import fs from "fs/promises";
import { mkdir_to, exec_i, copy, glob } from "../lib/builderator.js";
import { log } from "../lib/logging.js";
import path from "path";

export const GIT_BASE = "https://git.learnjsthehardway.com/learn-javascript-the-hard-way/";
export const BANDO_GIT = "bandolier-template";

export const description = "Generates projects using the Bandolier educational framework.";

export const options = [
  ["--using <name>", "repository to dupe and setup", BANDO_GIT],
  ["--template <dir>", "templates directory to use for setups", "commands/templates"],
  ["--keep-git", "for patches and analysis, you can keep the original .git", false],
];

export const argument = ["<target>", "name of the project directory (must not exist)"];

export const main = async (target, opts) => {
  const git_url = `${GIT_BASE}${opts.using}.git`;

  log.info(`Cloning from ${git_url}`);

  try {
    await fs.access(target);
    log.error(`Target ${target} exists. Won't install into it.`);
    process.exit(1);
  } catch(error) {
    // access is stupid, it throws an exception but we want the negative response as a positive outcome
    exec_i(`git clone --depth 1 ${git_url} ${target}`);
  }

  // normalize the temp directory
  const temp_dir = path.join(opts.template, '');
  const temp_files = glob(path.join(target, temp_dir, "/**/*"));

  log.info("Copying template files...");

  // copy all of the template files to the destination
  for(let f of temp_files) {
    // kind of dumb way to trim the middle of the path out
    const f_normal = path.join(f, ''); // this fixes glob's using / on windows
    // use simple string replace to remove the template part
    const copy_to = f_normal.replace(`${temp_dir}`, '').replace('\\\\', '\\');
    mkdir_to(copy_to);
    copy(f_normal, copy_to); // we can add a template thing here
    log.debug(`${f_normal} ---> ${copy_to}`);
  }

  // remove the .git directory
  if(opts.keepGit) {
    log.warn("Keeping the .git directory, so be sure to delete it if you want to do your own work.");
  } else {
    if(process.platform === "win32") {
      exec_i(`rd /s /q ${path.join(target, ".git")}`);
    } else {
      exec_i(`rm -rf ${path.join(target, ".git")}`);
    }
  }
}