<?php

namespace App\Http\Controllers;

use App\Models\Rank;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class RankController extends Controller
{
    private function ensureAdmin(Request $request): ?JsonResponse
    {
        $user = $request->user();
        if (!$user || !$user->roles()->where('name', 'ROLE_ADMIN')->exists()) {
            return response()->json(['message' => 'Forbidden'], 403);
        }

        return null;
    }

    public function index(Request $request): JsonResponse
    {
        $ranks = Rank::query()
            ->orderBy('name')
            ->get()
            ->map(fn (Rank $rank) => [
                'id' => $rank->id,
                'name' => $rank->name,
                'badge_type' => $rank->badge_type,
                'badge_text' => $rank->badge_text,
                'badge_image_url' => $rank->badge_image_path
                    ? Storage::url($rank->badge_image_path)
                    : null,
            ]);

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

    public function store(Request $request): JsonResponse
    {
        if ($error = $this->ensureAdmin($request)) {
            return $error;
        }

        $data = $request->validate([
            'name' => ['required', 'string', 'max:100', 'unique:ranks,name'],
            'badge_type' => ['nullable', 'in:text,image'],
            'badge_text' => ['nullable', 'string', 'max:40'],
        ]);

        $badgeType = $data['badge_type'] ?? 'text';
        $badgeText = $badgeType === 'text'
            ? ($data['badge_text'] ?? $data['name'])
            : null;

        $rank = Rank::create([
            'name' => $data['name'],
            'badge_type' => $badgeType,
            'badge_text' => $badgeText,
        ]);

        return response()->json([
            'id' => $rank->id,
            'name' => $rank->name,
            'badge_type' => $rank->badge_type,
            'badge_text' => $rank->badge_text,
            'badge_image_url' => null,
        ], 201);
    }

    public function update(Request $request, Rank $rank): JsonResponse
    {
        if ($error = $this->ensureAdmin($request)) {
            return $error;
        }

        $data = $request->validate([
            'name' => ['required', 'string', 'max:100', "unique:ranks,name,{$rank->id}"],
            'badge_type' => ['nullable', 'in:text,image'],
            'badge_text' => ['nullable', 'string', 'max:40'],
        ]);

        $badgeType = $data['badge_type'] ?? $rank->badge_type ?? 'text';
        $badgeText = $badgeType === 'text'
            ? ($data['badge_text'] ?? $rank->badge_text ?? $data['name'])
            : null;

        if ($badgeType === 'text' && $rank->badge_image_path) {
            Storage::disk('public')->delete($rank->badge_image_path);
            $rank->badge_image_path = null;
        }

        $rank->update([
            'name' => $data['name'],
            'badge_type' => $badgeType,
            'badge_text' => $badgeText,
        ]);

        return response()->json([
            'id' => $rank->id,
            'name' => $rank->name,
            'badge_type' => $rank->badge_type,
            'badge_text' => $rank->badge_text,
            'badge_image_url' => $rank->badge_image_path
                ? Storage::url($rank->badge_image_path)
                : null,
        ]);
    }

    public function destroy(Request $request, Rank $rank): JsonResponse
    {
        if ($error = $this->ensureAdmin($request)) {
            return $error;
        }

        if ($rank->badge_image_path) {
            Storage::disk('public')->delete($rank->badge_image_path);
        }

        $rank->delete();

        return response()->json(null, 204);
    }

    public function uploadBadgeImage(Request $request, Rank $rank): JsonResponse
    {
        if ($error = $this->ensureAdmin($request)) {
            return $error;
        }

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

        if ($rank->badge_image_path) {
            Storage::disk('public')->delete($rank->badge_image_path);
        }

        $path = $data['file']->store('rank-badges', 'public');
        $rank->badge_type = 'image';
        $rank->badge_text = null;
        $rank->badge_image_path = $path;
        $rank->save();

        return response()->json([
            'id' => $rank->id,
            'badge_type' => $rank->badge_type,
            'badge_text' => $rank->badge_text,
            'badge_image_url' => Storage::url($path),
        ]);
    }
}