import {ValidateRules} from './FormItem';
import {isEmpty} from 'lodash';

export function applyRule(rule: ValidateRules, data: any): { valid: boolean; message: string; } {
    if (rule.len && !(String(data).length === rule.len)) {
        return {
            valid: false,
            message: rule.message || '长度不满足要求'
        };
    }

    if (rule.max && Number(data) > rule.max) {
        return {
            valid: false,
            message: rule.message || `不能大于${rule.max}`
        };
    }

    if (rule.min && Number(data) < rule.min) {
        return {
            valid: false,
            message: rule.message || `不能小余${rule.min}`
        };
    }

    if (rule.maxLength && String(data).length > rule.maxLength) {
        return {
            valid: false,
            message: rule.message || `长度不能大于${rule.maxLength}`
        };
    }

    if (rule.minLength && String(data).length < rule.minLength) {
        return {
            valid: false,
            message: rule.message || `长度不能小余${rule.minLength}`
        };
    }

    if (rule.required) {
        let isValid = true;

        if (typeof data === 'string') {
            if (rule.whitespace) {
                data = data.trim();
            }

            if (data.length === 0) {
                isValid = false;
            }
        }

        if (data === null || data === undefined) {
            isValid = false;
        }

        if (typeof data === 'object' && data !== null) {
            isValid = !isEmpty(data);
        }

        if (!isValid) {
            return {
                valid: false,
                message: rule.message || '不能为空'
            };
        }
    }

    if (rule.pattern && !new RegExp(rule.pattern).test(data)) {
        return {
            valid: false,
            message: rule.message || '输入不满足规则'
        };
    }

    return {
        valid: true,
        message: ''
    };
}