/** log类 */

export default class LogUtil {

    private static openLog = false
    private static Tag = "TCSG "

    /** 遍历打印obj属性值 
     * @param tag  名称
     * @param obj   要遍历的对象
     * @param level 0 普通 1 警告 2 报错
    */
    static logV(tag, obj, level = 0) {
        if (!this.openLog) {
            return
        }

        if (obj == null || obj == undefined) {
            this.logLevel(level, '[[' + this.Tag + tag + ']]' + " !! " + obj)
            return
        }

        if (typeof obj === "number" || typeof obj === "string" || typeof obj === "boolean") {
            this.logLevel(level, '<' + this.Tag + tag + '>   ' + " " + obj)
            return
        }

        let description = this.logObj(obj)
        this.logLevel(level, '[' + this.Tag + tag + ']   ' + ' \n' + description)
    }

    private static logObj(obj, space = 1) {
        let description = ''
        if (obj == null || obj == undefined) {
            description += this.getSpaceStr(space) + obj + '\n';
        }
        else {
            for (var i in obj) {
                var property = obj[i];
                if (typeof property === 'object') {
                    description += this.getSpaceStr(space) + i + " = " + '\n';
                    description += this.logObj(property, space + 1)
                }
                else {
                    description += this.getSpaceStr(space) + i + " = " + property + '\n';
                }
            }
        }

        return description
    }

    private static getSpaceStr(loop: number): string {
        let str = ""
        if (loop > 0) {
            for (let i = 0; i < loop; i++) {
                str += "      "
            }
            return str
        }
        return str
    }

    /** 输出log样式
     * @param level 级别 0 普通 1 警告 2 报错
     * @param str   打印信息
     */
    private static logLevel(level, str) {
        switch (level) {
            case 0:
                console.log(str)
                break;
            case 1:
                console.warn(str)
                break;
            case 2:
                console.error(str)
                break;
        }
    }
}