firebase

type CollectionInfo struct {
	// Name is the Firestore collection name.
	Name string
	// TableName is the SQL-safe table name derived from Name.
	TableName string
	// Columns holds the inferred column definitions.
	Columns []ColumnDef
	// SampleCount is the number of documents sampled during inference.
	SampleCount int
}

type ColumnDef struct {
	// Name is the SQL-safe column name.
	Name string
	// SQLType is the inferred PostgreSQL type.
	SQLType string
	// Nullable indicates whether the column may be NULL (field missing in some docs).
	Nullable bool
}

type Options struct {
	// ExportDir is the directory produced by `firebase firestore:export`.
	// It must contain at least one *.json file with Firestore document data.
	ExportDir string

	// AuthExportFile is an optional path to a Firebase Auth users JSON export
	// (produced by `firebase auth:export --format json <file>`).
	// When set, an auth-import.sql file is generated alongside the schema migration.
	AuthExportFile string

	// OutputDir is the directory where migration artifacts are written.
	// Defaults to <ExportDir>/nself-migration if empty.
	OutputDir string

	// ProjectName is used to name the generated migration files and schema.
	// Defaults to "firebase_import" if empty.
	ProjectName string

	// DryRun, when true, prints the generated SQL to stdout instead of writing files.
	DryRun bool
}

type Result struct {
	// SchemaSQL is the path to the generated SQL migration file.
	SchemaSQL string
	// HasuraYAML is the path to the generated Hasura metadata YAML.
	HasuraYAML string
	// AuthImportSQL is the path to the auth user import script (may be empty).
	AuthImportSQL string
	// Summary is the path to the human-readable next-steps summary.
	Summary string
	// Tables is the list of inferred table names.
	Tables []string
}