import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { fetchWithCache } from '../../../src/cache';
import { VERSION } from '../../../src/constants';
import logger from '../../../src/logger';
import {
  ADDITIONAL_PLUGINS,
  ALL_PLUGINS,
  BASE_PLUGINS,
  CANARY_BREAKING_STRATEGY_IDS,
  HARM_PLUGINS,
  PII_PLUGINS,
  REDTEAM_PROVIDER_HARM_PLUGINS,
  UNALIGNED_PROVIDER_HARM_PLUGINS,
} from '../../../src/redteam/constants';
import { Plugins } from '../../../src/redteam/plugins/index';
import { neverGenerateRemote, shouldGenerateRemote } from '../../../src/redteam/remoteGeneration';
import { getShortPluginId } from '../../../src/redteam/util';
import {
  createMockProvider,
  createProviderResponse,
  type MockApiProvider,
} from '../../factories/provider';

import type { FetchWithCacheResult } from '../../../src/cache';
import type { TestCase } from '../../../src/types/index';

vi.mock('../../../src/cache');
vi.mock('../../../src/cliState', () => ({
  __esModule: true,
  default: { remote: false },
}));
vi.mock('../../../src/redteam/remoteGeneration', async (importOriginal) => {
  return {
    ...(await importOriginal()),
    getRemoteGenerationUrl: vi.fn().mockReturnValue('http://test-url'),
    getRemoteHealthUrl: vi.fn().mockReturnValue('http://test-health-url'),
    neverGenerateRemote: vi.fn().mockReturnValue(false),
    shouldGenerateRemote: vi.fn().mockReturnValue(false),
  };
});
vi.mock('../../../src/util/apiHealth', async (importOriginal) => {
  return {
    ...(await importOriginal()),

    checkRemoteHealth: vi.fn().mockResolvedValue({
      status: 'OK',
      message: 'API is healthy',
    }),
  };
});

// Helper function to create mock fetch responses
function mockFetchResponse(result: any[]): FetchWithCacheResult<unknown> {
  return {
    data: { result },
    cached: false,
    status: 200,
    statusText: 'OK',
  };
}

describe('Plugins', () => {
  let mockProvider: MockApiProvider;

  beforeEach(() => {
    mockProvider = createMockProvider({
      response: createProviderResponse({
        output: 'Sample output',
        error: null as any,
      }),
    });

    // Reset all mocks
    vi.clearAllMocks();
    vi.mocked(fetchWithCache).mockReset();
  });

  describe('plugin registration', () => {
    it('should register all base plugins', () => {
      const basePluginKeys = [
        'contracts',
        'cross-session-leak',
        'debug-access',
        'excessive-agency',
        'hallucination',
        'imitation',
        'intent',
        'overreliance',
        'politics',
        'policy',
        'prompt-extraction',
        'rbac',
        'shell-injection',
        'sql-injection',
      ];

      basePluginKeys.forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });

    it('should register all aligned harm plugins', () => {
      Object.keys(REDTEAM_PROVIDER_HARM_PLUGINS).forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });

    it('should register all unaligned harm plugins', () => {
      Object.keys(UNALIGNED_PROVIDER_HARM_PLUGINS).forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });

    it('should register all PII plugins', () => {
      PII_PLUGINS.forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });

    it('should register all remote plugins', () => {
      const remotePluginKeys = [
        'ascii-smuggling',
        'bfla',
        'bola',
        'competitors',
        'hijacking',
        'religion',
        'ssrf',
        'indirect-prompt-injection',
        'rag-poisoning',
      ];

      remotePluginKeys.forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });
  });

  describe('plugin validation', () => {
    it('should validate intent plugin config', async () => {
      const intentPlugin = Plugins.find((p) => p.key === 'intent');
      expect(() => intentPlugin?.validate?.({})).toThrow(
        'Intent plugin requires `config.intent` to be set',
      );
    });

    it('should validate policy plugin config', async () => {
      const policyPlugin = Plugins.find((p) => p.key === 'policy');
      expect(() => policyPlugin?.validate?.({})).toThrow(
        'Invariant failed: One of the policy plugins is invalid. The `config` property of a policy plugin must be `{ "policy": { "id": "<policy_id>", "text": "<policy_text>" } }` or `{ "policy": "<policy_text>" }`. Received: {}',
      );
    });

    it('should validate indirect prompt injection plugin config', async () => {
      const indirectPlugin = Plugins.find((p) => p.key === 'indirect-prompt-injection');
      expect(() => indirectPlugin?.validate?.({})).toThrow(
        'Indirect prompt injection plugin requires `config.indirectInjectionVar` to be set',
      );
    });

    it('should validate rag-poisoning plugin config', async () => {
      const ragPlugin = Plugins.find((p) => p.key === 'rag-poisoning');
      expect(() => ragPlugin?.validate?.({})).toThrow('config.intendedResults');
      expect(() => ragPlugin?.validate?.({ intendedResults: [] })).toThrow(
        'config.intendedResults',
      );
    });
  });

  describe('max chars retries', () => {
    it('should retry oversized local PII generations', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return false;
      });

      vi.spyOn(mockProvider, 'callApi')
        .mockResolvedValueOnce({
          output: 'Prompt: this prompt is too long\nPrompt: tiny',
          error: undefined,
        })
        .mockResolvedValueOnce({
          output: 'Prompt: short',
          error: undefined,
        });

      const plugin = Plugins.find((p) => p.key === 'pii:direct');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 2,
        config: { maxCharsPerMessage: 10 },
        delayMs: 0,
      });

      expect(mockProvider.callApi).toHaveBeenCalledTimes(2);
      expect(mockProvider.callApi).toHaveBeenNthCalledWith(
        2,
        expect.stringContaining('Generate replacement prompts only'),
      );
      expect(result?.map((testCase) => testCase.vars?.testVar).sort()).toEqual(['short', 'tiny']);
    });

    it('should retry oversized remote generations and strip retry modifiers from metadata', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      vi.mocked(fetchWithCache)
        .mockResolvedValueOnce(
          mockFetchResponse([
            {
              vars: { testVar: 'this prompt is too long' },
            },
          ]),
        )
        .mockResolvedValueOnce(
          mockFetchResponse([
            {
              vars: { testVar: 'short' },
            },
          ]),
        );

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {
          modifiers: {
            maxCharsPerMessage: 'Each generated user message must be 10 characters or fewer.',
          },
        },
        delayMs: 0,
      });

      expect(fetchWithCache).toHaveBeenCalledTimes(2);

      const retryRequestBody = JSON.parse((vi.mocked(fetchWithCache).mock.calls[1][1] as any).body);
      expect(retryRequestBody.config.modifiers.__maxCharsPerMessageRetry).toContain(
        'Generate replacement prompts only',
      );

      expect(result).toEqual([
        {
          vars: { testVar: 'short' },
          metadata: {
            pluginId: 'ssrf',
            pluginConfig: {
              modifiers: {
                maxCharsPerMessage: 'Each generated user message must be 10 characters or fewer.',
              },
            },
          },
        },
      ]);
    });
  });

  describe('remote generation', () => {
    beforeEach(() => {
      vi.clearAllMocks();
    });

    afterEach(() => {
      vi.restoreAllMocks();
    });

    it('should call remote generation with correct parameters', async () => {
      // Mock both functions for this test
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      const mockResponse = {
        data: { result: [{ test: 'case' }] },
        cached: false,
        status: 200,
        statusText: 'OK',
      };

      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {},
        delayMs: 0,
        targetId: 'cloud-target-123',
      });

      expect(fetchWithCache).toHaveBeenCalledWith(
        expect.any(String),
        expect.objectContaining({
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            config: {},
            injectVar: 'testVar',
            n: 1,
            purpose: 'test',
            task: 'ssrf',
            targetId: 'cloud-target-123',
            version: VERSION,
            email: null,
          }),
        }),
        expect.any(Number),
      );
      expect(result).toEqual([
        { test: 'case', metadata: { pluginId: 'ssrf', pluginConfig: { modifiers: {} } } },
      ]);
    });

    it('should strip graderExamples from remote generation request but preserve in metadata', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      const mockResponse = {
        data: { result: [{ vars: { testVar: 'test content' } }] },
        cached: false,
        status: 200,
        statusText: 'OK',
      };

      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const graderExamples = [
        { output: 'safe response', pass: true, score: 1, reason: 'Correctly refused' },
        { output: 'unsafe response', pass: false, score: 0, reason: 'Should have refused' },
      ];

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {
          graderExamples,
          language: 'en',
        },
        delayMs: 0,
      });

      // Verify graderExamples are NOT in the request body sent to server
      const callArgs = vi.mocked(fetchWithCache).mock.calls[0];
      const requestBody = JSON.parse((callArgs[1] as any).body);
      expect(requestBody.config).not.toHaveProperty('graderExamples');
      expect(requestBody.config).toHaveProperty('language', 'en');

      // Verify graderExamples ARE preserved in the returned test case metadata
      expect(result).toHaveLength(1);
      expect(result![0].metadata?.pluginConfig).toHaveProperty('graderExamples', graderExamples);
      expect(result![0].metadata?.pluginConfig).toHaveProperty('language', 'en');
    });

    it('should accept server-materialized multi-input remote generation results', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      vi.mocked(fetchWithCache).mockResolvedValue({
        data: {
          materializationHandled: true,
          result: [
            {
              metadata: {
                inputMaterialization: {
                  document: {
                    injectionPlacement: 'comment',
                    wrapperSummary: 'Internal planning memo with reviewer note.',
                  },
                },
              },
              vars: {
                document:
                  'data:application/vnd.openxmlformats-officedocument.wordprocessingml.document;base64,Zm9v',
                testVar: '{"document":"Summarize the reviewer notes."}',
              },
            },
          ],
        },
        cached: false,
        status: 200,
        statusText: 'OK',
      });

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {
          inputs: {
            document: {
              description: 'Uploaded planning document',
              type: 'docx',
            },
          },
        },
        delayMs: 0,
      });

      expect(result).toEqual([
        {
          metadata: {
            inputMaterialization: {
              document: {
                injectionPlacement: 'comment',
                wrapperSummary: 'Internal planning memo with reviewer note.',
              },
            },
            pluginConfig: {
              inputs: {
                document: {
                  description: 'Uploaded planning document',
                  type: 'docx',
                },
              },
              modifiers: expect.objectContaining({
                __outputFormat: expect.stringContaining('<Prompt>'),
              }),
            },
            pluginId: 'ssrf',
          },
          vars: {
            document:
              'data:application/vnd.openxmlformats-officedocument.wordprocessingml.document;base64,Zm9v',
            testVar: '{"document":"Summarize the reviewer notes."}',
          },
        },
      ]);
    });

    it('should fail fast when remote multi-input generation hits an older server', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      vi.mocked(fetchWithCache).mockResolvedValue({
        data: {
          result: [
            {
              vars: {
                testVar: '{"document":"Summarize the reviewer notes."}',
              },
            },
          ],
        },
        cached: false,
        status: 200,
        statusText: 'OK',
      });

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const errorSpy = vi.spyOn(logger, 'error').mockImplementation(() => {});

      await expect(
        plugin?.action({
          provider: mockProvider,
          purpose: 'test',
          injectVar: 'testVar',
          n: 1,
          config: {
            inputs: {
              document: {
                description: 'Uploaded planning document',
                type: 'docx',
              },
            },
          },
          delayMs: 0,
        }),
      ).resolves.toEqual([]);

      expect(errorSpy).toHaveBeenCalledWith(
        expect.stringContaining(
          'Remote plugin generation for ssrf requires remote multi-input materialization support from a newer Promptfoo server.',
        ),
      );
      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('http://test-url'));
    });

    it('should preserve coding-agent canary-breaking strategy exclusions in metadata', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      const mockResponse = mockFetchResponse([{ vars: { testVar: 'test content' } }]);
      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const plugin = Plugins.find((p) => p.key === 'coding-agent:secret-env-read');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: { excludeStrategies: ['custom-strategy'] },
        delayMs: 0,
      });

      const callArgs = vi.mocked(fetchWithCache).mock.calls[0];
      const requestBody = JSON.parse((callArgs[1] as any).body);
      expect(requestBody.config.excludeStrategies).toEqual([
        ...CANARY_BREAKING_STRATEGY_IDS,
        'custom-strategy',
      ]);
      expect(result?.[0].metadata?.pluginConfig?.excludeStrategies).toEqual([
        ...CANARY_BREAKING_STRATEGY_IDS,
        'custom-strategy',
      ]);
    });

    it.each([
      'coding-agent:core',
      'coding-agent:all',
    ])('should preserve %s canary-breaking strategy exclusions in metadata', async (pluginId) => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });

      const mockResponse = mockFetchResponse([{ vars: { testVar: 'test content' } }]);
      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const plugin = Plugins.find((p) => p.key === pluginId);
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: { excludeStrategies: ['custom-strategy'] },
        delayMs: 0,
      });

      const callArgs = vi.mocked(fetchWithCache).mock.calls[0];
      const requestBody = JSON.parse((callArgs[1] as any).body);
      expect(requestBody.config.excludeStrategies).toEqual([
        ...CANARY_BREAKING_STRATEGY_IDS,
        'custom-strategy',
      ]);
      expect(result?.[0].metadata?.pluginConfig?.excludeStrategies).toEqual([
        ...CANARY_BREAKING_STRATEGY_IDS,
        'custom-strategy',
      ]);
    });

    it('should handle remote generation errors', async () => {
      // Mock shouldGenerateRemote to return true for this test
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });

      vi.mocked(fetchWithCache).mockRejectedValue(new Error('Network error'));

      const plugin = Plugins.find((p) => p.key === 'contracts');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {},
        delayMs: 0,
      });

      expect(result).toEqual([]);
    });

    it('should add harmful assertions for harmful remote plugins', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return true;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });
      const mockResponse: FetchWithCacheResult<unknown> = {
        data: {
          result: [
            {
              vars: { testVar: 'test content' },
              metadata: { harmCategory: 'Misinformation/Disinformation' },
            },
          ],
        },
        cached: false,
        status: 200,
        statusText: 'OK',
      };
      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const plugin = Plugins.find((p) => p.key === 'harmful:misinformation-disinformation');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {},
        delayMs: 0,
      });

      expect(result).toHaveLength(1);
      expect(result![0].assert).toBeDefined();
      expect(result![0].assert).toEqual([
        {
          metric: 'Misinformation & Disinformation - Harmful lies and propaganda',
          type: 'promptfoo:redteam:harmful:misinformation-disinformation',
        },
      ]);
    });

    it('should not modify assertions for non-harmful remote plugins', async () => {
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return false;
      });
      const originalTestCase = {
        assert: [
          {
            type: 'test',
            metric: 'Original',
          },
        ],
        vars: {
          testVar: 'test content',
        },
        metadata: {
          pluginId: 'ssrf',
        },
      };

      const mockResponse = mockFetchResponse([originalTestCase]);
      vi.mocked(fetchWithCache).mockResolvedValue(mockResponse);

      const plugin = Plugins.find((p) => p.key === 'ssrf');
      const result = await plugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        config: {},
        delayMs: 0,
      });

      expect(result).toHaveLength(1);
      expect(result?.[0]).toEqual({
        ...originalTestCase,
        metadata: { ...originalTestCase.metadata, pluginConfig: { modifiers: {} } },
      });
    });
  });

  describe('unaligned harm plugins', () => {
    it('should require remote generation', async () => {
      vi.mocked(shouldGenerateRemote).mockImplementation(function () {
        return false;
      });
      vi.mocked(neverGenerateRemote).mockImplementation(function () {
        return true;
      });
      const unalignedPlugin = Plugins.find(
        (p) => p.key === Object.keys(UNALIGNED_PROVIDER_HARM_PLUGINS)[0],
      );
      const result = await unalignedPlugin?.action({
        provider: mockProvider,
        purpose: 'test',
        injectVar: 'testVar',
        n: 1,
        delayMs: 0,
      });
      expect(result).toEqual([]);
    });
  });

  describe('plugin metadata', () => {
    let remoteTestCases: TestCase[];

    beforeEach(() => {
      // Setup mock response for remote tests
      remoteTestCases = [
        {
          vars: { testVar: 'test content' },
          metadata: { pluginId: 'remote-test-plugin' },
        },
      ];
      vi.mocked(fetchWithCache).mockResolvedValue(mockFetchResponse(remoteTestCases));

      // Mock callApi to return a test response
      vi.spyOn(mockProvider, 'callApi').mockResolvedValue({
        output: 'Test response for plugin test',
        error: undefined,
      });
    });

    it('should correctly format pluginId using getShortPluginId', () => {
      // Test with different types of plugin IDs
      const testCases = [
        // Simple plugin IDs
        { input: 'contracts', expected: 'contracts' },
        { input: 'excessive-agency', expected: 'excessive-agency' },
        { input: 'hallucination', expected: 'hallucination' },

        // IDs with colon
        { input: 'harmful:privacy', expected: 'harmful:privacy' },
        { input: 'harmful:hate', expected: 'harmful:hate' },
        { input: 'pii:direct', expected: 'pii:direct' },

        // IDs with prefixes
        { input: 'promptfoo:redteam:contracts', expected: 'contracts' },
        { input: 'promptfoo:redteam:harmful:privacy', expected: 'harmful:privacy' },
        { input: 'promptfoo:redteam:pii:direct', expected: 'pii:direct' },
      ];

      // Test each case
      testCases.forEach(({ input, expected }) => {
        const result = getShortPluginId(input);
        expect(result).toBe(expected);
      });
    });

    // Simplified test just to verify plugins output
    it('should verify plugins exist', () => {
      // Check for common plugins
      const plugins = ['contracts', 'excessive-agency', 'prompt-extraction', 'pii:direct'];

      plugins.forEach((key) => {
        const plugin = Plugins.find((p) => p.key === key);
        expect(plugin).toBeDefined();
      });
    });
  });

  describe('plugin registry completeness', () => {
    it('should have all plugins from constants registered', () => {
      // Get all the plugin keys that should be registered
      const expectedPlugins = [
        ...BASE_PLUGINS,
        ...Object.keys(HARM_PLUGINS),
        ...PII_PLUGINS,
        ...ADDITIONAL_PLUGINS,
      ];

      // Verify all expected plugin keys are present in the registry
      // Note: We don't expect exact equality because some plugins like collections may not be in the expected list
      const registeredPluginKeys = Plugins.map((p) => p.key);
      expect(registeredPluginKeys).toEqual(expect.arrayContaining(expectedPlugins));
    });

    it('should have unique plugin keys', () => {
      // Check that there are no duplicate plugin keys
      const pluginKeys = Plugins.map((p) => p.key);
      const uniqueKeys = new Set(pluginKeys);

      expect(pluginKeys).toHaveLength(uniqueKeys.size);

      // Cross-check with ALL_PLUGINS
      ALL_PLUGINS.forEach((pluginKey) => {
        const matchingPlugins = Plugins.filter((p) => p.key === pluginKey);
        // Each key should appear at most once (some might not be registered)
        expect(matchingPlugins.length).toBeLessThanOrEqual(1);
      });
    });
  });
});