import { BaseBrowserToolExecutor } from '../base-browser';
import { createErrorResponse, createSuccessResponse } from '../../../../common/tool-handler';
import { ERROR_MESSAGES } from '../../../../common/constants';

export class EnhancedSearchTool extends BaseBrowserToolExecutor {
  async chromeSearchGoogle(args: {
    query: string;
    openGoogle?: boolean;
    extractResults?: boolean;
    maxResults?: number;
  }) {
    const { query, openGoogle = true, extractResults = true, maxResults = 10 } = args;

    try {
      // Step 1: Navigate to Google if requested
      if (openGoogle) {
        await this.navigateToGoogle();
        await this.sleep(3000); // Wait for page to load
      }

      // Step 2: Find and fill search box
      const searchSuccess = await this.performGoogleSearch(query);
      if (!searchSuccess) {
        return createErrorResponse(
          'Failed to perform Google search - could not find or interact with search box',
        );
      }

      // Step 3: Wait for results to load
      await this.sleep(3000);

      // Step 4: Extract results if requested
      if (extractResults) {
        const results = await this.extractSearchResults(maxResults);
        return createSuccessResponse({
          query,
          searchCompleted: true,
          resultsExtracted: true,
          results,
        });
      }

      return createSuccessResponse({
        query,
        searchCompleted: true,
        resultsExtracted: false,
        message: 'Google search completed successfully',
      });
    } catch (error) {
      return createErrorResponse(
        `Error performing Google search: ${error instanceof Error ? error.message : 'Unknown error'}`,
      );
    }
  }

  async chromeSubmitForm(args: {
    formSelector?: string;
    inputSelector?: string;
    submitMethod?: 'enter' | 'button' | 'auto';
  }) {
    const { formSelector = 'form', inputSelector, submitMethod = 'auto' } = args;

    try {
      const tabs = await chrome.tabs.query({ active: true, currentWindow: true });
      if (!tabs[0]?.id) {
        return createErrorResponse(ERROR_MESSAGES.TAB_NOT_FOUND);
      }

      const tabId = tabs[0].id;

      // Inject form submission script
      await this.injectContentScript(tabId, ['inject-scripts/form-submit-helper.js']);

      const result = await this.sendMessageToTab(tabId, {
        action: 'submitForm',
        formSelector,
        inputSelector,
        submitMethod,
      });

      if (result.error) {
        return createErrorResponse(result.error);
      }

      return createSuccessResponse(result);
    } catch (error) {
      return createErrorResponse(
        `Error submitting form: ${error instanceof Error ? error.message : 'Unknown error'}`,
      );
    }
  }

  private async navigateToGoogle(): Promise<void> {
    const tabs = await chrome.tabs.query({ active: true, currentWindow: true });
    if (!tabs[0]?.id) {
      throw new Error('No active tab found');
    }

    await chrome.tabs.update(tabs[0].id, { url: 'https://www.google.com' });
  }

  private async performGoogleSearch(query: string): Promise<boolean> {
    const tabs = await chrome.tabs.query({ active: true, currentWindow: true });
    if (!tabs[0]?.id) {
      throw new Error('No active tab found');
    }

    const tabId = tabs[0].id;

    // Enhanced search box selectors
    const searchSelectors = [
      '#APjFqb', // Main Google search box ID
      'textarea[name="q"]', // Google search textarea
      'input[name="q"]', // Google search input (fallback)
      '[role="combobox"]', // Role-based selector
      '.gLFyf', // Google search box class
      'textarea[aria-label*="Search"]', // Aria-label based
      '[title*="Search"]', // Title attribute
      '.gsfi', // Google search field input class
      '#lst-ib', // Alternative Google search ID
      'input[type="search"]', // Generic search input
      'textarea[role="combobox"]', // Textarea with combobox role
    ];

    // Inject search helper script
    await this.injectContentScript(tabId, ['inject-scripts/enhanced-search-helper.js']);

    for (const selector of searchSelectors) {
      try {
        const result = await this.sendMessageToTab(tabId, {
          action: 'performGoogleSearch',
          selector,
          query,
        });

        if (result.success) {
          return true;
        }
      } catch (error) {
        console.debug(`Search selector ${selector} failed:`, error);
        continue;
      }
    }

    return false;
  }

  private async extractSearchResults(maxResults: number): Promise<any[]> {
    const tabs = await chrome.tabs.query({ active: true, currentWindow: true });
    if (!tabs[0]?.id) {
      throw new Error('No active tab found');
    }

    const tabId = tabs[0].id;

    const result = await this.sendMessageToTab(tabId, {
      action: 'extractSearchResults',
      maxResults,
    });

    return result.results || [];
  }

  private sleep(ms: number): Promise<void> {
    return new Promise((resolve) => setTimeout(resolve, ms));
  }
}

// Export tool instances
export const searchGoogleTool = new (class extends EnhancedSearchTool {
  name = 'chrome_search_google';

  async execute(args: any) {
    return await this.chromeSearchGoogle(args);
  }
})();

export const submitFormTool = new (class extends EnhancedSearchTool {
  name = 'chrome_submit_form';

  async execute(args: any) {
    return await this.chromeSubmitForm(args);
  }
})();