<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Result;
use App\Imports\ResultsImport;
use Maatwebsite\Excel\Facades\Excel;

class AdminResultsController extends Controller
{
    
    public function index(Request $request)
       {
            $query = Result::query();

             
            if ($request->filled('search')) {
                $search = $request->search;
                $query->where(function ($q) use ($search) {
                    $q->where('student_log_id', 'like', "%{$search}%")
                    ->orWhere('module_code', 'like', "%{$search}%")
                    ->orWhere('module_name', 'like', "%{$search}%");
                });
            }

        
            if ($request->filled('academic_year')) {
                $query->where('academic_year', 'like', "%{$request->academic_year}%");
            }

        
            if ($request->filled('status')) {
                $query->where('status', $request->status);
            }

            
            $results = $query->orderBy('id', 'desc')->paginate(15)->withQueryString();

            return view('admin.adminresults', compact('results'));
       }

    public function store(Request $request)
       {
            $validated = $request->validate([
                'student_log_id' => 'required|string|max:255',
                'module_code'    => 'required|string|max:255',
                'module_name'    => 'required|string|max:255',
                'academic_year'  => 'required|string|max:255',
                'semester'       => 'required|string|max:255',
                'marks'          => 'required|numeric|min:0|max:100',
                'grade'          => 'required|string|max:10',
                'status'         => 'required|in:Pass,Fail',
            ]);

            Result::create($validated);

            return redirect()->route('admin.results')->with('success', 'Exam result added successfully.');
       }

    public function update(Request $request, $id)
    {
        $validated = $request->validate([
            'student_log_id' => 'required|string|max:255',
            'module_code'    => 'required|string|max:255',
            'module_name'    => 'required|string|max:255',
            'academic_year'  => 'required|string|max:255',
            'semester'       => 'required|string|max:255',
            'marks'          => 'required|numeric|min:0|max:100',
            'grade'          => 'required|string|max:10',
            'status'         => 'required|in:Pass,Fail',
        ]);

        $result = Result::findOrFail($id);
        $result->update($validated);

        return redirect()->route('admin.results')->with('success', 'Exam result updated successfully.');
    }

    public function destroy($id)
    {
        $result = Result::findOrFail($id);
        $result->delete();

        return redirect()->route('admin.results')->with('success', 'Exam result deleted successfully.');
    }

    public function import(Request $request)
    {
        $request->validate([
            'excel_file' => 'required|mimes:xlsx,xls,csv|max:2048'
        ]);

       
        Excel::import(new ResultsImport, $request->file('excel_file'));

      
        return redirect()->route('admin.results')->with('success', 'Excel file imported successfully!');
    }
}