import{ Contextmenu }from"./contextmenu.js";
import{ Guild }from"./guild.js";
import{ emojijson }from"./jsontypes.js";
import{ Localuser }from"./localuser.js";

class Emoji{
	static emojis:{
        name:string,
        emojis:{
            name:string,
            emoji:string,
        }[]
    }[];
	name:string;
	id:string;
	animated:boolean;
	owner:Guild|Localuser;
	get guild(){
		if(this.owner instanceof Guild){
			return this.owner;
		}
	}
	get localuser(){
		if(this.owner instanceof Guild){
			return this.owner.localuser;
		}else{
			return this.owner;
		}
	}
	get info(){
		return this.owner.info;
	}
	constructor(json:{name:string,id:string,animated:boolean},owner:Guild|Localuser){
		this.name=json.name;
		this.id=json.id;
		this.animated=json.animated;
		this.owner=owner;
	}
	getHTML(bigemoji:boolean=false){
		const emojiElem=document.createElement("img");
		emojiElem.classList.add("md-emoji");
		emojiElem.classList.add(bigemoji ? "bigemoji" : "smallemoji");
		emojiElem.crossOrigin="anonymous";
		emojiElem.src=this.info.cdn + "/emojis/" + this.id + "." + (this.animated ? "gif" : "png") + "?size=32";

		emojiElem.alt=this.name;
		emojiElem.loading="lazy";
		return emojiElem;
	}
	static decodeEmojiList(buffer:ArrayBuffer){
		const view = new DataView(buffer, 0);
		let i=0;
		function read16(){
			const int=view.getUint16(i);
			i+=2;
			return int;
		}
		function read8(){
			const int=view.getUint8(i);
			i+=1;
			return int;
		}
		function readString8(){
			return readStringNo(read8());
		}
		function readString16(){
			return readStringNo(read16());
		}
		function readStringNo(length:number){
			const array=new Uint8Array(length);

			for(let i=0;i<length;i++){
				array[i]=read8();
			}
			//console.log(array);
			return new TextDecoder("utf-8").decode(array.buffer);
		}
		const build:{name:string,emojis:{name:string,emoji:string}[]}[]=[];
		let cats=read16();

		for(;cats!==0;cats--){
			const name=readString16();
			const emojis:{
                    name:string,
                    skin_tone_support:boolean,
                    emoji:string
                }[]=[];
			let emojinumber=read16();
			for(;emojinumber!==0;emojinumber--){
				//console.log(emojis);
				const name=readString8();
				const len=read8();
				const skin_tone_support=len>127;
				const emoji=readStringNo(len-(Number(skin_tone_support)*128));
				emojis.push({
					name,
					skin_tone_support,
					emoji
				});
			}
			build.push({
				name,
				emojis
			});
		}
		this.emojis=build;
		console.log(build);
	}
	static grabEmoji(){
		fetch("/emoji.bin").then(e=>{
			return e.arrayBuffer();
		}).then(e=>{
			Emoji.decodeEmojiList(e);
		});
	}
	static async emojiPicker(x:number,y:number, localuser:Localuser):Promise<Emoji|string>{
		let res:(r:Emoji|string)=>void;
		const promise:Promise<Emoji|string>=new Promise(r=>{
			res=r;
		});
		const menu=document.createElement("div");
		menu.classList.add("flextttb", "emojiPicker");
		menu.style.top=y+"px";
		menu.style.left=x+"px";

		const title=document.createElement("h2");
		title.textContent=Emoji.emojis[0].name;
		title.classList.add("emojiTitle");
		menu.append(title);
		const selection=document.createElement("div");
		selection.classList.add("flexltr","dontshrink","emojirow");
		const body=document.createElement("div");
		body.classList.add("emojiBody");

		let isFirst = true;
		localuser.guilds.filter(guild=>guild.id != "@me" && guild.emojis.length > 0).forEach(guild=>{
			const select = document.createElement("div");
			select.classList.add("emojiSelect");

			if(guild.properties.icon){
				const img = document.createElement("img");
				img.classList.add("pfp", "servericon", "emoji-server");
				img.crossOrigin = "anonymous";
				img.src = localuser.info.cdn + "/icons/" + guild.properties.id + "/" + guild.properties.icon + ".png?size=48";
				img.alt = "Server: " + guild.properties.name;
				select.appendChild(img);
			}else{
				const div = document.createElement("span");
				div.textContent = guild.properties.name.replace(/'s /g, " ").replace(/\w+/g, word=>word[0]).replace(/\s/g, "");
				select.append(div);
			}

			selection.append(select);

			const clickEvent = ()=>{
				title.textContent = guild.properties.name;
				body.innerHTML = "";
				for(const emojit of guild.emojis){
					const emojiElem = document.createElement("div");
					emojiElem.classList.add("emojiSelect");

					const emojiClass = new Emoji({
						id: emojit.id as string,
						name: emojit.name,
						animated: emojit.animated as boolean
					},localuser);
					emojiElem.append(emojiClass.getHTML());
					body.append(emojiElem);

					emojiElem.addEventListener("click", ()=>{
						res(emojiClass);
						Contextmenu.currentmenu.remove();
					});
				}
			};

			select.addEventListener("click", clickEvent);
			if(isFirst){
				clickEvent();
				isFirst = false;
			}
		});

		setTimeout(()=>{
			if(Contextmenu.currentmenu!=""){
				Contextmenu.currentmenu.remove();
			}
			document.body.append(menu);
			Contextmenu.currentmenu=menu;
			Contextmenu.keepOnScreen(menu);
		},10);


		let i=0;
		for(const thing of Emoji.emojis){
			const select=document.createElement("div");
			select.textContent=thing.emojis[0].emoji;
			select.classList.add("emojiSelect");
			selection.append(select);
			const clickEvent=()=>{
				title.textContent=thing.name;
				body.innerHTML="";
				for(const emojit of thing.emojis){
					const emoji=document.createElement("div");
					emoji.classList.add("emojiSelect");
					emoji.textContent=emojit.emoji;
					body.append(emoji);
					emoji.onclick=_=>{
						res(emojit.emoji);
						Contextmenu.currentmenu.remove();
					};
				}
			};
			select.onclick=clickEvent;
			if(i===0){
				clickEvent();
			}
			i++;
		}
		menu.append(selection);
		menu.append(body);
		return promise;
	}
}
Emoji.grabEmoji();
export{Emoji};