import Singleton from "../../patterns/Singleton";

const FUNCTION_IDENTIFIER = "@"
export class MybatisRegExpClass extends Singleton{
    // public functionParameter:RegExp = new RegExp(`(?<=\\()(.*?)(?=\\))`, 'g');
    // public functionParameter:RegExp = new RegExp(`(?<=\\()(.*)(?=\\))`, 'g');
    // public functionName:RegExp = new RegExp('(?<='+FUNCTION_IDENTIFIER+')(.*?)(?=\\()', 'g');
    // public functionStatement:RegExp = new RegExp('[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?(^|[^\\w]|\\b)((?<='+FUNCTION_IDENTIFIER+')(.*?)(?=\\)))($|[^\\w]|\\b)[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?', 'g');

    public isDate: RegExp = new RegExp(/^(?:(?:1[6-9]|[2-9]\d)?\d{2})(?:(?:(\/|-|\.)(?:0?[13578]|1[02])\1(?:31))|(?:(\/|-|\.)(?:0?[13-9]|1[0-2])\2(?:29|30)))$|^(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00)))(\/|-|\.)0?2\3(?:29)$|^(?:(?:1[6-9]|[2-9]\d)?\d{2})(\/|-|\.)(?:(?:0?[1-9])|(?:1[0-2]))\4(?:0?[1-9]|1\d|2[0-8])$/gm);
    public isNumber: RegExp = new RegExp('^[0-9]*$', 'g')
    public isStringNotEmpty: RegExp = new RegExp('([a-zA-Z])', 'g');
    public getStatementToken = new RegExp(`[a-zA-Z0-9ㄱ-ㅎㅏ-ㅣ가-힣_.@-]+`, 'g');

    public commentDeleteReg = new RegExp('/\\*([^*]|[\\r\\n]|(\\*+([^*/]|[\\r\\n])))*\\*+/', 'g');
    public removeCommaRepeated2 = new RegExp('(,)(,|\\s){2,}', 'g');
    public removeCommaFirstExist = new RegExp('(^)([\\s]*?)(,)', 'g');
    public removeCommaLastExist = new RegExp('(,)([\\s]*?)($)', 'g');

    public replaceCdata = new RegExp('(<!\\[CDATA\\[)([\\s\\S]*?)(\\]\\]>)', 'g');

    public flatText =/^\s*$/g;

    public parameterSearchReg(change: string) {
            // return new RegExp('(\\' + change + '\\{[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?[a-zA-Z0-9._,=\\$\\s]+[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?\\})', 'g');
        return new RegExp('\\'+change+'\\{[-a-zA-Z0-9._,=\\$\\s\\+\\*\\b\\@\\(\\)\\{\\}\\\'\\"\\[\\]\\&\\|\\>\\<\\%\\^\\$\\~\\!]+\\}', 'g');
    }

    public parameterChangeReg(change: string, targetParam: string) {
        return new RegExp('\\' + change + '{' + targetParam + '}', 'g');
    }


    public findOperator(str: string) {
        // return new RegExp('[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?(^|[^\\w]|\\b)(' + str + ')($|[^\\w\\.\\_\\,\\=\\$\\s\\+\\*\\b\\@\\(\\)\\{\\}\\'\\"\\[\\]\\&\\|\\>\\<\\%\\^\\~\\!]|\\b)[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?', 'g')
        return new RegExp('[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?(' + str + ')($|[^\\w\\.\\_\\,\\=\\$\\s\\+\\*\\b\\@\\(\\)\\{\\}\\\'\\\"\\[\\]\\&\\|\\>\\<\\%\\^\\~\\!]|\\b)[\\s]?[\\s]?[\\s]?[\\s]?[\\s]?', 'g')
    }

    public replaceQueryToken(str: string) {
        return new RegExp('(' + str + ')', 'g')
    }

    public removePrefixOverrides(str:string, flag:string)
    {
        return new RegExp('(^)([\\s]*?)(' + str + ')', flag);
    }

    public removePostfixOverrides(str:string, flag:string)
    {
        return new RegExp('(' + str + ')([\\s]*?)($)', flag);
    }

    public getCommaBefore(str:string, flag:string)
    {
        return new RegExp('(,)([\\s]*?)('+str+')', flag);
    }
}

export const MybatisRegExp = MybatisRegExpClass.getInstance();