<?php

declare(strict_types=1);

use App\Enums\CreatorMilestoneType;
use App\Models\Artwork;
use App\Models\CreatorEra;
use App\Models\User;
use App\Services\Profile\CreatorComebackService;
use App\Services\Profile\CreatorEraService;
use App\Services\Profile\CreatorJourneyService;
use App\Services\Profile\CreatorStreakService;
use Carbon\Carbon;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Queue;

uses(RefreshDatabase::class);

// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------

/**
 * Build a fake artwork row (stdClass) matching the shape returned by
 * CreatorJourneyService::publicArtworkRows().
 */
function makeArtworkRow(int $id, string $publishedAt, array $overrides = []): object
{
    return (object) array_merge([
        'id'             => $id,
        'title'          => "Artwork #{$id}",
        'slug'           => "artwork-{$id}",
        'published_at'   => $publishedAt,
        'thumbnail_url'  => null,
        'art_url'        => null,
        'url'            => "/art/{$id}/artwork-{$id}",
        'downloads'      => 0,
        'views'          => 0,
        'favorites'      => 0,
    ], $overrides);
}

/**
 * Build the $makeMilestoneRow closure expected by all v2 services.
 * Returns a plain array so tests can inspect it easily.
 */
function makeMilestoneRowFn(): callable
{
    return function (
        int $userId,
        CreatorMilestoneType $type,
        \Carbon\CarbonInterface $occurredAt,
        array $payload,
        ?int $relatedArtworkId,
        \Carbon\CarbonInterface $computedAt,
    ): array {
        return [
            'user_id'            => $userId,
            'type'               => $type->value,
            'occurred_at'        => $occurredAt->toDateTimeString(),
            'occurred_year'      => (int) $occurredAt->format('Y'),
            'related_artwork_id' => $relatedArtworkId,
            'is_public'          => true,
            'priority'           => $type->priority(),
            'payload_json'       => json_encode($payload),
            'computed_at'        => $computedAt->toDateTimeString(),
        ];
    };
}

// ---------------------------------------------------------------------------
// CreatorComebackService
// ---------------------------------------------------------------------------

describe('CreatorComebackService', function () {
    it('returns empty when fewer than 2 artworks', function () {
        $svc = app(CreatorComebackService::class);
        $rows = $svc->calculateComebacks(
            collect([makeArtworkRow(1, '2022-01-01')]),
            1,
            now(),
            makeMilestoneRowFn(),
        );
        expect($rows)->toBeEmpty();
    });

    it('detects a minor comeback (180–364 day gap)', function () {
        $svc = app(CreatorComebackService::class);
        $artworks = collect([
            makeArtworkRow(1, '2022-01-01'),
            makeArtworkRow(2, '2022-08-01'), // ~212 days later
        ]);

        $rows = $svc->calculateComebacks($artworks, 99, now(), makeMilestoneRowFn());

        expect($rows)->toHaveCount(1);
        expect($rows[0]['type'])->toBe(CreatorMilestoneType::ComebackMinor->value);
    });

    it('detects a major comeback (365–1094 day gap)', function () {
        $svc = app(CreatorComebackService::class);
        $artworks = collect([
            makeArtworkRow(1, '2020-01-01'),
            makeArtworkRow(2, '2021-06-01'), // ~517 days
        ]);

        $rows = $svc->calculateComebacks($artworks, 99, now(), makeMilestoneRowFn());

        expect($rows)->toHaveCount(1);
        expect($rows[0]['type'])->toBe(CreatorMilestoneType::ComebackMajor->value);
    });

    it('detects a legendary comeback (1095+ day gap)', function () {
        $svc = app(CreatorComebackService::class);
        $artworks = collect([
            makeArtworkRow(1, '2018-01-01'),
            makeArtworkRow(2, '2021-08-15'), // ~1326 days
        ]);

        $rows = $svc->calculateComebacks($artworks, 99, now(), makeMilestoneRowFn());

        expect($rows)->toHaveCount(1);
        expect($rows[0]['type'])->toBe(CreatorMilestoneType::ComebackLegendary->value);
    });

    it('does not fire a comeback for a gap shorter than 180 days', function () {
        $svc = app(CreatorComebackService::class);
        $artworks = collect([
            makeArtworkRow(1, '2023-01-01'),
            makeArtworkRow(2, '2023-05-01'), // ~120 days
            makeArtworkRow(3, '2023-07-01'), // ~61 days
        ]);

        $rows = $svc->calculateComebacks($artworks, 99, now(), makeMilestoneRowFn());

        expect($rows)->toBeEmpty();
    });

    it('fires one milestone per comeback gap even if multiple thresholds match', function () {
        $svc = app(CreatorComebackService::class);
        // 3+ year gap → only legendary, not also major or minor
        $artworks = collect([
            makeArtworkRow(1, '2017-03-01'),
            makeArtworkRow(2, '2021-03-01'), // exactly 1461 days (4 years)
        ]);

        $rows = $svc->calculateComebacks($artworks, 99, now(), makeMilestoneRowFn());

        expect($rows)->toHaveCount(1);
        expect($rows[0]['type'])->toBe(CreatorMilestoneType::ComebackLegendary->value);
    });
});

// ---------------------------------------------------------------------------
// CreatorStreakService
// ---------------------------------------------------------------------------

describe('CreatorStreakService', function () {
    it('returns zero streaks for empty collection', function () {
        $svc = app(CreatorStreakService::class);
        $stats = $svc->computeStreakStats(collect());

        expect($stats['current_monthly_streak'])->toBe(0)
            ->and($stats['best_monthly_streak'])->toBe(0)
            ->and($stats['current_year_streak'])->toBe(0)
            ->and($stats['best_year_streak'])->toBe(0);
    });

    it('computes a 3-month consecutive upload streak', function () {
        $svc = app(CreatorStreakService::class);
        $artworks = collect([
            makeArtworkRow(1, '2023-01-15'),
            makeArtworkRow(2, '2023-02-10'),
            makeArtworkRow(3, '2023-03-20'),
        ]);

        $stats = $svc->computeStreakStats($artworks);

        expect($stats['best_monthly_streak'])->toBeGreaterThanOrEqual(3);
    });

    it('does not inflate streak across non-consecutive months', function () {
        $svc = app(CreatorStreakService::class);
        // Jan, Mar (skipped Feb) → streak of 1 each
        $artworks = collect([
            makeArtworkRow(1, '2023-01-15'),
            makeArtworkRow(2, '2023-03-10'),
        ]);

        $stats = $svc->computeStreakStats($artworks);

        expect($stats['best_monthly_streak'])->toBe(1);
    });

    it('returns upload_streak_3 milestone when best streak is 3+ months', function () {
        $svc = app(CreatorStreakService::class);
        $artworks = collect([
            makeArtworkRow(1, '2023-01-15'),
            makeArtworkRow(2, '2023-02-10'),
            makeArtworkRow(3, '2023-03-20'),
        ]);

        $milestones = $svc->calculateStreakMilestones($artworks, 99, now(), makeMilestoneRowFn());

        $types = array_column($milestones, 'type');
        expect($types)->toContain(CreatorMilestoneType::UploadStreak3->value);
    });

    it('only inserts the best streak milestone, not lesser tiers', function () {
        $svc = app(CreatorStreakService::class);
        // Build 12 consecutive months
        $artworks = collect(range(1, 12))->map(
            fn (int $i): object => makeArtworkRow($i, Carbon::create(2022, $i, 10)->toDateTimeString())
        );

        $milestones = $svc->calculateStreakMilestones($artworks, 99, now(), makeMilestoneRowFn());

        $types = array_column($milestones, 'type');
        expect($types)->toContain(CreatorMilestoneType::UploadStreak12->value)
            ->and($types)->not->toContain(CreatorMilestoneType::UploadStreak3->value)
            ->and($types)->not->toContain(CreatorMilestoneType::UploadStreak6->value);
    });

    it('computes a 3-year active streak', function () {
        $svc = app(CreatorStreakService::class);
        $artworks = collect([
            makeArtworkRow(1, '2020-06-01'),
            makeArtworkRow(2, '2021-03-15'),
            makeArtworkRow(3, '2022-11-20'),
        ]);

        $stats = $svc->computeStreakStats($artworks);

        expect($stats['best_year_streak'])->toBeGreaterThanOrEqual(3);
    });

    it('returns active_year_streak_3 milestone when best year streak is 3+', function () {
        $svc = app(CreatorStreakService::class);
        $artworks = collect([
            makeArtworkRow(1, '2020-06-01'),
            makeArtworkRow(2, '2021-03-15'),
            makeArtworkRow(3, '2022-11-20'),
        ]);

        $milestones = $svc->calculateStreakMilestones($artworks, 99, now(), makeMilestoneRowFn());

        $types = array_column($milestones, 'type');
        expect($types)->toContain(CreatorMilestoneType::ActiveYearStreak3->value);
    });
});

// ---------------------------------------------------------------------------
// CreatorEraService
// ---------------------------------------------------------------------------

describe('CreatorEraService', function () {
    it('creates an early_years era for a creator with uploads', function () {
        Cache::flush();
        Queue::fake();

        $creator = User::factory()->create(['is_active' => true, 'created_at' => Carbon::parse('2020-01-01')]);
        $artwork  = Artwork::factory()->for($creator)->create(['published_at' => Carbon::parse('2020-06-01')]);
        DB::table('artwork_stats')->insert([
            'artwork_id' => $artwork->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
            'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
            'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null,
        ]);

        $svc      = app(CreatorEraService::class);
        $artworks = collect([makeArtworkRow($artwork->id, '2020-06-01')]);
        $svc->rebuildForUser($creator, $artworks);

        $eras = CreatorEra::where('user_id', $creator->id)->get();
        expect($eras->pluck('era_type')->all())->toContain('early_years');
    });

    it('creates a breakthrough era when a featured artwork exists', function () {
        Cache::flush();
        Queue::fake();

        $creator = User::factory()->create(['is_active' => true, 'created_at' => Carbon::parse('2019-01-01')]);
        $a1 = Artwork::factory()->for($creator)->create(['published_at' => Carbon::parse('2019-03-01')]);
        $a2 = Artwork::factory()->for($creator)->create(['published_at' => Carbon::parse('2021-07-01')]);

        DB::table('artwork_stats')->insert([
            ['artwork_id' => $a1->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
             'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
             'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null],
            ['artwork_id' => $a2->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
             'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
             'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null],
        ]);

        DB::table('artwork_features')->insert([
            'artwork_id'  => $a1->id,
            'featured_at' => Carbon::parse('2021-01-15'),
            'priority'    => 100,
            'label'       => 'Feature',
            'is_active'   => true,
            'created_by'  => $creator->id,
            'created_at'  => now(),
            'updated_at'  => now(),
        ]);

        $svc      = app(CreatorEraService::class);
        $artworks = collect([
            makeArtworkRow($a1->id, '2019-03-01'),
            makeArtworkRow($a2->id, '2021-07-01'),
        ]);
        $svc->rebuildForUser($creator, $artworks);

        $eraTypes = CreatorEra::where('user_id', $creator->id)->pluck('era_type')->all();
        expect($eraTypes)->toContain('breakthrough');
    });

    it('creates a comeback era after a 180+ day gap', function () {
        Cache::flush();
        Queue::fake();

        $creator = User::factory()->create(['is_active' => true, 'created_at' => Carbon::parse('2018-01-01')]);
        $a1 = Artwork::factory()->for($creator)->create(['published_at' => Carbon::parse('2018-06-01')]);
        $a2 = Artwork::factory()->for($creator)->create(['published_at' => Carbon::parse('2019-06-01')]); // 365 days

        DB::table('artwork_stats')->insert([
            ['artwork_id' => $a1->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
             'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
             'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null],
            ['artwork_id' => $a2->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
             'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
             'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null],
        ]);

        $svc = app(CreatorEraService::class);
        $artworks = collect([
            makeArtworkRow($a1->id, '2018-06-01'),
            makeArtworkRow($a2->id, '2019-06-01'),
        ]);
        $svc->rebuildForUser($creator, $artworks);

        $eraTypes = CreatorEra::where('user_id', $creator->id)->pluck('era_type')->all();
        expect($eraTypes)->toContain('comeback');
    });

    it('marks exactly one era as is_current', function () {
        Cache::flush();
        Queue::fake();

        $creator  = User::factory()->create(['is_active' => true, 'created_at' => Carbon::now()->subYears(2)]);
        $artwork  = Artwork::factory()->for($creator)->create(['published_at' => Carbon::now()->subMonths(6)]);
        DB::table('artwork_stats')->insert([
            'artwork_id' => $artwork->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
            'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
            'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null,
        ]);

        $svc = app(CreatorEraService::class);
        $svc->rebuildForUser($creator, collect([makeArtworkRow($artwork->id, Carbon::now()->subMonths(6)->toDateTimeString())]));

        $currentCount = CreatorEra::where('user_id', $creator->id)->where('is_current', true)->count();
        expect($currentCount)->toBe(1);
    });

    it('publicErasForUser returns formatted eras in ascending order', function () {
        Cache::flush();
        Queue::fake();

        $creator  = User::factory()->create(['is_active' => true, 'created_at' => Carbon::now()->subYears(2)]);
        $artwork  = Artwork::factory()->for($creator)->create(['published_at' => Carbon::now()->subMonths(6)]);
        DB::table('artwork_stats')->insert([
            'artwork_id' => $artwork->id, 'views' => 0, 'downloads' => 0, 'favorites' => 0,
            'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
            'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null,
        ]);

        $svc = app(CreatorEraService::class);
        $svc->rebuildForUser($creator, collect([makeArtworkRow($artwork->id, Carbon::now()->subMonths(6)->toDateTimeString())]));

        $eras = $svc->publicErasForUser($creator->id);

        expect($eras)->not->toBeEmpty();
        expect($eras[0])->toHaveKeys(['type', 'title', 'starts_at', 'is_current']);
    });
});

// ---------------------------------------------------------------------------
// CreatorJourneyService — v2 payload shape
// ---------------------------------------------------------------------------

describe('CreatorJourneyService v2 payload', function () {
    beforeEach(function () {
        Cache::flush();
        Queue::fake();
    });

    /**
     * Seed a creator with a simple 3-artwork history (no long gaps, no features).
     */
    function seedSimpleCreator(): User
    {
        $creator = User::factory()->create([
            'is_active'  => true,
            'created_at' => Carbon::parse('2021-01-01'),
        ]);

        $artworks = [
            ['published_at' => Carbon::parse('2021-02-01'), 'title' => 'Alpha'],
            ['published_at' => Carbon::parse('2021-03-01'), 'title' => 'Beta'],
            ['published_at' => Carbon::parse('2021-04-01'), 'title' => 'Gamma'],
        ];

        foreach ($artworks as $data) {
            $art = Artwork::factory()->for($creator)->create($data);
            DB::table('artwork_stats')->insert([
                'artwork_id' => $art->id, 'views' => 10, 'downloads' => 5, 'favorites' => 2,
                'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
                'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null,
            ]);
        }

        return $creator;
    }

    it('includes eras key in the public payload after rebuild', function () {
        $creator = seedSimpleCreator();
        $svc     = app(CreatorJourneyService::class);
        $svc->rebuildForUser($creator);

        $payload = $svc->publicPayloadForUser($creator);

        expect($payload)->toHaveKey('eras');
        expect($payload['eras'])->toBeArray();
    });

    it('includes streaks key with expected sub-keys in the public payload', function () {
        $creator = seedSimpleCreator();
        $svc     = app(CreatorJourneyService::class);
        $svc->rebuildForUser($creator);

        $payload = $svc->publicPayloadForUser($creator);

        expect($payload)->toHaveKey('streaks');
        expect($payload['streaks'])->toHaveKeys([
            'current_monthly_upload_streak',
            'best_monthly_upload_streak',
            'current_active_year_streak',
            'best_active_year_streak',
        ]);
    });

    it('includes evolution key in the public payload', function () {
        $creator = seedSimpleCreator();
        $svc     = app(CreatorJourneyService::class);
        $svc->rebuildForUser($creator);

        $payload = $svc->publicPayloadForUser($creator);

        expect($payload)->toHaveKey('evolution');
        expect($payload['evolution'])->toBeArray();
    });

    it('includes shareable_recaps key in the public payload', function () {
        $creator = seedSimpleCreator();
        $svc     = app(CreatorJourneyService::class);
        $svc->rebuildForUser($creator);

        $payload = $svc->publicPayloadForUser($creator);

        expect($payload)->toHaveKey('shareable_recaps');
        expect($payload['shareable_recaps'])->toBeArray();
    });

    it('rebuilds eras in the creator_eras table when rebuildForUser is called', function () {
        $creator = seedSimpleCreator();
        $svc     = app(CreatorJourneyService::class);
        $svc->rebuildForUser($creator);

        $eraCount = CreatorEra::where('user_id', $creator->id)->count();
        expect($eraCount)->toBeGreaterThan(0);
    });

    it('includes comeback milestones in public milestones when a large gap is present', function () {
        Cache::flush();
        Queue::fake();

        $creator = User::factory()->create([
            'is_active'  => true,
            'created_at' => Carbon::parse('2018-01-01'),
        ]);

        $dates = [
            ['published_at' => Carbon::parse('2018-06-01'), 'title' => 'Early Work'],
            ['published_at' => Carbon::parse('2019-12-01'), 'title' => 'Return Work'],  // ~548 days
        ];

        foreach ($dates as $data) {
            $art = Artwork::factory()->for($creator)->create($data);
            DB::table('artwork_stats')->insert([
                'artwork_id' => $art->id, 'views' => 10, 'downloads' => 5, 'favorites' => 2,
                'rating_avg' => 0, 'rating_count' => 0, 'comments_count' => 0,
                'shares_count' => 0, 'downloads_1h' => 0, 'heat_score_updated_at' => null,
            ]);
        }

        app(CreatorJourneyService::class)->rebuildForUser($creator);

        $types = DB::table('creator_milestones')
            ->where('user_id', $creator->id)
            ->pluck('type')
            ->all();

        expect($types)->toContain(CreatorMilestoneType::ComebackMajor->value);
    });

    it('v2 payload is returned via the public API endpoint', function () {
        $creator = seedSimpleCreator();
        app(CreatorJourneyService::class)->rebuildForUser($creator);

        $response = $this->getJson(route('api.profile.journey', ['username' => $creator->username]));

        $response->assertOk();
        $data = $response->json('data');

        expect($data)->toHaveKey('eras')
            ->and($data)->toHaveKey('streaks')
            ->and($data)->toHaveKey('evolution');
    });
});