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import {CAUSE} from "./constants";import AdjusterInterface from "./AdjusterInterface";
/** * adjuster for string */export default class StringAdjuster extends AdjusterInterface{	/**	 * constructor	 */	constructor()	{		super();
		/** @type {?string} */		this._default = null;		/** @type {boolean} */		this._allowEmpty = false;		/** @type {?string} */		this._valueOnEmpty = null;		/** @type {string[]} */		this._in = null;		/** @type {?int} */		this._minLength = null;		/** @type {?int} */		this._maxLength = null;		/** @type {boolean} */		this._adjustMaxLength = false;		/** @type {?RegExp} */		this._pattern = null;	}
	/**	 * set default value; enable to omit	 * @param {string} value default value	 * @return {StringAdjuster}	 */	default(value)	{		this._default = value;		return this;	}
	/**	 * allow empty string (NOT undefined)	 * @param {?string} [value=null] value on empty	 * @return {StringAdjuster}	 */	allowEmpty(value = null)	{		this._allowEmpty = true;		this._valueOnEmpty = value;		return this;	}
	/**	 * accept only specified values	 * @param {...string} values values to be accepted	 * @return {StringAdjuster}	 */	in(...values)	{		this._in = values;		return this;	}
	/**	 * set min-length	 * @param {int} length min-length; error if shorter	 * @return {StringAdjuster}	 */	minLength(length)	{		this._minLength = length;		return this;	}
	/**	 * set max-length	 * @param {int} length max-length	 * @param {boolean} [adjust=false] truncate if longer; default is ERROR	 * @return {StringAdjuster}	 */	maxLength(length, adjust = false)	{		this._maxLength = length;		this._adjustMaxLength = adjust;		return this;	}
	/**	 * specify acceptable pattern by regular expression	 * @param {RegExp} pattern acceptable pattern	 * @return {StringAdjuster}	 */	pattern(pattern)	{		this._pattern = pattern;		return this;	}
	/**	 * do adjust	 * @param {*} value value to be checked	 * @param {?_OnError} onError callback function on error	 * @return {string} adjusted value	 */	adjust(value, onError = null)	{		// omitted		if(value === undefined)		{			if(this._default === null)			{				const cause = CAUSE.REQUIRED;				return AdjusterInterface._handleError(onError, cause, value);			}			return this._default;		}
		let adjustedValue = String(value);
		if(this._in !== null)		{			if(!this._in.includes(adjustedValue))			{				const cause = CAUSE.IN;				return AdjusterInterface._handleError(onError, cause, value);			}			return adjustedValue;		}
		// empty string		if(adjustedValue.length === 0)		{			if(!this._allowEmpty)			{				const cause = CAUSE.EMPTY;				return AdjusterInterface._handleError(onError, cause, value);			}			return this._valueOnEmpty;		}
		if(this._minLength !== null && adjustedValue.length < this._minLength)		{			const cause = CAUSE.MIN_LENGTH;			return AdjusterInterface._handleError(onError, cause, value);		}		if(this._maxLength !== null && adjustedValue.length > this._maxLength)		{			if(!this._adjustMaxLength)			{				const cause = CAUSE.MAX_LENGTH;				return AdjusterInterface._handleError(onError, cause, value);			}			adjustedValue = adjustedValue.substr(0, this._maxLength);		}
		if(this._pattern !== null && !this._pattern.test(adjustedValue))		{			const cause = CAUSE.PATTERN;			return AdjusterInterface._handleError(onError, cause, value);		}
		return adjustedValue;	}}