<?php

namespace App\Http\Controllers;

use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Storage;
use RuntimeException;

class UploadController extends Controller
{
    public function storeAvatar(Request $request): JsonResponse
    {
        $user = $request->user();
        if (!$user) {
            return response()->json(['message' => 'Unauthorized'], 401);
        }
        $this->ensurePublicStorageReady();

        $data = $request->validate([
            'file' => [
                'required',
                'image',
                'mimes:jpg,jpeg,png,gif,webp',
                'max:2048',
                'dimensions:max_width=150,max_height=150',
            ],
        ]);

        if ($user->avatar_path) {
            Storage::disk('public')->delete($user->avatar_path);
        }

        $path = $data['file']->store('avatars', 'public');
        $user->avatar_path = $path;
        $user->save();

        return response()->json([
            'path' => $path,
            'url' => Storage::url($path),
        ]);
    }

    public function storeLogo(Request $request): JsonResponse
    {
        $user = $request->user();
        if (!$user || !$user->roles()->where('name', 'ROLE_ADMIN')->exists()) {
            return response()->json(['message' => 'Forbidden'], 403);
        }
        $this->ensurePublicStorageReady();

        $data = $request->validate([
            'file' => ['required', 'file', 'mimes:jpg,jpeg,png,gif,webp,svg,ico', 'max:5120'],
        ]);

        $path = $data['file']->store('logos', 'public');

        return response()->json([
            'path' => $path,
            'url' => Storage::url($path),
        ]);
    }

    public function storeFavicon(Request $request): JsonResponse
    {
        $user = $request->user();
        if (!$user || !$user->roles()->where('name', 'ROLE_ADMIN')->exists()) {
            return response()->json(['message' => 'Forbidden'], 403);
        }
        $this->ensurePublicStorageReady();

        $data = $request->validate([
            'file' => ['required', 'file', 'mimes:png,ico', 'max:2048'],
        ]);

        $path = $data['file']->store('favicons', 'public');

        return response()->json([
            'path' => $path,
            'url' => Storage::url($path),
        ]);
    }

    private function ensurePublicStorageReady(): void
    {
        $storagePublic = storage_path('app/public');
        $publicStorage = public_path('storage');

        if (file_exists($storagePublic) && !is_dir($storagePublic)) {
            @rename($storagePublic, $storagePublic.'.bak.'.date('Ymd_His'));
        }
        if (!is_dir($storagePublic) && !@mkdir($storagePublic, 0775, true) && !is_dir($storagePublic)) {
            throw new RuntimeException('Failed to create storage/app/public directory.');
        }

        if (is_link($publicStorage)) {
            $target = readlink($publicStorage);
            $resolved = $target !== false ? realpath(dirname($publicStorage).DIRECTORY_SEPARATOR.$target) : false;
            $expected = realpath($storagePublic);
            if ($resolved === $expected) {
                $this->ensureUploadSubdirs($storagePublic);
                return;
            }
            @unlink($publicStorage);
        } elseif (is_dir($publicStorage)) {
            File::copyDirectory($publicStorage, $storagePublic);
            File::deleteDirectory($publicStorage);
        } elseif (file_exists($publicStorage)) {
            @rename($publicStorage, $publicStorage.'.bak.'.date('Ymd_His'));
        }

        if (!@symlink($storagePublic, $publicStorage) && !is_link($publicStorage)) {
            throw new RuntimeException('Failed to create public/storage symlink.');
        }

        $this->ensureUploadSubdirs($storagePublic);
    }

    private function ensureUploadSubdirs(string $storagePublic): void
    {
        foreach (['avatars', 'favicons', 'logos', 'rank-badges'] as $dir) {
            $path = $storagePublic.DIRECTORY_SEPARATOR.$dir;
            if (!is_dir($path)) {
                @mkdir($path, 0775, true);
            }
        }
    }
}