All files / src/services ToolAvailability.ts

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import { ConnectionManager } from "./ConnectionManager";
import { GitLabTier } from "./GitLabVersionDetector";
import { logger } from "../logger";
 
interface ToolRequirement {
  minVersion: number;
  requiredTier: "free" | "premium" | "ultimate";
  notes?: string;
}
 
export class ToolAvailability {
  // Comprehensive tool requirements based on GitLab documentation
  private static toolRequirements: Record<string, ToolRequirement> = {
    // Core Tools - Available in Free Tier
    list_projects: { minVersion: 8.0, requiredTier: "free" },
    get_project: { minVersion: 8.0, requiredTier: "free" },
    create_project: { minVersion: 8.0, requiredTier: "free" },
    update_project: { minVersion: 8.0, requiredTier: "free" },
    delete_project: { minVersion: 8.0, requiredTier: "free" },
    fork_project: { minVersion: 8.0, requiredTier: "free" },
    archive_project: { minVersion: 8.0, requiredTier: "free" },
    unarchive_project: { minVersion: 8.0, requiredTier: "free" },
 
    // Branches - Available in Free Tier
    list_branches: { minVersion: 8.0, requiredTier: "free" },
    get_branch: { minVersion: 8.0, requiredTier: "free" },
    create_branch: { minVersion: 8.0, requiredTier: "free" },
    delete_branch: { minVersion: 8.0, requiredTier: "free" },
    protect_branch: { minVersion: 8.0, requiredTier: "free" },
    unprotect_branch: { minVersion: 8.0, requiredTier: "free" },
 
    // Commits - Available in Free Tier
    list_commits: { minVersion: 8.0, requiredTier: "free" },
    get_commit: { minVersion: 8.0, requiredTier: "free" },
    get_commit_diff: { minVersion: 8.0, requiredTier: "free" },
    get_branch_diffs: { minVersion: 8.0, requiredTier: "free" },
    cherry_pick_commit: { minVersion: 8.15, requiredTier: "free" },
    revert_commit: { minVersion: 8.15, requiredTier: "free" },
 
    // Files - Available in Free Tier
    get_file_contents: { minVersion: 8.0, requiredTier: "free" },
    create_or_update_file: { minVersion: 8.0, requiredTier: "free" },
    delete_file: { minVersion: 8.0, requiredTier: "free" },
    get_raw_file: { minVersion: 8.0, requiredTier: "free" },
    get_file_blame: { minVersion: 8.0, requiredTier: "free" },
    get_repository_tree: { minVersion: 8.0, requiredTier: "free" },
 
    // Search - Available in Free Tier
    search_repositories: { minVersion: 8.0, requiredTier: "free" },
 
    // Namespaces - Available in Free Tier
    list_namespaces: { minVersion: 9.0, requiredTier: "free" },
    get_namespace: { minVersion: 9.0, requiredTier: "free" },
 
    // Wiki - Available in Free Tier
    upload_markdown: { minVersion: 8.0, requiredTier: "free" },
 
    // Merge Requests - Basic features in Free Tier
    list_merge_requests: { minVersion: 8.0, requiredTier: "free" },
    get_merge_request: { minVersion: 8.0, requiredTier: "free" },
    create_merge_request: { minVersion: 8.0, requiredTier: "free" },
    update_merge_request: { minVersion: 8.0, requiredTier: "free" },
    delete_merge_request: { minVersion: 8.0, requiredTier: "free" },
    merge_merge_request: { minVersion: 8.0, requiredTier: "free" },
    rebase_merge_request: { minVersion: 11.6, requiredTier: "free" },
    get_merge_request_diffs: { minVersion: 8.0, requiredTier: "free" },
    list_merge_request_diffs: { minVersion: 8.0, requiredTier: "free" },
    mr_discussions: { minVersion: 8.0, requiredTier: "free" },
 
    // Draft Notes - Available in Free Tier
    get_draft_note: { minVersion: 13.2, requiredTier: "free" },
    list_draft_notes: { minVersion: 13.2, requiredTier: "free" },
    create_draft_note: { minVersion: 13.2, requiredTier: "free" },
    update_draft_note: { minVersion: 13.2, requiredTier: "free" },
    delete_draft_note: { minVersion: 13.2, requiredTier: "free" },
    publish_draft_note: { minVersion: 13.2, requiredTier: "free" },
    bulk_publish_draft_notes: { minVersion: 13.2, requiredTier: "free" },
 
    // Additional MR tools
    cancel_merge_when_pipeline_succeeds: { minVersion: 9.0, requiredTier: "free" },
    list_merge_request_commits: { minVersion: 8.0, requiredTier: "free" },
    list_merge_request_notes: { minVersion: 8.0, requiredTier: "free" },
    create_merge_request_note: { minVersion: 8.0, requiredTier: "free" },
    update_merge_request_note: { minVersion: 8.0, requiredTier: "free" },
    delete_merge_request_note: { minVersion: 8.0, requiredTier: "free" },
 
    // Merge Request Approvals - Premium/Ultimate only
    get_merge_request_approvals: {
      minVersion: 10.6,
      requiredTier: "premium",
      notes: "MR approval rules",
    },
    approve_merge_request: { minVersion: 10.6, requiredTier: "premium", notes: "MR approvals" },
    unapprove_merge_request: { minVersion: 10.6, requiredTier: "premium", notes: "MR approvals" },
    get_approval_rules: { minVersion: 12.3, requiredTier: "premium", notes: "MR approval rules" },
    create_approval_rule: { minVersion: 12.3, requiredTier: "premium", notes: "MR approval rules" },
    update_approval_rule: { minVersion: 12.3, requiredTier: "premium", notes: "MR approval rules" },
    delete_approval_rule: { minVersion: 12.3, requiredTier: "premium", notes: "MR approval rules" },
 
    // Merge Trains - Premium only
    add_to_merge_train: { minVersion: 12.0, requiredTier: "premium", notes: "Merge trains" },
    remove_from_merge_train: { minVersion: 12.0, requiredTier: "premium", notes: "Merge trains" },
    get_merge_trains: { minVersion: 12.0, requiredTier: "premium", notes: "Merge trains" },
 
    // Labels - Available in Free Tier
    list_labels: { minVersion: 8.0, requiredTier: "free" },
    get_label: { minVersion: 8.0, requiredTier: "free" },
    create_label: { minVersion: 8.0, requiredTier: "free" },
    update_label: { minVersion: 8.0, requiredTier: "free" },
    delete_label: { minVersion: 8.0, requiredTier: "free" },
    promote_label: { minVersion: 12.4, requiredTier: "free" },
 
    // Milestones - Available in Free Tier
    list_milestones: { minVersion: 8.0, requiredTier: "free" },
    get_milestone: { minVersion: 8.0, requiredTier: "free" },
    create_milestone: { minVersion: 8.0, requiredTier: "free" },
    update_milestone: { minVersion: 8.0, requiredTier: "free" },
    delete_milestone: { minVersion: 8.0, requiredTier: "free" },
    promote_milestone: { minVersion: 11.9, requiredTier: "free" },
 
    // Wiki - Available in Free Tier
    list_wiki_pages: { minVersion: 9.0, requiredTier: "free" },
    get_wiki_page: { minVersion: 9.0, requiredTier: "free" },
    create_wiki_page: { minVersion: 9.0, requiredTier: "free" },
    update_wiki_page: { minVersion: 9.0, requiredTier: "free" },
    delete_wiki_page: { minVersion: 9.0, requiredTier: "free" },
 
    // Pipelines & CI/CD - Basic features in Free Tier
    list_pipelines: { minVersion: 9.0, requiredTier: "free" },
    get_pipeline: { minVersion: 9.0, requiredTier: "free" },
    create_pipeline: { minVersion: 9.0, requiredTier: "free" },
    run_pipeline: { minVersion: 9.0, requiredTier: "free" },
    retry_pipeline: { minVersion: 9.0, requiredTier: "free" },
    cancel_pipeline: { minVersion: 9.0, requiredTier: "free" },
    delete_pipeline: { minVersion: 11.6, requiredTier: "free" },
 
    // Pipeline Jobs - Available in Free Tier
    list_pipeline_jobs: { minVersion: 9.0, requiredTier: "free" },
    list_pipeline_trigger_jobs: { minVersion: 12.0, requiredTier: "free", notes: "Bridge jobs" },
    get_pipeline_job: { minVersion: 9.0, requiredTier: "free" },
    get_pipeline_job_output: { minVersion: 9.0, requiredTier: "free", notes: "Job trace/logs" },
    play_pipeline_job: { minVersion: 9.0, requiredTier: "free", notes: "Manual jobs" },
    retry_pipeline_job: { minVersion: 9.0, requiredTier: "free" },
    cancel_pipeline_job: { minVersion: 9.0, requiredTier: "free" },
    get_job: { minVersion: 9.0, requiredTier: "free" },
    get_job_trace: { minVersion: 9.0, requiredTier: "free" },
    get_job_artifacts: { minVersion: 9.0, requiredTier: "free" },
    download_job_artifacts: { minVersion: 9.0, requiredTier: "free" },
    retry_job: { minVersion: 9.0, requiredTier: "free" },
    cancel_job: { minVersion: 9.0, requiredTier: "free" },
    play_job: { minVersion: 9.0, requiredTier: "free" },
    erase_job: { minVersion: 9.0, requiredTier: "free" },
 
    // Advanced CI/CD features - Premium/Ultimate
    list_pipeline_schedules: { minVersion: 9.2, requiredTier: "free" },
    get_pipeline_schedule: { minVersion: 9.2, requiredTier: "free" },
    create_pipeline_schedule: { minVersion: 9.2, requiredTier: "free" },
    update_pipeline_schedule: { minVersion: 9.2, requiredTier: "free" },
    delete_pipeline_schedule: { minVersion: 9.2, requiredTier: "free" },
    play_pipeline_schedule: { minVersion: 12.8, requiredTier: "free" },
    pipeline_test_report: { minVersion: 11.5, requiredTier: "free" },
    pipeline_test_report_summary: { minVersion: 14.0, requiredTier: "free" },
 
    // Protected Environments - Premium only
    list_protected_environments: { minVersion: 12.8, requiredTier: "premium" },
    get_protected_environment: { minVersion: 12.8, requiredTier: "premium" },
    protect_environment: { minVersion: 12.8, requiredTier: "premium" },
    unprotect_environment: { minVersion: 12.8, requiredTier: "premium" },
 
    // Work Items (GraphQL) - Available in Free Tier (15.0+)
    list_work_items: { minVersion: 15.0, requiredTier: "free" },
    get_work_item: { minVersion: 15.0, requiredTier: "free" },
    get_work_item_types: { minVersion: 15.0, requiredTier: "free" },
    create_work_item: { minVersion: 15.0, requiredTier: "free" },
    update_work_item: { minVersion: 15.0, requiredTier: "free" },
    delete_work_item: { minVersion: 15.0, requiredTier: "free" },
 
    // Epics - Premium/Ultimate only
    list_epics: { minVersion: 10.2, requiredTier: "premium", notes: "Epic management" },
    get_epic: { minVersion: 10.2, requiredTier: "premium" },
    create_epic: { minVersion: 10.2, requiredTier: "premium" },
    update_epic: { minVersion: 10.2, requiredTier: "premium" },
    delete_epic: { minVersion: 10.2, requiredTier: "premium" },
    list_epic_issues: { minVersion: 10.2, requiredTier: "premium" },
    assign_epic_issue: { minVersion: 10.2, requiredTier: "premium" },
    remove_epic_issue: { minVersion: 10.2, requiredTier: "premium" },
    list_child_epics: { minVersion: 11.7, requiredTier: "ultimate", notes: "Multi-level epics" },
    create_child_epic: { minVersion: 11.7, requiredTier: "ultimate", notes: "Multi-level epics" },
 
    // Iterations/Sprints - Premium only
    list_iterations: { minVersion: 13.1, requiredTier: "premium", notes: "Sprint management" },
    get_iteration: { minVersion: 13.1, requiredTier: "premium" },
    create_iteration: { minVersion: 13.2, requiredTier: "premium" },
    update_iteration: { minVersion: 13.2, requiredTier: "premium" },
    delete_iteration: { minVersion: 14.0, requiredTier: "premium" },
 
    // Boards - Scoped labels in Premium
    list_boards: { minVersion: 8.13, requiredTier: "free" },
    get_board: { minVersion: 8.13, requiredTier: "free" },
    create_board: { minVersion: 10.4, requiredTier: "free" },
    update_board: { minVersion: 11.0, requiredTier: "free" },
    delete_board: { minVersion: 10.4, requiredTier: "free" },
    list_board_lists: { minVersion: 8.13, requiredTier: "free" },
    get_board_list: { minVersion: 8.13, requiredTier: "free" },
    create_board_list: { minVersion: 8.13, requiredTier: "free" },
    update_board_list: { minVersion: 11.0, requiredTier: "free" },
    delete_board_list: { minVersion: 8.13, requiredTier: "free" },
 
    // Security Features - Ultimate only
    security_dashboard: { minVersion: 11.1, requiredTier: "ultimate", notes: "Security scanning" },
    list_vulnerabilities: {
      minVersion: 12.5,
      requiredTier: "ultimate",
      notes: "Vulnerability management",
    },
    get_vulnerability: { minVersion: 12.5, requiredTier: "ultimate" },
    create_vulnerability: { minVersion: 13.0, requiredTier: "ultimate" },
    resolve_vulnerability: { minVersion: 12.5, requiredTier: "ultimate" },
    dismiss_vulnerability: { minVersion: 12.5, requiredTier: "ultimate" },
    revert_vulnerability_dismissal: { minVersion: 12.5, requiredTier: "ultimate" },
    list_vulnerability_findings: { minVersion: 12.5, requiredTier: "ultimate" },
    create_vulnerability_finding: { minVersion: 13.7, requiredTier: "ultimate" },
 
    // SAST/DAST - Ultimate only
    run_sast_scan: { minVersion: 10.3, requiredTier: "ultimate", notes: "Static security testing" },
    run_dast_scan: {
      minVersion: 10.4,
      requiredTier: "ultimate",
      notes: "Dynamic security testing",
    },
    run_dependency_scan: {
      minVersion: 10.7,
      requiredTier: "ultimate",
      notes: "Dependency scanning",
    },
    run_container_scan: { minVersion: 10.8, requiredTier: "ultimate", notes: "Container scanning" },
    run_secret_detection: { minVersion: 13.1, requiredTier: "ultimate", notes: "Secret detection" },
 
    // Compliance - Ultimate only
    compliance_framework: {
      minVersion: 13.0,
      requiredTier: "ultimate",
      notes: "Compliance management",
    },
    list_compliance_frameworks: { minVersion: 13.0, requiredTier: "ultimate" },
    get_compliance_framework: { minVersion: 13.0, requiredTier: "ultimate" },
    create_compliance_framework: { minVersion: 13.0, requiredTier: "ultimate" },
    update_compliance_framework: { minVersion: 13.0, requiredTier: "ultimate" },
    delete_compliance_framework: { minVersion: 13.0, requiredTier: "ultimate" },
    audit_events: { minVersion: 12.0, requiredTier: "ultimate", notes: "Audit logging" },
    list_audit_events: { minVersion: 12.0, requiredTier: "ultimate" },
 
    // Requirements Management - Ultimate only
    list_requirements: {
      minVersion: 13.1,
      requiredTier: "ultimate",
      notes: "Requirements tracking",
    },
    get_requirement: { minVersion: 13.1, requiredTier: "ultimate" },
    create_requirement: { minVersion: 13.1, requiredTier: "ultimate" },
    update_requirement: { minVersion: 13.1, requiredTier: "ultimate" },
    delete_requirement: { minVersion: 13.1, requiredTier: "ultimate" },
 
    // Test Case Management - Ultimate only
    list_test_cases: { minVersion: 13.6, requiredTier: "ultimate", notes: "Test cases" },
    get_test_case: { minVersion: 13.6, requiredTier: "ultimate" },
    create_test_case: { minVersion: 13.6, requiredTier: "ultimate" },
    update_test_case: { minVersion: 13.6, requiredTier: "ultimate" },
    delete_test_case: { minVersion: 13.6, requiredTier: "ultimate" },
    run_test_case: { minVersion: 13.6, requiredTier: "ultimate" },
 
    // Quality Management - Ultimate only
    quality_management: { minVersion: 13.0, requiredTier: "ultimate", notes: "Quality tracking" },
    list_test_reports: { minVersion: 13.0, requiredTier: "ultimate" },
    get_test_report: { minVersion: 13.0, requiredTier: "ultimate" },
 
    // Analytics - Limited in Premium, full in Ultimate
    value_stream_analytics: {
      minVersion: 12.3,
      requiredTier: "premium",
      notes: "Limited in Premium",
    },
    cycle_analytics: { minVersion: 12.3, requiredTier: "premium" },
    code_review_analytics: { minVersion: 12.7, requiredTier: "premium" },
    productivity_analytics: { minVersion: 12.3, requiredTier: "ultimate" },
    merge_request_analytics: { minVersion: 13.3, requiredTier: "premium" },
    repository_analytics: { minVersion: 13.0, requiredTier: "free" },
    insights: { minVersion: 12.0, requiredTier: "ultimate" },
 
    // Group-level features
    list_group_milestones: { minVersion: 9.0, requiredTier: "free" },
    list_group_members: { minVersion: 8.0, requiredTier: "free" },
    list_group_projects: { minVersion: 8.0, requiredTier: "free" },
    list_group_subgroups: { minVersion: 10.3, requiredTier: "free" },
    list_group_labels: { minVersion: 11.8, requiredTier: "free" },
    list_group_variables: { minVersion: 9.5, requiredTier: "free" },
    list_group_runners: { minVersion: 10.1, requiredTier: "free" },
 
    // Package Registry - Available in Free Tier with limitations
    list_packages: { minVersion: 11.8, requiredTier: "free" },
    get_package: { minVersion: 11.8, requiredTier: "free" },
    publish_package: { minVersion: 11.8, requiredTier: "free" },
    delete_package: { minVersion: 11.8, requiredTier: "free" },
 
    // Container Registry - Available in Free Tier
    list_registry_repositories: { minVersion: 8.8, requiredTier: "free" },
    get_registry_repository: { minVersion: 8.8, requiredTier: "free" },
    delete_registry_repository: { minVersion: 8.8, requiredTier: "free" },
    list_registry_tags: { minVersion: 8.8, requiredTier: "free" },
    get_registry_tag: { minVersion: 8.8, requiredTier: "free" },
    delete_registry_tag: { minVersion: 8.8, requiredTier: "free" },
 
    // Terraform State - Available in Free Tier (13.0+)
    list_terraform_states: { minVersion: 13.0, requiredTier: "free" },
    get_terraform_state: { minVersion: 13.0, requiredTier: "free" },
    lock_terraform_state: { minVersion: 13.0, requiredTier: "free" },
    unlock_terraform_state: { minVersion: 13.0, requiredTier: "free" },
    delete_terraform_state: { minVersion: 13.0, requiredTier: "free" },
 
    // Feature Flags - Premium only
    list_feature_flags: { minVersion: 12.5, requiredTier: "premium" },
    get_feature_flag: { minVersion: 12.5, requiredTier: "premium" },
    create_feature_flag: { minVersion: 12.5, requiredTier: "premium" },
    update_feature_flag: { minVersion: 12.5, requiredTier: "premium" },
    delete_feature_flag: { minVersion: 12.5, requiredTier: "premium" },
 
    // Additional Core tools
    get_users: { minVersion: 8.0, requiredTier: "free" },
    verify_namespace: { minVersion: 9.0, requiredTier: "free" },
    list_project_members: { minVersion: 8.0, requiredTier: "free" },
    list_group_iterations: {
      minVersion: 13.1,
      requiredTier: "premium",
      notes: "Iterations/Sprints",
    },
    download_attachment: { minVersion: 10.0, requiredTier: "free" },
    list_events: { minVersion: 9.0, requiredTier: "free" },
    get_project_events: { minVersion: 9.0, requiredTier: "free" },
    create_repository: { minVersion: 8.0, requiredTier: "free" },
    fork_repository: { minVersion: 8.0, requiredTier: "free" },
 
    // Additional MR tools
    create_note: { minVersion: 8.0, requiredTier: "free" },
    create_merge_request_thread: { minVersion: 11.0, requiredTier: "free" },
 
    // Additional Files tools
    push_files: { minVersion: 13.0, requiredTier: "free", notes: "Multi-file commit API" },
 
    // Additional Milestone tools
    get_milestone_issue: { minVersion: 9.0, requiredTier: "free" },
    get_milestone_merge_requests: { minVersion: 9.0, requiredTier: "free" },
    get_milestone_burndown_events: {
      minVersion: 12.0,
      requiredTier: "premium",
      notes: "Burndown charts",
    },
    edit_milestone: { minVersion: 8.0, requiredTier: "free" },
 
    // CI/CD Variables
    list_variables: { minVersion: 9.0, requiredTier: "free" },
    get_variable: { minVersion: 9.0, requiredTier: "free" },
    create_variable: { minVersion: 9.0, requiredTier: "free" },
    update_variable: { minVersion: 9.0, requiredTier: "free" },
    delete_variable: { minVersion: 9.0, requiredTier: "free" },
 
    // Code Quality - Available in Free Tier
    get_code_quality_report: { minVersion: 11.4, requiredTier: "free" },
 
    // Operations/Monitoring
    list_environments: { minVersion: 8.11, requiredTier: "free" },
    get_environment: { minVersion: 8.11, requiredTier: "free" },
    create_environment: { minVersion: 8.11, requiredTier: "free" },
    update_environment: { minVersion: 8.11, requiredTier: "free" },
    delete_environment: { minVersion: 8.11, requiredTier: "free" },
    stop_environment: { minVersion: 8.11, requiredTier: "free" },
 
    // Deploy Tokens
    list_deploy_tokens: { minVersion: 12.9, requiredTier: "free" },
    get_deploy_token: { minVersion: 12.9, requiredTier: "free" },
    create_deploy_token: { minVersion: 12.9, requiredTier: "free" },
    delete_deploy_token: { minVersion: 12.9, requiredTier: "free" },
    revoke_deploy_token: { minVersion: 12.9, requiredTier: "free" },
 
    // Deployments
    list_deployments: { minVersion: 8.11, requiredTier: "free" },
    get_deployment: { minVersion: 8.11, requiredTier: "free" },
    create_deployment: { minVersion: 12.4, requiredTier: "free" },
    update_deployment: { minVersion: 12.4, requiredTier: "free" },
 
    // Releases
    list_releases: { minVersion: 11.7, requiredTier: "free" },
    get_release: { minVersion: 11.7, requiredTier: "free" },
    create_release: { minVersion: 11.7, requiredTier: "free" },
    update_release: { minVersion: 11.7, requiredTier: "free" },
    delete_release: { minVersion: 11.7, requiredTier: "free" },
 
    // Protected Tags/Branches
    list_protected_branches: { minVersion: 9.5, requiredTier: "free" },
    get_protected_branch: { minVersion: 9.5, requiredTier: "free" },
    protect_repository_branch: { minVersion: 9.5, requiredTier: "free" },
    unprotect_repository_branch: { minVersion: 9.5, requiredTier: "free" },
    list_protected_tags: { minVersion: 11.3, requiredTier: "free" },
    get_protected_tag: { minVersion: 11.3, requiredTier: "free" },
    protect_repository_tag: { minVersion: 11.3, requiredTier: "free" },
    unprotect_repository_tag: { minVersion: 11.3, requiredTier: "free" },
  };
 
  public static isToolAvailable(toolName: string): boolean {
    const connectionManager = ConnectionManager.getInstance();
 
    // Add null check as extra safety
    if (!connectionManager) {
      logger.debug(`Tool availability check for '${toolName}': ConnectionManager instance is null`);
      return false;
    }
 
    try {
      const instanceInfo = connectionManager.getInstanceInfo();
      const requirement = this.toolRequirements[toolName];
 
      if (!requirement) {
        // Unknown tool, check if it exists in the codebase but not in our requirements
        logger.debug(`Tool '${toolName}' not found in requirements database`);
        // Default to allowing it if version is recent enough
        return this.parseVersion(instanceInfo.version) >= 15.0;
      }
 
      // Check version requirement
      const version = this.parseVersion(instanceInfo.version);
      if (version < requirement.minVersion) {
        return false;
      }
 
      // Check tier requirement
      return this.isTierSufficient(instanceInfo.tier, requirement.requiredTier);
    } catch (error) {
      // If connection not initialized, assume tool not available
      const errorMessage = error instanceof Error ? error.message : String(error);
 
      // Use debug level for expected "not initialized" errors, warn for others
      if (errorMessage.includes("Connection not initialized")) {
        logger.debug(`Tool availability check for '${toolName}': ${errorMessage}`);
      } else {
        logger.warn(`Failed to check tool availability for '${toolName}': ${errorMessage}`);
      }
      return false;
    }
  }
 
  public static getAvailableTools(): string[] {
    return Object.keys(this.toolRequirements).filter(tool => this.isToolAvailable(tool));
  }
 
  public static getToolRequirement(toolName: string): ToolRequirement | undefined {
    return this.toolRequirements[toolName];
  }
 
  public static getUnavailableReason(toolName: string): string | null {
    const connectionManager = ConnectionManager.getInstance();
 
    try {
      const instanceInfo = connectionManager.getInstanceInfo();
      const requirement = this.toolRequirements[toolName];
 
      if (!requirement) {
        return `Tool '${toolName}' is not recognized`;
      }
 
      const version = this.parseVersion(instanceInfo.version);
      if (version < requirement.minVersion) {
        return `Requires GitLab ${requirement.minVersion}+, current version is ${instanceInfo.version}`;
      }
 
      if (!this.isTierSufficient(instanceInfo.tier, requirement.requiredTier)) {
        return `Requires GitLab ${requirement.requiredTier} tier or higher, current tier is ${instanceInfo.tier}`;
      }
 
      return null; // Tool is available
    } catch {
      return "GitLab connection not initialized";
    }
  }
 
  private static parseVersion(version: string): number {
    Iif (version === "unknown") return 0;
 
    const match = version.match(/^(\d+)\.(\d+)/);
    Iif (!match) return 0;
 
    const major = parseInt(match[1], 10);
    const minor = parseInt(match[2], 10);
 
    return major + minor / 100; // Use /100 for more precise version comparison
  }
 
  private static isTierSufficient(
    actualTier: GitLabTier,
    requiredTier: "free" | "premium" | "ultimate"
  ): boolean {
    const tierHierarchy: Record<string, number> = {
      free: 0,
      premium: 1,
      ultimate: 2,
    };
 
    const actualLevel = tierHierarchy[actualTier] ?? 0;
    const requiredLevel = tierHierarchy[requiredTier] ?? 0;
 
    return actualLevel >= requiredLevel;
  }
 
  public static filterToolsByAvailability(tools: string[]): string[] {
    return tools.filter(tool => this.isToolAvailable(tool));
  }
 
  public static getToolsByTier(tier: "free" | "premium" | "ultimate"): string[] {
    return Object.entries(this.toolRequirements)
      .filter(([, requirement]) => requirement.requiredTier === tier)
      .map(([toolName]) => toolName);
  }
 
  public static getToolsByMinVersion(minVersion: number): string[] {
    return Object.entries(this.toolRequirements)
      .filter(([, requirement]) => requirement.minVersion >= minVersion)
      .map(([toolName]) => toolName);
  }
}