package schema

// Column represents a single column in a table.
type Column struct {
	TableName              string `db:"table_name"`
	Name                   string `db:"column_name"`
	Type                   string `db:"column_type"`
	IsNotNull              bool   `db:"notnull"`
	HasDefaultValue        bool   `db:"has_default_value"`
	DefaultValue           string `db:"dflt_value"`
	IsPrimaryKey           bool   `db:"is_primary_key"`
	IsForeignKey           bool   `db:"is_foreign_key"`
	ForeignKeyTargetTable  string `db:"fk_target_table"`
	ForeignKeyTargetColumn string `db:"fk_target_column"`
}

// IsNullableForeignKey is a helper function.
func (c Column) IsNullableForeignKey() bool {
	return !c.IsNotNull && !c.IsPrimaryKey && c.IsForeignKey
}

// Table is a single SQLite table.
type Table struct {
	TableName      string `db:"name"`
	IsStrict       bool   `db:"is_strict"`
	IsWithoutRowid bool   `db:"is_without_rowid"`

	Columns []Column

	TypeIDName string
	VarName    string
	TypeName   string
}

// Schema is a container for a bunch of Tables, indexed by table name.
type Schema map[string]Table