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let $body;
let $head;
const Cookies = require('js-cookie')

const scrollIntoViewOptions = {
    behavior: "instant",
//    block: "start",
//    inline: "start"
}
const navbarHeight = 80;
const scrollIntoView = (el) => {
    el.scrollIntoView(scrollIntoViewOptions)
    /*
    if ((window.innerHeight + window.scrollY) <= document.body.offsetHeight - navbarHeight ) {
        window.scrollBy(0, -navbarHeight )
    }
    */
}

window.gitlist.scrollIntoView = scrollIntoView;

/*
const regExpEmail = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

window.gitlist.validate = {
    email: (email) => {
        return regExpEmail.test(String(email));
    }
}
*/

window.gitlist.ajaxErrorHandler = (e) => {
    $.snackbar({
        htmlAllowed: true,
        content: e.message,
        timeout: window.gitlist.snapckbarLongTimeout,
    })
    console.error(e);
}

window.gitlist.getPaths = () => {
    const currentUrl = new URL(window.location)
    if (window.gitlist.basepath !== '') {
        currentUrl.pathname = currentUrl.pathname.substring(window.gitlist.basepath.length)
    }
    let paths = currentUrl.pathname.split('/');
    return paths;
}

window.gitlist.clearInput = (name) => {
    const input = $(`[name=${name}]`)
    input.val('')
    Cookies.set(`p3x-gitlist-${name}`, '', window.gitlist.cookieSettings)
    input.focus()
}

window.gitlist.setInputQuery = (name) => {
    const input = $(`[name=${name}]`)
    Cookies.set(`p3x-gitlist-${name}`, input.val(), window.gitlist.cookieSettings)
}

window.gitlist.isDark =(theme = window.gitlist.getActualTheme()) => {
    for(let i = 0; i < window.gitlist.dark.length; i++ ) {
        if (window.gitlist.dark[i] === theme) {
            return true;
        }
    }
    return false;
}

window.gitlist.cookieSettings = {
    path: gitlist.basepath === '' ? '/' : gitlist.basepath,
    expires: 3650
}


window.gitlist.getActualTheme = (theme = window.gitlist.getThemeCookie()) => {
    const actualTheme = theme.split('-')[1]
    return actualTheme;
}

window.gitlist.getActualThemeCodemirror = () => {
    if (window.gitlist.isDark(window.gitlist.getActualTheme())) {
        return window.gitlist.codemirrorTheme.dark;
    } else {
        return window.gitlist.codemirrorTheme.light;
    }
}

let currentTheme;
let setTimeoutSwitch;
window.gitlist.setTheme = () => {
    if ($body === undefined) {
        setTimeout(() => {
            window.gitlist.setTheme()
        })
        return;
    }
    const theme = window.gitlist.getActualTheme();
//    console.log('theming', 'currenTheme', currentTheme, 'new theme', theme);
    if (theme === currentTheme) {
//        console.log('same theme')
        return;
    }

    const diffButtons = $('.p3x-gitlist-diff-button.active');
    //console.log(diffButtons)
    for(let diffButton of diffButtons ) {
        diffButton.click();
    }

    const switchThemeActually = () => {
        currentTheme = theme;

        /*
        const themeBlameCodeMirror  = (options) => {
            const {  theme } = options
            for(let cm of window.gitlist.blameCodeMirror) {
                cm.setOption("theme", theme);
            }
        }
        */

        let bodyAddClass
        let bodyRemoveClass
        let codeMirrorTheme
        if (window.gitlist.isDark(theme)) {
            bodyAddClass = 'p3x-gitlist-dark'
            bodyRemoveClass = 'p3x-gitlist-light'
            codeMirrorTheme = window.gitlist.codemirrorTheme.dark
        } else {
            bodyAddClass = 'p3x-gitlist-light'
            bodyRemoveClass = 'p3x-gitlist-dark'
            codeMirrorTheme = window.gitlist.codemirrorTheme.light

        }

        $body.addClass(bodyAddClass)
        $body.removeClass(bodyRemoveClass)
        if (gitlist.viewer !== undefined) {
            gitlist.viewer.setOption("theme", codeMirrorTheme);
        }
        if (gitlist.blameCodeMirror !== undefined) {
            gitlist.blameCodeMirror.setOption("theme", codeMirrorTheme);
        }


        window.gitlist.networkRedraw();
        window.gitlist.treegraph();
//    if (window.gitlist.lastloadSpan !== undefined && window.gitlist.lastloadSpan > 1000) {
        clearTimeout(setTimeoutSwitch)
        setTimeoutSwitch = setTimeout(() => {
            $('.p3x-gitlist-overlay').remove();
        }, 250)

    }
    //    console.log('p3x-gitlist switching theme')
//    }

    if (diffButtons.length > 0) {
        $.snackbar({
            content: `We hid the shown diffs, to make the theme switching faster.`,
            timeout: window.gitlist.snapckbarLongTimeout,
        });
        window.scrollTo(0, 0);
        setTimeout(switchThemeActually, 250)
    } else {
        switchThemeActually()
    }


}
const pushHash = (hash) => {
    if(history.pushState) {
        const pushState = location.pathname + hash;
        history.pushState(null, null, pushState);
    }
    else {
        location.hash = hash;
    }

}
window.gitlist.pushHash = pushHash;

global.gitlist.scrollHash = function(element, event) {
    const url = new URL(element.href)
    const id = url.hash.substring(1)
    const elfind = document.getElementById(id + '-parent')
    const elfind2 = document.getElementById(id)
    if (elfind === null && elfind2 === null) {
        return true;
    }
    scrollIntoView(elfind || elfind2);

    if (event !== undefined) {
        event.preventDefault()
        pushHash(url.hash)
    }
    return false;
}

$(function () {
    currentTheme = window.gitlist.getActualTheme(window.gitlist.loadTheme)

    $('.dropdown-toggle').dropdown();
    $('[data-toggle="tooltip"]').tooltip()

    $body = $('body');
    $head = $('head')

//    let waiter = 500;
//    let timeout = 500;
    /*
    Object.values(window.gitlist.themes).forEach(css => {
//        setTimeout(() => {
        $head.append(`<link as="style" rel="prefetch" href="${css}">`)
//        }, timeout)
//        timeout += waiter;
    })
    */

    const es = document.getElementsByTagName('a')
    for(let i=0; i<es.length; i++){
        es[i].addEventListener('click', function(e) {
            const href = e.target.getAttribute('href');
            if (href === null) {
                return;
            }
            if (href.startsWith('#')) {
                e.preventDefault()
                const hash = href.substring(1);
                const el = document.getElementById(hash);
                if (el === null) {
                    return;
                }
                scrollIntoView(el);
                pushHash(href)
            }
        })
    }

    /*
    $('.search').click(function (e) {
        e.stopPropagation();
    });
    */

    if (window.gitlist.lastload !== undefined) {
        window.gitlist.lastloadSpan = Date.now() - window.gitlist.lastload;
    }
    $('.p3x-gitlist-overlay').remove();
    global.gitlist.scrollHash(location)


    window.gitlist.networkRedraw();
    window.gitlist.treegraph();
    gitlist.setTheme()
});