import { commands } from "coc.nvim";
import * as path from "path";
import * as util from "util";
import { Disposable } from "vscode-languageserver-protocol";
import Uri from "vscode-uri";

export function resourcePath(...paths: string[]): string {
  return path.join(__dirname, "..", "resources", ...paths);
}

export function unwrap<T>(value: T|undefined, tip = "?"): T {
  if (value === undefined)
    throw new Error("undefined " + tip);
  return value;
}

export function disposeAll(items: Disposable[]): any[] {
  return items.reverse().map((d) => d.dispose());
}

export function normalizeUri(u: string): string {
  return Uri.parse(u).toString(true);
}

export function setContext(name: string, value: any): void {
  commands.executeCommand("setContext", name, value);
}

export function dedent(templateStrings: TemplateStringsArray, ...args: any[]) {
  const strings = templateStrings.map((value) => value.replace(/\r?\n[ ]*$/, '\n'));
  let result = strings[0];
  for (let i = 0; i < args.length; i++) {
    result += args[i] + strings[i + 1];
  }
  return result;
}

const setTimeoutPromised = util.promisify(setTimeout);

export async function wait(millisecs: number) {
  return setTimeoutPromised(millisecs);
}