<?php

declare(strict_types=1);

use App\Models\User;
use App\Modules\Groups\Models\Group;
use App\Modules\Groups\Notifications\GroupMembershipApprovedNotification;
use App\Modules\Notifications\NotificationPreference;
use App\Modules\Notifications\Notifier;
use App\Modules\Platform\Settings\Setting;
use App\Modules\Platform\Settings\Settings;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Notification;
use Inertia\Testing\AssertableInertia;

beforeEach(function () {
    // EnsureSetupIsComplete redirects every request to /setup until a
    // staff account exists — needs one present even though it's unused.
    User::factory()->create();
    app(Settings::class)->set(Setting::EmailNotificationsEnabled, true);
    $this->group = Group::query()->create(['name' => 'Wanted']);
});

test('an absent preference row falls back to the type default (email on for group.membership_approved)', function () {
    Notification::fake();
    $client = User::factory()->client()->create();

    expect(NotificationPreference::query()->where('user_id', $client->id)->exists())->toBeFalse();

    app(Notifier::class)->send('group.membership_approved', [$client], subject: $this->group, data: ['groupName' => $this->group->name]);

    Notification::assertSentTo($client, GroupMembershipApprovedNotification::class);
});

test('an explicit opt-out preference suppresses the mail companion', function () {
    Notification::fake();
    $client = User::factory()->client()->create();

    NotificationPreference::query()->create([
        'user_id' => $client->id,
        'type' => 'group.membership_approved',
        'email_enabled' => false,
    ]);

    app(Notifier::class)->send('group.membership_approved', [$client], subject: $this->group, data: ['groupName' => $this->group->name]);

    Notification::assertNothingSent();
});

test('updating preferences via the settings page persists a row per type', function () {
    $client = User::factory()->client()->create();

    $this->actingAs($client)->put('/settings/notifications', [
        'preferences' => [
            ['type' => 'group.membership_approved', 'email_enabled' => false],
        ],
    ])->assertRedirect();

    $row = NotificationPreference::query()->where('user_id', $client->id)->where('type', 'group.membership_approved')->sole();
    expect($row->email_enabled)->toBeFalse();
});

test('a preference for a type nothing has registered is refused', function () {
    $client = User::factory()->client()->create();

    $this->actingAs($client)->put('/settings/notifications', [
        'preferences' => [
            ['type' => 'not.a.real.type', 'email_enabled' => false],
        ],
    ])->assertInvalid(['preferences.0.type']);

    expect(NotificationPreference::query()->where('user_id', $client->id)->exists())->toBeFalse();
});

test('a preference for a registered type that cannot email is refused', function () {
    $client = User::factory()->client()->create();

    // A real key, but one the screen never offers a toggle for — a row for
    // it could never change what anybody receives.
    $this->actingAs($client)->put('/settings/notifications', [
        'preferences' => [
            ['type' => 'client_uploaded', 'email_enabled' => true],
        ],
    ])->assertInvalid(['preferences.0.type']);

    expect(NotificationPreference::query()->where('user_id', $client->id)->exists())->toBeFalse();
});

test('one bad key rejects the whole submission, leaving no half-applied state', function () {
    $client = User::factory()->client()->create();

    $this->actingAs($client)->put('/settings/notifications', [
        'preferences' => [
            ['type' => 'group.membership_approved', 'email_enabled' => false],
            ['type' => 'not.a.real.type', 'email_enabled' => false],
        ],
    ])->assertInvalid(['preferences.1.type']);

    // Validation runs before the loop, so the good row is not written either.
    expect(NotificationPreference::query()->where('user_id', $client->id)->exists())->toBeFalse();
});

test('the master switch off suppresses email regardless of an explicit per-user opt-in', function () {
    Notification::fake();
    app(Settings::class)->set(Setting::EmailNotificationsEnabled, false);
    $client = User::factory()->client()->create();

    NotificationPreference::query()->create([
        'user_id' => $client->id,
        'type' => 'group.membership_approved',
        'email_enabled' => true,
    ]);

    app(Notifier::class)->send('group.membership_approved', [$client], subject: $this->group, data: ['groupName' => $this->group->name]);

    Notification::assertNothingSent();
});

test('the preferences edit page lists every type that can email, however it emails', function () {
    $client = User::factory()->client()->create();

    $this->actingAs($client)->get('/settings/notifications')->assertInertia(
        function (AssertableInertia $page) {
            $page->component('settings/notifications');

            $keys = collect($page->toArray()['props']['types'])->pluck('key');

            // Both routes count: a type Notifier mails directly, and one
            // the digest buffers and mails. The digest ones had no toggle
            // at all before — a file-share email could not be switched off
            // by the person receiving it.
            expect($keys)->toContain('group.membership_approved', 'file_shared', 'file_comment.posted')
                // Still nothing for a type that cannot email either way.
                ->not->toContain('client_uploaded');
        },
    );
});

test('saving rejects more preferences than there are types', function () {
    // The registry check asks what each type is, not how many were sent,
    // and the loop wrote a row per element. Sent as JSON: a form-encoded
    // array this large is truncated by max_input_vars before it reaches
    // the rule under test.
    $client = User::factory()->client()->create();

    $preferences = [];

    for ($i = 0; $i < 2000; $i++) {
        $preferences[] = ['type' => 'group.membership_approved', 'email_enabled' => true];
    }

    DB::enableQueryLog();

    $this->actingAs($client)
        ->putJson('/settings/notifications', ['preferences' => $preferences])
        ->assertJsonValidationErrors(['preferences']);

    $queries = count(DB::getQueryLog());
    DB::disableQueryLog();

    expect($queries)->toBeLessThan(20)
        ->and(NotificationPreference::query()->count())->toBe(0);
});

test('saving rejects the same type twice', function () {
    $client = User::factory()->client()->create();

    $this->actingAs($client)->putJson('/settings/notifications', [
        'preferences' => [
            ['type' => 'group.membership_approved', 'email_enabled' => true],
            ['type' => 'group.membership_approved', 'email_enabled' => false],
        ],
    ])->assertJsonValidationErrors(['preferences.0.type']);

    expect(NotificationPreference::query()->count())->toBe(0);
});

test('the whole set of emailable types still saves at once', function () {
    // The bound is the registry, so what edit() offers must always fit:
    // this is the largest submission the screen itself can produce.
    $client = User::factory()->client()->create();

    $types = $this->actingAs($client)->get('/settings/notifications')
        ->viewData('page')['props']['types'];

    $preferences = array_map(
        fn (array $type): array => ['type' => $type['key'], 'email_enabled' => false],
        $types,
    );

    $this->actingAs($client)
        ->putJson('/settings/notifications', ['preferences' => $preferences])
        ->assertSessionHasNoErrors();

    expect(NotificationPreference::query()->where('user_id', $client->id)->count())
        ->toBe(count($types))
        ->and(count($types))->toBeGreaterThan(0);
});