import lib from '../lib/lib';
import $ from 'jquery';

var exports = {};

exports.validateForm = validateForm;
exports.getFormData = getFormData;

function addFocus(input) {
    $(input).addClass("focus");
    if ($(input).hasClass('weui-input')) {
        $(input).parents('.weui-cell').addClass('weui-cell_warn');
    }
}

function removeFocus(input) {
    $(input).removeClass("focus");
    if ($(input).hasClass('weui-input')) {
        $(input).parents('.weui-cell').removeClass('weui-cell_warn');
    }
}

function initEvent() {
    $("body").on("click", ".focus", function() {
        removeFocus(this);
    });
}

initEvent();

/**
 * 检查参数并获取表单数据
 * selector：表单选择器
 */
function getFormData(selector) {
    var data = {};
    var $input = $(selector).find('input, select, textarea');
    $input.removeClass("hover");
    for (var i = 0; i < $input.length; i++) {
        var $this = $($input[i]);
        var key = $input[i].name || $input[i].id;
        if (key) {
            var type = $this.attr("type");
            if (type == "checkbox") {
                data[key] = $this.prop("checked");
            } else if (type == 'radio') {
                data[key] = $('[name="' + $this.attr('name') + '"]:checked').val();
            } else if (type != 'submit' && type != 'button') {
                data[key] = $.trim($this.val());
            }
        }
    }

    return data;
}


function validateForm(selector) {
    var $input = $(selector).find('input, select, textarea');
    $input.removeClass("hover");
    for (var i = 0; i < $input.length; i++) {
        var $this = $($input[i]);
        if (!_validate($this)) {
            return false;
        }
    }

    return true;
}

function _validate($this) {
    var funcList = [
        _validateRequire,
        _validateLength,
        _validateRange,
        _validateReg,
        _validateType
    ];

    for (var i = 0; i < funcList.length; i++) {
        if (!funcList[i]($this)) {
            return false;
        }
    }

    return true;
}

// 字符串格式化
function _format(str) {
    if (arguments.length == 0) return null;
    var args = Array.prototype.slice.call(arguments, 1);
    return str.replace(/\{(\d+)\}/g, function(m, i){
        return args[i];
    });
}

function _getTitle($this) {
    var title = $this.attr('title');
    if (!title) {
        title = $this.parent().parent().find('.weui-label').text();
    }
    return title;
}

function _validateRequire($this) {
    if (!$this.attr('required')) {
        return true;
    }

    var required = $this.attr('required');
    var inputVal = $.trim($this.val());
    if (required && !inputVal) {
        lib.showTip("请输入" + _getTitle($this));
        addFocus($this);
        return false;
    }

    return true;
}

function _validateRange($this) {
    var range = $this.attr('data-range');
    var value = $.trim($this.val());
    if (!range || !value) {
        return true;
    }

    var reg = /(\d+),\s*(\d+|\+)*/;
    if (reg.test(range)) {
        var dataRange = range.match(reg);
        if (value < parseInt(dataRange[1])) {
            lib.showTip(_format('{1}不能少于{0}', dataRange[1], _getTitle($this)));
            addFocus($this);
            return false;
        } else if (parseInt(dataRange[2]) && value > parseInt(dataRange[2])) {
            lib.showTip(_format("{1}不能大于{0}", _getTitle($this), dataRange[2]));
            addFocus($this);
            return false;
        }
    }

    return true;
}

function _validateLength($this) {
    if (!$this.attr('data-length')) {
        return true;
    }

    var value = $.trim($this.val());
    // var length = strlen(value);
    var length = value.length;
    var reg = /(\d+),\s*(\d+|\+)*/;
    var dataLength = $this.attr('data-length');
    if (reg.test(dataLength)) {
        var dataRange = $this.attr('data-length').match(reg);
        if (length < parseInt(dataRange[1])) {
            lib.showTip(_format('请输入{0}个字以上的{1}', dataRange[1], _getTitle($this)));
            addFocus($this);
            return false;
        } else if (parseInt(dataRange[2]) && length > parseInt(dataRange[2])) {
            lib.showTip(_format("{0}不能超过{1}个字", _getTitle($this), dataRange[2]));
            addFocus($this);
            return false;
        }
    } else if (length != dataLength) {
        lib.showTip(_format("{0}应该为{1}个字", _getTitle($this), dataLength));
        addFocus($this);
        return false;
    }

    return true;
}


function _validateReg($this) {
    if (!$this.attr('data-reg')) {
        return true;
    }

    var reg = new RegExp($this.attr('data-reg'));
    var value = $.trim($this.val());
    if (reg.test(value)) {
        var msg = $this.attr('data-regMsg') || "不符合规范哦！";
        lib.showTip(_getTitle($this) + msg);
        addFocus($this);
        return false;
    }

    return true;
}

function _validateType($this) {
    if (!$.trim($this.val())) {
        return true;
    }

    var dataType = $this.attr('data-type');
    var typeList = dataType ? dataType.split('|') : [$this.attr("type")];
    var result = true;
    for (var i = 0, len = typeList.length; i < len; i++) {
        var type = typeList[i];
        if (_validateType2($this, type)) {
            return true;
        }
    }

    return false;
}

function _validateType2($this, type) {
    switch (type) {
        case 'email':
            return _validateMail($this);
        case 'tel':
            return _validateTel($this);
        case 'number':
            return _validateNum($this);
        default:
            return true;
    }
}

function _validateTel($this) {
    var value = $.trim($this.val());
    var reg = /^\d{11}$/;
    var strTip = "请输入正确的手机号码！";
    if (reg && !reg.test(value)) {
        lib.showTip(strTip);
        addFocus($this);
        return false;
    }

    return true;
}

function _validateNum($this) {
    var value = $.trim($this.val());
    var reg = /^\d+(\.\d+)*$/;
    var strTip = "请输入数字！";
    if (reg && !reg.test(value)) {
        lib.showTip(strTip);
        addFocus($this);
        return false;
    }

    return true;
}

function _validateMail($this) {
    var value = $.trim($this.val());
    var reg = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
    if (!reg.test(value)) {
        lib.showTip("请输入合法的Email地址！");
        addFocus($this);
        return false;
    }

    return true;
}

export default exports;