// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.

const emoticonPatterns = {
    smile: /(^|\s)(:-?\))($|\s)/g, // :)
    open_mouth: /(^|\s)(:o)($|\s)/gi, // :o
    scream: /(^|\s)(:-o)($|\s)/gi, // :-o
    smirk: /(^|\s)(:-?])($|\s)/g, // :]
    grinning: /(^|\s)(:-?d)($|\s)/gi, // :D
    stuck_out_tongue_closed_eyes: /(^|\s)(x-d)($|\s)/gi, // x-d
    stuck_out_tongue: /(^|\s)(:-?p)($|\s)/gi, // :p
    rage: /(^|\s)(:-?[\[@])($|\s)/g, // :@
    frowning: /(^|\s)(:-?\()($|\s)/g, // :(
    sob: /(^|\s)(:['’]-?\(|:'\(|:'\()($|\s)/g, // :`(
    kissing_heart: /(^|\s)(:-?\*)($|\s)/g, // :*
    pensive: /(^|\s)(:-?\/)($|\s)/g, // :/
    confounded: /(^|\s)(:-?s)($|\s)/gi, // :s
    flushed: /(^|\s)(:-?\|)($|\s)/g, // :|
    relaxed: /(^|\s)(:-?\$)($|\s)/g, // :$
    mask: /(^|\s)(:-x)($|\s)/gi, // :-x
    heart: /(^|\s)(<3|&lt;3)($|\s)/g, // <3
    broken_heart: /(^|\s)(<\/3|&lt;&#x2F;3)($|\s)/g, // </3
    thumbsup: /(^|\s)(:\+1:)($|\s)/g, // :+1:
    thumbsdown: /(^|\s)(:\-1:)($|\s)/g // :-1:
};

function initializeEmoticonMap() {
    const emoticonNames =
        ('+1,-1,100,1234,8ball,a,ab,abc,abcd,accept,aerial_tramway,airplane,alarm_clock,alien,ambulance,anchor,angel,' +
        'anger,angry,anguished,ant,apple,aquarius,aries,arrow_backward,arrow_double_down,arrow_double_up,arrow_down,' +
        'arrow_down_small,arrow_forward,arrow_heading_down,arrow_heading_up,arrow_left,arrow_lower_left,' +
        'arrow_lower_right,arrow_right,arrow_right_hook,arrow_up,arrow_up_down,arrow_up_small,arrow_upper_left,' +
        'arrow_upper_right,arrows_clockwise,arrows_counterclockwise,art,articulated_lorry,astonished,atm,b,baby,' +
        'baby_bottle,baby_chick,baby_symbol,back,baggage_claim,balloon,ballot_box_with_check,bamboo,banana,bangbang,' +
        'bank,bar_chart,barber,baseball,basketball,bath,bathtub,battery,bear,bee,beer,beers,beetle,beginner,bell,bento,' +
        'bicyclist,bike,bikini,bird,birthday,black_circle,black_joker,black_medium_small_square,black_medium_square,' +
        'black_nib,black_small_square,black_square,black_square_button,blossom,blowfish,blue_book,blue_car,blue_heart,' +
        'blush,boar,boat,bomb,book,bookmark,bookmark_tabs,books,boom,boot,bouquet,bow,bowling,bowtie,boy,bread,' +
        'bride_with_veil,bridge_at_night,briefcase,broken_heart,bug,bulb,bullettrain_front,bullettrain_side,bus,busstop,' +
        'bust_in_silhouette,busts_in_silhouette,cactus,cake,calendar,calling,camel,camera,cancer,candy,capital_abcd,' +
        'capricorn,car,card_index,carousel_horse,cat,cat2,cd,chart,chart_with_downwards_trend,chart_with_upwards_trend,' +
        'checkered_flag,cherries,cherry_blossom,chestnut,chicken,children_crossing,chocolate_bar,christmas_tree,church,' +
        'cinema,circus_tent,city_sunrise,city_sunset,cl,clap,clapper,clipboard,clock1,clock10,clock1030,clock11,' +
        'clock1130,clock12,clock1230,clock130,clock2,clock230,clock3,clock330,clock4,clock430,clock5,clock530,clock6,' +
        'clock630,clock7,clock730,clock8,clock830,clock9,clock930,closed_book,closed_lock_with_key,closed_umbrella,cloud,' +
        'clubs,cn,cocktail,coffee,cold_sweat,collision,computer,confetti_ball,confounded,confused,congratulations,' +
        'construction,construction_worker,convenience_store,cookie,cool,cop,copyright,corn,couple,couple_with_heart,' +
        'couplekiss,cow,cow2,credit_card,crescent_moon,crocodile,crossed_flags,crown,cry,crying_cat_face,crystal_ball,' +
        'cupid,curly_loop,currency_exchange,curry,custard,customs,cyclone,dancer,dancers,dango,dart,dash,date,de,' +
        'deciduous_tree,department_store,diamond_shape_with_a_dot_inside,diamonds,disappointed,disappointed_relieved,' +
        'dizzy,dizzy_face,do_not_litter,dog,dog2,dollar,dolls,dolphin,donut,door,doughnut,dragon,dragon_face,dress,' +
        'dromedary_camel,droplet,dvd,e-mail,ear,ear_of_rice,earth_africa,earth_americas,earth_asia,egg,eggplant,eight,' +
        'eight_pointed_black_star,eight_spoked_asterisk,electric_plug,elephant,email,end,envelope,es,euro,' +
        'european_castle,european_post_office,evergreen_tree,exclamation,expressionless,eyeglasses,eyes,facepunch,' +
        'factory,fallen_leaf,family,fast_forward,fax,fearful,feelsgood,feet,ferris_wheel,file_folder,finnadie,fire,' +
        'fire_engine,fireworks,first_quarter_moon,first_quarter_moon_with_face,fish,fish_cake,fishing_pole_and_fish,fist,' +
        'five,flags,flashlight,floppy_disk,flower_playing_cards,flushed,foggy,football,fork_and_knife,fountain,four,' +
        'four_leaf_clover,fr,free,fried_shrimp,fries,frog,frowning,fu,fuelpump,full_moon,full_moon_with_face,game_die,gb,' +
        'gem,gemini,ghost,gift,gift_heart,girl,globe_with_meridians,goat,goberserk,godmode,golf,grapes,green_apple,' +
        'green_book,green_heart,grey_exclamation,grey_question,grimacing,grin,grinning,guardsman,guitar,gun,haircut,' +
        'hamburger,hammer,hamster,hand,handbag,hankey,hash,hatched_chick,hatching_chick,headphones,hear_no_evil,heart,' +
        'heart_decoration,heart_eyes,heart_eyes_cat,heartbeat,heartpulse,hearts,heavy_check_mark,heavy_division_sign,' +
        'heavy_dollar_sign,heavy_exclamation_mark,heavy_minus_sign,heavy_multiplication_x,heavy_plus_sign,helicopter,' +
        'herb,hibiscus,high_brightness,high_heel,hocho,honey_pot,honeybee,horse,horse_racing,hospital,hotel,hotsprings,' +
        'hourglass,hourglass_flowing_sand,house,house_with_garden,hurtrealbad,hushed,ice_cream,icecream,id,' +
        'ideograph_advantage,imp,inbox_tray,incoming_envelope,information_desk_person,information_source,innocent,' +
        'interrobang,iphone,it,izakaya_lantern,jack_o_lantern,japan,japanese_castle,japanese_goblin,japanese_ogre,jeans,' +
        'joy,joy_cat,jp,key,keycap_ten,kimono,kiss,kissing,kissing_cat,kissing_closed_eyes,kissing_face,kissing_heart,' +
        'kissing_smiling_eyes,koala,koko,kr,large_blue_circle,large_blue_diamond,large_orange_diamond,last_quarter_moon,' +
        'last_quarter_moon_with_face,laughing,leaves,ledger,left_luggage,left_right_arrow,leftwards_arrow_with_hook,' +
        'lemon,leo,leopard,libra,light_rail,link,lips,lipstick,lock,lock_with_ink_pen,lollipop,loop,loudspeaker,' +
        'love_hotel,love_letter,low_brightness,m,mag,mag_right,mahjong,mailbox,mailbox_closed,mailbox_with_mail,' +
        'mailbox_with_no_mail,man,man_with_gua_pi_mao,man_with_turban,mans_shoe,maple_leaf,mask,massage,meat_on_bone,' +
        'mega,melon,memo,mens,metal,metro,microphone,microscope,milky_way,minibus,minidisc,mobile_phone_off,' +
        'money_with_wings,moneybag,monkey,monkey_face,monorail,mortar_board,mount_fuji,mountain_bicyclist,' +
        'mountain_cableway,mountain_railway,mouse,mouse2,movie_camera,moyai,muscle,mushroom,musical_keyboard,' +
        'musical_note,musical_score,mute,nail_care,name_badge,neckbeard,necktie,negative_squared_cross_mark,' +
        'neutral_face,new,new_moon,new_moon_with_face,newspaper,ng,nine,no_bell,no_bicycles,no_entry,no_entry_sign,' +
        'no_good,no_mobile_phones,no_mouth,no_pedestrians,no_smoking,non-potable_water,nose,notebook,' +
        'notebook_with_decorative_cover,notes,nut_and_bolt,o,o2,ocean,octocat,octopus,oden,office,ok,ok_hand,' +
        'ok_woman,older_man,older_woman,on,oncoming_automobile,oncoming_bus,oncoming_police_car,oncoming_taxi,one,' +
        'open_file_folder,open_hands,open_mouth,ophiuchus,orange_book,outbox_tray,ox,package,page_facing_up,' +
        'page_with_curl,pager,palm_tree,panda_face,paperclip,parking,part_alternation_mark,partly_sunny,' +
        'passport_control,paw_prints,peach,pear,pencil,pencil2,penguin,pensive,performing_arts,persevere,' +
        'person_frowning,person_with_blond_hair,person_with_pouting_face,phone,pig,pig2,pig_nose,pill,pineapple,pisces,' +
        'pizza,plus1,point_down,point_left,point_right,point_up,point_up_2,police_car,poodle,poop,post_office,' +
        'postal_horn,postbox,potable_water,pouch,poultry_leg,pound,pouting_cat,pray,princess,punch,purple_heart,purse,' +
        'pushpin,put_litter_in_its_place,question,rabbit,rabbit2,racehorse,radio,radio_button,rage,rage1,rage2,rage3,' +
        'rage4,railway_car,rainbow,raised_hand,raised_hands,raising_hand,ram,ramen,rat,recycle,red_car,red_circle,' +
        'registered,relaxed,relieved,repeat,repeat_one,restroom,revolving_hearts,rewind,ribbon,rice,rice_ball,' +
        'rice_cracker,rice_scene,ring,rocket,roller_coaster,rooster,rose,rotating_light,round_pushpin,rowboat,ru,' +
        'rugby_football,runner,running,running_shirt_with_sash,sa,sagittarius,sailboat,sake,sandal,santa,satellite,' +
        'satisfied,saxophone,school,school_satchel,scissors,scorpius,scream,scream_cat,scroll,seat,secret,see_no_evil,' +
        'seedling,seven,shaved_ice,sheep,shell,ship,shipit,shirt,shit,shoe,shower,signal_strength,six,six_pointed_star,' +
        'ski,skull,sleeping,sleepy,slot_machine,small_blue_diamond,small_orange_diamond,small_red_triangle,' +
        'small_red_triangle_down,smile,smile_cat,smiley,smiley_cat,smiling_imp,smirk,smirk_cat,smoking,snail,snake,' +
        'snowboarder,snowflake,snowman,sob,soccer,soon,sos,sound,space_invader,spades,spaghetti,sparkle,sparkler,' +
        'sparkles,sparkling_heart,speak_no_evil,speaker,speech_balloon,speedboat,squirrel,star,star2,stars,station,' +
        'statue_of_liberty,steam_locomotive,stew,straight_ruler,strawberry,stuck_out_tongue,stuck_out_tongue_closed_eyes,' +
        'stuck_out_tongue_winking_eye,sun_with_face,sunflower,sunglasses,sunny,sunrise,sunrise_over_mountains,surfer,' +
        'sushi,suspect,suspension_railway,sweat,sweat_drops,sweat_smile,sweet_potato,swimmer,symbols,syringe,tada,' +
        'tanabata_tree,tangerine,taurus,taxi,tea,telephone,telephone_receiver,telescope,tennis,tent,thought_balloon,' +
        'three,thumbsdown,thumbsup,ticket,tiger,tiger2,tired_face,tm,toilet,tokyo_tower,tomato,tongue,top,tophat,' +
        'tractor,traffic_light,train,train2,tram,triangular_flag_on_post,triangular_ruler,trident,triumph,trolleybus,' +
        'trollface,trophy,tropical_drink,tropical_fish,truck,trumpet,tshirt,tulip,turtle,tv,twisted_rightwards_arrows,' +
        'two,two_hearts,two_men_holding_hands,two_women_holding_hands,u5272,u5408,u55b6,u6307,u6708,u6709,u6e80,u7121,' +
        'u7533,u7981,u7a7a,uk,umbrella,unamused,underage,unlock,up,us,v,vertical_traffic_light,vhs,vibration_mode,' +
        'video_camera,video_game,violin,virgo,volcano,vs,walking,waning_crescent_moon,waning_gibbous_moon,warning,watch,' +
        'water_buffalo,watermelon,wave,wavy_dash,waxing_crescent_moon,waxing_gibbous_moon,wc,weary,wedding,whale,whale2,' +
        'wheelchair,white_check_mark,white_circle,white_flower,white_large_square,white_medium_small_square,' +
        'white_medium_square,white_small_square,white_square_button,wind_chime,wine_glass,wink,wolf,woman,' +
        'womans_clothes,womans_hat,womens,worried,wrench,x,yellow_heart,yen,yum,zap,zero,zzz').split(',');

    // use a map to help make lookups faster instead of having to use indexOf on an array
    const out = new Map();

    for (let i = 0; i < emoticonNames.length; i++) {
        out[emoticonNames[i]] = true;
    }

    return out;
}

const emoticonMap = initializeEmoticonMap();

export function handleEmoticons(text, tokens) {
    let output = text;

    function replaceEmoticonWithToken(match, prefix, name, suffix) {
        if (emoticonMap[name]) {
            const index = tokens.size;
            const alias = `MM_EMOTICON${index}`;

            tokens.set(alias, {
                value: `<img align="absmiddle" alt=${match} class="emoji" src=${getImagePathForEmoticon(name)} title=${match} />`,
                originalText: match
            });

            return prefix + alias + suffix;
        }

        return match;
    }

    output = output.replace(/(^|\s):([a-zA-Z0-9_-]+):($|\s)/g, replaceEmoticonWithToken);

    $.each(emoticonPatterns, (name, pattern) => {
        // this might look a bit funny, but since the name isn't contained in the actual match
        // like with the named emoticons, we need to add it in manually
        output = output.replace(pattern, (match, prefix, emoticon, suffix) => replaceEmoticonWithToken(match, prefix, name, suffix));
    });

    return output;
}

function getImagePathForEmoticon(name) {
    return `/static/images/emoji/${name}.png`;
}