<?php

namespace App\Http\Controllers\Api;

use App\Enums\DueMode;
use App\Enums\EventState;
use App\Http\Controllers\Controller;
use App\Http\Requests\UpsertEventsRequest;
use App\Ingest\EventUpserter;
use App\Models\Event;
use App\Models\Source;
use App\Scheduling\DueResolver;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Response;

class EventsController extends Controller
{
    public function __construct(private readonly EventUpserter $upserter) {}

    public function upsert(UpsertEventsRequest $request): JsonResponse
    {
        /** @var Source $source */
        $source = $request->attributes->get('source');

        return response()->json(['events' => $this->upserter->upsert($source, $request->items())]);
    }

    public function show(Request $request): JsonResponse
    {
        $event = $this->lookup($request);

        return response()->json(self::present($event));
    }

    public function destroy(Request $request): Response
    {
        $event = $this->lookup($request);
        $event->update(['state' => EventState::Withdrawn]);

        return response()->noContent();
    }

    private function lookup(Request $request): Event
    {
        $request->validate(['source_ref' => ['required', 'string'], 'topic' => ['sometimes', 'nullable', 'string']]);
        /** @var Source $source */
        $source = $request->attributes->get('source');
        $event = $this->upserter->find($source, $request->query('source_ref'), (string) $request->query('topic', ''));
        abort_if($event === null, 404, 'Событие не найдено');

        return $event;
    }

    /** @return array<string,mixed> */
    public static function present(Event $event): array
    {
        return [
            'id' => $event->id,
            'source_ref' => $event->source_ref,
            'topic' => $event->topic,
            'state' => $event->state->value,
            'due_at' => self::dueAt($event),
            'fire_at' => $event->fire_on->format('Y-m-d'),
            'after_due' => $event->after_due->value,
            'payload' => $event->payload,
            'done_at' => $event->done_at?->toIso8601String(),
        ];
    }

    private static function dueAt(Event $event): string
    {
        if ($event->due_mode === DueMode::Fixed) {
            return $event->due_instant->toIso8601String();
        }
        $date = $event->due_date->format('Y-m-d');

        return $event->due_time === DueResolver::WHOLE_DAY ? $date : $date.'T'.substr($event->due_time, 0, 5);
    }
}