import { PluginObject } from 'vue'

export interface IOptions {
    keys: string[]
}

export const defaultOptions : IOptions = {
    keys: ['message', 'msg', 'errorMsg'],
}

// 过滤信息
export function filterMessage (v: any) : string {
    if (v === null) return ''
    if (typeof v !== 'object') return `${v}`
    const { keys } = defaultOptions
    for (let i = 0, len = keys.length; i < len; i++) {
        const key = keys[i]
        if (v[key] !== undefined) return v[key]
    }
    return JSON.stringify(v)
}

// 过滤日期
export function filterDate (v: string | Date | number = new Date(), fmt: string = 'yyyy-MM-dd hh:mm:ss') : string {
    if (typeof v === 'string') v = v.replace(/-/g, '/')
    const date = new Date(v);
    const o = {
        "M+": date.getMonth() + 1,
        "d+": date.getDate(),
        "h+": date.getHours(),
        "m+": date.getMinutes(),
        "s+": date.getSeconds(),
        "q+": Math.floor((date.getMonth() + 3) / 3),
        "S": date.getMilliseconds()
    };
    if (/(y+)/.test(fmt)) {
        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
    for (let k in o) {
        if (new RegExp("(" + k + ")").test(fmt)) {
            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
        }
    }
    return fmt;
}

// 剪切字符串
export function filterCutOut (v: string, max: number = 0): string {
    return v ? v.length > max ? `${v.substring(0, max)}...` : v : ''
}

// 过滤身份证号码
export function filterIDCard (v: string) : string {
    return v ? `${v.substring(0, 6)}********${v.substring(14)}` : ''
}

// 过滤银行卡号
export function filterBankCard (v: string) : string {
    return v ? `${new Array(v.length - 3).join('*')}${v.substring(v.length - 4)}`.replace(/(.{4})/g, '$1 ') : ''
}

// 过滤手机号
export function filterPhone (v: string) : string {
    return v ? `${v.substring(0, 3)} **** ${v.substring(7)}` : ''
}

// 过滤姓名
export function filterName (v: string) : string {
    if (!v) return ''
    const length = v.length
    if (length === 1) return v
    if (length === 2) return `${v.substring(0, 1)}*`
    return `${v.substring(0, 1)}${new Array(length - 1).join('*')}${v.substr(-1)}`
}

// 只能是汉字和字母
export function filterLetter (v: string) : string {
    if (!v) return ''
    return v.replace(/[^A-Za-z\u4e00-\u9fa5]*/g, '');
}

// 只能是数字和字母
export function filterNumberLetter (v: string) : string {
    if (!v) return ''
    return v.replace(/[^A-Za-z\d]*/g, '');
}

// 过滤emoji
export function filterEmoji (v: string) : string {
    if (!v) return ''
    const ranges = [
        '\uD83C[\uDF00-\uDFFF]',
        '\uD83D[\uDC00-\uDE4F]',
        '\ud83d[\ude80-\udeff]',
        '[\uD800-\uDBFF]',
        '[\uDC00-\uDFFF]',
        '[^\u0020-\u007E\u00A0-\u00BE\u2E80-\uA4CF\uF900-\uFAFF\uFE30-\uFE4F\uFF00-\uFFEF\u0080-\u009F\u2000-\u201f\u2026\u2022\u20ac\r\n]',
    ]
    return v.replace(new RegExp(ranges.join('|'), 'g'), '')
}

// 替换字符串里面的回车换行
export function filterCRLF (v: string) : string {
    return v ? v.replace(/\r|\n/ig, '<br/>') : ''
}

// 过滤金额 按元
export function filterAmount (s, divisor = 1) {
    const money = parseFloat(s)
    if (money) {
        s = (money / divisor).toFixed(2) + ""
        let l = s.split(".")[0].split("").reverse()
        let r = s.split(".")[1]
        let t = ""
        l.forEach((ll, key) => {
            t += l[key] + ((key + 1) % 3 == 0 && (key + 1) != l.length ? "," : "")
        })
        return t.split("").reverse().join("") + "." + r
    } else if (s == 0) {
        return '0.00'
    } else {
        return '---'
    }
}

// 过滤金额 按分
export function filterAmountCent (v) {
    return filterAmount(v, 100)
}


export const filters = {
    filterMessage,
    filterCutOut,
    filterIDCard,
    filterBankCard,
    filterPhone,
    filterName,
    filterLetter,
    filterEmoji,
    filterDate,
    filterCRLF,
    filterAmount,
    filterAmountCent,
}

const Filters: PluginObject<IOptions> = {
    install (Vue, options ) {
        this.setDefaultOptions(options)
        Object.keys(filters).forEach(id => Vue.filter(id, filters[id]))
        Vue.prototype.$filters = filters
    },
    // 设置默认配置
    setDefaultOptions (options?: IOptions) {
        Object.assign(defaultOptions, options)
    },
}

export default Filters