<?php

namespace Modules\Webstatement\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Log;
use Modules\Webstatement\Jobs\CombinePdfJob;
use Modules\Webstatement\Models\Account;

class CombinePdfController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        return view('webstatement::index');
    }

    /**
     * Combine PDF files from r14 and r23 folders for all accounts
     *
     * @param Request $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function combinePdfs(Request $request)
    {
        // Get period from request or use current period
        $period = $request->input('period', date('Ym'));

        // Get all accounts
        $accounts = Account::all();
        $processedCount = 0;
        $skippedCount = 0;
        $errorCount = 0;

        foreach ($accounts as $account) {
            $branchCode = $account->branch_code;
            $accountNumber = $account->account_number;

            // Define file paths
            $r14Path = storage_path("app/r14/{$period}/{$branchCode}/{$accountNumber}_{$period}.pdf");
            $r23Path = storage_path("app/r23/{$period}/{$branchCode}/{$accountNumber}_{$period}.pdf");
            $outputDir = storage_path("app/combine/{$period}/{$branchCode}");
            $outputFilename = "{$accountNumber}_{$period}.pdf";

            // Check if files exist
            $r14Exists = File::exists($r14Path);
            $r23Exists = File::exists($r23Path);

            // Skip if neither file exists
            if (!$r14Exists && !$r23Exists) {
                Log::warning("No PDF files found for account {$accountNumber}");
                $skippedCount++;
                continue;
            }

            // If both files exist, combine them
            if ($r14Exists && $r23Exists) {
                Log::info("Combining PDFs for account {$accountNumber}");
                $pdfFiles = [$r14Path, $r23Path];
            }
            // If only one file exists, just apply password protection
            else {
                Log::info("Applying password protection to single PDF for account {$accountNumber}");
                $pdfFile = $r14Exists ? $r14Path : $r23Path;
                $pdfFiles = [$pdfFile];
            }

            try {
                // Use the account number as password
                $password = $accountNumber;

                // Dispatch job to combine PDFs or apply password protection
                CombinePdfJob::dispatch($pdfFiles, $outputDir, $outputFilename, $password);
                $processedCount++;
            } catch (\Exception $e) {
                Log::error("Error processing PDF for account {$accountNumber}: {$e->getMessage()}");
                $errorCount++;
            }
        }

        return response()->json([
            'message' => 'PDF combination process has been queued',
            'processed' => $processedCount,
            'skipped' => $skippedCount,
            'errors' => $errorCount,
            'period' => $period
        ]);
    }
}