Add non-interactive mode to create commands

[P1llus]

Add CLI flag support to create package and create data-stream commands

Summary

Adds optional CLI flags to create package and create data-stream, allowing them to run without the TUI wizard — enabling automation, scripts, and LLM agents to create packages and data streams deterministically.

When any flag is explicitly passed, the TUI is skipped automatically.

Only flags required to make template decisions (package type, data stream type, input types) were added. All other fields use sensible production defaults.

Also fixes a minor YAML indentation bug in VarValueYamlString where multi-line block scalars (e.g. syslog_options, ssl defaults) lost their relative indentation when rendered into data stream manifests, causing newly created packages to fail format/lint checks.

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Changes

internal/packages/packages.go

Centralizes type definitions and fixes YAML rendering:

• Exports AllowedPackageTypes, AllowedDataStreamTypes, and AllowedLogsInputTypes so the TUI wizard, CLI validation, and manifest checks all share a single source of truth
• Fixes VarValueYamlString: multi-line YAML values were losing indentation on continuation lines because only the first line inherited the template's base indentation — now pads continuation lines by numSpaces so relative indentation stays valid
• isPackageManifest reuses AllowedPackageTypes instead of a local duplicate

cmd/create.go

Declares flag name constants and registers flags on both subcommands:

• create package: --type, --name
• create data-stream: --type, --name, --inputs

cmd/create_package.go

Adds createPackageNonInteractive():

• Triggered automatically when --type or --name is passed (detected via cmd.Flags().Changed())
• Validates --type against packages.AllowedPackageTypes and --name against existing validators
• Fills remaining fields with production defaults (version 0.0.1, Elastic License 2.0, basic subscription, etc.)

cmd/create_data_stream.go

Adds createDataStreamNonInteractive():

• Triggered automatically when --name, --type, or --inputs is passed
• Requires --name and --type (validated against packages.AllowedDataStreamTypes)
• For logs, requires --inputs validated against packages.AllowedLogsInputTypes
• For metrics, auto-enables synthetic source + time series mode
• TUI wizard uses AllowedLogsInputTypes map for both option keys and description labels

Tests

Covers descriptor construction, type validation, survey questions, and YAML rendering:

• cmd/create_package_test.go — Package descriptor construction and AllowedPackageTypes validation
• cmd/create_data_stream_test.go — Data stream descriptor construction, input type validation, and survey question generation per spec version
• internal/packages/packages_test.go — TestVarValueYamlString covering scalars, lists, custom indentation, and a regression test simulating template embedding at indent 6

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Usage

# Create a package (skips TUI automatically)
elastic-package create package --type integration --name my_package

# Create a logs data stream with specific inputs
elastic-package create data-stream --name access --type logs --inputs filestream,tcp

# Create a metrics data stream
elastic-package create data-stream --name status --type metrics

# TUI wizard still launches when no flags are passed
elastic-package create package
elastic-package create data-stream

[ilyannn]

Do we really need the --non-interactive flag if all the data are already known?

[P1llus]

Do we really need the --non-interactive flag if all the data are already known?

Not really, we could skip the TUI if parameters are provided? Less to input

[elasticmachine]

💔 Build Failed

• Buildkite Build
• Commit: 61d2f39

Failed CI Steps

• :windows: Run stack tests

History

• 💔 Build #7366 failed 8e63602

[jsoriano]

Nice, thanks! Added some suggestions about the help strings.

[jsoriano]

TUI is an implementation detail that we don't need to expose to users.

Suggested change

	createPackageCmd.Flags().String(createPackageTypeFlag, "integration", "package type (input, integration, content); when set the TUI wizard is skipped")
	createPackageCmd.Flags().String(createPackageTypeFlag, "integration", "set to input, integration or content to create an empty package of the given type in a non-interactive way")

[jsoriano]

Suggested change

	createPackageCmd.Flags().String(createPackageNameFlag, "new_package", "package name; when set the TUI wizard is skipped")
	createPackageCmd.Flags().String(createPackageNameFlag, "new_package", "set to create an empty package with the given name in a non-interactive way")

[jsoriano]

Please review these descriptions too to avoid references to TUI.