package engineversion

// Stable error codes returned alongside service-level errors. The values
// match the vocabulary frozen by `gamemaster/README.md §Error Model` and
// `gamemaster/api/internal-openapi.yaml`. The handler layer (Stage 19)
// maps the wrapped sentinel error to one of these codes; tests compare
// against the constant.
const (
	// ErrorCodeInvalidRequest reports that the request envelope failed
	// structural validation (empty required fields, malformed JSON
	// options, malformed semver, malformed Docker reference, partial
	// Update with no fields set, unsupported status enum).
	ErrorCodeInvalidRequest = "invalid_request"

	// ErrorCodeConflict reports that an Insert was rejected because a
	// row with the same `version` already exists.
	ErrorCodeConflict = "conflict"

	// ErrorCodeEngineVersionNotFound reports that the requested
	// version is not present in the registry. Returned by Get,
	// Update, Deprecate, Delete, and ResolveImageRef.
	ErrorCodeEngineVersionNotFound = "engine_version_not_found"

	// ErrorCodeEngineVersionInUse reports that a hard-delete attempt
	// was rejected because the version is still referenced by a
	// non-finished `runtime_records` row.
	ErrorCodeEngineVersionInUse = "engine_version_in_use"

	// ErrorCodeServiceUnavailable reports that a steady-state
	// dependency (PostgreSQL) was unreachable for this call.
	ErrorCodeServiceUnavailable = "service_unavailable"

	// ErrorCodeInternal reports an unexpected error not classified by
	// the other codes.
	ErrorCodeInternal = "internal_error"
)