terminal

type Cell struct {
	Value string
	Color string
}

type Input struct {
	// Prompt is a single-line prompt to give the user such as "Continue?"
	// The user will input their answer after this prompt.
	Prompt string

	// Style is the style to apply to the input. If this is blank,
	// the output won't be colorized in any way.
	Style string

	// True if this input is a secret. The input will be masked.
	Secret bool
}

type NamedValue struct {
	Name  string
	Value interface{}
}

type Option func(*config)

type Table struct {
	Headers []string
	Rows    [][]Cell
}

type UI interface {
	// Input asks the user for input. This will immediately return an error
	// if the UI doesn't support interaction. You can test for interaction
	// ahead of time with Interactive().
	Input(*Input) (string, error)

	// Interactive returns true if this prompt supports user interaction.
	// If this is false, Input will always error.
	Interactive() bool

	// Output outputs a message directly to the terminal. The remaining
	// arguments should be interpolations for the format string. After the
	// interpolations you may add Options.
	Output(string, ...interface{})

	// Output data as a table of data. Each entry is a row which will be output
	// with the columns lined up nicely.
	NamedValues([]NamedValue, ...Option)

	// OutputWriters returns stdout and stderr writers. These are usually
	// but not always TTYs. This is useful for subprocesses, network requests,
	// etc. Note that writing to these is not thread-safe by default so
	// you must take care that there is only ever one writer.
	OutputWriters() (stdout, stderr io.Writer, err error)

	// Table outputs the information formatted into a Table structure.
	Table(*Table, ...Option)
}