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#!/usr/bin/env deno --allow-write --allow-read --allow-run
import ArgParser from "args.ts";import { fileExists, readStringSync, writeStringSync } from "fileutils.ts";import {  gitCheckCleanState,  gitCommitFileChanges,  gitCreateTag,  gitPushWithTags} from "git.ts";import { BumpTarget, bumpVersion, canonical, isValid } from "semver.ts";
const VERSIONFILE = "VERSION";
const parser = new ArgParser({  boolean: ["f"],  alias: {    f: ["force"]  }});
const command = parser.getArg(0, "current");runCommand(command, parser);
function runCommand(command: string, parser: ArgParser) {  switch (command) {    case "init":      return init(parser);    case "current":      return current(parser);    case "set":      return setVersion(parser);    case "bump":      return bump(parser);
    default:      console.error(`Unknown command ${command}`);  }}
function init(parser: ArgParser) {  const version = parser.getArg(1);  if (!parser.getOpt("force") && fileExists(VERSIONFILE)) {    console.error("Version file already exists!");    return;  }  if (!isValid(version)) {    console.error("Please provide a valid version number");    return;  }  const canon = canonical(version);  writeStringSync(VERSIONFILE, canon);  console.log(canon);}
function setVersion(parser: ArgParser) {  const version = parser.getArg(1);  if (!isValid(version)) {    console.error("Please provide a valid version number");    return;  }  const canon = canonical(version);  writeStringSync(VERSIONFILE, canon);  console.log(canon);}
function current(parser: ArgParser) {  if (!fileExists(VERSIONFILE)) {    console.error("Cannot find version file");    return;  }  const version = readStringSync(VERSIONFILE);  console.log(canonical(version));}
async function bump(parser: ArgParser) {  const version = readStringSync(VERSIONFILE);  if (!parser.getOpt("force") && !(await gitCheckCleanState())) {    console.error("Repository is not in a clean state. Aborting.");    return;  }
  const target = parser.getArg(1, "patch");  if (!BumpTarget[target]) {    console.error(      `Invalid target: ${target}. Must be one of major, minor, patch`    );  }
  const bumped = bumpVersion(version, BumpTarget[target]);  const numeric = bumped.slice(1);  console.log(bumped);  writeStringSync(VERSIONFILE, bumped);  await gitCommitFileChanges(VERSIONFILE, `Bump version to ${bumped}`);  await gitCreateTag(bumped, `Version ${numeric}`);
  if (parser.getOpt("push")) {    console.log("pushing to remote via git push --follow-tags");    await gitPushWithTags();  }}