<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\DocumentHistory;
use Illuminate\Http\Request;

/**
 * @group Document Management
 *
 * APIs for managing documents and their history.
 */
class DocumentHistoryController extends Controller
{
    /**
     * Get Document History
     *
     * Retrieve the history of a document based on file name or table reference.
     *
     * @bodyParam table string The name of the table (e.g., document_revisions). Example: document_revisions
     * @bodyParam column string The name of the column (e.g., pdf_spool_iso). Example: pdf_spool_iso
     * @bodyParam row_id integer The ID of the row. Example: 3021
     * @bodyParam file_name string The name of the file to search for. Example: MST-80-AH01PR-FE31.803.pdf
     *
     * @response {
     *  "id": 345,
     *  "user_name": "Linga Samiii",
     *  "action": "Archive",
     *  "file_name": "MST-80-AH01PR-FE31.803.pdf",
     *  "file_size": "474.4 KB",
     *  "moved_from": "001_Drawings",
     *  "moved_to": "Archive/001_Drawings",
     *  "action_date": "2025-07-19 16:11:00",
     *  "file_path": "storage/documents/...",
     *  "notes": "File replaced with new version..."
     * }
     */
    public function index(Request $request)
    {
        $table = $request->input('table');
        $column = $request->input('column');
        $row_id = $request->input('row_id');
        $file_name = $request->input('file_name');

        $query = DocumentHistory::query();


        if ($file_name) {
            // File name'e göre arama
            $base_name = str_replace(".pdf", "", $file_name);
            // Sadece tam dosya adlarını veya '_' ile ayrılmış arşiv adlarını (örn: _2025_08_30...) eşleştir
            $query->where(function ($q) use ($base_name, $file_name) {
                $q->where('file_name', $file_name)
                    ->orWhere('file_name', 'LIKE', $base_name . '_%.pdf');
            });
        } elseif ($table && $row_id) {
            // Table ve row_id'ye göre dosyayı bulup arama yap
            try {
                $row = \Illuminate\Support\Facades\DB::table($table)->find($row_id);

                if ($row) {
                    $filenames = [];

                    if ($column && isset($row->$column)) {
                        // Belirli bir kolon varsa
                        $value = $row->$column;
                        if ($value && is_string($value)) {
                            $filenames[] = basename($value);
                        }
                    } else {
                        // Kolon belirtilmemişse, olası dosya kolonlarını tara
                        foreach ((array) $row as $key => $value) {
                            if ($value && is_string($value) && preg_match('/\.(pdf|xls|xlsx|doc|docx|jpg|png|jpeg)$/i', $value)) {
                                $filenames[] = basename($value);
                            }
                        }
                    }

                    if (!empty($filenames)) {
                        $query->whereIn('file_name', $filenames);
                    } else {
                        // Dosya bulunamadıysa boş dön
                        return response()->json([]);
                    }
                } else {
                    return response()->json([]);
                }
            } catch (\Exception $e) {
                // Tablo hatası vs.
                return response()->json([]);
            }
        } else {
            // Hiçbir geçerli filtre yoksa boş döndür
            return response()->json([]);
        }


        $documentHistory = $query->orderBy('action_date', 'DESC')
            ->get()
            ->map(function ($item) {
                return [
                    'id' => $item->id,
                    'user_name' => $item->user_name,
                    'action' => $item->action,
                    'file_name' => $item->file_name,
                    'file_size' => $item->file_size,
                    'moved_from' => $item->moved_from,
                    'moved_to' => $item->moved_to,
                    'action_date' => $item->action_date,
                    'file_path' => $item->file_path,
                    'notes' => $item->notes
                ];
            });

        return response()->json($documentHistory);
    }
}