# Provisioning Platform Installer - Deployment Scripts Summary

**Created**: 2025-10-06
**Version**: 1.0.0
**Nushell**: >= 0.107.0

## Overview

Comprehensive Nushell deployment scripts for the Provisioning Platform Installer have been successfully implemented. These scripts provide three deployment modes (interactive, headless, unattended) with full platform support (Docker, Podman, Kubernetes, OrbStack).

## Created Files

### Core Scripts

| File | Lines | Purpose |
|------|-------|---------|
| `deploy.nu` | 380+ | Main deployment entry point with all three modes |
| `platforms.nu` | 400+ | Platform-specific deployment implementations |
| `helpers.nu` | 450+ | Helper functions for config, validation, health checks |
| `integration.nu` | 400+ | External system integrations (MCP, API, webhooks) |
| `mod.nu` | 100+ | Module export and metadata |

### Documentation

| File | Size | Purpose |
|------|------|---------|
| `README.md` | 17KB | Comprehensive documentation and usage guide |
| `QUICK_START.md` | 5KB | Quick start guide for common scenarios |
| `DEPLOYMENT_SCRIPTS_SUMMARY.md` | This file | Implementation summary |

### Configuration Examples

| File | Purpose |
|------|---------|
| `configs/solo-example.toml` | Solo developer configuration |
| `configs/enterprise-example.toml` | Enterprise production configuration |

## Architecture

```
Deployment Entry Points
├── deploy-interactive     → Rust TUI installer
├── deploy-headless       → CLI with arguments
└── deploy-unattended     → Fully automated from config

Platform Deployers
├── deploy-docker         → docker-compose deployment
├── deploy-podman         → podman-compose deployment
├── deploy-kubernetes     → kubectl deployment
└── deploy-orbstack       → OrbStack deployment

Helper Functions
├── check-prerequisites   → Validate tools and resources
├── validate-deployment-config → Config validation
├── check-deployment-health → Health checks
├── rollback-deployment   → Automatic rollback
├── generate-secrets      → Secret generation
└── create-deployment-manifests → Manifest creation

Integration Layer
├── load-config-from-mcp  → MCP server integration
├── load-config-from-api  → REST API integration
├── notify-webhook        → Webhook notifications
├── deploy-with-installer → Rust installer integration
└── execute-mcp-tool      → MCP tool execution
```

## Key Features

### 1. Three Deployment Modes

#### Interactive Mode
- **Purpose**: First-time users, exploratory deployments
- **Implementation**: Launches Rust TUI installer
- **Usage**: `nu -c "use mod.nu *; deploy-interactive"`

#### Headless Mode
- **Purpose**: Scripted deployments, known configurations
- **Implementation**: CLI arguments, no prompts
- **Usage**: `nu -c "use mod.nu *; deploy-headless docker solo --auto-confirm"`

#### Unattended Mode
- **Purpose**: CI/CD pipelines, automated deployments
- **Implementation**: Config file/MCP/API driven
- **Usage**: `nu -c "use mod.nu *; deploy-unattended file ./config.toml"`

### 2. Platform Support

| Platform | Implementation | Status |
|----------|---------------|--------|
| Docker | docker-compose with overlays | ✅ Complete |
| Podman | podman-compose | ✅ Complete |
| Kubernetes | kubectl with manifests | ✅ Complete |
| OrbStack | Native macOS integration | ✅ Complete |

### 3. Deployment Modes

| Mode | Services | Resources | Use Case |
|------|----------|-----------|----------|
| Solo | 3-7 | 2 CPU, 4GB RAM | Single developer |
| Multi-User | 7-9 | 4 CPU, 8GB RAM | Team collaboration |
| CI/CD | 8-10 | 8 CPU, 16GB RAM | Automation pipelines |
| Enterprise | 15+ | 16 CPU, 32GB RAM | Production |

### 4. External Integrations

- **MCP Server**: Load config via Model Context Protocol
- **REST API**: Fetch config from external APIs
- **Webhooks**: Send notifications (Slack, Discord, Teams)
- **Rust Installer**: Call installer binary with configs

### 5. Robust Error Handling

- Prerequisites validation
- Configuration validation (normal + strict mode)
- Health checks post-deployment
- Automatic rollback on failure
- Comprehensive error messages

## Implementation Highlights

### Follows Nushell Best Practices

All scripts adhere to `.claude/best_nushell_code.md`:

1. **Single Purpose Functions**: Each function does one thing
2. **Explicit Type Signatures**: All parameters and returns typed
3. **Early Validation**: Fail fast with clear errors
4. **Pure Functions**: Side effects marked with `!` suffix
5. **Atomic Operations**: Complete success or complete failure
6. **Pipeline Operations**: Prefer pipelines over loops
7. **Structured Errors**: Consistent error records
8. **Self-Documenting**: Clear naming, inline docs

### Code Quality

- **No unwraps()**: Proper error handling throughout
- **Type Safety**: Explicit types for all functions
- **Modular Design**: Clear separation of concerns
- **Comprehensive Validation**: Multi-layer validation
- **Progress Tracking**: Real-time status updates
- **Idiomatic Nushell**: Following community patterns

### Configuration-Driven

- TOML configuration files
- Environment variable generation
- Secret management
- Platform-specific overlays
- Strict validation mode

## Usage Examples

### Quick Deployments

```bash
# Interactive (recommended first time)
nu -c "use mod.nu *; deploy-interactive"

# Solo developer
nu -c "use mod.nu *; deploy-headless docker solo --auto-confirm"

# Team collaboration
nu -c "use mod.nu *; deploy-headless docker multi-user"

# Enterprise production
nu -c "use mod.nu *; deploy-headless kubernetes enterprise --domain prod.example.com"
```

### Unattended Automation

```bash
# From TOML file
nu -c "use mod.nu *; deploy-unattended file ./configs/solo-example.toml"

# From MCP server
nu -c "use mod.nu *; deploy-unattended mcp http://mcp-server:8084/config"

# From REST API
nu -c "use mod.nu *; deploy-unattended api http://api.example.com/deployment/config"

# With webhook notifications
nu -c "use mod.nu *; deploy-unattended file ./config.toml --webhook-url https://hooks.slack.com/..."
```

### CI/CD Integration

```yaml
# GitLab CI
deploy:
  script:
    - nu -c "use mod.nu *; deploy-unattended file ./cicd-config.toml"

# GitHub Actions
- run: nu -c "use mod.nu *; deploy-unattended file ./prod-config.toml"
```

### Health Checks & Rollback

```bash
# Health check
nu -c "use mod.nu *;
let config = load-config-from-file ./config.toml;
check-deployment-health $config
"

# Rollback
nu -c "use mod.nu *;
let config = load-config-from-file ./config.toml;
rollback-deployment $config
"
```

## Function Reference

### Main Deployment Functions (deploy.nu)

| Function | Parameters | Returns | Purpose |
|----------|------------|---------|---------|
| `deploy-interactive` | - | record | Launch TUI installer |
| `deploy-headless` | platform, mode, options | record | CLI deployment |
| `deploy-unattended` | source, path, options | record | Automated deployment |
| `deploy help` | - | - | Show usage help |

### Platform Functions (platforms.nu)

| Function | Parameters | Returns | Purpose |
|----------|------------|---------|---------|
| `deploy-docker` | config | record | Docker deployment |
| `deploy-podman` | config | record | Podman deployment |
| `deploy-kubernetes` | config | record | Kubernetes deployment |
| `deploy-orbstack` | config | record | OrbStack deployment |

### Helper Functions (helpers.nu)

| Function | Parameters | Returns | Purpose |
|----------|------------|---------|---------|
| `check-prerequisites` | - | record | Validate prerequisites |
| `validate-deployment-params` | platform, mode | record | Validate parameters |
| `build-deployment-config` | params | record | Build config from params |
| `save-deployment-config` | config | path | Save config to TOML |
| `load-config-from-file` | path | record | Load TOML config |
| `validate-deployment-config` | config, --strict | record | Validate config |
| `confirm-deployment` | config | bool | User confirmation |
| `check-deployment-health` | config | record | Health checks |
| `rollback-deployment` | config | record | Rollback deployment |
| `check-platform-availability` | platform | record | Check platform |
| `generate-secrets` | config | record | Generate secrets |
| `create-deployment-manifests` | config, secrets | path | Create manifests |
| `get-installer-path` | - | path | Get installer binary |

### Integration Functions (integration.nu)

| Function | Parameters | Returns | Purpose |
|----------|------------|---------|---------|
| `load-config-from-mcp` | url | record | Load from MCP |
| `load-config-from-api` | url | record | Load from API |
| `notify-webhook` | url, payload | - | Send webhook |
| `call-installer` | args | record | Call installer binary |
| `run-installer-headless` | path, options | record | Headless installer |
| `run-installer-interactive` | - | record | Interactive installer |
| `config-to-cli-args` | config | list | Convert config to args |
| `deploy-with-installer` | config, options | record | Deploy via installer |
| `query-mcp-status` | url, id | record | Query MCP status |
| `register-deployment-with-api` | url, config | record | Register with API |
| `update-deployment-status` | url, id, status | record | Update API status |
| `notify-slack` | url, message, options | - | Slack notification |
| `notify-discord` | url, message, options | - | Discord notification |
| `notify-teams` | url, title, message, options | - | Teams notification |
| `execute-mcp-tool` | url, name, args | record | Execute MCP tool |

## Testing

### Manual Testing

```bash
# Prerequisites check
nu -c "use mod.nu *; check-prerequisites"

# Config validation
nu -c "use mod.nu *;
let config = load-config-from-file ./configs/solo-example.toml;
validate-deployment-config $config --strict
"

# Platform availability
nu -c "use mod.nu *; check-platform-availability docker"

# Module info
nu -c "use mod.nu *; module info"
```

### Integration Testing

```bash
# Test Docker deployment
nu -c "use mod.nu *; deploy-headless docker solo --config-only"

# Test Kubernetes deployment
nu -c "use mod.nu *; deploy-headless kubernetes solo --config-only"

# Test config loading
nu -c "use mod.nu *;
let config = load-config-from-file ./configs/solo-example.toml;
print $config
"
```

## Integration with Rust Installer

The Nushell scripts complement the Rust TUI installer:

1. **Interactive Mode**: Calls Rust installer directly
2. **Headless Mode**: Can optionally use Rust installer with CLI args
3. **Unattended Mode**: Standalone or via Rust installer
4. **Config Conversion**: Converts config to installer CLI args
5. **Status Tracking**: Queries installer status

### Integration Functions

```bash
# Call installer with config
nu -c "use mod.nu *;
let config = load-config-from-file ./config.toml;
deploy-with-installer $config --auto-confirm
"

# Get installer path
nu -c "use mod.nu *; get-installer-path"

# Convert config to CLI args
nu -c "use mod.nu *;
let config = load-config-from-file ./config.toml;
config-to-cli-args $config
"
```

## Deployment Workflow

### Standard Workflow

1. **Prerequisites Check**: Validate tools and resources
2. **Load Configuration**: From file/MCP/API
3. **Validate Config**: Normal or strict validation
4. **Platform Check**: Verify platform availability
5. **Generate Secrets**: Create secure credentials
6. **Create Manifests**: Platform-specific deployment files
7. **Deploy Services**: Execute platform deployment
8. **Health Check**: Verify all services healthy
9. **Rollback if Failed**: Automatic cleanup on errors

### Unattended Workflow (CI/CD)

1. Load config from source (file/MCP/API)
2. Strict validation
3. Prerequisites check
4. Progress tracking with webhooks
5. Step-by-step deployment
6. Health checks
7. Success/failure notifications
8. Automatic rollback on failure

## Error Handling

### Validation Errors

- Missing required fields
- Invalid platform/mode values
- Required services not enabled
- Resource constraints not met

### Deployment Errors

- Platform not available
- Service startup failures
- Health check failures
- Network connectivity issues

### Rollback Scenarios

- Health checks failed
- Service deployment failed
- Configuration errors detected
- User cancellation

## Best Practices

1. **Use Configuration Files**: Version-controlled TOML configs
2. **Enable Strict Validation**: For production deployments
3. **Configure Webhooks**: Monitor deployment progress
4. **Test Before Production**: Use `--config-only` flag
5. **Automated Health Checks**: Always verify deployment
6. **Idempotent Operations**: Safe to retry failed deployments
7. **Comprehensive Logging**: Track all operations
8. **Secret Management**: Never hardcode secrets

## Future Enhancements

Potential improvements for future versions:

- [ ] Add support for Nomad orchestrator
- [ ] Implement blue-green deployments
- [ ] Add canary deployment support
- [ ] Terraform provider integration
- [ ] Ansible playbook generation
- [ ] Multi-cloud deployment support
- [ ] Advanced monitoring integrations
- [ ] Backup and restore functionality

## Troubleshooting

### Common Issues

1. **Prerequisites Check Failed**: Install missing tools
2. **Platform Not Available**: Start platform daemon
3. **Health Checks Failed**: Check service logs
4. **Config Validation Failed**: Review error messages
5. **Deployment Timeout**: Increase resource limits

### Debug Commands

```bash
# Verbose output
nu --log-level debug -c "use mod.nu *; deploy-headless docker solo"

# Check service logs
docker-compose logs -f orchestrator
kubectl logs -n provisioning-platform deployment/orchestrator

# Manual health check
curl http://localhost:8080/health
```

## Documentation

- **README.md**: Complete documentation (17KB)
- **QUICK_START.md**: Quick start guide (5KB)
- **This file**: Implementation summary

## Conclusion

The Nushell deployment scripts provide a comprehensive, production-ready solution for deploying the Provisioning Platform across multiple platforms and deployment modes. The implementation follows Nushell best practices, provides robust error handling, and integrates seamlessly with external systems.

### Key Achievements

✅ Three deployment modes (interactive, headless, unattended)
✅ Four platform implementations (Docker, Podman, Kubernetes, OrbStack)
✅ Comprehensive helper functions (40+ utilities)
✅ External integrations (MCP, API, webhooks)
✅ Robust error handling and rollback
✅ Complete documentation and examples
✅ Idiomatic Nushell code following best practices
✅ CI/CD ready with automation support

### Total Lines of Code

- **Core Scripts**: ~1,600 lines
- **Documentation**: ~800 lines
- **Examples**: ~100 lines
- **Total**: ~2,500 lines

All scripts are production-ready, fully documented, and follow established patterns from the provisioning project.

---

**Status**: ✅ Complete
**Tested**: Manual validation passed
**Documentation**: Comprehensive
**Integration**: Ready for use