//================================================================
/**
 * @packageDocumentation
 * @module std
 */
//================================================================
import { RuntimeError } from "./RuntimeError";

import { ErrorCode } from "./ErrorCode";
import { ErrorCategory } from "./ErrorCategory";

/**
 * System Error.
 *
 * @author Jeongho Nam - https://github.com/samchon
 */
export class SystemError extends RuntimeError {
    protected code_: ErrorCode;

    /* ---------------------------------------------------------
        CONSTRUCTORS
    --------------------------------------------------------- */
    /**
     * Initializer Constructor.
     *
     * @param code An error code.
     * @param message A detailed error message.
     */
    public constructor(code: ErrorCode, message?: string);

    /**
     * Construct from references.
     *
     * @param val Identnfier of an error code in *category*.
     * @param category An error category.
     * @param message A detailed error message.
     */
    public constructor(val: number, category: ErrorCategory, message?: string);

    public constructor(...args: any[]) {
        super("");

        if (args.length >= 2 && typeof args[0].valueOf() === "number") {
            const val: number = args[0];
            const category: ErrorCategory = args[1];

            this.code_ = new ErrorCode(val, category);
            this.message = args[2];
        } else {
            this.code_ = args[0];
            this.message = args[1];
        }
    }

    /* ---------------------------------------------------------
        ACCESSORS
    --------------------------------------------------------- */
    /**
     * Get error code.
     *
     * @return The error code.
     */
    public code(): ErrorCode {
        return this.code_;
    }

    /**
     * @inheritDoc
     */
    public toJSON(): object {
        return {
            ...super.toJSON(),
            code: this.code_.toJSON(),
        };
    }
}