@clduab11/gemini-flow/src/integrations/mariner/web-agent-coordinator.ts

Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.

/**
 * Web Agent Coordinator
 *
 * Intelligent coordination for cross-site navigation, workflow execution,
 * and adaptive browser automation patterns
 */

import { EventEmitter } from "events";
import { Logger } from "../../utils/logger.js";
import { PerformanceMonitor } from "../../core/performance-monitor.js";

import {
  WebAgentCoordinator as IWebAgentCoordinator,
  SiteNavigation,
  NavigationResult,
  WebWorkflow,
  WorkflowResult,
  MultiSiteAction,
  MultiSiteResult,
  NavigationPattern,
  OptimizationResult,
  SiteStructure,
  BrowserConfig,
  NavigationStrategy,
  NavigationCheckpoint,
  WorkflowStep,
  SiteConfig,
  IntegrationBaseError,
} from "./types.js";

import { BaseIntegration, HealthStatus } from "../shared/types.js";
import { BrowserOrchestrator } from "./browser-orchestrator.js";

export class WebAgentCoordinator
  extends BaseIntegration
  implements IWebAgentCoordinator
{
  private orchestrator: BrowserOrchestrator;
  private siteCache: Map<string, SiteStructure> = new Map();
  private navigationPatterns: Map<string, NavigationPattern> = new Map();
  private workflowCache: Map<string, WebWorkflow> = new Map();

  // Performance metrics
  private coordinatorMetrics = {
    navigationsCompleted: 0,
    workflowsExecuted: 0,
    multiSiteOperations: 0,
    sitesLearned: 0,
    optimizationsApplied: 0,
    avgNavigationTime: 0,
    successRate: 0,
  };

  constructor(config: BrowserConfig, orchestrator: BrowserOrchestrator) {
    super(config);
    this.orchestrator = orchestrator;
    this.logger = new Logger("WebAgentCoordinator");
  }

  async initialize(): Promise<void> {
    try {
      this.status = "initializing";
      this.logger.info("Initializing Web Agent Coordinator");

      // Ensure orchestrator is ready
      if (!this.orchestrator.isReady()) {
        await this.orchestrator.initialize();
      }

      // Load cached patterns and structures
      await this.loadCachedData();

      this.status = "ready";
      this.logger.info("Web Agent Coordinator initialized successfully");
      this.emit("initialized", { timestamp: new Date() });
    } catch (error) {
      this.status = "error";
      const coordinatorError = new IntegrationBaseError(
        `Failed to initialize Web Agent Coordinator: ${error.message}`,
        "INIT_FAILED",
        "WebAgentCoordinator",
        "critical",
        false,
        { originalError: error.message },
      );

      this.emitError(coordinatorError);
      throw coordinatorError;
    }
  }

  async shutdown(): Promise<void> {
    try {
      this.logger.info("Shutting down Web Agent Coordinator");
      this.status = "shutdown";

      // Save patterns and structures
      await this.saveCachedData();

      this.logger.info("Web Agent Coordinator shutdown complete");
      this.emit("shutdown", { timestamp: new Date() });
    } catch (error) {
      this.logger.error("Error during Web Agent Coordinator shutdown", error);
      throw error;
    }
  }

  async healthCheck(): Promise<HealthStatus> {
    try {
      // Check orchestrator health
      const orchestratorHealth = await this.orchestrator.healthCheck();
      if (orchestratorHealth === "critical") {
        return "critical";
      }

      // Check if we can perform a simple navigation
      const testResult = await this.navigateSite({
        url: "about:blank",
        strategy: "direct",
        checkpoints: [],
        fallbackOptions: [],
        maxRetries: 1,
        timeout: 5000,
      });

      if (!testResult.success) {
        return "warning";
      }

      return orchestratorHealth;
    } catch (error) {
      this.logger.error("Health check failed", error);
      return "critical";
    }
  }

  getMetrics(): Record<string, number> {
    return {
      ...this.coordinatorMetrics,
      cachedSites: this.siteCache.size,
      knownPatterns: this.navigationPatterns.size,
      workflowTemplates: this.workflowCache.size,
    };
  }

  // === NAVIGATION METHODS ===

  async navigateSite(navigation: SiteNavigation): Promise<NavigationResult> {
    const startTime = performance.now();

    try {
      this.logger.info("Starting site navigation", {
        url: navigation.url,
        strategy: navigation.strategy,
        checkpoints: navigation.checkpoints.length,
      });

      // Get or create tab for navigation
      const tab = await this.orchestrator.createTab({ url: "about:blank" });

      let result: NavigationResult;

      // Execute navigation based on strategy
      switch (navigation.strategy) {
        case "direct":
          result = await this.executeDirectNavigation(tab, navigation);
          break;
        case "progressive":
          result = await this.executeProgressiveNavigation(tab, navigation);
          break;
        case "intelligent":
          result = await this.executeIntelligentNavigation(tab, navigation);
          break;
        case "adaptive":
          result = await this.executeAdaptiveNavigation(tab, navigation);
          break;
        default:
          throw new Error(
            `Unknown navigation strategy: ${navigation.strategy}`,
          );
      }

      this.coordinatorMetrics.navigationsCompleted++;
      this.coordinatorMetrics.avgNavigationTime =
        (this.coordinatorMetrics.avgNavigationTime + result.duration) / 2;

      this.logger.info("Site navigation completed", {
        url: navigation.url,
        success: result.success,
        duration: result.duration,
        checkpointsPassed: result.checkpointsPassed,
      });

      this.emit("navigation_completed", {
        navigation,
        result,
        timestamp: new Date(),
      });
      return result;
    } catch (error) {
      const duration = performance.now() - startTime;
      const navigationError = new IntegrationBaseError(
        `Site navigation failed: ${error.message}`,
        "NAVIGATION_FAILED",
        "WebAgentCoordinator",
        "medium",
        true,
        { url: navigation.url, strategy: navigation.strategy },
      );

      this.emitError(navigationError);

      return {
        success: false,
        url: navigation.url,
        duration,
        checkpointsPassed: 0,
        errors: [error.message],
        metadata: { strategy: navigation.strategy, failed: true },
      };
    }
  }

  async executeWorkflow(workflow: WebWorkflow): Promise<WorkflowResult> {
    const startTime = performance.now();

    try {
      this.logger.info("Executing web workflow", {
        workflowId: workflow.id,
        name: workflow.name,
        steps: workflow.steps.length,
      });

      const results = new Map<string, any>();
      let stepsCompleted = 0;
      const errors: string[] = [];

      // Execute workflow based on coordination strategy
      switch (workflow.coordination.strategy) {
        case "sequential":
          await this.executeSequentialWorkflow(workflow, results, errors);
          break;
        case "parallel":
          await this.executeParallelWorkflow(workflow, results, errors);
          break;
        case "hybrid":
          await this.executeHybridWorkflow(workflow, results, errors);
          break;
        default:
          throw new Error(
            `Unknown workflow strategy: ${workflow.coordination.strategy}`,
          );
      }

      stepsCompleted = results.size;
      const duration = performance.now() - startTime;
      const success = errors.length === 0;

      // Validate workflow results
      if (workflow.validation.finalValidation) {
        const validationPassed = workflow.validation.finalValidation(
          Object.fromEntries(results),
        );
        if (!validationPassed) {
          errors.push("Final validation failed");
        }
      }

      this.coordinatorMetrics.workflowsExecuted++;
      this.coordinatorMetrics.successRate =
        (this.coordinatorMetrics.successRate + (success ? 1 : 0)) / 2;

      const result: WorkflowResult = {
        success: success && errors.length === 0,
        results,
        duration,
        stepsCompleted,
        errors,
        metadata: {
          workflowId: workflow.id,
          strategy: workflow.coordination.strategy,
          validation: workflow.validation.finalValidation
            ? "enabled"
            : "disabled",
        },
      };

      this.logger.info("Workflow execution completed", {
        workflowId: workflow.id,
        success: result.success,
        duration: result.duration,
        stepsCompleted: result.stepsCompleted,
        errors: result.errors.length,
      });

      this.emit("workflow_completed", {
        workflow,
        result,
        timestamp: new Date(),
      });
      return result;
    } catch (error) {
      const duration = performance.now() - startTime;
      const workflowError = new IntegrationBaseError(
        `Workflow execution failed: ${error.message}`,
        "WORKFLOW_FAILED",
        "WebAgentCoordinator",
        "high",
        true,
        { workflowId: workflow.id, workflowName: workflow.name },
      );

      this.emitError(workflowError);

      return {
        success: false,
        results: new Map(),
        duration,
        stepsCompleted: 0,
        errors: [error.message],
        metadata: { workflowId: workflow.id, failed: true },
      };
    }
  }

  async coordiateMultiSite(
    sites: string[],
    action: MultiSiteAction,
  ): Promise<MultiSiteResult> {
    const startTime = performance.now();

    try {
      this.logger.info("Coordinating multi-site action", {
        actionId: action.id,
        sites: sites.length,
        strategy: action.coordination.strategy,
      });

      const siteResults = new Map<string, any>();

      // Execute based on coordination strategy
      switch (action.coordination.strategy) {
        case "parallel":
          await this.executeParallelMultiSite(action, siteResults);
          break;
        case "sequential":
          await this.executeSequentialMultiSite(action, siteResults);
          break;
        case "adaptive":
          await this.executeAdaptiveMultiSite(action, siteResults);
          break;
        default:
          throw new Error(
            `Unknown multi-site strategy: ${action.coordination.strategy}`,
          );
      }

      // Aggregate results
      const aggregatedResult = action.aggregation.reducer(siteResults);

      // Validate aggregated result
      let validationPassed = true;
      if (action.aggregation.validation) {
        validationPassed = action.aggregation.validation(aggregatedResult);
      }

      this.coordinatorMetrics.multiSiteOperations++;
      const duration = performance.now() - startTime;

      const result: MultiSiteResult = {
        success: validationPassed,
        siteResults,
        aggregatedResult,
        duration,
        metadata: {
          actionId: action.id,
          strategy: action.coordination.strategy,
          sitesProcessed: siteResults.size,
          validationPassed,
        },
      };

      this.logger.info("Multi-site coordination completed", {
        actionId: action.id,
        success: result.success,
        duration: result.duration,
        sitesProcessed: result.siteResults.size,
      });

      this.emit("multisite_completed", {
        action,
        result,
        timestamp: new Date(),
      });
      return result;
    } catch (error) {
      const duration = performance.now() - startTime;
      const multiSiteError = new IntegrationBaseError(
        `Multi-site coordination failed: ${error.message}`,
        "MULTISITE_FAILED",
        "WebAgentCoordinator",
        "high",
        true,
        { actionId: action.id, sitesCount: sites.length },
      );

      this.emitError(multiSiteError);

      return {
        success: false,
        siteResults: new Map(),
        aggregatedResult: null,
        duration,
        metadata: { actionId: action.id, failed: true },
      };
    }
  }

  async optimizeNavigation(
    pattern: NavigationPattern,
  ): Promise<OptimizationResult> {
    try {
      this.logger.info("Optimizing navigation pattern", {
        sites: pattern.sites.length,
        commonPaths: pattern.commonPaths.length,
      });

      const improvements: string[] = [];
      const performanceGains: Record<string, number> = {};
      const recommendations: string[] = [];
      const implementationPlan: string[] = [];

      // Analyze current performance
      const currentPerformance = pattern.performance;

      // Optimization 1: Preload resources
      if (!pattern.optimization.preloadResources.length) {
        improvements.push("Enable resource preloading");
        performanceGains["preloading"] = 0.2; // 20% improvement
        recommendations.push("Preload critical CSS, JS, and fonts");
        implementationPlan.push(
          'Add <link rel="preload"> tags for critical resources',
        );
      }

      // Optimization 2: Enable caching
      if (pattern.optimization.cacheStrategy === "none") {
        improvements.push("Implement aggressive caching");
        performanceGains["caching"] = 0.3; // 30% improvement
        recommendations.push("Use service workers for offline caching");
        implementationPlan.push(
          "Implement cache-first strategy for static assets",
        );
      }

      // Optimization 3: Enable compression
      if (!pattern.optimization.compressionEnabled) {
        improvements.push("Enable content compression");
        performanceGains["compression"] = 0.15; // 15% improvement
        recommendations.push("Enable Brotli/Gzip compression");
        implementationPlan.push("Configure server-side compression");
      }

      // Optimization 4: Minification
      if (!pattern.optimization.minification) {
        improvements.push("Minify assets");
        performanceGains["minification"] = 0.1; // 10% improvement
        recommendations.push("Minify CSS, JS, and HTML");
        implementationPlan.push("Add build step for asset minification");
      }

      // Update navigation pattern cache
      pattern.optimization = {
        preloadResources:
          pattern.optimization.preloadResources.length > 0
            ? pattern.optimization.preloadResources
            : ["style.css", "app.js", "fonts.woff2"],
        cacheStrategy:
          pattern.optimization.cacheStrategy !== "none"
            ? pattern.optimization.cacheStrategy
            : "cache-first",
        compressionEnabled: true,
        minification: true,
      };

      this.navigationPatterns.set(pattern.sites.join(","), pattern);
      this.coordinatorMetrics.optimizationsApplied++;

      const result: OptimizationResult = {
        improvements,
        performanceGains,
        recommendations,
        implementationPlan,
      };

      this.logger.info("Navigation optimization completed", {
        improvements: improvements.length,
        expectedGain: Object.values(performanceGains).reduce(
          (a, b) => a + b,
          0,
        ),
      });

      this.emit("optimization_completed", {
        pattern,
        result,
        timestamp: new Date(),
      });
      return result;
    } catch (error) {
      const optimizationError = new IntegrationBaseError(
        `Navigation optimization failed: ${error.message}`,
        "OPTIMIZATION_FAILED",
        "WebAgentCoordinator",
        "low",
        true,
        { sitesCount: pattern.sites.length },
      );

      this.emitError(optimizationError);
      throw optimizationError;
    }
  }

  async learnSiteStructure(url: string): Promise<SiteStructure> {
    try {
      this.logger.info("Learning site structure", { url });

      // Check cache first
      if (this.siteCache.has(url)) {
        const cached = this.siteCache.get(url)!;
        if (
          Date.now() - cached.metadata.lastScanned.getTime() <
          24 * 60 * 60 * 1000
        ) {
          this.logger.debug("Using cached site structure", { url });
          return cached;
        }
      }

      // Create tab for analysis
      const tab = await this.orchestrator.createTab({ url });
      const page = tab.page;

      // Analyze site structure
      const structure = await this.analyzeSiteStructure(page, url);

      // Cache the learned structure
      this.siteCache.set(url, structure);
      this.coordinatorMetrics.sitesLearned++;

      // Close analysis tab
      await this.orchestrator.closeTab(tab.id);

      this.logger.info("Site structure learned successfully", {
        url,
        elements: structure.structure.selectors.length,
        forms: structure.forms.length,
        apis: structure.apis.length,
      });

      this.emit("site_learned", { url, structure, timestamp: new Date() });
      return structure;
    } catch (error) {
      const learningError = new IntegrationBaseError(
        `Site learning failed: ${error.message}`,
        "SITE_LEARNING_FAILED",
        "WebAgentCoordinator",
        "medium",
        true,
        { url },
      );

      this.emitError(learningError);
      throw learningError;
    }
  }

  // === PRIVATE HELPER METHODS ===

  private async executeDirectNavigation(
    tab: any,
    navigation: SiteNavigation,
  ): Promise<NavigationResult> {
    const startTime = performance.now();
    const errors: string[] = [];
    let checkpointsPassed = 0;

    try {
      // Direct navigation to URL
      await tab.page.goto(navigation.url, {
        waitUntil: "domcontentloaded",
        timeout: navigation.timeout,
      });

      // Execute checkpoints
      for (const checkpoint of navigation.checkpoints) {
        try {
          await this.executeCheckpoint(tab.page, checkpoint);
          checkpointsPassed++;
        } catch (error) {
          if (checkpoint.required) {
            throw error;
          }
          errors.push(`Optional checkpoint failed: ${checkpoint.selector}`);
        }
      }

      return {
        success: true,
        url: navigation.url,
        duration: performance.now() - startTime,
        checkpointsPassed,
        errors,
        metadata: {
          strategy: "direct",
          checkpoints: navigation.checkpoints.length,
        },
      };
    } catch (error) {
      // Try fallback options
      for (const fallbackUrl of navigation.fallbackOptions) {
        try {
          await tab.page.goto(fallbackUrl, {
            waitUntil: "domcontentloaded",
            timeout: navigation.timeout,
          });

          return {
            success: true,
            url: fallbackUrl,
            duration: performance.now() - startTime,
            checkpointsPassed,
            errors: [
              ...errors,
              `Primary URL failed, used fallback: ${fallbackUrl}`,
            ],
            metadata: { strategy: "direct", fallback: true },
          };
        } catch (fallbackError) {
          errors.push(
            `Fallback failed: ${fallbackUrl} - ${fallbackError.message}`,
          );
        }
      }

      throw new Error(`Direct navigation failed: ${error.message}`);
    }
  }

  private async executeProgressiveNavigation(
    tab: any,
    navigation: SiteNavigation,
  ): Promise<NavigationResult> {
    const startTime = performance.now();
    const errors: string[] = [];
    let checkpointsPassed = 0;

    try {
      // Progressive navigation with incremental loading
      await tab.page.goto(navigation.url, {
        waitUntil: "networkidle0",
        timeout: navigation.timeout,
      });

      // Wait for progressive enhancements
      await new Promise((resolve) => setTimeout(resolve, 1000));

      // Execute checkpoints progressively
      for (const checkpoint of navigation.checkpoints) {
        try {
          await this.executeCheckpoint(tab.page, checkpoint);
          checkpointsPassed++;

          // Allow time for progressive loading
          await new Promise((resolve) => setTimeout(resolve, 500));
        } catch (error) {
          if (checkpoint.required) {
            throw error;
          }
          errors.push(`Progressive checkpoint failed: ${checkpoint.selector}`);
        }
      }

      return {
        success: true,
        url: navigation.url,
        duration: performance.now() - startTime,
        checkpointsPassed,
        errors,
        metadata: { strategy: "progressive", progressive: true },
      };
    } catch (error) {
      throw new Error(`Progressive navigation failed: ${error.message}`);
    }
  }

  private async executeIntelligentNavigation(
    tab: any,
    navigation: SiteNavigation,
  ): Promise<NavigationResult> {
    const startTime = performance.now();
    const errors: string[] = [];
    let checkpointsPassed = 0;

    try {
      // Use learned site structure for intelligent navigation
      const siteStructure = this.siteCache.get(navigation.url);

      if (siteStructure) {
        // Use known patterns for faster navigation
        await this.navigateUsingStructure(
          tab.page,
          navigation.url,
          siteStructure,
        );
      } else {
        // Learn structure on the fly
        await tab.page.goto(navigation.url, {
          waitUntil: "domcontentloaded",
          timeout: navigation.timeout,
        });
      }

      // Intelligent checkpoint execution with adaptive selectors
      for (const checkpoint of navigation.checkpoints) {
        try {
          await this.executeIntelligentCheckpoint(
            tab.page,
            checkpoint,
            siteStructure,
          );
          checkpointsPassed++;
        } catch (error) {
          if (checkpoint.required) {
            throw error;
          }
          errors.push(`Intelligent checkpoint failed: ${checkpoint.selector}`);
        }
      }

      return {
        success: true,
        url: navigation.url,
        duration: performance.now() - startTime,
        checkpointsPassed,
        errors,
        metadata: { strategy: "intelligent", useStructure: !!siteStructure },
      };
    } catch (error) {
      throw new Error(`Intelligent navigation failed: ${error.message}`);
    }
  }

  private async executeAdaptiveNavigation(
    tab: any,
    navigation: SiteNavigation,
  ): Promise<NavigationResult> {
    const startTime = performance.now();
    const errors: string[] = [];
    let checkpointsPassed = 0;

    try {
      // Adaptive navigation that changes strategy based on conditions
      let currentStrategy: NavigationStrategy = "direct";

      // Analyze network conditions
      const connection = await tab.page.evaluate(
        () => (navigator as any).connection?.effectiveType || "unknown",
      );

      // Adapt strategy based on connection
      if (connection === "slow-2g" || connection === "2g") {
        currentStrategy = "progressive";
      } else if (this.siteCache.has(navigation.url)) {
        currentStrategy = "intelligent";
      }

      // Execute adapted navigation
      const adaptedNavigation = { ...navigation, strategy: currentStrategy };

      switch (currentStrategy) {
        case "progressive":
          return await this.executeProgressiveNavigation(
            tab,
            adaptedNavigation,
          );
        case "intelligent":
          return await this.executeIntelligentNavigation(
            tab,
            adaptedNavigation,
          );
        default:
          return await this.executeDirectNavigation(tab, adaptedNavigation);
      }
    } catch (error) {
      throw new Error(`Adaptive navigation failed: ${error.message}`);
    }
  }

  private async executeCheckpoint(
    page: any,
    checkpoint: NavigationCheckpoint,
  ): Promise<void> {
    switch (checkpoint.action) {
      case "wait":
        await page.waitForSelector(checkpoint.selector, {
          timeout: checkpoint.timeout,
        });
        break;

      case "click":
        await page.click(checkpoint.selector);
        break;

      case "verify":
        const element = await page.$(checkpoint.selector);
        if (!element) {
          throw new Error(
            `Verification failed: ${checkpoint.selector} not found`,
          );
        }
        break;

      case "extract":
        const content = await page.$eval(
          checkpoint.selector,
          (el) => el.textContent,
        );
        if (!content) {
          throw new Error(
            `Extraction failed: ${checkpoint.selector} has no content`,
          );
        }
        break;

      default:
        throw new Error(`Unknown checkpoint action: ${checkpoint.action}`);
    }
  }

  private async executeIntelligentCheckpoint(
    page: any,
    checkpoint: NavigationCheckpoint,
    structure?: SiteStructure,
  ): Promise<void> {
    // Try primary selector first
    try {
      await this.executeCheckpoint(page, checkpoint);
      return;
    } catch (error) {
      // Use fallback or learned selectors
      if (checkpoint.fallback) {
        const fallbackCheckpoint = {
          ...checkpoint,
          selector: checkpoint.fallback,
        };
        await this.executeCheckpoint(page, fallbackCheckpoint);
      } else {
        throw error;
      }
    }
  }

  private async navigateUsingStructure(
    page: any,
    url: string,
    structure: SiteStructure,
  ): Promise<void> {
    // Use learned patterns for optimized navigation
    await page.goto(url, {
      waitUntil: "domcontentloaded",
      timeout: 30000,
    });

    // Wait for known dynamic elements
    for (const dynamicElement of structure.structure.dynamicElements) {
      try {
        await page.waitForSelector(dynamicElement.selector, {
          timeout: dynamicElement.timeout,
        });
      } catch (error) {
        // Continue if non-critical
      }
    }
  }

  private async executeSequentialWorkflow(
    workflow: WebWorkflow,
    results: Map<string, any>,
    errors: string[],
  ): Promise<void> {
    for (const step of workflow.steps) {
      try {
        const result = await this.executeWorkflowStep(step);
        results.set(step.id, result);
      } catch (error) {
        errors.push(`Step ${step.id} failed: ${error.message}`);

        if (step.retryPolicy.maxAttempts > 1) {
          // Implement retry logic
          for (
            let attempt = 1;
            attempt < step.retryPolicy.maxAttempts;
            attempt++
          ) {
            try {
              await new Promise((resolve) =>
                setTimeout(resolve, step.retryPolicy.backoffMs * attempt),
              );
              const result = await this.executeWorkflowStep(step);
              results.set(step.id, result);
              break;
            } catch (retryError) {
              if (attempt === step.retryPolicy.maxAttempts - 1) {
                errors.push(
                  `Step ${step.id} failed after ${attempt + 1} attempts`,
                );
              }
            }
          }
        }
      }
    }
  }

  private async executeParallelWorkflow(
    workflow: WebWorkflow,
    results: Map<string, any>,
    errors: string[],
  ): Promise<void> {
    const stepPromises = workflow.steps.map(async (step) => {
      try {
        const result = await this.executeWorkflowStep(step);
        results.set(step.id, result);
      } catch (error) {
        errors.push(`Step ${step.id} failed: ${error.message}`);
      }
    });

    await Promise.all(stepPromises);
  }

  private async executeHybridWorkflow(
    workflow: WebWorkflow,
    results: Map<string, any>,
    errors: string[],
  ): Promise<void> {
    // Group steps by dependencies
    const independentSteps = workflow.steps.filter(
      (step) => step.dependencies.length === 0,
    );
    const dependentSteps = workflow.steps.filter(
      (step) => step.dependencies.length > 0,
    );

    // Execute independent steps in parallel
    await this.executeParallelWorkflow(
      { ...workflow, steps: independentSteps },
      results,
      errors,
    );

    // Execute dependent steps sequentially
    await this.executeSequentialWorkflow(
      { ...workflow, steps: dependentSteps },
      results,
      errors,
    );
  }

  private async executeWorkflowStep(step: WorkflowStep): Promise<any> {
    // Simple step execution - would be expanded based on step types
    switch (step.type) {
      case "action":
        return await this.executeStepAction(step);
      case "decision":
        return await this.executeStepDecision(step);
      case "loop":
        return await this.executeStepLoop(step);
      case "parallel":
        return await this.executeStepParallel(step);
      case "sync":
        return await this.executeStepSync(step);
      default:
        throw new Error(`Unknown step type: ${step.type}`);
    }
  }

  private async executeStepAction(step: WorkflowStep): Promise<any> {
    // Execute action step
    return { type: "action", stepId: step.id, result: "completed" };
  }

  private async executeStepDecision(step: WorkflowStep): Promise<any> {
    // Execute decision step
    return { type: "decision", stepId: step.id, result: "decided" };
  }

  private async executeStepLoop(step: WorkflowStep): Promise<any> {
    // Execute loop step
    return { type: "loop", stepId: step.id, result: "looped" };
  }

  private async executeStepParallel(step: WorkflowStep): Promise<any> {
    // Execute parallel step
    return { type: "parallel", stepId: step.id, result: "parallelized" };
  }

  private async executeStepSync(step: WorkflowStep): Promise<any> {
    // Execute sync step
    return { type: "sync", stepId: step.id, result: "synchronized" };
  }

  private async executeParallelMultiSite(
    action: MultiSiteAction,
    results: Map<string, any>,
  ): Promise<void> {
    const sitePromises = action.sites.map(async (siteConfig) => {
      try {
        const tab = await this.orchestrator.createTab(siteConfig.config);
        const workflowResult = await this.executeWorkflow(siteConfig.workflow);
        results.set(siteConfig.name, workflowResult);
        await this.orchestrator.closeTab(tab.id);
      } catch (error) {
        results.set(siteConfig.name, { error: error.message });
      }
    });

    await Promise.all(sitePromises);
  }

  private async executeSequentialMultiSite(
    action: MultiSiteAction,
    results: Map<string, any>,
  ): Promise<void> {
    for (const siteConfig of action.sites) {
      try {
        const tab = await this.orchestrator.createTab(siteConfig.config);
        const workflowResult = await this.executeWorkflow(siteConfig.workflow);
        results.set(siteConfig.name, workflowResult);
        await this.orchestrator.closeTab(tab.id);
      } catch (error) {
        results.set(siteConfig.name, { error: error.message });
      }
    }
  }

  private async executeAdaptiveMultiSite(
    action: MultiSiteAction,
    results: Map<string, any>,
  ): Promise<void> {
    // Adaptive execution based on site priority and available resources
    const sortedSites = action.sites.sort((a, b) => b.priority - a.priority);

    // Execute high-priority sites first
    const highPrioritySites = sortedSites.filter((site) => site.priority > 7);
    const normalPrioritySites = sortedSites.filter(
      (site) => site.priority <= 7,
    );

    // Execute high-priority sequentially
    for (const siteConfig of highPrioritySites) {
      try {
        const tab = await this.orchestrator.createTab(siteConfig.config);
        const workflowResult = await this.executeWorkflow(siteConfig.workflow);
        results.set(siteConfig.name, workflowResult);
        await this.orchestrator.closeTab(tab.id);
      } catch (error) {
        results.set(siteConfig.name, { error: error.message });
      }
    }

    // Execute normal priority in parallel
    const normalPromises = normalPrioritySites.map(async (siteConfig) => {
      try {
        const tab = await this.orchestrator.createTab(siteConfig.config);
        const workflowResult = await this.executeWorkflow(siteConfig.workflow);
        results.set(siteConfig.name, workflowResult);
        await this.orchestrator.closeTab(tab.id);
      } catch (error) {
        results.set(siteConfig.name, { error: error.message });
      }
    });

    await Promise.all(normalPromises);
  }

  private async analyzeSiteStructure(
    page: any,
    url: string,
  ): Promise<SiteStructure> {
    // Comprehensive site structure analysis
    const analysis = await page.evaluate(() => {
      const structure = {
        selectors: [],
        hierarchy: { root: null, depth: 0, landmarks: [] },
        dynamicElements: [],
        loadingPatterns: [],
      };

      // Analyze DOM structure
      const allElements = document.querySelectorAll("*");
      allElements.forEach((el, index) => {
        if (index < 100) {
          // Limit analysis
          structure.selectors.push({
            type: el.tagName.toLowerCase(),
            selector: `${el.tagName.toLowerCase()}:nth-child(${Array.from(el.parentNode?.children || []).indexOf(el) + 1})`,
            confidence: 0.8,
            fallbacks: [el.className ? `.${el.className.split(" ")[0]}` : ""],
            context: el.parentNode?.tagName.toLowerCase() || "",
          });
        }
      });

      return structure;
    });

    // Build complete site structure
    const siteStructure: SiteStructure = {
      url,
      title: await page.title(),
      structure: analysis,
      navigation: {
        primaryNav: [],
        secondaryNav: [],
        breadcrumbs: [],
        pagination: {
          present: false,
          selector: "",
          currentPage: 1,
          totalPages: 1,
        },
        searchForms: [],
      },
      forms: [],
      apis: [],
      patterns: [],
      metadata: {
        lastScanned: new Date(),
        version: "1.0",
        technologies: [],
        performance: {
          loadTime: 0,
          firstContentfulPaint: 0,
          largestContentfulPaint: 0,
          cumulativeLayoutShift: 0,
          firstInputDelay: 0,
        },
        accessibility: {
          hasAriaLabels: false,
          keyboardNavigable: false,
          screenReaderFriendly: false,
          contrastRatio: 0,
          violations: [],
        },
      },
    };

    return siteStructure;
  }

  private async loadCachedData(): Promise<void> {
    // Load cached patterns and structures from storage
    // This would typically load from a persistent cache
    this.logger.debug("Loading cached navigation data");
  }

  private async saveCachedData(): Promise<void> {
    // Save patterns and structures to persistent storage
    this.logger.debug("Saving navigation data to cache");
  }
}