!function ($, doc) {

    var each = function (arr, fn) {
        for (let i = 0; i < arr.length; i++) {
            fn(arr[i], i)
        }
    }

    var amSwitch = {}

    var _toggleCallback

    var toggle = function (elm) {
        var isActive = elm.classList.contains('am-active')
        if (isActive) {
            elm.classList.remove('am-active')
        } else {
            elm.classList.add('am-active')
        }
        return {
            id: elm.dataset['switch'],
            isActive: elm.classList.contains('am-active')
        }
    }

    var handleEvent = function (e) {
        var disabled = this.classList.contains('am-disabled')
        if (disabled)
            return
        switch (e.type) {
            case 'click':
                var event = toggle(this)
                _toggleCallback && _toggleCallback.bind(this)(event)
                break;
            default:
                break;
        }
    }

    var _init = function () {
        var switches = doc.querySelectorAll('.am-switch')
        each(switches, function (elm, i) {
            if (!elm.dataset['switch']) {
                elm.dataset['switch'] = i
            }
            elm.addEventListener('click', handleEvent)
            elm.handle = elm.querySelector('.am-switch-handle')
        })
    }

    _init()

    amSwitch.toggle = function (toggleFn) {
        _toggleCallback = toggleFn
    }

    amSwitch.val = function (id) {
        var elms = doc.querySelectorAll('.am-switch[data-switch="' + id + '"]')
        if (elms && elms.length > 0) {
            return elms[0].classList.contains('am-active')
        } else {
            return false
        }
    }
    $.amSwitch = amSwitch
}(window, document)