/**
 * Edge cases for BuildContext: unknown cubes, session replay and auth flags.
 */

import { beforeEach, describe, expect, it, vi } from 'vitest';
import { z } from 'zod';
import { BuildContext } from '../src/cubes/dependencies.js';
import { Cube, Manifest } from '../src/cubes/types.js';
import { Variables } from '../src/nopy.common.js';
import type { NopyConfig } from '../src/nopy.config.js';
import type { NopySession } from '../src/nopy.session.js';

vi.mock('../src/nopy.prompts.js', async () => {
  const actual = await vi.importActual('../src/nopy.prompts.js');
  return { ...actual, VariableAssignment: vi.fn() };
});

import { VariableAssignment } from '../src/nopy.prompts.js';

const testCube = (id: string, schema = z.object({})) =>
  new Cube(Manifest.create({ id, name: `Test ${id}`, schema }), `/test/${id}`, 'deploy.py');

const config = { env: {} } as NopyConfig;
const session = (cubes: NopySession['cubes'] = []) => ({ cubes }) as NopySession;

beforeEach(() => {
  vi.clearAllMocks();
});

describe('BuildContext error handling', () => {
  it('throws when the requested cube does not exist', async () => {
    const context = new BuildContext({}, new Variables(), session(), config, { method: 'ssh' });

    await expect(context.resolveCube('ghost', 'host1')).rejects.toThrow('Cube not found: ghost');
  });

  it('throws when a dependency does not exist', async () => {
    const cubeB = new Cube(
      Manifest.create({
        id: 'cube-b',
        name: 'B',
        schema: z.object({}),
        dependencies: () => ['ghost'],
      }),
      '/test/cube-b',
      'deploy.py'
    );
    const context = new BuildContext({ 'cube-b': cubeB }, new Variables(), session(), config, {
      method: 'ssh',
    });

    await expect(context.resolveCube('cube-b', 'host1')).rejects.toThrow('Cube not found: ghost');
  });
});

describe('BuildContext session replay', () => {
  it('takes variables from the session instead of prompting', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const vars = new Variables();
    const context = new BuildContext(
      { 'cube-a': cube },
      vars,
      session([{ key: 'cube-a', variables: { PORT: '9090' } }]),
      config,
      { method: 'ssh' },
      { isSessionReplay: true }
    );

    await context.resolveCube('cube-a', 'host1');

    expect(VariableAssignment).not.toHaveBeenCalled();
    expect(context.deployCalls[0].env.PORT).toBe('9090');
  });

  it('falls back to schema defaults when the session has no entry for the cube', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const context = new BuildContext(
      { 'cube-a': cube },
      new Variables(),
      session([{ key: 'other', variables: { PORT: '9090' } }]),
      config,
      { method: 'ssh' },
      { isSessionReplay: true }
    );

    await context.resolveCube('cube-a', 'host1');

    expect(VariableAssignment).not.toHaveBeenCalled();
    expect(context.deployCalls[0].env.PORT).toBe('3000');
  });

  it('prompts when not replaying', async () => {
    const context = new BuildContext(
      { 'cube-a': testCube('cube-a') },
      new Variables(),
      session(),
      config,
      { method: 'ssh' }
    );

    await context.resolveCube('cube-a', 'host1');

    expect(VariableAssignment).toHaveBeenCalled();
  });
});

describe('BuildContext --use-defaults', () => {
  const withDefaults = (cube: Cube, variables = new Variables(), cfg = config) =>
    new BuildContext(
      { [cube.id]: cube },
      variables,
      session(),
      cfg,
      { method: 'ssh' },
      { useDefaults: true }
    );

  it('skips the prompts and deploys the schema defaults', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const context = withDefaults(cube);

    await context.resolveCube('cube-a', 'host1');

    expect(VariableAssignment).not.toHaveBeenCalled();
    expect(context.deployCalls[0].env.PORT).toBe('3000');
  });

  it('lets global env steer the run', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const context = withDefaults(cube, new Variables({ PORT: '8080' }));

    await context.resolveCube('cube-a', 'host1');

    expect(context.deployCalls[0].command.join(' ')).toContain('--data "PORT=8080"');
  });

  it('refuses to run a cube whose variable nothing can supply', async () => {
    const cube = testCube('cube-a', z.object({ SSID: z.string(), PSK: z.string() }));
    const context = withDefaults(cube);

    await expect(context.resolveCube('cube-a', 'host1')).rejects.toThrow(
      /Cube "cube-a" cannot run with --use-defaults: SSID, PSK have no default values/
    );
    expect(context.deployCalls).toHaveLength(0);
  });

  it('names a single missing variable in the singular', async () => {
    const cube = testCube('cube-a', z.object({ SSID: z.string() }));

    await expect(withDefaults(cube).resolveCube('cube-a', 'host1')).rejects.toThrow(
      'SSID has no default value'
    );
  });

  it('accepts a required variable supplied by global env', async () => {
    const cube = testCube('cube-a', z.object({ SSID: z.string() }));
    const context = withDefaults(cube, new Variables({ SSID: 'home' }));

    await context.resolveCube('cube-a', 'host1');

    expect(context.deployCalls[0].env.SSID).toBe('home');
  });

  it('accepts a required variable supplied by a dependency', async () => {
    const cube = testCube('cube-a', z.object({ SSID: z.string() }));
    const context = withDefaults(cube);

    await context.resolveCube('cube-a', 'host1', { SSID: 'from-dep' });

    expect(context.deployCalls[0].env.SSID).toBe('from-dep');
  });

  it('still resolves dependencies and hooks', async () => {
    const dep = testCube('dep');
    const main = new Cube(
      Manifest.create({
        id: 'main',
        name: 'Main',
        schema: z.object({ FLAG: z.boolean().default(true) }),
        dependencies: (vars: Record<string, unknown>) => (vars.FLAG ? ['dep'] : []),
      }),
      '/test/main',
      'deploy.py'
    );
    const context = new BuildContext(
      { dep, main },
      new Variables(),
      session(),
      config,
      { method: 'ssh' },
      { useDefaults: true }
    );

    await context.resolveCube('main', 'host1');

    expect(context.deployCalls.map((c) => c.cube)).toEqual(['dep', 'main']);
  });
});

describe('BuildContext command construction', () => {
  const build = (auth: { method: string; username?: string; password?: string }) => {
    const context = new BuildContext(
      { 'cube-a': testCube('cube-a') },
      new Variables(),
      session(),
      config,
      auth
    );
    return context.resolveCube('cube-a', 'host1').then(() => context);
  };

  it('adds --user/--password for complete password auth', async () => {
    const context = await build({ method: 'password', username: 'deploy', password: 'pw' });

    expect(context.deployCalls[0].command.join(' ')).toContain('--user deploy --password pw');
  });

  it('omits credentials for ssh auth', async () => {
    const context = await build({ method: 'ssh' });

    expect(context.deployCalls[0].command.join(' ')).not.toContain('--user');
  });

  it('omits credentials when the password is missing', async () => {
    const context = await build({ method: 'password', username: 'deploy' });

    expect(context.deployCalls[0].command.join(' ')).not.toContain('--user');
  });

  it('omits credentials when the username is missing', async () => {
    const context = await build({ method: 'password', password: 'pw' });

    expect(context.deployCalls[0].command.join(' ')).not.toContain('--user');
  });

  it('passes cube variables as --data flags and points at the deploy script', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const context = new BuildContext({ 'cube-a': cube }, new Variables(), session(), config, {
      method: 'ssh',
    });

    await context.resolveCube('cube-a', 'host1');
    const command = context.deployCalls[0].command.join(' ');

    expect(command).toContain('--data "PORT=3000"');
    expect(command).toContain('--chdir /test/cube-a');
    expect(command).toContain('/test/cube-a/deploy.py');
    expect(context.deployCalls[0].cwd).toBe('/test/cube-a');
  });

  it('builds a separate call per host but records the cube session once', async () => {
    const context = new BuildContext(
      { 'cube-a': testCube('cube-a') },
      new Variables(),
      session(),
      config,
      { method: 'ssh' }
    );

    await context.resolveCube('cube-a', 'host1');
    await context.resolveCube('cube-a', 'host2');

    expect(context.deployCalls.map((c) => c.host)).toEqual(['host1', 'host2']);
    expect(context.cubeSessions).toHaveLength(1);
  });

  it('applies caller overrides as params', async () => {
    const cube = testCube('cube-a', z.object({ PORT: z.string().default('3000') }));
    const context = new BuildContext({ 'cube-a': cube }, new Variables(), session(), config, {
      method: 'ssh',
    });

    await context.resolveCube('cube-a', 'host1', { PORT: '8080' });

    expect(context.deployCalls[0].env.PORT).toBe('8080');
  });
});