<?php

namespace App\Http\Controllers;

use App\Models\AppVersion;
use App\Traits\HandlesImageUpload;
use Illuminate\Http\Request;

class AppVersionController extends Controller
{
    use HandlesImageUpload;

    // Admin list — every version, highest version_code first.
    public function index()
    {
        return response()->json([
            'data' => AppVersion::with('image')->orderByDesc('version_code')->get(),
        ]);
    }

    // App side: the newest version (highest version_code) for update checks.
    public function latest()
    {
        return response()->json([
            'data' => AppVersion::with('image')->orderByDesc('version_code')->first(),
        ]);
    }

    public function store(Request $request)
    {
        $data = $request->validate([
            'title' => 'required|string|max:255',
            'description' => 'nullable|string',
            'version_name' => 'required|string|max:255',
            'version_code' => 'required|integer|min:0',
            'link' => 'nullable|string|max:500',
            'image_id' => 'nullable|exists:images,id',
            'image' => 'nullable|file|extensions:jpg,jpeg,png,gif,webp,bmp,svg|max:8192',
        ]);

        // An uploaded image file takes precedence over a provided image_id.
        $data['image_id'] = $this->uploadedImageId($request) ?? ($data['image_id'] ?? null);

        $version = AppVersion::create($data);

        return response()->json([
            'message' => 'Version created successfully',
            'data' => $version->load('image'),
        ], 201);
    }

    public function show($id)
    {
        return response()->json(
            AppVersion::with('image')->findOrFail($id)
        );
    }

    public function update(Request $request, $id)
    {
        $version = AppVersion::findOrFail($id);

        $data = $request->validate([
            'title' => 'sometimes|string|max:255',
            'description' => 'nullable|string',
            'version_name' => 'sometimes|string|max:255',
            'version_code' => 'sometimes|integer|min:0',
            'link' => 'nullable|string|max:500',
            'image_id' => 'nullable|exists:images,id',
            'image' => 'nullable|file|extensions:jpg,jpeg,png,gif,webp,bmp,svg|max:8192',
        ]);

        // An uploaded image file takes precedence over a provided image_id.
        if (($uploadedImageId = $this->uploadedImageId($request)) !== null) {
            $data['image_id'] = $uploadedImageId;
        }

        $version->update($data);

        return response()->json([
            'message' => 'Version updated successfully',
            'data' => $version->load('image'),
        ]);
    }

    public function destroy($id)
    {
        $version = AppVersion::findOrFail($id);
        $version->delete();

        return response()->json(['message' => 'Version deleted successfully']);
    }
}