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lib/ui.ex
defmodule UI do
require Logger
# ----------------------------------------------------------------------------
# Messaging
# ----------------------------------------------------------------------------
def confirm(msg), do: confirm(msg, false)
def confirm(_msg, true), do: true
def confirm(msg, _default) do
IO.write("#{msg} (y/N) ")
case IO.gets("") do
"y\n" -> true
"Y\n" -> true
_ -> false
end
end
def flush, do: Logger.flush()
def report_step(msg), do: info(msg)
def report_step(msg, detail), do: info(msg, detail)
def begin_step(msg, detail \\ nil) do
if is_nil(detail) do
Logger.info(IO.ANSI.format([:green, msg, :reset], colorize?()))
else
Logger.info(IO.ANSI.format([:green, msg, :reset, ": ", :cyan, detail, :reset], colorize?()))
end
end
def end_step(msg, detail \\ nil) do
if is_nil(detail) do
Logger.info(IO.ANSI.format([:yellow, msg, :reset], colorize?()))
else
Logger.info(
IO.ANSI.format([:yellow, msg, :reset, ": ", :cyan, detail, :reset], colorize?())
)
end
end
def printf_debug(item) do
Logger.debug(inspect(item, pretty: true))
Logger.flush()
item
end
def debug(msg) do
Logger.debug(IO.ANSI.format([:green, msg, :reset], colorize?()))
end
def debug(msg, detail) do
Logger.debug(IO.ANSI.format([:green, msg, :reset, ": ", :cyan, detail, :reset], colorize?()))
end
def info(msg) do
Logger.info(IO.ANSI.format([:green, msg, :reset], colorize?()))
end
def info(msg, detail) do
msg = msg || ""
detail = detail || ""
Logger.info(IO.ANSI.format([:green, msg, :reset, ": ", :cyan, detail, :reset], colorize?()))
end
def warn(msg) do
Logger.warning(IO.ANSI.format([:yellow, msg, :reset], colorize?()))
end
def warn(msg, detail) do
Logger.warning(
IO.ANSI.format([:yellow, msg, :reset, ": ", :cyan, detail, :reset], colorize?())
)
end
def error(msg) do
Logger.error(IO.ANSI.format([:red, msg, :reset], colorize?()))
end
def error(msg, detail) do
Logger.error(IO.ANSI.format([:red, msg, :reset, ": ", :cyan, detail, :reset], colorize?()))
end
defp colorize? do
:prim_tty.isatty(:stderr)
|> case do
true -> true
_ -> false
end
end
# ----------------------------------------------------------------------------
# Interactive elements
# ----------------------------------------------------------------------------
def quiet?() do
Application.get_env(:fnord, :quiet)
end
def spin(processing, func) do
if quiet?() do
info(processing)
{_msg, result} = func.()
result
else
Spinner.run(func, processing)
end
end
def progress_bar_start(name, label, total) do
if !quiet?() do
Owl.ProgressBar.start(
id: name,
label: label,
total: total,
timer: true,
absolute_values: true
)
end
end
def progress_bar_update(name) do
if !quiet?() do
Owl.ProgressBar.inc(id: name)
Owl.LiveScreen.await_render()
end
end
def async_stream(enumerable, fun, label \\ "Working", options \\ []) do
progress_bar_start(:async_stream, label, Enum.count(enumerable))
enumerable
|> Util.async_stream(
fn item ->
result = fun.(item)
progress_bar_update(:async_stream)
result
end,
options
)
end
end