<?php

declare(strict_types=1);

use App\Mail\Sales\AttachmentDecidedMail;
use App\Models\SalesAttachmentRequest;
use App\Models\SalesClientAssignment;
use App\Models\SalesTariff;
use App\Models\SalesUser;
use App\Models\Tenant;
use App\Services\Sales\SalesAttachmentService;
use Illuminate\Auth\Access\AuthorizationException;
use Illuminate\Foundation\Testing\DatabaseTransactions;
use Illuminate\Support\Facades\Mail;

/**
 * TDD: SalesAttachmentService::decide() — решение начальника по заявке.
 *
 * Покрывает Task 2.2:
 *   - approve  → создаёт assignment со snapshot тарифа менеджера
 *   - snapshot immutability (В12)
 *   - reject   → status='rejected', comment, письмо, без assignment
 *   - reassign → старый assignment удалён, создан новый
 *   - manager decide → AuthorizationException
 *   - менеджер без тарифа → assignment без тарифа
 *
 * DB_DATABASE=liderra_testing; DatabaseTransactions — откат в конце теста.
 */
uses(DatabaseTransactions::class);

// ── helpers ──────────────────────────────────────────────────────────────────

function makeDecideManager(array $attrs = []): SalesUser
{
    return SalesUser::create(array_merge([
        'name' => 'Менеджер '.uniqid(),
        'email' => 'mgr2'.uniqid().'@sales.local',
        'password' => bcrypt('secret'),
        'role' => 'manager',
        'is_active' => true,
    ], $attrs));
}

function makeDecideHead(array $attrs = []): SalesUser
{
    return SalesUser::create(array_merge([
        'name' => 'Руководитель '.uniqid(),
        'email' => 'head2'.uniqid().'@sales.local',
        'password' => bcrypt('secret'),
        'role' => 'head',
        'is_active' => true,
    ], $attrs));
}

function makeTariff(array $attrs = []): SalesTariff
{
    return SalesTariff::create(array_merge([
        'name' => 'Тариф '.uniqid(),
        'kind' => 'topup_step',
        'params' => ['step_rub' => 1000, 'reward_pct' => 5],
        'is_active' => true,
    ], $attrs));
}

function makePendingRequest(SalesUser $manager, Tenant $tenant): SalesAttachmentRequest
{
    return SalesAttachmentRequest::create([
        'sales_user_id' => $manager->id,
        'login_input' => $tenant->contact_email ?? 'client@test.local',
        'tenant_id' => $tenant->id,
        'status' => 'pending',
    ]);
}

function makeDecideTenant(): Tenant
{
    return Tenant::factory()->create([
        'contact_email' => 'client2'.uniqid().'@example.com',
    ]);
}

function getService(): SalesAttachmentService
{
    return app(SalesAttachmentService::class);
}

// ── approve: свободный клиент ─────────────────────────────────────────────────

test('head approves pending request for free client — assignment created with tariff snapshot', function (): void {
    Mail::fake();

    $tariff = makeTariff();
    $manager = makeDecideManager(['current_tariff_id' => $tariff->id]);
    $head = makeDecideHead();
    $tenant = makeDecideTenant();
    $request = makePendingRequest($manager, $tenant);

    $result = getService()->decide($head, $request->id, 'approve');

    // Статус заявки изменён
    expect($result->status)->toBe('approved')
        ->and($result->decided_by)->toBe($head->id)
        ->and($result->decided_at)->not->toBeNull();

    // Assignment создан
    $assignment = SalesClientAssignment::where('tenant_id', $tenant->id)->first();
    expect($assignment)->not->toBeNull()
        ->and($assignment->sales_user_id)->toBe($manager->id)
        ->and($assignment->tariff_id)->toBe($tariff->id)
        ->and($assignment->tariff_kind)->toBe($tariff->kind)
        ->and($assignment->tariff_params)->toBe($tariff->params);

    // Письмо поставлено в очередь
    Mail::assertQueued(AttachmentDecidedMail::class, fn ($mail): bool => $mail->hasTo($manager->email));
});

// ── snapshot immutability (В12) ────────────────────────────────────────────────

test('snapshot immutability: changing manager tariff after approve does not affect existing assignment', function (): void {
    Mail::fake();

    $tariffA = makeTariff(['kind' => 'topup_step', 'params' => ['step_rub' => 500]]);
    // tariffB — валидный новый вид (используется только как НОВЫЙ текущий тариф менеджера;
    // снимок привязки должен остаться от tariffA).
    $tariffB = makeTariff(['kind' => 'daily_salary', 'params' => []]);
    $manager = makeDecideManager(['current_tariff_id' => $tariffA->id]);
    $head = makeDecideHead();
    $tenant = makeDecideTenant();
    $request = makePendingRequest($manager, $tenant);

    getService()->decide($head, $request->id, 'approve');

    // Меняем тариф менеджера после одобрения
    $manager->update(['current_tariff_id' => $tariffB->id]);

    // Snapshot assignment-а НЕ должен был измениться
    $assignment = SalesClientAssignment::where('tenant_id', $tenant->id)->first();
    expect($assignment)->not->toBeNull()
        ->and($assignment->tariff_id)->toBe($tariffA->id)
        ->and($assignment->tariff_kind)->toBe('topup_step')
        ->and($assignment->tariff_params)->toBe(['step_rub' => 500]);
});

// ── reject ─────────────────────────────────────────────────────────────────────

test('head rejects pending request — status rejected, comment stored, no assignment, mail queued', function (): void {
    Mail::fake();

    $manager = makeDecideManager();
    $head = makeDecideHead();
    $tenant = makeDecideTenant();
    $request = makePendingRequest($manager, $tenant);

    $result = getService()->decide($head, $request->id, 'reject', 'Клиент уже обслуживается нами напрямую');

    expect($result->status)->toBe('rejected')
        ->and($result->decided_by)->toBe($head->id)
        ->and($result->decided_at)->not->toBeNull()
        ->and($result->comment)->toBe('Клиент уже обслуживается нами напрямую');

    // Assignment НЕ создан
    $assignment = SalesClientAssignment::where('tenant_id', $tenant->id)->first();
    expect($assignment)->toBeNull();

    // Письмо об отказе поставлено в очередь
    Mail::assertQueued(AttachmentDecidedMail::class, fn ($mail): bool => $mail->hasTo($manager->email));
});

// ── reassign ──────────────────────────────────────────────────────────────────

test('reassign: head approves manager B for client already assigned to manager A — old assignment gone, new one created', function (): void {
    Mail::fake();

    $tariffA = makeTariff(['name' => 'Тариф А '.uniqid()]);
    $tariffB = makeTariff(['name' => 'Тариф Б '.uniqid(), 'kind' => 'topup_step', 'params' => ['threshold' => 0, 'reward' => 2000, 'periods' => []]]);

    $managerA = makeDecideManager(['current_tariff_id' => $tariffA->id]);
    $managerB = makeDecideManager(['current_tariff_id' => $tariffB->id]);
    $head = makeDecideHead();
    $tenant = makeDecideTenant();

    // Клиент уже привязан к менеджеру A
    SalesClientAssignment::create([
        'sales_user_id' => $managerA->id,
        'tenant_id' => $tenant->id,
        'tariff_id' => $tariffA->id,
        'tariff_kind' => $tariffA->kind,
        'tariff_params' => $tariffA->params,
        'assigned_at' => now(),
    ]);

    // Менеджер B подал заявку на того же клиента
    $requestB = makePendingRequest($managerB, $tenant);

    $result = getService()->decide($head, $requestB->id, 'approve');

    expect($result->status)->toBe('approved');

    // Старый assignment менеджера A должен быть удалён
    $oldAssignment = SalesClientAssignment::where('tenant_id', $tenant->id)
        ->where('sales_user_id', $managerA->id)
        ->first();
    expect($oldAssignment)->toBeNull();

    // Новый assignment создан для менеджера B
    $newAssignment = SalesClientAssignment::where('tenant_id', $tenant->id)->first();
    expect($newAssignment)->not->toBeNull()
        ->and($newAssignment->sales_user_id)->toBe($managerB->id)
        ->and($newAssignment->tariff_id)->toBe($tariffB->id)
        ->and($newAssignment->tariff_kind)->toBe('topup_step')
        // Снимок = params tariffB (сравниваем по значениям — JSONB не хранит порядок ключей).
        ->and((float) $newAssignment->tariff_params['reward'])->toBe(2000.0)
        ->and((float) $newAssignment->tariff_params['threshold'])->toBe(0.0)
        ->and($newAssignment->tariff_params['periods'])->toBe([]);

    // tenant_id UNIQUE — только одна запись
    $count = SalesClientAssignment::where('tenant_id', $tenant->id)->count();
    expect($count)->toBe(1);

    Mail::assertQueued(AttachmentDecidedMail::class);
});

// ── менеджер не может решать ──────────────────────────────────────────────────

test('manager calling decide throws AuthorizationException', function (): void {
    $manager = makeDecideManager();
    $head = makeDecideHead();
    $tenant = makeDecideTenant();
    $request = makePendingRequest($manager, $tenant);

    expect(fn () => getService()->decide($manager, $request->id, 'approve'))
        ->toThrow(AuthorizationException::class);
});

// ── менеджер без тарифа ───────────────────────────────────────────────────────

test('manager with current_tariff_id=null approved — assignment created with null tariff (income 0)', function (): void {
    Mail::fake();

    $manager = makeDecideManager(['current_tariff_id' => null]);
    $head = makeDecideHead();
    $tenant = makeDecideTenant();
    $request = makePendingRequest($manager, $tenant);

    $result = getService()->decide($head, $request->id, 'approve');

    expect($result->status)->toBe('approved');

    $assignment = SalesClientAssignment::where('tenant_id', $tenant->id)->first();
    expect($assignment)->not->toBeNull()
        ->and($assignment->tariff_id)->toBeNull()
        ->and($assignment->tariff_kind)->toBeNull()
        ->and($assignment->tariff_params)->toBe([]);

    Mail::assertQueued(AttachmentDecidedMail::class);
});