Installation simulation mode fix #103

cortex/cli.py

@@ -25,6 +25,7 @@
     print_all_preferences,
     format_preference_value
 )
+from cortex.preflight_checker import PreflightChecker, format_report, export_report
 from cortex.branding import (
     console,
     cx_print,
@@ -111,6 +112,11 @@
         sys.stdout.write('\r\033[K')
         sys.stdout.flush()
 
+    def install(self, software: str, execute: bool = False, dry_run: bool = False, simulate: bool = False):
+        # Handle simulation mode first - no API key needed
+        if simulate:
+            return self._run_simulation(software)
+
     def install(self, software: str, execute: bool = False, dry_run: bool = False):
         # Validate input first
         is_valid, error = validate_install_request(software)
@@ -245,6 +251,30 @@
                 history.update_installation(install_id, InstallationStatus.FAILED, str(e))
             self._print_error(f"Unexpected error: {str(e)}")
             return 1
+
+    def _run_simulation(self, software: str) -> int:
+        """Run preflight simulation check for installation"""
+        try:
+            # Get API key for LLM-powered package info (optional).
+            api_key = os.environ.get('OPENAI_API_KEY') or os.environ.get('ANTHROPIC_API_KEY')
+            provider = self._get_provider() if api_key else 'openai'
+
+            # Create checker with optional API key for enhanced accuracy
+            checker = PreflightChecker(api_key=api_key, provider=provider)
+            report = checker.run_all_checks(software)
+
+            # Print formatted report
+            output = format_report(report, software)
+            print(output)
+
+            # Return error code if blocking issues found
+            if report.errors:
+                return 1
+            return 0
+
+        except Exception as e:
+            self._print_error(f"Simulation failed: {str(e)}")
+            return 1
 
     def history(self, limit: int = 20, status: Optional[str] = None, show_id: Optional[str] = None):
         """Show installation history"""
@@ -799,6 +829,19 @@
         formatter_class=argparse.RawDescriptionHelpFormatter,
         epilog="""
 Examples:
+  cortex install docker
+  cortex install docker --execute
+  cortex install docker --simulate
+  cortex install "python 3.11 with pip"
+  cortex install nginx --dry-run
+  cortex history
+  cortex history show <id>
+  cortex rollback <id>
+  cortex check-pref
+  cortex check-pref ai.model
+  cortex edit-pref set ai.model gpt-4
+  cortex edit-pref delete theme
+  cortex edit-pref reset-all
   cortex demo                       # See Cortex in action (no API key needed)
   cortex install docker             # Plan docker installation
   cortex install docker --execute   # Actually install docker
@@ -832,6 +875,7 @@
     install_parser.add_argument('software', type=str, help='Software to install (natural language)')
     install_parser.add_argument('--execute', action='store_true', help='Execute the generated commands')
     install_parser.add_argument('--dry-run', action='store_true', help='Show commands without executing')
+    install_parser.add_argument('--simulate', action='store_true', help='Simulate installation without making changes')
 
     # History command
     history_parser = subparsers.add_parser('history', help='View installation history')
@@ -867,6 +911,8 @@
     cli = CortexCLI(verbose=args.verbose)
 
     try:
+        if args.command == 'install':
+            return cli.install(args.software, execute=args.execute, dry_run=args.dry_run, simulate=args.simulate)
         if args.command == 'demo':
             return cli.demo()
         elif args.command == 'wizard':