<?php

namespace Tests\Feature;

use App\Models\AttendanceRecord;
use App\Models\DrawResult;
use App\Models\DrawSession;
use App\Models\Member;
use App\Models\Prize;
use App\Models\User;
use App\Services\DrawService;
use Database\Seeders\RoleUserSeeder;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class DrawTest extends TestCase
{
    use RefreshDatabase;

    private DrawService $service;
    private DrawSession $session;
    private User $petugas;

    protected function setUp(): void
    {
        parent::setUp();
        $this->seed(RoleUserSeeder::class);
        $this->service = app(DrawService::class);
        $this->session = DrawSession::active();
        $this->petugas = User::where('email', 'cabutan@koipb.test')->first();
    }

    private function attendedMember(array $attrs = []): Member
    {
        $member = Member::factory()->create($attrs);
        AttendanceRecord::create(['member_id' => $member->id, 'attended_at' => now()]);

        return $member;
    }

    public function test_only_attended_members_are_eligible(): void
    {
        $hadir = $this->attendedMember();
        $tidakHadir = Member::factory()->create();

        $pool = $this->service->eligibleMembers($this->session);

        $this->assertTrue($pool->contains('id', $hadir->id));
        $this->assertFalse($pool->contains('id', $tidakHadir->id));
    }

    public function test_spin_creates_pending_result_and_marks_prize(): void
    {
        $this->attendedMember();
        $prize = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);

        $result = $this->service->spin($prize, $this->session, $this->petugas);

        $this->assertEquals(DrawResult::STATUS_PENDING, $result->status);
        $this->assertEquals(Prize::STATUS_SEDANG, $prize->fresh()->status);
    }

    public function test_confirmed_winner_cannot_win_again(): void
    {
        $member = $this->attendedMember();
        $prize1 = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);
        $prize2 = Prize::create(['nama_hadiah' => 'Radio', 'draw_order' => 2]);

        $r1 = $this->service->spin($prize1, $this->session, $this->petugas);
        $this->service->confirm($r1, $this->petugas);

        // Member sudah menang -> tidak lagi dalam pool
        $this->assertFalse($this->service->eligibleMembers($this->session)->contains('id', $member->id));

        // Tiada peserta layak lain -> spin prize2 patut gagal
        $this->expectException(\RuntimeException::class);
        $this->service->spin($prize2, $this->session, $this->petugas);
    }

    public function test_db_blocks_duplicate_confirmed_winner(): void
    {
        $member = $this->attendedMember();
        $prize1 = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);
        $prize2 = Prize::create(['nama_hadiah' => 'Radio', 'draw_order' => 2]);

        $r1 = $this->service->spin($prize1, $this->session, $this->petugas);
        $this->service->confirm($r1, $this->petugas);

        // Cuba paksa member sama menang prize2 (langkau pool) -> unique index DB halang
        $r2 = DrawResult::create([
            'draw_session_id' => $this->session->id,
            'prize_id' => $prize2->id,
            'member_id' => $member->id,
            'status' => DrawResult::STATUS_PENDING,
            'spun_at' => now(),
        ]);

        $this->expectException(\Illuminate\Database\UniqueConstraintViolationException::class);
        $r2->update([
            'status' => DrawResult::STATUS_CONFIRMED,
            'confirmed_member_id' => $member->id,
            'confirmed_prize_id' => $prize2->id,
        ]);
    }

    public function test_cancelled_draw_allows_redraw(): void
    {
        $member1 = $this->attendedMember();
        $member2 = $this->attendedMember();
        $prize = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);

        $r1 = $this->service->spin($prize, $this->session, $this->petugas);
        $this->service->cancel($r1, $this->petugas, 'Tiada di dewan');

        // Hadiah jadi redraw_required tetapi masih available
        $prize->refresh();
        $this->assertEquals(Prize::STATUS_REDRAW, $prize->status);
        $this->assertTrue($prize->isAvailable());
        $this->assertEquals(1, $prize->redraw_count);

        // Boleh spin semula
        $r2 = $this->service->spin($prize, $this->session, $this->petugas);
        $this->assertEquals(DrawResult::STATUS_PENDING, $r2->status);
        $this->assertEquals(2, $r2->attempt_number);

        // Default setting (return_cancelled_to_pool = true): peserta dibatalkan kekal dalam pool
        $this->assertTrue($this->service->eligibleMembers($this->session)->contains('id', $member1->id));
    }

    public function test_setting_can_remove_cancelled_member_from_pool(): void
    {
        // Tetapan admin: keluarkan peserta dibatalkan dari pool (tiada peluang kedua)
        $this->session->update(['return_cancelled_to_pool' => false]);

        $member1 = $this->attendedMember();
        $member2 = $this->attendedMember();
        $prize = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);

        $r1 = $this->service->spin($prize, $this->session, $this->petugas);
        $cancelledId = $r1->member_id;
        $this->service->cancel($r1, $this->petugas, 'Tiada di dewan');

        $pool = $this->service->eligibleMembers($this->session->fresh());

        // Peserta yang dibatalkan TIDAK lagi dalam pool; peserta lain masih ada
        $this->assertFalse($pool->contains('id', $cancelledId));
        $remainingId = $cancelledId === $member1->id ? $member2->id : $member1->id;
        $this->assertTrue($pool->contains('id', $remainingId));
    }

    public function test_cannot_spin_already_confirmed_prize(): void
    {
        $this->attendedMember();
        $this->attendedMember();
        $prize = Prize::create(['nama_hadiah' => 'TV', 'draw_order' => 1]);

        $r1 = $this->service->spin($prize, $this->session, $this->petugas);
        $this->service->confirm($r1, $this->petugas);

        $this->expectException(\RuntimeException::class);
        $this->service->spin($prize, $this->session, $this->petugas);
    }
}