<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\DocketEntry;
use App\Models\Document;
use Illuminate\Http\Request;
use Illuminate\Http\RedirectResponse;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;

class DocumentController extends Controller
{
    /**
     * Store a newly uploaded document.
     */
    public function store(Request $request, DocketEntry $docketEntry): RedirectResponse
    {
        try {
            \Log::info('=== PDF UPLOAD DEBUG START ===');
            \Log::info('Docket Entry ID: ' . $docketEntry->id);
            \Log::info('Request has file: ' . ($request->hasFile('file') ? 'YES' : 'NO'));
            
            if ($request->hasFile('file')) {
                $file = $request->file('file');
                \Log::info('File original name: ' . $file->getClientOriginalName());
                \Log::info('File size: ' . $file->getSize());
                \Log::info('File mime type: ' . $file->getMimeType());
                \Log::info('File is valid: ' . ($file->isValid() ? 'YES' : 'NO'));
            }

            $validated = $request->validate([
                'file' => 'required|file|mimes:pdf|max:512000', // 500MB max
                'title' => 'required|string|max:255',
                'summary' => 'nullable|string',
            ]);
            \Log::info('Validation passed');

            // Get the uploaded file
            $file = $request->file('file');
            
            // Generate unique filename
            $storedFilename = Str::uuid() . '.pdf';
            \Log::info('Generated filename: ' . $storedFilename);
            
            // Store file in storage/app/public/documents
            \Log::info('Attempting to store file...');
            $filePath = $file->storeAs('documents', $storedFilename, 'public');
            \Log::info('File stored at: ' . $filePath);
            
            // Get the highest display order for this entry
            $maxOrder = $docketEntry->documents()->max('display_order') ?? -1;
            \Log::info('Max display order: ' . $maxOrder);
            
            // Create document record
            \Log::info('Creating document record...');
            $document = Document::create([
                'docket_entry_id' => $docketEntry->id,
                'title' => $validated['title'],
                'original_filename' => $file->getClientOriginalName(),
                'stored_filename' => $storedFilename,
                'file_path' => $filePath,
                'file_size' => $file->getSize(),
                'mime_type' => $file->getMimeType(),
                'summary' => $validated['summary'] ?? null,
                'display_order' => $maxOrder + 1,
            ]);
            \Log::info('Document created with ID: ' . $document->id);
            \Log::info('=== PDF UPLOAD DEBUG END (SUCCESS) ===');

            return redirect()->route('admin.docket-entries.show', $docketEntry->id)
                ->with('success', 'Document uploaded successfully.');
                
        } catch (\Exception $e) {
            \Log::error('=== PDF UPLOAD ERROR ===');
            \Log::error('Error message: ' . $e->getMessage());
            \Log::error('Error file: ' . $e->getFile());
            \Log::error('Error line: ' . $e->getLine());
            \Log::error('Stack trace: ' . $e->getTraceAsString());
            \Log::error('=== PDF UPLOAD DEBUG END (ERROR) ===');
            
            return redirect()->route('admin.docket-entries.show', $docketEntry->id)
                ->with('error', 'Upload failed: ' . $e->getMessage());
        }
    }

    /**
     * Remove the specified document.
     */
    public function destroy(Document $document): RedirectResponse
    {
        $docketEntryId = $document->docket_entry_id;
        
        // Delete the file from storage
        if (Storage::disk('public')->exists($document->file_path)) {
            Storage::disk('public')->delete($document->file_path);
        }
        
        // Delete the database record
        $document->delete();

        return redirect()->route('admin.docket-entries.show', $docketEntryId)
            ->with('success', 'Document deleted successfully.');
    }
}