<?php

namespace Tests\Feature;

use App\Enums\ChannelType;
use App\Enums\EventState;
use App\Ingest\EventUpserter;
use App\Models\Event;
use App\Models\Source;
use App\Models\User;
use Carbon\CarbonImmutable;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class EventUpserterTest extends TestCase
{
    use RefreshDatabase;

    private Source $source;
    private EventUpserter $upserter;

    protected function setUp(): void
    {
        parent::setUp();
        config(['hado.default_tz' => 'America/Montevideo']);
        CarbonImmutable::setTestNow('2026-09-01T12:00:00-03:00');
        $this->source = Source::create(['name' => 'docs', 'token_hash' => hash('sha256', 'x')]);
        $this->upserter = app(EventUpserter::class);
    }

    protected function tearDown(): void
    {
        CarbonImmutable::setTestNow();
        parent::tearDown();
    }

    private function item(array $over = []): array
    {
        return array_replace([
            'user' => 'nikita', 'source_ref' => 'document:918', 'topic' => 'expiry',
            'due_at' => '2026-09-30', 'fire_at' => '2026-08-31', 'after_due' => 'keep',
            'payload' => ['title' => 'Седула протухает 30 сен'],
        ], $over);
    }

    public function test_creates_event_user_and_web_channel_with_computed_state(): void
    {
        $result = $this->upserter->upsert($this->source, [$this->item()]);

        $this->assertSame([['source_ref' => 'document:918', 'topic' => 'expiry', 'id' => 1, 'state' => 'preparing']], $result);
        $user = User::where('login', 'nikita')->firstOrFail();
        $this->assertSame('America/Montevideo', $user->tz);
        $this->assertSame(ChannelType::Web, $user->channels()->sole()->type);
        $event = Event::sole();
        $this->assertSame(EventState::Preparing, $event->state);
        $this->assertTrue($event->quiet_until->lt(CarbonImmutable::now()));
    }

    public function test_same_due_updates_fields_and_keeps_terminal_state(): void
    {
        $this->upserter->upsert($this->source, [$this->item()]);
        Event::sole()->update(['state' => EventState::Done, 'done_at' => now()]);

        $this->upserter->upsert($this->source, [$this->item(['payload' => ['title' => 'Новый заголовок'], 'fire_at' => '2026-09-15'])]);

        $event = Event::sole();
        $this->assertSame(EventState::Done, $event->state);
        $this->assertSame('Новый заголовок', $event->payload['title']);
        $this->assertSame('2026-09-15', $event->fire_on->format('Y-m-d'));
    }

    public function test_same_due_recomputes_non_terminal_state(): void
    {
        $this->upserter->upsert($this->source, [$this->item()]);
        $this->assertSame(EventState::Preparing, Event::sole()->state);

        $this->upserter->upsert($this->source, [$this->item(['fire_at' => '2026-09-20'])]);
        $this->assertSame(EventState::Scheduled, Event::sole()->state, 'старт отодвинули в будущее');
    }

    public function test_new_due_resets_even_from_terminal(): void
    {
        $this->upserter->upsert($this->source, [$this->item()]);
        Event::sole()->update(['state' => EventState::Done, 'done_at' => now(), 'quiet_until' => CarbonImmutable::now()->addDays(3)]);

        $this->upserter->upsert($this->source, [$this->item(['due_at' => '2026-10-15'])]);

        $event = Event::sole();
        $this->assertSame(EventState::Preparing, $event->state);
        $this->assertNull($event->done_at);
        $this->assertTrue($event->quiet_until->lt(CarbonImmutable::now()));
        $this->assertSame('2026-10-15', $event->due_date->format('Y-m-d'));
    }

    public function test_reschedule_on_the_day_resets_today_event(): void
    {
        // Задокументированное поведение: перенос в день срока сбрасывает состояние.
        // Поэтому повторяющиеся события кладут период в topic, а не меняют due_at.
        CarbonImmutable::setTestNow('2026-09-30T10:00:00-03:00');
        $this->upserter->upsert($this->source, [$this->item()]);
        $this->assertSame(EventState::Today, Event::sole()->state);

        $this->upserter->upsert($this->source, [$this->item(['due_at' => '2027-09-30', 'fire_at' => '2027-08-31'])]);
        $this->assertSame(EventState::Scheduled, Event::sole()->state);
    }

    public function test_occurrences_are_independent_rows(): void
    {
        CarbonImmutable::setTestNow('2026-10-05T10:00:00-03:00');
        $this->upserter->upsert($this->source, [
            $this->item(['source_ref' => 'rent', 'topic' => 'payment:2026-09', 'due_at' => '2026-09-10', 'fire_at' => '2026-09-10']),
            $this->item(['source_ref' => 'rent', 'topic' => 'payment:2026-10', 'due_at' => '2026-10-10', 'fire_at' => '2026-10-10']),
        ]);

        $states = Event::orderBy('topic')->pluck('state')->map->value->all();
        $this->assertSame(['overdue', 'scheduled'], $states);
    }

    public function test_fixed_due_is_stored_as_instant(): void
    {
        $this->upserter->upsert($this->source, [$this->item(['due_at' => '2026-09-10T08:15+02:00', 'fire_at' => '2026-09-03'])]);

        $event = Event::sole();
        $this->assertSame('fixed', $event->due_mode->value);
        $this->assertSame('2026-09-10T06:15:00+00:00', $event->due_instant->utc()->toIso8601String());
        $this->assertNull($event->due_date);
    }

    public function test_withdraw_marks_withdrawn(): void
    {
        $this->upserter->upsert($this->source, [$this->item()]);

        $this->upserter->withdraw($this->upserter->find($this->source, 'document:918', 'expiry'));

        $this->assertSame(EventState::Withdrawn, Event::sole()->state);
        $this->assertNull($this->upserter->find($this->source, 'document:918', 'other'));
    }
}