//- vim:ts=4:sw=4:
doctype html
html
	head
		include head
		title Chat Log
		style.
			table { width: min(60rem,100%); }
			td:nth-child(1), td:nth-child(2) { white-space: nowrap; width: 0; }
			td:nth-child(3) { white-space: nowrap; width: 8rem; }
			#foot { display: inline-block; padding-top: 8px; }
			table { border: 1px solid black; }
			td { border: none; }
			td a { text-decoration: none; color: black; }
			tr { background-color: white; }
			tr.me { background-color: aliceblue; }
	body
		include header
		article
			h1 Chat Log
			if page_size > 0
				p
					button(onclick="oldest()") Oldest
					button(onclick="back()") ←
					button(onclick="next()") →
					button(onclick="newest()") Newest
					span#foot
			p
			table
				thead
					tr
						th Game
						th Time
						th Who
						th Message
				tbody
			if page_size > 0
				p: a(href="/chat/all") All messages

		script.
			let chat_data = !{ JSON.stringify(chat).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;") };
			let page_size = !{ page_size };
			let me = !{ JSON.stringify(user.name) };
			let table = document.querySelector("tbody");
			let foot = document.querySelector("#foot");
			let chat_lines = [];
			function add(tr,text,link) {
				let td = document.createElement("td");
				if (link) {
					let a = document.createElement("a");
					a.href = link;
					a.textContent = text;
					td.appendChild(a);
				} else {
					td.textContent = text;
				}
				tr.appendChild(td);
			}
			function format_date(date) {
				let t = date.toISOString();
				return t.substring(0,10) + " " + t.substring(11,19);
			}
			for (let [game_id,time,user,message] of chat_data) {
				let tr = document.createElement("tr");
				if (user === me) tr.className = "me";
				add(tr,game_id,"/join/"+game_id);
				add(tr,format_date(new Date(time+"Z")));
				add(tr,user,"/user/"+user);
				add(tr,message);
				chat_lines.push(tr);
			}
			function next() { if (page > 0) --page; update(); }
			function back() { if (page < page_count-1) ++page; update(); }
			function newest() { page=0; update(); }
			function oldest() { page=page_count-1; update(); }
			let chat_size = chat_lines.length;
			let page_count = Math.ceil(chat_size / page_size);
			let page = 0;
			function update() {
				table.innerHTML = "";
				for (let i = 0; i < page_size; ++i) {
					let k = page * page_size + ( page_size - i - 1);
					if (k >= 0 && k < chat_size)
						table.appendChild(chat_lines[k]);
					foot.textContent = `${page_count-page} / ${page_count}`;
				}
			}
			if (page_size > 0) {
				newest();
			} else {
				for (let i = chat_size-1; i >= 0; --i)
					table.appendChild(chat_lines[i]);
			}