# ScadaLink CLI

Command-line tool for managing the ScadaLink SCADA system. Connects to a Central node via HTTP and routes commands through the Management API endpoint (`POST /management`), which dispatches to the ManagementActor. Authentication is handled server-side via LDAP.

## Installation

```sh
dotnet build src/ScadaLink.CLI
```

The output binary is `scadalink` (or `scadalink.exe` on Windows).

## Connection

Every command requires a connection to a running Central node. The management URL can be supplied three ways, evaluated in this priority order:

1. `--url` flag on the command line
2. `SCADALINK_MANAGEMENT_URL` environment variable
3. `managementUrl` field in `~/.scadalink/config.json`

```sh
scadalink --url http://central-host:5000 <command>
```

**Docker:** With the Docker setup, the Central UI (and management API) is available at `http://localhost:9001`:

```sh
scadalink --url http://localhost:9001 <command>
```

For HA failover, use a load balancer URL. The management API is stateless (Basic Auth per request), so any central node can handle any request without sticky sessions.

## Global Options

These options are accepted by the root command and inherited by all subcommands.

| Option | Description |
|--------|-------------|
| `--url <value>` | Management API URL (e.g., `http://localhost:9001`) |
| `--username <value>` | LDAP username for authentication |
| `--password <value>` | LDAP password for authentication |
| `--format <json\|table>` | Output format (default: `json`) |

## Configuration File

`~/.scadalink/config.json` is loaded at startup. All fields are optional.

```json
{
  "managementUrl": "http://localhost:9001"
}
```

For the Docker test environment, see `docker/README.md` for a ready-to-use config.

## Environment Variables

| Variable | Description |
|----------|-------------|
| `SCADALINK_MANAGEMENT_URL` | Management API URL (overrides config file) |
| `SCADALINK_FORMAT` | Default output format (overrides config file) |
| `SCADALINK_USERNAME` | LDAP username (fallback when `--username` is not supplied) |
| `SCADALINK_PASSWORD` | LDAP password (fallback when `--password` is not supplied). Preferred over `--password` on the command line, which leaks into process listings and shell history. |

## Output

All commands write JSON to stdout on success. Errors are written as JSON to stderr:

```json
{ "error": "Human-readable message", "code": "ERROR_CODE" }
```

Exit codes:

| Code | Meaning |
|------|---------|
| `0` | Success |
| `1` | Command error |
| `2` | Authorization failure |

---

## Command Reference

### `template` — Manage templates

#### `template list`

List all templates with their full attribute, alarm, script, and composition definitions.

```sh
scadalink --url <url> template list
```

#### `template get`

Get a single template by ID.

```sh
scadalink --url <url> template get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Template ID |

#### `template create`

Create a new template, optionally inheriting from a parent.

```sh
scadalink --url <url> template create --name <string> [--description <string>] [--parent-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Template name |
| `--description` | no | Template description |
| `--parent-id` | no | Parent template ID for inheritance |

#### `template update`

Update an existing template's name, description, or parent.

```sh
scadalink --url <url> template update --id <int> [--name <string>] [--description <string>] [--parent-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Template ID |
| `--name` | no | Updated template name |
| `--description` | no | Updated description |
| `--parent-id` | no | Updated parent template ID |

#### `template delete`

Delete a template by ID.

```sh
scadalink --url <url> template delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Template ID |

#### `template validate`

Run pre-deployment validation on a template (flattening, naming collisions, script compilation).

```sh
scadalink --url <url> template validate --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Template ID |

#### `template attribute add`

Add an attribute to a template.

```sh
scadalink --url <url> template attribute add --template-id <int> --name <string> --data-type <string> [--default-value <string>] [--tag-path <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Attribute name |
| `--data-type` | yes | Attribute data type (e.g. `Float`, `Int`, `String`, `Bool`) |
| `--default-value` | no | Default value |
| `--tag-path` | no | Data connection tag path |

#### `template attribute update`

Update an attribute on a template.

```sh
scadalink --url <url> template attribute update --template-id <int> --name <string> [--data-type <string>] [--default-value <string>] [--tag-path <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Attribute name to update |
| `--data-type` | no | Updated data type |
| `--default-value` | no | Updated default value |
| `--tag-path` | no | Updated tag path |

#### `template attribute delete`

Remove an attribute from a template.

```sh
scadalink --url <url> template attribute delete --template-id <int> --name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Attribute name to delete |

#### `template alarm add`

Add an alarm definition to a template.

```sh
scadalink --url <url> template alarm add --template-id <int> --name <string> --trigger-attribute <string> --condition <string> --setpoint <string> [--severity <string>] [--notification-list <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Alarm name |
| `--trigger-attribute` | yes | Attribute that triggers the alarm |
| `--condition` | yes | Trigger condition (e.g. `GreaterThan`, `LessThan`, `Equal`) |
| `--setpoint` | yes | Setpoint value |
| `--severity` | no | Alarm severity (default: `Warning`) |
| `--notification-list` | no | Notification list name to notify on alarm |

#### `template alarm update`

Update an alarm definition on a template.

```sh
scadalink --url <url> template alarm update --template-id <int> --name <string> [--condition <string>] [--setpoint <string>] [--severity <string>] [--notification-list <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Alarm name to update |
| `--condition` | no | Updated trigger condition |
| `--setpoint` | no | Updated setpoint value |
| `--severity` | no | Updated severity |
| `--notification-list` | no | Updated notification list name |

#### `template alarm delete`

Remove an alarm definition from a template.

```sh
scadalink --url <url> template alarm delete --template-id <int> --name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Alarm name to delete |

#### `template script add`

Add a script to a template.

```sh
scadalink --url <url> template script add --template-id <int> --name <string> --trigger-type <string> [--trigger-attribute <string>] [--interval <int>] --code <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Script name |
| `--trigger-type` | yes | Trigger type: `OnChange`, `Periodic`, `OnAlarm` |
| `--trigger-attribute` | no | Attribute name for `OnChange` trigger |
| `--interval` | no | Interval in milliseconds for `Periodic` trigger |
| `--code` | yes | Script source code (or `@filepath` to read from file) |

#### `template script update`

Update a script on a template.

```sh
scadalink --url <url> template script update --template-id <int> --name <string> [--trigger-type <string>] [--trigger-attribute <string>] [--interval <int>] [--code <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Script name to update |
| `--trigger-type` | no | Updated trigger type |
| `--trigger-attribute` | no | Updated trigger attribute |
| `--interval` | no | Updated interval |
| `--code` | no | Updated script source code (or `@filepath`) |

#### `template script delete`

Remove a script from a template.

```sh
scadalink --url <url> template script delete --template-id <int> --name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Template ID |
| `--name` | yes | Script name to delete |

#### `template composition add`

Add a feature module composition to a template.

```sh
scadalink --url <url> template composition add --template-id <int> --module-template-id <int> --instance-name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Target template ID |
| `--module-template-id` | yes | Feature module template ID to compose |
| `--instance-name` | yes | Instance name for the composed module (used in path-qualified addressing) |

#### `template composition delete`

Remove a feature module composition from a template.

```sh
scadalink --url <url> template composition delete --template-id <int> --instance-name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--template-id` | yes | Target template ID |
| `--instance-name` | yes | Instance name of the composed module to remove |

---

### `instance` — Manage instances

#### `instance get`

Get a single instance by ID.

```sh
scadalink --url <url> instance get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `instance list`

List instances, with optional filters.

```sh
scadalink --url <url> instance list [--site-id <int>] [--template-id <int>] [--search <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | no | Filter by site ID |
| `--template-id` | no | Filter by template ID |
| `--search` | no | Search term matched against instance name |

#### `instance create`

Create a new instance of a template at a site.

```sh
scadalink --url <url> instance create --name <string> --template-id <int> --site-id <int> [--area-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Unique instance name |
| `--template-id` | yes | Template to instantiate |
| `--site-id` | yes | Site where the instance will run |
| `--area-id` | no | Area within the site |

#### `instance deploy`

Deploy an instance to its site. Acquires the per-instance operation lock.

```sh
scadalink --url <url> instance deploy --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `instance enable`

Enable a previously disabled instance.

```sh
scadalink --url <url> instance enable --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `instance disable`

Disable a running instance without deleting it.

```sh
scadalink --url <url> instance disable --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `instance delete`

Delete an instance. The instance must be disabled first.

```sh
scadalink --url <url> instance delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `instance set-bindings`

Set data connection bindings for an instance's attributes.

```sh
scadalink --url <url> instance set-bindings --id <int> --bindings <json>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |
| `--bindings` | yes | JSON array of `[attributeName, dataConnectionId]` pairs (e.g. `[["Speed",7],["Temperature",7]]`) |

---

### `site` — Manage sites

#### `site get`

Get a single site by ID.

```sh
scadalink --url <url> site get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Site ID |

#### `site list`

List all registered sites.

```sh
scadalink --url <url> site list
```

#### `site create`

Register a new site.

```sh
scadalink --url <url> site create --name <string> --identifier <string> [--description <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Human-readable site name |
| `--identifier` | yes | Unique machine identifier used for cluster routing (e.g. `site-a`) |
| `--description` | no | Site description |

#### `site delete`

Delete a site. Fails if any instances are assigned to it.

```sh
scadalink --url <url> site delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Site ID |

#### `site deploy-artifacts`

Push compiled artifacts to one or all sites.

```sh
scadalink --url <url> site deploy-artifacts [--site-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | no | Target site ID; omit to deploy to all sites |

#### `site area list`

List all areas for a site.

```sh
scadalink --url <url> site area list --site-id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | yes | Site ID |

#### `site area create`

Create an area within a site.

```sh
scadalink --url <url> site area create --site-id <int> --name <string> [--parent-area-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | yes | Site ID |
| `--name` | yes | Area name |
| `--parent-area-id` | no | Parent area ID for nested areas |

#### `site area update`

Update an area's name or parent.

```sh
scadalink --url <url> site area update --id <int> [--name <string>] [--parent-area-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Area ID |
| `--name` | no | Updated area name |
| `--parent-area-id` | no | Updated parent area ID |

#### `site area delete`

Delete an area. Fails if any instances are assigned to it.

```sh
scadalink --url <url> site area delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Area ID |

---

### `deploy` — Deployment operations

#### `deploy instance`

Deploy a single instance (same as `instance deploy`).

```sh
scadalink --url <url> deploy instance --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

#### `deploy artifacts`

Deploy compiled artifacts to one or all sites (same as `site deploy-artifacts`).

```sh
scadalink --url <url> deploy artifacts [--site-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | no | Target site ID; omit for all sites |

#### `deploy status`

Query deployment records, with optional filters and pagination.

```sh
scadalink --url <url> deploy status [--instance-id <int>] [--status <string>] [--page <int>] [--page-size <int>]
```

| Option | Required | Default | Description |
|--------|----------|---------|-------------|
| `--instance-id` | no | — | Filter by instance ID |
| `--status` | no | — | Filter by deployment status string |
| `--page` | no | `1` | Page number |
| `--page-size` | no | `50` | Results per page |

---

### `data-connection` — Manage data connections

#### `data-connection get`

Get a single data connection by ID.

```sh
scadalink --url <url> data-connection get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Data connection ID |

#### `data-connection list`

List data connections, optionally filtered by site.

```sh
scadalink --url <url> data-connection list [--site-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | no | Filter by site ID |

#### `data-connection create`

Create a new data connection belonging to a specific site.

```sh
scadalink --url <url> data-connection create --site-id <int> --name <string> --protocol <string> [--configuration <json>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--site-id` | yes | Site ID the connection belongs to |
| `--name` | yes | Connection name |
| `--protocol` | yes | Protocol identifier (e.g. `OpcUa`) |
| `--configuration` | no | Protocol-specific configuration as a JSON string |

#### `data-connection update`

Update a data connection definition.

```sh
scadalink --url <url> data-connection update --id <int> [--name <string>] [--protocol <string>] [--configuration <json>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Data connection ID |
| `--name` | no | Updated connection name |
| `--protocol` | no | Updated protocol identifier |
| `--configuration` | no | Updated protocol-specific configuration as a JSON string |

#### `data-connection delete`

Delete a data connection.

```sh
scadalink --url <url> data-connection delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Data connection ID |

---

### `external-system` — Manage external HTTP systems

#### `external-system get`

Get a single external system definition by ID.

```sh
scadalink --url <url> external-system get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | External system ID |

#### `external-system list`

List all external system definitions.

```sh
scadalink --url <url> external-system list
```

#### `external-system create`

Register an external HTTP system that scripts can call.

```sh
scadalink --url <url> external-system create --name <string> --endpoint-url <url> --auth-type <string> [--auth-config <json>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Display name |
| `--endpoint-url` | yes | Base URL of the external system |
| `--auth-type` | yes | Authentication type: `ApiKey` or `BasicAuth` |
| `--auth-config` | no | Auth credentials as a JSON string |

#### `external-system update`

Update an external system definition.

```sh
scadalink --url <url> external-system update --id <int> [--name <string>] [--endpoint-url <url>] [--auth-type <string>] [--auth-config <json>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | External system ID |
| `--name` | no | Updated display name |
| `--endpoint-url` | no | Updated base URL |
| `--auth-type` | no | Updated authentication type |
| `--auth-config` | no | Updated auth credentials as a JSON string |

#### `external-system delete`

Delete an external system definition.

```sh
scadalink --url <url> external-system delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | External system ID |

---

### `notification` — Manage notification lists

#### `notification get`

Get a single notification list by ID.

```sh
scadalink --url <url> notification get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Notification list ID |

#### `notification list`

List all notification lists.

```sh
scadalink --url <url> notification list
```

#### `notification create`

Create a notification list with one or more recipients.

```sh
scadalink --url <url> notification create --name <string> --emails <email1,email2,...>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Notification list name |
| `--emails` | yes | Comma-separated list of recipient email addresses |

#### `notification update`

Update a notification list's name or recipients.

```sh
scadalink --url <url> notification update --id <int> [--name <string>] [--emails <email1,email2,...>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Notification list ID |
| `--name` | no | Updated list name |
| `--emails` | no | Updated comma-separated list of recipient email addresses |

#### `notification delete`

Delete a notification list.

```sh
scadalink --url <url> notification delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Notification list ID |

#### `notification smtp list`

Show the current SMTP configuration.

```sh
scadalink --url <url> notification smtp list
```

#### `notification smtp update`

Update the SMTP configuration.

```sh
scadalink --url <url> notification smtp update --host <string> --port <int> --auth-type <string> [--username <string>] [--password <string>] [--from-address <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--host` | yes | SMTP server hostname |
| `--port` | yes | SMTP server port |
| `--auth-type` | yes | Authentication type: `OAuth2` or `Basic` |
| `--username` | no | SMTP username (for Basic auth) |
| `--password` | no | SMTP password (for Basic auth) |
| `--from-address` | no | Sender email address |

---

### `security` — Security settings

#### `security api-key list`

List all inbound API keys.

```sh
scadalink --url <url> security api-key list
```

#### `security api-key create`

Create a new inbound API key. The generated key value is returned in the response and not stored in plaintext — save it immediately.

```sh
scadalink --url <url> security api-key create --name <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Descriptive label for the key |

#### `security api-key update`

Update an API key's name or enabled status.

```sh
scadalink --url <url> security api-key update --id <int> [--name <string>] [--enabled <bool>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | API key ID |
| `--name` | no | Updated label |
| `--enabled` | no | Enable or disable the key (`true` or `false`) |

#### `security api-key delete`

Revoke and delete an API key.

```sh
scadalink --url <url> security api-key delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | API key ID |

#### `security role-mapping list`

List all LDAP group → role mappings.

```sh
scadalink --url <url> security role-mapping list
```

#### `security role-mapping create`

Map an LDAP group to a ScadaLink role.

```sh
scadalink --url <url> security role-mapping create --ldap-group <string> --role <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--ldap-group` | yes | LDAP group distinguished name or CN |
| `--role` | yes | ScadaLink role: `Admin`, `Design`, or `Deployment` |

#### `security role-mapping update`

Update an LDAP role mapping.

```sh
scadalink --url <url> security role-mapping update --id <int> [--ldap-group <string>] [--role <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Mapping ID |
| `--ldap-group` | no | Updated LDAP group distinguished name or CN |
| `--role` | no | Updated ScadaLink role |

#### `security role-mapping delete`

Remove an LDAP role mapping.

```sh
scadalink --url <url> security role-mapping delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Mapping ID |

#### `security scope-rule list`

List all site scope rules for role mappings.

```sh
scadalink --url <url> security scope-rule list [--role-mapping-id <int>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--role-mapping-id` | no | Filter by role mapping ID |

#### `security scope-rule add`

Add a site scope rule to a role mapping, restricting it to a specific site.

```sh
scadalink --url <url> security scope-rule add --role-mapping-id <int> --site-id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--role-mapping-id` | yes | Role mapping ID |
| `--site-id` | yes | Site ID to scope the mapping to |

#### `security scope-rule delete`

Remove a site scope rule from a role mapping.

```sh
scadalink --url <url> security scope-rule delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Scope rule ID |

---

### `health` — Health monitoring

#### `health summary`

Return the current health state for all known sites as a JSON object keyed by site identifier.

```sh
scadalink --url <url> health summary
```

#### `health site`

Return the health state for a single site.

```sh
scadalink --url <url> health site --identifier <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--identifier` | yes | Site identifier (e.g. `site-a`) |

#### `health event-log`

Query the site event log for a specific site. Events are fetched remotely from the site's local SQLite store.

```sh
scadalink --url <url> health event-log --site-identifier <string> [--from <datetime>] [--to <datetime>] [--search <string>] [--page <int>] [--page-size <int>]
```

| Option | Required | Default | Description |
|--------|----------|---------|-------------|
| `--site-identifier` | yes | — | Site identifier |
| `--from` | no | — | Start timestamp in ISO 8601 format |
| `--to` | no | — | End timestamp in ISO 8601 format |
| `--search` | no | — | Keyword search term |
| `--page` | no | `1` | Page number |
| `--page-size` | no | `50` | Results per page |

#### `health parked-messages`

Query parked (dead-letter) messages at a specific site.

```sh
scadalink --url <url> health parked-messages --site-identifier <string> [--page <int>] [--page-size <int>]
```

| Option | Required | Default | Description |
|--------|----------|---------|-------------|
| `--site-identifier` | yes | — | Site identifier |
| `--page` | no | `1` | Page number |
| `--page-size` | no | `50` | Results per page |

---

### `debug` — Runtime debugging

#### `debug snapshot`

Request a point-in-time snapshot of a running instance's current attribute values and alarm states from the site. The instance must be deployed and enabled.

```sh
scadalink --url <url> debug snapshot --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

The command resolves the instance's site internally and routes the request to the correct site cluster. Returns all attribute values (name, value, quality, timestamp) and alarm states (name, state, priority, timestamp) at the moment the request reaches the site.

#### `debug stream`

Stream live attribute values and alarm state changes in real-time using a SignalR WebSocket connection to the central server's `/hubs/debug-stream` hub. Events are printed as they arrive. Press Ctrl+C to disconnect.

```sh
scadalink --url <url> debug stream --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Instance ID |

The default JSON format outputs one NDJSON object per event line with a `type` field (`snapshot`, `attributeChanged`, or `alarmChanged`). Table format (`--format table`) shows a formatted initial snapshot followed by streaming rows prefixed with `ATTR` or `ALARM`.

Features:
- Automatic reconnection on connection loss with re-subscribe.
- Works through the Traefik load balancer (WebSocket upgrade proxied natively).
- Requires the `Deployment` role.

---

### `audit-log` — Audit log queries

#### `audit-log query`

Query the central audit log with optional filters and pagination.

```sh
scadalink --url <url> audit-log query [options]
```

| Option | Required | Default | Description |
|--------|----------|---------|-------------|
| `--user` | no | — | Filter by username |
| `--entity-type` | no | — | Filter by entity type (e.g. `Template`, `Instance`) |
| `--action` | no | — | Filter by action (e.g. `Create`, `Delete`) |
| `--from` | no | — | Start timestamp in ISO 8601 format |
| `--to` | no | — | End timestamp in ISO 8601 format |
| `--page` | no | `1` | Page number |
| `--page-size` | no | `50` | Results per page |

---

### `shared-script` — Manage shared scripts

#### `shared-script list`

List all shared script definitions.

```sh
scadalink --url <url> shared-script list
```

#### `shared-script get`

Get a single shared script by ID.

```sh
scadalink --url <url> shared-script get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Shared script ID |

#### `shared-script create`

Create a new shared script.

```sh
scadalink --url <url> shared-script create --name <string> --code <string>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Shared script name |
| `--code` | yes | Script source code (or `@filepath` to read from file) |

#### `shared-script update`

Update a shared script's name or code.

```sh
scadalink --url <url> shared-script update --id <int> [--name <string>] [--code <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Shared script ID |
| `--name` | no | Updated script name |
| `--code` | no | Updated script source code (or `@filepath`) |

#### `shared-script delete`

Delete a shared script.

```sh
scadalink --url <url> shared-script delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Shared script ID |

---

### `db-connection` — Manage database connections

#### `db-connection list`

List all database connection definitions.

```sh
scadalink --url <url> db-connection list
```

#### `db-connection get`

Get a single database connection by ID.

```sh
scadalink --url <url> db-connection get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Database connection ID |

#### `db-connection create`

Create a new database connection definition.

```sh
scadalink --url <url> db-connection create --name <string> --connection-string <string> [--provider <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Connection name |
| `--connection-string` | yes | Database connection string |
| `--provider` | no | Database provider (default: `SqlServer`) |

#### `db-connection update`

Update a database connection definition.

```sh
scadalink --url <url> db-connection update --id <int> [--name <string>] [--connection-string <string>] [--provider <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Database connection ID |
| `--name` | no | Updated connection name |
| `--connection-string` | no | Updated connection string |
| `--provider` | no | Updated database provider |

#### `db-connection delete`

Delete a database connection definition.

```sh
scadalink --url <url> db-connection delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | Database connection ID |

---

### `api-method` — Manage inbound API methods

#### `api-method list`

List all inbound API method definitions.

```sh
scadalink --url <url> api-method list
```

#### `api-method get`

Get a single inbound API method by ID.

```sh
scadalink --url <url> api-method get --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | API method ID |

#### `api-method create`

Create a new inbound API method.

```sh
scadalink --url <url> api-method create --name <string> --code <string> [--description <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--name` | yes | Method name (used as the URL path segment in `POST /api/{methodName}`) |
| `--code` | yes | Script source code implementing the method (or `@filepath` to read from file) |
| `--description` | no | Method description |

#### `api-method update`

Update an inbound API method.

```sh
scadalink --url <url> api-method update --id <int> [--name <string>] [--code <string>] [--description <string>]
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | API method ID |
| `--name` | no | Updated method name |
| `--code` | no | Updated script source code (or `@filepath`) |
| `--description` | no | Updated description |

Script changes take effect immediately — the updated code is recompiled in-memory on the active central node. No restart is required.

#### `api-method delete`

Delete an inbound API method.

```sh
scadalink --url <url> api-method delete --id <int>
```

| Option | Required | Description |
|--------|----------|-------------|
| `--id` | yes | API method ID |

---

## Architecture Notes

The CLI connects to the Central cluster using Akka.NET's `ClusterClient`. It does not join the cluster — it contacts the `ClusterClientReceptionist` on one of the configured Central nodes and sends commands to the `ManagementActor` at path `/user/management`.

The connection is established per-command invocation and torn down cleanly via `CoordinatedShutdown` when the command completes.

Role enforcement is applied by the ManagementActor on the server side. The CLI authenticates against LDAP using `--username` / `--password`, resolves LDAP group memberships, then maps groups to ScadaLink roles (Admin, Design, Deployment) via role mappings configured in the security settings. Operations require the appropriate role — for example, creating templates requires `Design`, deploying requires `Deployment`. In the test environment, use the `multi-role` user (password: `password`) which has all three roles.

## Issues & Missing Features

If you encounter bugs, unexpected behavior, or missing features in the CLI, log them in [`cli_issues.md`](../../cli_issues.md) in the project root. Include a brief description, the command involved, and any relevant error output.
