(function () {
    'use strict';

    // http://loopj.com/2010/06/12/simple-way-to-extract-get-params-from-a-javascript-script-tag/
    var getParams = function (script_name) {
        // Find all script tags
        var scripts = document.getElementsByTagName("script");

        // Look through them trying to find ourselves
        for (var i = 0; i < scripts.length; i++) {
            if (scripts[i].src.indexOf("/" + script_name) > -1) {
                // Get an array of key=value strings of params
                var pa = scripts[i].src.split("?").pop().split("&");

                // Split each key=value into array, the construct js object
                var p = {};
                for (var j = 0; j < pa.length; j++) {
                    var kv = pa[j].split("=");
                    p[kv[0]] = kv[1];
                }
                return p;
            }
        }
        // No scripts match
        return {};
    },
        _detect = getParams('detecting.js').d,
        _redirectDir = getParams('detecting.js').r || '',
        _bRelativePath = _redirectDir.match(/^\.\//) || false,
        _char = '/',
        _ua = navigator.userAgent || navigator.vendor || window.opera,
        _locationPath = location.pathname,
        _pathArry = _locationPath.split(_char),
        _commonRegex = /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(_ua.substr(0, 4)),
        _isMobile = (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(_ua) || _commonRegex),
        _isMobileAndTablet = (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(_ua) || _commonRegex), // Reference http://stackoverflow.com/questions/11381673/detecting-a-mobile-browser
        generateRedirectURL = function (_type) {
            var _url;
            _pathArry.splice(_pathArry.indexOf('sp'), 1);

            // リダイレクトURLの指定がない&SPは頭にSPを追加
            if (!_redirectDir && _type === 'sp') {
                return '/sp' + _locationPath;
            }

            // リダイレクトURLの指定がない&PCは頭からSPを削除
            if (!_redirectDir && _type === 'pc') {
                return _pathArry.join(_char);
            }

            // リダイレクトURLの指定がある && 相対パス
            if (_redirectDir && _bRelativePath) {
                return _locationPath + _redirectDir;
            }

            // リダイレクトURLの指定がある && 絶対パス
            if (_redirectDir && !_bRelativePath) {
                return _redirectDir;
            }
        };

    switch (_detect) {
        case 'pc':
            // PCサイト

            // SP or TBで見てる
            if (_isMobileAndTablet) {
                location.href = generateRedirectURL('sp');
            }
            break;
        case 'pc-tb':
            // PC & TBサイト

            //スマホで見てる
            if (_isMobile) {
                location.href = generateRedirectURL('sp');
            }
            break;
        case 'sp':
            // SPサイト

            // SP以外でみてる
            if (!_isMobile) {

                location.href = generateRedirectURL('pc');
            }
            break;
        case 'sp-tb':
            // SP & TBサイト

            // SP,TB以外でみてる
            if (!_isMobileAndTablet) {
                location.href = generateRedirectURL('pc');
            }
            break;
    }
})();