package io.github.lonamiwebs.overgram.parser;

import java.util.ArrayList;
import java.util.List;

public class TLObject {

    public final String fullname;
    public final String namespace;
    public final String name;
    public final int code;
    public final List<TLArg> args;
    public final String type;

    private TLObject(final String fullname, final int code, final List<TLArg> args, final String type) {
        this.fullname = fullname;
        this.code = code;
        this.args = args;
        this.type = type;

        final String[] nsName = fullname.split("\\.");
        if (nsName.length == 1) {
            namespace = "";
            name = nsName[0];
        } else {
            namespace = nsName[0];
            name = nsName[1];
        }
    }

    public static String toCamelCase(final String string) {
        final int dot = string.lastIndexOf(".");
        return string.substring(0, dot + 1)
                + string.substring(dot + 1, dot + 2).toUpperCase()
                + string.substring(dot + 2);
    }

    public static TLObject fromString(String string) {
        String[] tmp;
        String name;
        String code;
        String type;

        tmp = string.split("\\s+=\\s+");
        string = tmp[0];
        type = tmp[1];

        tmp = string.split(" ", 2);
        name = tmp[0];
        string = tmp.length == 1 ? "" : tmp[1];

        tmp = name.split("#");
        name = tmp[0];
        code = tmp.length == 1 ? "0" : tmp[1];

        final List<TLArg> args = new ArrayList<>();
        if (!string.isEmpty()) {
            for (final String part : string.split(" ")) {
                args.add(TLArg.fromString(part));
            }
        }

        return new TLObject(name, Integer.parseUnsignedInt(code, 16), args, type);
    }

    @Override
    public String toString() {
        final StringBuilder builder = new StringBuilder();
        builder.append(fullname);
        builder.append('#');
        builder.append(Integer.toString(code, 16));
        for (final TLArg arg : args) {
            builder.append(' ');
            builder.append(arg.toString());
        }
        builder.append(" = ");
        builder.append(type);
        return builder.toString();
    }
}