', '', $row[8])));
                        $endBalance = ((float) str_replace(',', '', $row[11]));
                        $transaction = new StatementTransaction([
                            'posting_date' => $postingDate,
                            'transaction_description' => $transactionDescription,
                            'transaction_description_2' => $description2,
                            'transaction_description_3' => $description3,
                            'transaction_description_4' => $description4,
                            'transaction_description_5' => $description5,
                            'amount' => $amount,
                            'end_balance' => $endBalance,
                        ]);

                        // Check if the transaction already exists for this statement
                        $existingTransaction = StatementTransaction::whereDate('posting_date', $postingDate)
                            ->where('amount', $amount)
                            ->where('transaction_description', $transactionDescription)
                            ->whereRaw("CAST(REPLACE(end_balance,',','') AS DECIMAL(15,2)) = ?",[$endBalance])
                            ->first();
                        
                        if (!$existingTransaction) {
                            $statement->transactions()->save($transaction);
                        }

                        return $transaction;
                    });
                } else {
                    if (strpos($sheet->first()->first(), "DATE") === false) {
                        return;
                    }

                    $extraColumn = 0;
                    if (count($sheet->first()) > 7 && $sheet->first()[7]) {
                        $extraColumn = 1;
                    }

                    $sheet->slice(1)->map(function ($row, $index) use ($statement, $sheet, $extraColumn, $key) {
                        if (!$row[0] || !$row[6 + $extraColumn]) {
                            return;
                        }

                        $postingDate = carbon::createFromFormat('dM', trim($row[0]));

                        $description = trim($row[1]);

                        $nextRow = $sheet->slice(1)[$index + 1];

                        if (!$nextRow[0] && $nextRow[1]) {
                            foreach ($nextRow as $col) {
                                if ($col) {
                                    $description .= ' '. $col;
                                }
                            }
                        }

                        $descriptionArr = explode(',', $description);

                        $transactionDescription = array_key_exists(0, $descriptionArr) ? trim($descriptionArr[0]) : "";
                        $description2 = array_key_exists(1, $descriptionArr) ? trim($descriptionArr[1]) : "";
                        $description3 = array_key_exists(2, $descriptionArr) ? trim($descriptionArr[2]) : "";
                        $description4 = array_key_exists(3, $descriptionArr) ? trim($descriptionArr[3]) : "";
                        $description5 = array_key_exists(4, $descriptionArr) ? trim($descriptionArr[4]) : "";

                        if (count($descriptionArr) > 5) {
                            for ($i = 5; $i < count($descriptionArr); $i++) {
                                $description5 = $description5 . array_key_exists($i, $descriptionArr) ? trim($descriptionArr[$i]) : "";
                            }
                        }

                        $amount = $row[5 + $extraColumn] ? ((float) str_replace(',', '', trim($row[5 + $extraColumn]))) : (-((float) str_replace(',', '', $row[4 + $extraColumn])));
                        $endBalance = ((float) str_replace(',', '', $row[6 + $extraColumn]));
                        $transaction = new StatementTransaction([
                            'posting_date' => $postingDate,
                            'transaction_description' => $transactionDescription,
                            'transaction_description_2' => $description2,
                            'transaction_description_3' => $description3,
                            'transaction_description_4' => $description4,
                            'transaction_description_5' => $description5,
                            'amount' => $amount,
                            'end_balance' => $endBalance,
                        ]);

                        // Check if the transaction already exists for this statement
                        $existingTransaction = StatementTransaction::whereDate('posting_date', $postingDate)
                            ->where('amount', $amount)
                            ->where('transaction_description', $transactionDescription)
                            ->whereRaw("CAST(REPLACE(end_balance,',','') AS DECIMAL(15,2)) = ?",[$endBalance])
                            ->first();

                        if (!$existingTransaction) {
                            $statement->transactions()->save($transaction);
                        }

                        return $transaction;
                    });
                }
            });
        }

        return $this->response([]);

    }

}