<?php

use App\Enums\BoostPlacement;
use App\Enums\Portal;
use App\Enums\PressReleaseClassification;
use App\Enums\PressReleaseStatus;
use App\Exceptions\BoostNotAllowedException;
use App\Exceptions\InsufficientCreditsException;
use App\Models\Boost;
use App\Models\Category;
use App\Models\PressRelease;
use App\Models\User;
use App\Services\Billing\CreditWalletService;
use App\Services\PressRelease\BoostService;

beforeEach(function (): void {
    $this->service = app(BoostService::class);
    $this->wallet = app(CreditWalletService::class);
});

function boostableRelease(User $user, array $attributes = []): PressRelease
{
    return PressRelease::factory()->published()->create([
        'user_id' => $user->id,
        'classification' => PressReleaseClassification::Green->value,
        ...$attributes,
    ]);
}

/**
 * Belegt `$count` Slots der Stufe mit fremden, aktiv geboosteten PMs
 * derselben Ausgabe (Portal × Sprache, optional Rubrik).
 *
 * @return array<int, Boost>
 */
function occupySlots(int $count, BoostPlacement $placement, Portal $portal, ?Category $category = null): array
{
    return collect(range(1, $count))->map(function (int $i) use ($placement, $portal, $category): Boost {
        $pr = PressRelease::factory()->published()->forPortal($portal)->create([
            'classification' => PressReleaseClassification::Green->value,
            'category_id' => ($category ?? Category::factory()->create())->id,
        ]);

        return Boost::factory()->for($pr)->create([
            'placement' => $placement,
            'ends_at' => now()->addDays($i),
        ]);
    })->all();
}

test('only published green releases are boostable', function () {
    $user = User::factory()->create();

    expect($this->service->canBoost(boostableRelease($user)))->toBeTrue();

    $yellow = PressRelease::factory()->published()->create([
        'classification' => PressReleaseClassification::Yellow->value,
    ]);
    expect($this->service->canBoost($yellow))->toBeFalse();

    $draftGreen = PressRelease::factory()->create([
        'status' => PressReleaseStatus::Draft->value,
        'classification' => PressReleaseClassification::Green->value,
    ]);
    expect($this->service->canBoost($draftGreen))->toBeFalse();
});

test('booking a boost debits the wallet and activates the placement', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 20);
    $pr = boostableRelease($user);

    $boost = $this->service->boost($user, $pr, 14);

    expect($boost->days)->toBe(14);
    expect($boost->credits_charged)->toBe(20);
    expect($this->wallet->balance($user))->toBe(0);
    expect($this->service->isBoosted($pr))->toBeTrue();
    expect($pr->fresh()->isBoosted())->toBeTrue();
});

test('boosting a non-green release is rejected at the gate', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);
    $red = PressRelease::factory()->published()->create([
        'classification' => PressReleaseClassification::Red->value,
    ]);

    expect(fn () => $this->service->boost($user, $red, 7))
        ->toThrow(BoostNotAllowedException::class);
    expect($this->wallet->balance($user))->toBe(50);
});

test('an unaffordable boost throws and creates no boost record', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 5);
    $pr = boostableRelease($user);

    expect(fn () => $this->service->boost($user, $pr, 7))
        ->toThrow(InsufficientCreditsException::class);
    expect($pr->boosts()->count())->toBe(0);
    expect($this->wallet->balance($user))->toBe(5);
});

test('an unknown duration is rejected', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);
    $pr = boostableRelease($user);

    expect(fn () => $this->service->boost($user, $pr, 99))
        ->toThrow(InvalidArgumentException::class);
});

test('a second boost extends from the running end instead of overlapping', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 100);
    $pr = boostableRelease($user);

    $first = $this->service->boost($user, $pr, 7);
    $second = $this->service->boost($user, $pr, 14);

    expect($second->starts_at->timestamp)->toBe($first->ends_at->timestamp);
    expect($second->ends_at->timestamp)->toBe($first->ends_at->copy()->addDays(14)->timestamp);
});

test('a category boost costs half the staffel and only activates the category placement', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 10);
    $pr = boostableRelease($user);

    $boost = $this->service->boost($user, $pr, 7, BoostPlacement::Category);

    expect($boost->placement)->toBe(BoostPlacement::Category);
    expect($boost->credits_charged)->toBe(6);
    expect($this->wallet->balance($user))->toBe(4);
    expect($this->service->isBoosted($pr, BoostPlacement::Category))->toBeTrue();
    expect($this->service->isBoosted($pr, BoostPlacement::Home))->toBeFalse();
});

test('the placements extend independently of each other', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 100);
    $pr = boostableRelease($user);

    $home = $this->service->boost($user, $pr, 30, BoostPlacement::Home);
    $category = $this->service->boost($user, $pr, 7, BoostPlacement::Category);

    // Der Kategorie-Boost startet sofort — er verlängert NICHT den laufenden
    // Startseiten-Boost (getrennte Stufen).
    expect($category->starts_at->timestamp)->toBeLessThan($home->ends_at->timestamp);
    expect($this->service->activeUntil($pr, BoostPlacement::Category)->timestamp)
        ->toBe($category->ends_at->timestamp);
});

test('a full homepage slot inventory rejects new home boosts with the next free date', function () {
    $this->freezeTime();

    $user = User::factory()->create();
    $this->wallet->credit($user, 50);
    $pr = boostableRelease($user, ['portal' => Portal::Presseecho->value]);

    // 5 von 5 Startseiten-Slots der Ausgabe belegt; der früheste wird in
    // einem Tag frei.
    occupySlots(5, BoostPlacement::Home, Portal::Presseecho);

    expect(fn () => $this->service->boost($user, $pr, 7))
        ->toThrow(BoostNotAllowedException::class, 'ausgebucht');
    expect($this->wallet->balance($user))->toBe(50);

    $availability = $this->service->slotAvailability($pr, BoostPlacement::Home);
    expect($availability['available'])->toBeFalse();
    expect($availability['freeAt']->timestamp)->toBe(now()->addDay()->timestamp);
});

test('an extension is allowed even when all slots are taken — the release keeps its slot', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);
    $pr = boostableRelease($user, ['portal' => Portal::Presseecho->value]);

    $first = $this->service->boost($user, $pr, 7);
    occupySlots(5, BoostPlacement::Home, Portal::Presseecho);

    $second = $this->service->boost($user, $pr, 7);

    expect($second->starts_at->timestamp)->toBe($first->ends_at->timestamp);
});

test('slots on another portal or in another language do not block the booking', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);
    $pr = boostableRelease($user, ['portal' => Portal::Presseecho->value, 'language' => 'de']);

    // Volle Startseite beim anderen Spoke — für diese PM irrelevant.
    occupySlots(5, BoostPlacement::Home, Portal::Businessportal24);

    expect($this->service->boost($user, $pr, 7))->toBeInstanceOf(Boost::class);
});

test('a full category page rejects new category boosts while other categories stay open', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);

    $category = Category::factory()->create();
    $pr = boostableRelease($user, [
        'portal' => Portal::Presseecho->value,
        'category_id' => $category->id,
    ]);

    // 3 von 3 Kategorie-Slots dieser Rubrik belegt.
    occupySlots(3, BoostPlacement::Category, Portal::Presseecho, $category);

    expect(fn () => $this->service->boost($user, $pr, 7, BoostPlacement::Category))
        ->toThrow(BoostNotAllowedException::class, 'ausgebucht');

    // Eine PM in einer anderen Rubrik ist nicht betroffen.
    $other = boostableRelease($user, ['portal' => Portal::Presseecho->value]);
    expect($this->service->boost($user, $other, 7, BoostPlacement::Category))->toBeInstanceOf(Boost::class);
});

test('home boosts do not consume category slots and vice versa', function () {
    $user = User::factory()->create();
    $this->wallet->credit($user, 50);

    $category = Category::factory()->create();
    $pr = boostableRelease($user, [
        'portal' => Portal::Presseecho->value,
        'category_id' => $category->id,
    ]);

    // Startseite komplett voll (auch mit PMs derselben Rubrik) — die
    // Kategorie-Slots bleiben davon unberührt.
    occupySlots(5, BoostPlacement::Home, Portal::Presseecho, $category);

    expect($this->service->boost($user, $pr, 7, BoostPlacement::Category))->toBeInstanceOf(Boost::class);
});