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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { core, primordials } from "ext:core/mod.js";
const ops = core.ops;
import { isatty } from "ext:runtime/40_tty.js";
import { stdin } from "ext:deno_io/12_io.js";
import { getNoColor } from "ext:deno_console/01_console.js";
const { Uint8Array, StringFromCodePoint } = primordials;
const ESC = "\x1b";
const CTRL_C = "\x03";
const CTRL_D = "\x04";
const bold = ansi(1, 22);
const italic = ansi(3, 23);
const yellow = ansi(33, 0);
function ansi(start, end) {
return (str) => getNoColor() ? str : `\x1b[${start}m${str}\x1b[${end}m`;
}
function alert(message = "Alert") {
if (!isatty(stdin.rid)) {
return;
}
core.print(
`${yellow(bold(`${message}`))} [${italic("Press any key to continue")}] `,
);
try {
stdin.setRaw(true);
stdin.readSync(new Uint8Array(1024));
} finally {
stdin.setRaw(false);
}
core.print("\n");
}
function prompt(message = "Prompt", defaultValue = "") {
if (!isatty(stdin.rid)) {
return null;
}
return ops.op_read_line_prompt(
`${message} `,
`${defaultValue}`,
);
}
const inputMap = new primordials.Map([
["Y", true],
["y", true],
["\r", true],
["\n", true],
["\r\n", true],
["N", false],
["n", false],
[ESC, false],
[CTRL_C, false],
[CTRL_D, false],
]);
function confirm(message = "Confirm") {
if (!isatty(stdin.rid)) {
return false;
}
core.print(`${yellow(bold(`${message}`))} [${italic("Y/n")}] `);
let val = false;
try {
stdin.setRaw(true);
while (true) {
const b = new Uint8Array(1024);
stdin.readSync(b);
let byteString = "";
let i = 0;
while (b[i]) byteString += StringFromCodePoint(b[i++]);
if (inputMap.has(byteString)) {
val = inputMap.get(byteString);
break;
}
}
} finally {
stdin.setRaw(false);
}
core.print(`${val ? "y" : "n"}\n`);
return val;
}
export { alert, confirm, prompt };
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