/**
 * Stream Store Tests
 *
 * Tests for chat mode management, follow-up suggestions,
 * cancel stream, and skill search.
 *
 * Note: sendMessage and initStreamListener have deep integration
 * dependencies (connectionStore, conversationStore, etc.) and are
 * tested indirectly through chatStore.test.ts. This file tests
 * the standalone actions.
 */

import { describe, it, expect, vi, beforeEach } from 'vitest';
import { localStorageMock } from '../setup';

// ── Mock all external dependencies ──

vi.mock('../../src/store/connectionStore', () => ({
  getClient: vi.fn(() => ({
    chatStream: vi.fn(),
    chat: vi.fn(),
    onAgentStream: vi.fn(() => () => {}),
    getState: vi.fn(() => 'disconnected'),
    cancelStream: vi.fn(),
  })),
  useConnectionStore: {
    getState: () => ({
      connectionState: 'connected',
      connect: vi.fn(),
    }),
    setState: vi.fn(),
    subscribe: () => () => {},
  },
}));

vi.mock('../../src/store/chat/conversationStore', () => ({
  useConversationStore: {
    getState: () => ({
      currentAgent: { id: '1', name: 'ZCLAW' },
      sessionKey: null,
      currentConversationId: null,
      agents: [{ id: '1', name: 'ZCLAW' }],
    }),
    setState: vi.fn(),
    subscribe: () => () => {},
  },
  resolveGatewayAgentId: vi.fn(() => 'agent-1'),
}));

vi.mock('../../src/store/chat/messageStore', () => ({
  useMessageStore: {
    getState: () => ({
      totalInputTokens: 0,
      totalOutputTokens: 0,
      addTokenUsage: vi.fn(),
    }),
  },
}));

vi.mock('../../src/store/chat/artifactStore', () => ({
  useArtifactStore: {
    getState: () => ({
      addArtifact: vi.fn(),
    }),
  },
}));

vi.mock('../../src/store/offlineStore', () => ({
  useOfflineStore: {
    getState: () => ({
      queueMessage: vi.fn(() => 'queued_123'),
    }),
  },
  isOffline: vi.fn(() => false),
}));

vi.mock('../../src/lib/gateway-client', () => ({
  getGatewayClient: vi.fn(),
}));

vi.mock('../../src/lib/intelligence-client', () => ({
  intelligenceClient: {
    compactor: {
      checkThreshold: vi.fn(),
      compact: vi.fn(),
    },
    memory: {
      search: vi.fn(),
    },
    identity: {
      buildPrompt: vi.fn(),
    },
    reflection: {
      recordConversation: vi.fn(() => Promise.resolve()),
      shouldReflect: vi.fn(() => Promise.resolve(false)),
      reflect: vi.fn(),
    },
  },
}));

vi.mock('../../src/lib/memory-extractor', () => ({
  getMemoryExtractor: vi.fn(() => ({
    extractFromConversation: vi.fn(() => Promise.resolve([])),
  })),
}));

vi.mock('../../src/lib/skill-discovery', () => ({
  getSkillDiscovery: vi.fn(() => ({
    searchSkills: vi.fn(() => ({ results: [], totalAvailable: 0 })),
  })),
}));

vi.mock('../../src/lib/speech-synth', () => ({
  speechSynth: {
    speak: vi.fn(() => Promise.resolve()),
  },
}));

vi.mock('../../src/lib/crypto-utils', () => ({
  generateRandomString: (len: number) => 'x'.repeat(len),
}));

vi.mock('../../src/lib/logger', () => ({
  createLogger: () => ({
    info: vi.fn(),
    warn: vi.fn(),
    error: vi.fn(),
    debug: vi.fn(),
  }),
}));

// CHAT_MODES mock - must match the actual component structure
vi.mock('../../src/components/ai', () => ({
  CHAT_MODES: {
    thinking: {
      config: { thinking_enabled: true, reasoning_effort: 'high', plan_mode: false, subagent_enabled: false },
    },
    normal: {
      config: { thinking_enabled: false, reasoning_effort: 'medium', plan_mode: false, subagent_enabled: false },
    },
    agent: {
      config: { thinking_enabled: true, reasoning_effort: 'high', plan_mode: true, subagent_enabled: true },
    },
  },
}));

import { useStreamStore } from '../../src/store/chat/streamStore';

beforeEach(() => {
  vi.clearAllMocks();
  localStorageMock.clear();

  useStreamStore.setState({
    isStreaming: false,
    isLoading: false,
    chatMode: 'thinking',
    suggestions: [],
    activeRunId: null,
  });
});

// ═══════════════════════════════════════════════════════════════════
// Initial State
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — initial state', () => {
  it('should not be streaming', () => {
    expect(useStreamStore.getState().isStreaming).toBe(false);
  });

  it('should have thinking chat mode', () => {
    expect(useStreamStore.getState().chatMode).toBe('thinking');
  });

  it('should have empty suggestions', () => {
    expect(useStreamStore.getState().suggestions).toEqual([]);
  });

  it('should have no active run id', () => {
    expect(useStreamStore.getState().activeRunId).toBeNull();
  });

  it('should not be loading', () => {
    expect(useStreamStore.getState().isLoading).toBe(false);
  });
});

// ═══════════════════════════════════════════════════════════════════
// Chat Mode
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — setChatMode', () => {
  it('should switch to normal mode', () => {
    useStreamStore.getState().setChatMode('normal');
    expect(useStreamStore.getState().chatMode).toBe('normal');
  });

  it('should switch to agent mode', () => {
    useStreamStore.getState().setChatMode('agent');
    expect(useStreamStore.getState().chatMode).toBe('agent');
  });

  it('should switch back to thinking mode', () => {
    useStreamStore.getState().setChatMode('agent');
    useStreamStore.getState().setChatMode('thinking');
    expect(useStreamStore.getState().chatMode).toBe('thinking');
  });
});

// ═══════════════════════════════════════════════════════════════════
// getChatModeConfig
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — getChatModeConfig', () => {
  it('should return thinking config by default', () => {
    const config = useStreamStore.getState().getChatModeConfig();
    expect(config.thinking_enabled).toBe(true);
    expect(config.reasoning_effort).toBe('high');
  });

  it('should return normal config', () => {
    useStreamStore.getState().setChatMode('normal');
    const config = useStreamStore.getState().getChatModeConfig();
    expect(config.thinking_enabled).toBe(false);
    expect(config.reasoning_effort).toBe('medium');
  });

  it('should return agent config with subagent enabled', () => {
    useStreamStore.getState().setChatMode('agent');
    const config = useStreamStore.getState().getChatModeConfig();
    expect(config.subagent_enabled).toBe(true);
    expect(config.plan_mode).toBe(true);
  });
});

// ═══════════════════════════════════════════════════════════════════
// Suggestions
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — suggestions', () => {
  it('should set suggestions', () => {
    useStreamStore.getState().setSuggestions(['Suggestion 1', 'Suggestion 2']);
    expect(useStreamStore.getState().suggestions).toEqual(['Suggestion 1', 'Suggestion 2']);
  });

  it('should replace previous suggestions', () => {
    useStreamStore.getState().setSuggestions(['Old']);
    useStreamStore.getState().setSuggestions(['New 1', 'New 2']);
    expect(useStreamStore.getState().suggestions).toEqual(['New 1', 'New 2']);
  });

  it('should clear suggestions with empty array', () => {
    useStreamStore.getState().setSuggestions(['Something']);
    useStreamStore.getState().setSuggestions([]);
    expect(useStreamStore.getState().suggestions).toEqual([]);
  });
});

// ═══════════════════════════════════════════════════════════════════
// setIsLoading
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — setIsLoading', () => {
  it('should set loading state', () => {
    useStreamStore.getState().setIsLoading(true);
    expect(useStreamStore.getState().isLoading).toBe(true);
  });

  it('should unset loading state', () => {
    useStreamStore.getState().setIsLoading(true);
    useStreamStore.getState().setIsLoading(false);
    expect(useStreamStore.getState().isLoading).toBe(false);
  });
});

// ═══════════════════════════════════════════════════════════════════
// cancelStream (without chatStore injection)
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — cancelStream', () => {
  it('should do nothing when not streaming', () => {
    useStreamStore.getState().cancelStream();
    // No crash, state unchanged
    expect(useStreamStore.getState().isStreaming).toBe(false);
  });

  it('should not crash when no chatStore injected', () => {
    useStreamStore.setState({ isStreaming: true, activeRunId: 'run-123' });

    // Without _chat injected, cancelStream returns early
    expect(() => useStreamStore.getState().cancelStream()).not.toThrow();
  });
});

// ═══════════════════════════════════════════════════════════════════
// searchSkills
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — searchSkills', () => {
  it('should return search results', () => {
    const result = useStreamStore.getState().searchSkills('test query');

    expect(result).toHaveProperty('results');
    expect(result).toHaveProperty('totalAvailable');
    expect(Array.isArray(result.results)).toBe(true);
  });
});

// ═══════════════════════════════════════════════════════════════════
// initStreamListener
// ═══════════════════════════════════════════════════════════════════

describe('streamStore — initStreamListener', () => {
  it('should return unsubscribe function', () => {
    const unsubscribe = useStreamStore.getState().initStreamListener();
    expect(typeof unsubscribe).toBe('function');
    unsubscribe();
  });
});