import * as fs from "fs";
import * as path from "path";
import { execSync } from "child_process";

export const getFileName = (name: string): string => path.basename(name, path.extname(name))
export const getFileExt = (name: string): string => name.slice((Math.max(0, name.lastIndexOf(".")) || Infinity) + 1)

export const readFileSync = (path: string) => fs.readFileSync(path, 'utf8');
export const writeFileSync = (path: string, data: any) => fs.writeFileSync(path, data);
export const readDirSync = (path: string): string[] => fs.readdirSync(path);
export const isPathExistsSync = (path: string): boolean => fs.existsSync(path);
export const getFileSizeInKilobyte = (path: string): number => fs.statSync(path).size / 1000;

function execRename(command: string, cwd: string) {
    console.log(`Running command ${command}`);
    execSync(command, {encoding: "utf-8", cwd: cwd});
}

function gitMoveCommand(oldName: string, newName: string): string {
    return `git mv ${oldName} ${newName}-temp && git mv ${newName}-temp ${newName}`;
}

export function gitMove(path: string, oldName: string, newName: string) {
    console.log(`Renaming file or folder at path ${path}: ${oldName} => ${newName}`);
    execRename(gitMoveCommand(oldName, newName), path);
}

export function findFiles(base: string, ext: string, files: string[] = [], result: string[] = []): string[] {
    files = fs.readdirSync(base) || files;
    result = result || result;

    files.forEach(file => {
        var newbase = path.join(base, file);
        if (fs.statSync(newbase).isDirectory()) {
            result = findFiles(newbase, ext, fs.readdirSync(newbase), result);
        } else {
            if (file.substr(-1*(ext.length+1)) == '.' + ext) {
                result.push(newbase);
            }
        }
    });
    return result;
 }