var fs = require("fs");
var nodePath = require("path");

var Module = require("module").Module;
var oldResolveFilename = Module._resolveFilename;

var isDebug = require("../../env").isDebug;

var rootDir = nodePath.join(__dirname, "../../");
var markoDir = isDebug
    ? nodePath.join(rootDir, "src")
    : nodePath.join(rootDir, "dist");

var markoInstalledDir = nodePath.join(rootDir, "node_modules/marko");
if (fs.existsSync(markoInstalledDir)) {
    fs.renameSync(
        markoInstalledDir,
        nodePath.join(rootDir, "node_modules/~marko")
    );
}

Module._resolveFilename = function(request, parent, isMain) {
    if (request.charAt(0) !== ".") {
        if (
            request === "marko/components" ||
            request === "marko/jquery" ||
            request === "marko/legacy-components" ||
            request === "marko/ready" ||
            request === "marko/env" ||
            request.startsWith("marko/dist/") ||
            request.startsWith("marko/src/") ||
            request.startsWith("marko/helpers/")
        ) {
            request = nodePath.join(
                rootDir,
                request.substring("marko/".length)
            );
        } else if (request === "marko") {
            request = rootDir;
        } else if (request.startsWith("marko/")) {
            request = nodePath.join(
                markoDir,
                request.substring("marko/".length)
            );
        }
    }

    return oldResolveFilename.call(this, request, parent, isMain);
};