package net.rustnotmc.loader;

/**
 * Which side of the game a mod is meant to run on.
 *
 * The loader runs on the client today, but the value is part of the descriptor
 * from the first release: a mod jar that says BOTH today must not need a format
 * change tomorrow when the loader moves to the server.
 */
public enum ModEnv {

    CLIENT,
    SERVER,
    BOTH;

    /** True when a mod declaring this env should load on the given side. */
    public boolean runsOn(ModEnv side) {
        if (side == null) {
            return false;
        }
        return this == BOTH || this == side;
    }

    /** The side we are running on right now. */
    public static ModEnv current() {
        return CLIENT;
    }

    /**
     * Parses the descriptor value. Unreadable input is treated as BOTH rather
     * than rejected: refusing to start because of one bad character is worse
     * than loading a mod that may then find itself unusable.
     */
    public static ModEnv parse(String raw) {
        if (raw == null) {
            return BOTH;
        }
        String v = raw.trim().toUpperCase();
        if (v.length() == 0) {
            return BOTH;
        }
        if (v.equals("CLIENT") || v.equals("CLIENT_ONLY") || v.equals("CLIENTONLY")) {
            return CLIENT;
        }
        if (v.equals("SERVER") || v.equals("SERVER_ONLY") || v.equals("SERVERONLY")) {
            return SERVER;
        }
        return BOTH;
    }
}