var browser: Browser = browser || chrome;

const PENDING_SUBMISSIONS = ':PENDING_SUBMISSIONS'
const MIGRATION = ':MIGRATION'

const CURRENT_VERSION = 100025;

const badIdentifiersReasons: { [id: string]: BadIdentifierReason } = {};
const badIdentifiers: { [id: string]: true } = {};

// If a user labels one of these URLs, they're making a mistake. Ignore the label.
// This list includes:
// * Social networks that are not supported (SN)
// * System pages of supported social networks
// * Archival and link shortening sites. (AR)
// * Reddit bots.
const badIdentifiersArray = [
    'archive.is=AR',
    'archive.org=AR',
    'ask.fm=SN',
    'assets.tumblr.com',
    'bing.com',
    'bit.ly',
    'blogspot.com',
    'change.org',
    'chrome.google.com',
    'curiouscat.me=SN',
    'deviantart.com=SN',
    'discord-store.com=SN',
    'discord.gg=SN',
    'discordapp.com=SN',
    'disqus.com',
    'docs.google.com',
    'drive.google.com',
    'duckduckgo.com',
    'en.wikipedia.org',
    'en.wikiquote.org',
    'etsy.com=SN',
    'facebook.com',
    'facebook.com/a',
    'facebook.com/ad_campaign',
    'facebook.com/ads',
    'facebook.com/advertising',
    'facebook.com/ajax',
    'facebook.com/bookmarks',
    'facebook.com/browse',
    'facebook.com/buddylist.php',
    'facebook.com/bugnub',
    'facebook.com/business',
    'facebook.com/comment',
    'facebook.com/composer',
    'facebook.com/connect',
    'facebook.com/docs',
    'facebook.com/donate',
    'facebook.com/events',
    'facebook.com/findfriends',
    'facebook.com/friends',
    'facebook.com/fundraisers',
    'facebook.com/games',
    'facebook.com/groups',
    'facebook.com/hashtag',
    'facebook.com/help',
    'facebook.com/home.php',
    'facebook.com/instantgames',
    'facebook.com/intl',
    'facebook.com/jobs',
    'facebook.com/l.php',
    'facebook.com/language.php',
    'facebook.com/legal',
    'facebook.com/like.php',
    'facebook.com/local_surface',
    'facebook.com/logout.php',
    'facebook.com/marketplace',
    'facebook.com/mbasic',
    'facebook.com/me',
    'facebook.com/media',
    'facebook.com/menu',
    'facebook.com/messages',
    'facebook.com/nfx',
    'facebook.com/notes',
    'facebook.com/notifications.php',
    'facebook.com/notifications',
    'facebook.com/nt',
    'facebook.com/page',
    'facebook.com/pages',
    'facebook.com/people',
    'facebook.com/permalink.php',
    'facebook.com/pg',
    'facebook.com/photo.php',
    'facebook.com/photo',
    'facebook.com/places',
    'facebook.com/policies',
    'facebook.com/privacy',
    'facebook.com/profile.php',
    'facebook.com/profile',
    'facebook.com/public',
    'facebook.com/rapid_report',
    'facebook.com/reactions',
    'facebook.com/salegroups',
    'facebook.com/search',
    'facebook.com/settings',
    'facebook.com/sharer.php',
    'facebook.com/shares',
    'facebook.com/stories',
    'facebook.com/story.php',
    'facebook.com/ufi',
    'facebook.com/watch',
    'flickr.com=SN',
    'goo.gl',
    'google.com',
    'googleusercontent.com',
    'http',
    'https',
    'i.imgur.com',
    'i.reddituploads.com',
    'imdb.com=SN',
    'imgur.com',
    'instagram.com=SN',
    'itunes.apple.com=SN',
    'ko-fi.com=SN',
    'linkedin.com=SN',
    'mail.google.com',
    'media.tumblr.com',
    'medium.com',
    'news.google.com',
    'patreon.com=SN',
    'paypal.com=SN',
    'paypal.me=SN',
    'play.google.com',
    'plus.google.com',
    'rationalwiki.org',
    'reddit.com',
    'reddit.com/r/all',
    'reddit.com/r/popular',
    'reddit.com/user/_youtubot_',
    'reddit.com/user/animalfactsbot',
    'reddit.com/user/anti-gif-bot',
    'reddit.com/user/areyoudeaf',
    'reddit.com/user/auto-xkcd37',
    'reddit.com/user/automoderator',
    'reddit.com/user/autotldr',
    'reddit.com/user/biglebowskibot',
    'reddit.com/user/bots_rise_up',
    'reddit.com/user/cheer_up_bot',
    'reddit.com/user/cheer-bot',
    'reddit.com/user/clickablelinkbot',
    'reddit.com/user/colorizethis',
    'reddit.com/user/darnit_bot',
    'reddit.com/user/darthplagueisbot',
    'reddit.com/user/deepfrybot',
    'reddit.com/user/dreamprocessor',
    'reddit.com/user/drunkanimalfactbot',
    'reddit.com/user/election_info_bot',
    'reddit.com/user/eyebleachbot',
    'reddit.com/user/factorial-bot',
    'reddit.com/user/friendly-bot',
    'reddit.com/user/garlicbot',
    'reddit.com/user/gfycat_details_fixer',
    'reddit.com/user/gifv-bot',
    'reddit.com/user/good_good_gb_bb',
    'reddit.com/user/goodbot_badbot',
    'reddit.com/user/goodmod_badmod',
    'reddit.com/user/gyazo_bot',
    'reddit.com/user/haiku-detector',
    'reddit.com/user/haikubot-1911',
    'reddit.com/user/helperbot_',
    'reddit.com/user/hug-bot',
    'reddit.com/user/i_am_a_haiku_bot',
    'reddit.com/user/ilinknsfwsubreddits',
    'reddit.com/user/image_linker_bot',
    'reddit.com/user/imdb_preview',
    'reddit.com/user/imguralbumbot',
    'reddit.com/user/jacksfilmsbot',
    'reddit.com/user/jiffierbot',
    'reddit.com/user/livetwitchclips',
    'reddit.com/user/lyrics-matcher-bot',
    'reddit.com/user/mailmygovnnbot',
    'reddit.com/user/massdropbot',
    'reddit.com/user/mentioned_videos',
    'reddit.com/user/metric_units',
    'reddit.com/user/mlbvideoconverterbot',
    'reddit.com/user/morejpeg_auto',
    'reddit.com/user/movieguide',
    'reddit.com/user/multiusebot',
    'reddit.com/user/news-summary',
    'reddit.com/user/nflvideoconverterbot',
    'reddit.com/user/octopusfunfacts',
    'reddit.com/user/octupusfunfacts',
    'reddit.com/user/opfeels',
    'reddit.com/user/payrespects-bot',
    'reddit.com/user/perrycohen',
    'reddit.com/user/phonebatterylevelbot',
    'reddit.com/user/picdescriptionbot',
    'reddit.com/user/portmanteau-bot',
    'reddit.com/user/quoteme-bot',
    'reddit.com/user/redditsilverbot',
    'reddit.com/user/redditstreamable',
    'reddit.com/user/remindmebot',
    'reddit.com/user/riskyclickerbot',
    'reddit.com/user/rosey-the-bot',
    'reddit.com/user/seriouslywhenishl3',
    'reddit.com/user/shhbot',
    'reddit.com/user/smallsubbot',
    'reddit.com/user/snapshillbot',
    'reddit.com/user/sneakpeekbot',
    'reddit.com/user/stabbot_crop',
    'reddit.com/user/stabbot',
    'reddit.com/user/steamnewsbot',
    'reddit.com/user/subjunctive__bot',
    'reddit.com/user/table_it_bot',
    'reddit.com/user/the-paranoid-android',
    'reddit.com/user/thehelperdroid',
    'reddit.com/user/thiscatmightcheeryou',
    'reddit.com/user/timestamp_bot',
    'reddit.com/user/timezone_bot',
    'reddit.com/user/tiny_smile_bot',
    'reddit.com/user/tipjarbot',
    'reddit.com/user/tippr',
    'reddit.com/user/totes_meta_bot',
    'reddit.com/user/totesmessenger',
    'reddit.com/user/tumblrdirect',
    'reddit.com/user/tweetsincommentsbot',
    'reddit.com/user/twitterlinkbot',
    'reddit.com/user/twittertostreamable',
    'reddit.com/user/video_descriptionbot',
    'reddit.com/user/videodirectlinkbot',
    'reddit.com/user/vredditmirrorbot',
    'reddit.com/user/whodidthisbot',
    'reddit.com/user/wikitextbot',
    'reddit.com/user/xkcd_transcriber',
    'reddit.com/user/youtubefactsbot',
    'reddituploads.com',
    'removeddit.com',
    'sites.google.com',
    'snapchat.com=SN',
    'soundcloud.com=SN',
    'steamcommunity.com=SN',
    't.co',
    't.umblr.com',
    'tapatalk.com=SN',
    'tmblr.co',
    'tumblr.com',
    'twitch.tv=SN',
    'twitter.com',
    'twitter.com/explore',
    'twitter.com/hashtag',
    'twitter.com/home',
    'twitter.com/i',
    'twitter.com/messages',
    'twitter.com/notifications',
    'twitter.com/search',
    'twitter.com/settings',
    'twitter.com/threader_app',
    'twitter.com/threadreaderapp',
    'twitter.com/who_to_follow',
    'vimeo.com=SN',
    'vk.com=SN',
    'wikipedia.org',
    'wordpress.com',
    'www.tumblr.com',
    'youtu.be',
    'youtube.com',
    'youtube.com/playlist',
    'youtube.com/redirect',
    'youtube.com/watch',
    'youtube.com/feed',
    'youtube.com/premium',
    'youtube.com/gaming',
    'youtube.com/account',
].map(x => {
    const arr = x.split('=');
    const id = arr[0];
    if (arr[1]) badIdentifiersReasons[id] = <BadIdentifierReason>arr[1];
    badIdentifiers[id] = true;
    return id;
});

var lastSubmissionError: string = null;

var overrides: LabelMap = null;

var accepted = false;
var installationId: string = null;
var theme: string = '';

browser.storage.local.get(['overrides', 'accepted', 'installationId', 'theme'], v => {
    if (!v.installationId) {
        installationId = (Math.random() + '.' + Math.random() + '.' + Math.random()).replace(/\./g, '');
        browser.storage.local.set({ installationId: installationId });
    } else {
        installationId = v.installationId;
    }

    accepted = v.accepted
    overrides = v.overrides || {}
    theme = v.theme;

    const migration = overrides[MIGRATION] || 0;
    if (migration < CURRENT_VERSION) {

        for (const key of Object.getOwnPropertyNames(overrides)) {
            if (key.startsWith(':')) continue;
            if (key.startsWith('facebook.com/a.')) {
                delete overrides[key];
                continue;
            }
            if (key != key.toLowerCase()) {
                let v = overrides[key];
                delete overrides[key];
                overrides[key.toLowerCase()] = v;
            }
        }

        badIdentifiersArray.forEach(x => delete overrides[x]);

        overrides[MIGRATION] = <any>CURRENT_VERSION;
        browser.storage.local.set({ overrides: overrides });
    }
})

const bloomFilters: BloomFilter[] = [];

async function loadBloomFilter(name: LabelKind) {

    const url = browser.extension.getURL('data/' + name + '.dat');
    const response = await fetch(url);
    const arrayBuffer = await response.arrayBuffer();

    const array = new Uint32Array(arrayBuffer);
    const b = new BloomFilter(array, 20);
    b.name = name;
    bloomFilters.push(b);
}



browser.runtime.onMessage.addListener<ShinigamiEyesMessage, ShinigamiEyesMessage | LabelMap>((message, sender, sendResponse) => {
    if (message.setTheme) {
        theme = message.setTheme;
        browser.storage.local.set({ theme: message.setTheme });
        chrome.tabs.query({}, function (tabs) {
            for (var i = 0; i < tabs.length; ++i) {
                try {
                    sendMessageToContent(tabs[i].id, null, { updateAllLabels: true });
                } catch (e) { }
            }
        });
    }
    if (message.acceptClicked !== undefined) {
        accepted = message.acceptClicked;
        browser.storage.local.set({ accepted: accepted });
        if (accepted && uncommittedResponse)
            saveLabel(uncommittedResponse)
        uncommittedResponse = null;
    }
    if (message.closeCallingTab) {
        browser.tabs.remove(sender.tab.id);
        return;
    }
    const response: LabelMap = {};
    const transphobic = message.myself && bloomFilters.filter(x => x.name == 'transphobic')[0].test(message.myself);
    for (const id of message.ids) {
        if (overrides[id] !== undefined) {
            response[id] = overrides[id];
            continue;
        }
        if (transphobic) {
            if (id == message.myself) continue;
            let sum = 0;
            for (let i = 0; i < id.length; i++) {
                sum += id.charCodeAt(i);
            }
            if (sum % 8 != 0) continue;
        }
        for (const bloomFilter of bloomFilters) {
            if (bloomFilter.test(id)) response[id] = bloomFilter.name;
        }
    }
    response[':theme'] = <any>theme;
    sendResponse(response);
});

loadBloomFilter('transphobic');
loadBloomFilter('t-friendly');

const socialNetworkPatterns = [
            "*://*.facebook.com/*",
            "*://*.youtube.com/*",
            "*://*.reddit.com/*",
            "*://*.twitter.com/*",
            "*://*.t.co/*",
            "*://*.medium.com/*",
            "*://disqus.com/*",
            "*://*.tumblr.com/*",
            "*://*.wikipedia.org/*",
            "*://*.rationalwiki.org/*",
            "*://*.google.com/*",
            "*://*.bing.com/*",
            "*://duckduckgo.com/*",
];

const homepagePatterns = [
            "*://*/",
            "*://*/?fbclid=*",
            "*://*/about*",
            "*://*/contact*",
            "*://*/faq*",
            "*://*/blog",
            "*://*/blog/",
            "*://*/news",
            "*://*/news/",
            "*://*/en/",
            "*://*/index.html",
            "*://*/index.php",
];

const allPatterns = socialNetworkPatterns.concat(homepagePatterns);

function createEntityContextMenu(text: string, id: ContextMenuCommand) {
    browser.contextMenus.create({
        id: id,
        title: text,
        contexts: ["link"],
        targetUrlPatterns: allPatterns
    });
}


function createSystemContextMenu(text: string, id: ContextMenuCommand, separator?: boolean) {
    browser.contextMenus.create({
        id: id,
        title: text,
        contexts: ["all"],
        type: separator ? 'separator' : 'normal',
        documentUrlPatterns: allPatterns
    });
}


browser.contextMenus.create({
    title: '(Please right click on a link instead)', 
    enabled: false,
    contexts: ['page'],
    documentUrlPatterns: socialNetworkPatterns
});

createEntityContextMenu('Mark as anti-trans', 'mark-transphobic');
createEntityContextMenu('Mark as t-friendly', 'mark-t-friendly');
createEntityContextMenu('Clear', 'mark-none');

createSystemContextMenu('---', 'separator', true);
createSystemContextMenu('Settings', 'options');
createSystemContextMenu('Help', 'help');

var uncommittedResponse: ShinigamiEyesSubmission = null;

async function submitPendingRatings() {
    const submitted = getPendingSubmissions().map(x => x);
    const requestBody = {
        installationId: installationId,
        lastError: lastSubmissionError,
        entries: submitted
    }
    lastSubmissionError = null;
    console.log('Sending request');
    try {
        const response = await fetch('https://k5kk18774h.execute-api.us-east-1.amazonaws.com/default/shinigamiEyesSubmission', {
            body: JSON.stringify(requestBody),
            method: 'POST',
            credentials: 'omit',
        });
        if (response.status != 200) throw ('HTTP status: ' + response.status)
        const result = await response.text();

        if (result != 'SUCCESS') throw 'Bad response: ' + ('' + result).substring(0, 20);

        overrides[PENDING_SUBMISSIONS] = <any>getPendingSubmissions().filter(x => submitted.indexOf(x) == -1);
        browser.storage.local.set({ overrides: overrides });
    } catch (e) {
        lastSubmissionError = '' + e
    }

}

function getPendingSubmissions(): ShinigamiEyesSubmission[] {
    return <any>overrides[PENDING_SUBMISSIONS];
}


function saveLabel(response: ShinigamiEyesSubmission) {
    if (accepted) {
        if (!getPendingSubmissions()) {
            overrides[PENDING_SUBMISSIONS] = <any>Object.getOwnPropertyNames(overrides)
                .map<ShinigamiEyesSubmission>(x => { return { identifier: x, label: overrides[x] } });
        }
        overrides[response.identifier] = response.mark;
        if (response.secondaryIdentifier)
            overrides[response.secondaryIdentifier] = response.mark;
        browser.storage.local.set({ overrides: overrides });
        response.version = CURRENT_VERSION;
        response.submissionId = (Math.random() + '').replace('.', '');
        getPendingSubmissions().push(response);
        submitPendingRatings();
        //console.log(response);
        sendMessageToContent(response.tabId, response.frameId, {
            updateAllLabels: true,
            confirmSetIdentifier: response.identifier,
            confirmSetUrl: response.url,
            confirmSetLabel: response.mark || 'none'
        });
        //browser.tabs.executeScript(response.tabId, {code: 'updateAllLabels()'});
        return;
    }
    uncommittedResponse = response;
    openHelp();
}

function openHelp() {
    browser.tabs.create({
        url: browser.extension.getURL('help.html')
    })
}


function openOptions() {
    browser.tabs.create({
        url: browser.extension.getURL('options.html')
    })
}



function sendMessageToContent(tabId: number, frameId: number, message: ShinigamiEyesCommand) {
    const options = frameId === null ? undefined : { frameId: frameId };
    console.log(message);
    browser.tabs.sendMessage<ShinigamiEyesCommand, void>(tabId, message, options);
}

browser.contextMenus.onClicked.addListener(function (info, tab) {
    if (info.menuItemId == 'help') {
        openHelp();
        return;
    }
    if (info.menuItemId == 'options') {
        openOptions();
        return;
    }

    const tabId = tab.id;
    const frameId = info.frameId;

    var label = <LabelKind>info.menuItemId.substring('mark-'.length);
    if (label == 'none') label = '';
    browser.tabs.sendMessage<ShinigamiEyesSubmission, ShinigamiEyesSubmission>(tabId, {
        mark: label,
        url: info.linkUrl,
        tabId: tabId,
        frameId: frameId,
        // elementId: info.targetElementId,
        debug: <any>overrides.debug
    }, { frameId: frameId }, response => {
        if (!response || !response.identifier) {
            return;
        }
        if (response.mark) {
            if (badIdentifiers[response.identifier]) {
                sendMessageToContent(tabId, frameId, {
                    confirmSetIdentifier: response.identifier,
                    confirmSetUrl: response.url,
                    confirmSetLabel: 'bad-identifier',
                    badIdentifierReason: badIdentifiersReasons[response.identifier]
                });
                return;
            }
            if (response.secondaryIdentifier && badIdentifiers[response.secondaryIdentifier])
                response.secondaryIdentifier = null;
        }
        response.tabId = tabId;
        response.frameId = frameId;
        saveLabel(response);
    })

});