<?php

namespace App\Http\Controllers;

use App\Models\Todo;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use App\Support\ApiDataTransformer;

class TodoController extends Controller
{
    public function index()
    {
        $todos = Todo::with('type')->orderBy('due_date')->get();
        return ApiDataTransformer::snakeToCamel($todos->toArray());
    }

    public function show(string $id)
    {
        return Todo::with('type')->findOrFail($id);
    }

    public function store(Request $request)
    {
        $data = $request->validate([
            'id' => 'nullable|string',
            'etag' => 'nullable|string',
            'title' => 'required|string',
            'description' => 'nullable|string',
            'type_id' => 'nullable|exists:todo_types,id',
            'url' => 'nullable|url',
            'due_date' => 'nullable|date',
            'recurring' => 'nullable|string',
            'priority' => 'nullable|integer',
            'status' => 'nullable|string',
            'parent' => 'nullable|string',
            'object' => 'nullable|string',
        ]);

        $data['id'] = $data['id'] ?? (string) Str::uuid();
        $now = now();
        $data['created_at'] = $data['created_at'] ?? $now;
        $data['last_modified'] = $now;

        $todo = Todo::create($data);

        return response()->json($todo, 201);
    }

    public function update(Request $request, string $id)
    {
        $todo = Todo::findOrFail($id);

        $data = $request->validate([
            'etag' => 'nullable|string',
            'title' => 'sometimes|required|string',
            'description' => 'nullable|string',
            'type_id' => 'nullable|exists:todo_types,id',
            'url' => 'nullable|url',
            'due_date' => 'nullable|date',
            'recurring' => 'nullable|string',
            'priority' => 'nullable|integer',
            'status' => 'nullable|string',
            'parent' => 'nullable|string',
            'object' => 'nullable|string',
        ]);

        $data['last_modified'] = now();

        $todo->update($data);

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

    public function destroy(string $id)
    {
        $todo = Todo::findOrFail($id);
        $todo->delete();

        return response()->noContent();
    }
}