import { ConfigService } from '@nestjs/config';
import { Test } from '@nestjs/testing';
import { PrismaService } from '../../prisma/prisma.service';
import { AiSimulationClient } from './ai-simulation.client';
import { SimulationsService } from './simulations.service';

describe('SimulationsService', () => {
  let service: SimulationsService;
  const aiClient = {
    execute: jest.fn(),
    getResult: jest.fn(),
  };
  const configService = {
    getOrThrow: jest.fn((key: string) => {
      if (key === 'aiSimulation.refreshIntervalMs') {
        return 10_000;
      }

      throw new Error(`Unexpected config key: ${key}`);
    }),
  };
  const prisma = {
    customer: {
      findFirst: jest.fn(),
    },
    aiHairSimulation: {
      findFirst: jest.fn(),
      findMany: jest.fn(),
    },
    aiHairSimulationTask: {
      findMany: jest.fn(),
      update: jest.fn(),
    },
    hairTemplate: {
      findMany: jest.fn(),
      count: jest.fn(),
    },
    $transaction: jest.fn(),
  };

  beforeEach(async () => {
    jest.resetAllMocks();
    configService.getOrThrow.mockImplementation((key: string) => {
      if (key === 'aiSimulation.refreshIntervalMs') {
        return 10_000;
      }

      throw new Error(`Unexpected config key: ${key}`);
    });

    const moduleRef = await Test.createTestingModule({
      providers: [
        SimulationsService,
        { provide: PrismaService, useValue: prisma },
        { provide: AiSimulationClient, useValue: aiClient },
        { provide: ConfigService, useValue: configService },
      ],
    }).compile();

    service = moduleRef.get(SimulationsService);
  });

  it('returns only public stylist templates for the current stylist', async () => {
    prisma.hairTemplate.findMany.mockResolvedValue([
      {
        id: BigInt(11),
        templateName: 'Layer Bob',
        coverUrl: 'https://cdn.example.com/bob.png',
        category: 'SHORT',
        tags: 'airy,bob',
        description: 'short bob',
        templateUrl: 'https://cdn.example.com/bob.zip',
        isSystemTemplate: 'NO',
      },
    ]);
    prisma.hairTemplate.count.mockResolvedValue(1);

    const result = await service.listTemplateOptions(BigInt(7), {
      source: 'STYLIST',
      page: 1,
      pageSize: 12,
    });

    expect(prisma.hairTemplate.findMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: expect.objectContaining({
          isDeleted: 0,
          status: 'PUBLIC',
          isSystemTemplate: 'NO',
          hairstylistId: BigInt(7),
        }),
      }),
    );
    expect(result.items[0]).toMatchObject({
      id: '11',
      templateName: 'Layer Bob',
      tags: ['airy', 'bob'],
      isSystemTemplate: false,
    });
  });

  it('returns only public system templates for the system tab', async () => {
    prisma.hairTemplate.findMany.mockResolvedValue([
      {
        id: BigInt(21),
        templateName: 'Classic Medium',
        coverUrl: '',
        category: 'MEDIUM',
        tags: '',
        description: null,
        templateUrl: 'https://cdn.example.com/medium.zip',
        isSystemTemplate: 'YES',
      },
    ]);
    prisma.hairTemplate.count.mockResolvedValue(1);

    const result = await service.listTemplateOptions(BigInt(7), {
      source: 'SYSTEM',
      page: 1,
      pageSize: 12,
    });

    expect(prisma.hairTemplate.findMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: expect.objectContaining({
          isDeleted: 0,
          status: 'PUBLIC',
          isSystemTemplate: 'YES',
        }),
      }),
    );
    expect(result.items[0].id).toBe('21');
  });

  it('creates one simulation and one task row per selected template', async () => {
    prisma.customer.findFirst.mockResolvedValue({ id: BigInt(5) });
    prisma.hairTemplate.findMany.mockResolvedValue([
      {
        id: BigInt(11),
        templateUrl: 'https://cdn.example.com/11.zip',
        isSystemTemplate: 'NO',
        hairstylistId: BigInt(7),
        status: 'PUBLIC',
        isDeleted: 0,
      },
      {
        id: BigInt(12),
        templateUrl: 'https://cdn.example.com/12.zip',
        isSystemTemplate: 'YES',
        hairstylistId: null,
        status: 'PUBLIC',
        isDeleted: 0,
      },
    ]);
    aiClient.execute
      .mockResolvedValueOnce({ taskId: 'task-11' })
      .mockResolvedValueOnce({ taskId: 'task-12' });
    const createSimulationRecord = jest.fn().mockResolvedValue({ id: BigInt(91) });
    const createTaskRecords = jest.fn().mockResolvedValue({ count: 2 });
    prisma.$transaction.mockImplementation(async (callback: (tx: {
      aiHairSimulation: { create: jest.Mock };
      aiHairSimulationTask: { createMany: jest.Mock };
    }) => Promise<{ simulationId: string }>) =>
      callback({
        aiHairSimulation: {
          create: createSimulationRecord,
        },
        aiHairSimulationTask: {
          createMany: createTaskRecords,
        },
      }),
    );

    const result = await service.createSimulation(BigInt(7), {
      customerId: '5',
      originImage: 'https://cdn.example.com/origin.jpg',
      templateIds: ['11', '12'],
      simulateRemark: 'soft volume',
    });

    expect(aiClient.execute).toHaveBeenNthCalledWith(
      1,
      'https://cdn.example.com/11.zip',
      'https://cdn.example.com/origin.jpg',
    );
    expect(createSimulationRecord).toHaveBeenCalledWith({
      data: expect.objectContaining({
        templateIds: JSON.stringify(['11', '12']),
      }),
    });
    expect(result).toEqual({ simulationId: '91' });
  });

  it('rejects customer ids outside the current stylist scope', async () => {
    prisma.customer.findFirst.mockResolvedValue(null);

    await expect(
      service.createSimulation(BigInt(7), {
        customerId: '999',
        originImage: 'https://cdn.example.com/origin.jpg',
        templateIds: ['11'],
      }),
    ).rejects.toThrow('顾客不存在');
  });

  it('refreshes stale processing tasks and returns PARTIAL_SUCCESS when mixed', async () => {
    prisma.aiHairSimulation.findFirst.mockResolvedValue({
      id: BigInt(91),
      customerId: BigInt(5),
      hairstylistId: BigInt(7),
      originImage: 'https://cdn.example.com/origin.jpg',
      simulateRemark: 'airy',
      createTime: new Date('2026-06-28T09:00:00Z'),
    });
    prisma.customer.findFirst.mockResolvedValue({
      id: BigInt(5),
      name: 'Mika',
      avatar: 'https://cdn.example.com/mika.png',
      phone: '090',
      expectContact: 'LINE',
    });
    prisma.aiHairSimulationTask.findMany
      .mockResolvedValueOnce([
        {
          id: BigInt(1),
          templateId: '11',
          customerId: BigInt(5),
          taskId: 'task-11',
          taskStatus: 'PROCESSING',
          resultImages: null,
          errorMsg: null,
          taskStartTime: new Date('2026-06-28T10:00:00Z'),
          taskFinishTime: null,
          updateTime: new Date(Date.now() - 20_000),
          isDeleted: 0,
        },
        {
          id: BigInt(2),
          templateId: '12',
          customerId: BigInt(5),
          taskId: 'task-12',
          taskStatus: 'FAILED',
          resultImages: null,
          errorMsg: 'template invalid',
          taskStartTime: new Date('2026-06-28T10:00:00Z'),
          taskFinishTime: new Date('2026-06-28T10:02:00Z'),
          updateTime: new Date('2026-06-28T10:02:00Z'),
          isDeleted: 0,
        },
      ])
      .mockResolvedValueOnce([
        {
          id: BigInt(1),
          templateId: '11',
          customerId: BigInt(5),
          taskId: 'task-11',
          taskStatus: 'SUCCESSES',
          resultImages: JSON.stringify(['https://cdn.example.com/result.png']),
          errorMsg: null,
          taskStartTime: new Date('2026-06-28T10:00:00Z'),
          taskFinishTime: new Date('2026-06-28T10:01:00Z'),
          updateTime: new Date('2026-06-28T10:01:00Z'),
          isDeleted: 0,
        },
        {
          id: BigInt(2),
          templateId: '12',
          customerId: BigInt(5),
          taskId: 'task-12',
          taskStatus: 'FAILED',
          resultImages: null,
          errorMsg: 'template invalid',
          taskStartTime: new Date('2026-06-28T10:00:00Z'),
          taskFinishTime: new Date('2026-06-28T10:02:00Z'),
          updateTime: new Date('2026-06-28T10:02:00Z'),
          isDeleted: 0,
        },
      ]);
    prisma.hairTemplate.findMany.mockResolvedValue([
      {
        id: BigInt(11),
        templateName: 'Layer Bob',
        coverUrl: '',
        category: 'SHORT',
        isSystemTemplate: 'NO',
      },
      {
        id: BigInt(12),
        templateName: 'Classic Medium',
        coverUrl: '',
        category: 'MEDIUM',
        isSystemTemplate: 'YES',
      },
    ]);
    aiClient.getResult.mockResolvedValue({
      status: 'successes',
      message: '',
      images: ['https://cdn.example.com/result.png'],
    });

    const result = await service.getSimulationDetail(BigInt(7), '91');

    expect(aiClient.getResult).toHaveBeenCalledWith('task-11');
    expect(prisma.aiHairSimulationTask.update).toHaveBeenCalledWith(
      expect.objectContaining({
        data: expect.objectContaining({
          taskStatus: 'SUCCESSES',
          resultImages: JSON.stringify(['https://cdn.example.com/result.png']),
        }),
      }),
    );
    expect(result.createdAt).toBe('2026-06-28T09:00:00.000Z');
    expect(result.overallStatus).toBe('PARTIAL_SUCCESS');
  });

  it('lists flattened customer gallery cards in descending simulation time order', async () => {
    prisma.customer.findFirst.mockResolvedValue({ id: BigInt(5) });
    prisma.aiHairSimulation.findMany.mockResolvedValue([
      {
        id: BigInt(91),
        customerId: BigInt(5),
        hairstylistId: BigInt(7),
        createTime: new Date('2026-06-28T09:00:00Z'),
        isDeleted: 0,
      },
      {
        id: BigInt(88),
        customerId: BigInt(5),
        hairstylistId: BigInt(7),
        createTime: new Date('2026-06-27T09:00:00Z'),
        isDeleted: 0,
      },
    ]);
    prisma.aiHairSimulationTask.findMany.mockResolvedValue([
      {
        id: BigInt(1),
        simulationId: BigInt(91),
        templateId: '11',
        taskId: 'task-11',
        taskStatus: 'SUCCESSES',
        resultImages: JSON.stringify([
          'https://cdn.example.com/result-2.png',
          'https://cdn.example.com/result-1.png',
        ]),
        isDeleted: 0,
      },
      {
        id: BigInt(2),
        simulationId: BigInt(88),
        templateId: '12',
        taskId: 'task-12',
        taskStatus: 'FAILED',
        resultImages: null,
        isDeleted: 0,
      },
    ]);
    prisma.hairTemplate.findMany.mockResolvedValue([
      {
        id: BigInt(11),
        templateName: 'Layer Bob',
      },
    ]);

    const result = await service.listCustomerSimulationGallery(BigInt(7), '5');

    expect(result.items).toEqual([
      {
        simulationId: '91',
        taskId: 'task-11',
        imageUrl: 'https://cdn.example.com/result-2.png',
        templateName: 'Layer Bob',
        createdAt: '2026-06-28T09:00:00.000Z',
        taskStatus: 'SUCCESSES',
      },
      {
        simulationId: '91',
        taskId: 'task-11',
        imageUrl: 'https://cdn.example.com/result-1.png',
        templateName: 'Layer Bob',
        createdAt: '2026-06-28T09:00:00.000Z',
        taskStatus: 'SUCCESSES',
      },
    ]);
  });
});