#!/usr/bin/env rdmd
import std.stdio;
import std.file;
import std.algorithm.iteration;
import std.regex;
import std.array;
import std.typecons;

void move(string subfolder, string filename) {
    if (!subfolder.exists) {
        mkdir(subfolder);
    }
    auto target = subfolder ~ "/" ~ filename;
    rename(filename, target);
}

void main() {
    static ss = ctRegex!(`^\w+SS\w+\.avi$`);

    dirEntries(getcwd, SpanMode.shallow)
        .filter!(a => a.isFile)
        .map!(a => std.path.baseName(a.name))
        .filter!(a => !a.matchFirst(ss).empty)
        .map!(a => tuple(a.splitter(`SS`).front, a))
        .each!(a => move(a.expand));
}