// imported from https://github.com/galkn/parseuri
/**
 * Parses an URI
 *
 * @author Steven Levithan <stevenlevithan.com> (MIT license)
 * @api private
 */
const re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/

const parts = [
    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
]

export function parse(str) {
    const src = str,
        b = str.indexOf('['),
        e = str.indexOf(']')

    if (b != -1 && e != -1) {
        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length)
    }

    let m = re.exec(str || ''),
        uri = {} as any,
        i = 14

    while (i--) {
        uri[parts[i]] = m[i] || ''
    }

    if (b != -1 && e != -1) {
        uri.source = src
        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':')
        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':')
        uri.ipv6uri = true
    }

    uri.pathNames = pathNames(uri, uri['path'])
    uri.queryKey = queryKey(uri, uri['query'])

    return uri
}

function pathNames(obj, path) {
    const regx = /\/{2,9}/g,
        names = path.replace(regx, "/").split("/")

    if (path.slice(0, 1) == '/' || path.length === 0) {
        names.splice(0, 1)
    }
    if (path.slice(-1) == '/') {
        names.splice(names.length - 1, 1)
    }

    return names
}

function queryKey(uri, query) {
    const data = {}

    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
        if ($1) {
            data[$1] = $2
        }
    })

    return data
}