import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
import { PrismaClient } from '@prisma/client';
import { makeFakePorts } from '@insignia/iios-testkit';
import { resetDb } from '../test-utils/reset-db';
import { OutboundService } from '../adapters/outbound.service';
import { CapabilityBroker } from '../capability/capability.broker';
import { CapabilityProviderRegistry } from '../capability/capability.registry';
import { IdempotencyService } from '../idempotency/idempotency.service';
import { TemplateRepository } from './template.repository';
import { TemplateService } from './template.service';
import { TemplatedSender } from './templated-sender';
import type { PrismaService } from '../prisma/prisma.service';

const url = process.env.DATABASE_URL ?? 'postgresql://iios:iios@localhost:5434/iios?schema=public';
const prisma = new PrismaClient({ datasources: { db: { url } } });
const asService = prisma as unknown as PrismaService;

function sender(): TemplatedSender {
  const outbound = new OutboundService(asService, new CapabilityBroker(makeFakePorts(), new CapabilityProviderRegistry()), new IdempotencyService(asService));
  const templates = new TemplateService(new TemplateRepository(asService));
  return new TemplatedSender(templates, outbound, makeFakePorts());
}

async function seedReceipt() {
  await prisma.iiosMessageTemplate.create({
    data: { key: 'payment.receipt', channel: 'EMAIL', locale: 'en', version: 1, subject: 'Thanks {{firstName}}', bodyHtml: '<p>{{amount}}</p>', bodyText: '{{amount}}', variables: ['firstName', 'amount'] },
  });
}

beforeAll(async () => { await prisma.$connect(); });
afterAll(async () => { await prisma.$disconnect(); });
beforeEach(async () => { await resetDb(prisma); });

describe('TemplatedSender.sendTemplated', () => {
  it('renders a stored template, queues an outbound command, and stamps provenance', async () => {
    await seedReceipt();
    const cmd = await sender().sendTemplated({
      source: { key: 'payment.receipt' }, channel: 'EMAIL', target: 'dana@acme.com',
      vars: { firstName: 'Dana', amount: '$2,000' }, idempotencyKey: 'receipt:cs_1',
    });
    expect(cmd.channelType).toBe('EMAIL');
    expect(cmd.target).toBe('dana@acme.com');
    expect((cmd.payload as { subject: string }).subject).toBe('Thanks Dana');
    expect(cmd.templateKey).toBe('payment.receipt');
    expect(cmd.templateVersion).toBe(1);
    expect(cmd.templateLocale).toBe('en');
    expect(cmd.renderedHash).toMatch(/^[a-f0-9]{64}$/);
  });

  it('is idempotent per key: a replay yields ONE command', async () => {
    await seedReceipt();
    const s = sender();
    const input = { source: { key: 'payment.receipt' }, channel: 'EMAIL' as const, target: 'dana@acme.com', vars: { firstName: 'Dana', amount: '$1' }, idempotencyKey: 'receipt:cs_dup' };
    const a = await s.sendTemplated(input);
    const b = await s.sendTemplated(input);
    expect(b.id).toBe(a.id);
    expect(await prisma.iiosOutboundCommand.count({ where: { idempotencyKey: 'receipt:cs_dup' } })).toBe(1);
  });

  it('sends inline content with null template key but a hash', async () => {
    const cmd = await sender().sendTemplated({
      source: { inline: { subject: 'Hi {{n}}', html: '<b>{{n}}</b>', variables: ['n'] } },
      channel: 'EMAIL', target: 'x@y.com', vars: { n: 'Z' }, idempotencyKey: 'inline:1',
    });
    expect((cmd.payload as { subject: string }).subject).toBe('Hi Z');
    expect(cmd.templateKey).toBeNull();
    expect(cmd.renderedHash).toMatch(/^[a-f0-9]{64}$/);
  });

  it('carries attachment refs into the EMAIL command payload', async () => {
    await seedReceipt();
    const cmd = await sender().sendTemplated({
      source: { key: 'payment.receipt' }, channel: 'EMAIL', target: 'dana@acme.com',
      vars: { firstName: 'Dana', amount: '$1' }, idempotencyKey: 'att:1',
      attachments: [{ filename: 'invoice.pdf', contentRef: 'obj/1', mimeType: 'application/pdf' }],
    });
    expect((cmd.payload as { attachments: unknown[] }).attachments).toEqual([{ filename: 'invoice.pdf', contentRef: 'obj/1', mimeType: 'application/pdf' }]);
  });

  it('shapes an SMS send as text only', async () => {
    await prisma.iiosMessageTemplate.create({
      data: { key: 'payment.receipt', channel: 'SMS', locale: 'en', version: 1, bodyText: 'Paid {{amount}}', variables: ['amount'] },
    });
    const cmd = await sender().sendTemplated({
      source: { key: 'payment.receipt' }, channel: 'SMS', target: '+1415', vars: { amount: '$2,000' }, idempotencyKey: 'sms:1',
    });
    expect(cmd.channelType).toBe('SMS');
    expect(cmd.payload).toEqual({ text: 'Paid $2,000' });
  });
});