/*
 * Live2D Widget
 * https://github.com/stevenjoezhang/live2d-widget
 */

function loadWidget(config) {
	let { apiPath, cdnPath } = config;
	let useCDN = false, modelList;
	if (typeof cdnPath === "string") {
		useCDN = true;
		if (!cdnPath.endsWith("/")) cdnPath += "/";
	} else if (typeof apiPath === "string") {
		if (!apiPath.endsWith("/")) apiPath += "/";
	} else {
		console.error("Invalid initWidget argument!");
		return;
	}
	localStorage.removeItem("waifu-display");
	sessionStorage.removeItem("waifu-text");
	document.body.insertAdjacentHTML("beforeend", `<div id="waifu">
			<div id="waifu-tips"></div>
			<canvas id="live2d" width="800" height="800"></canvas>
			<div id="waifu-tool"></div>
		</div>`);
	// https://stackoverflow.com/questions/24148403/trigger-css-transition-on-appended-element
	setTimeout(() => {
		document.getElementById("waifu").style.bottom = 0;
	}, 0);

	function randomSelection(obj) {
		return Array.isArray(obj) ? obj[Math.floor(Math.random() * obj.length)] : obj;
	}
	// 检测用户活动状态，并在空闲时显示消息
	let userAction = false,
		userActionTimer,
		messageTimer,
		messageArray = ["好久不见，日子过得好快呢……", "大坏蛋！你都多久没理人家了呀，嘤嘤嘤～", "嗨～快来逗我玩吧！", "拿小拳拳锤你胸口！", "记得把小家加入 Adblock 白名单哦！"];
	window.addEventListener("mousemove", () => userAction = true);
	window.addEventListener("keydown", () => userAction = true);
	setInterval(() => {
		if (userAction) {
			userAction = false;
			clearInterval(userActionTimer);
			userActionTimer = null;
		} else if (!userActionTimer) {
			userActionTimer = setInterval(() => {
				showMessage(randomSelection(messageArray), 6000, 9);
			}, 20000);
		}
	}, 1000);

	(function registerEventListener() {
		const tools = {
			"hitokoto": {
				icon: "fa-comment",
				callback: showHitokoto
			},
			"asteroids": {
				icon: "fa-paper-plane",
				callback: () => {
					if (window.Asteroids) {
						if (!window.ASTEROIDSPLAYERS) window.ASTEROIDSPLAYERS = [];
						window.ASTEROIDSPLAYERS.push(new Asteroids());
					} else {
						const script = document.createElement("script");
						script.src = "https://fastly.jsdelivr.net/gh/stevenjoezhang/asteroids/asteroids.js";
						document.head.appendChild(script);
					}
				}
			},
			"switch-model": {
				icon: "fa-user-circle",
				callback: loadOtherModel
			},
			"switch-texture": {
				icon: "fa-street-view",
				callback: loadRandModel
			},
			"photo": {
				icon: "fa-camera-retro",
				callback: () => {
					showMessage("照好了嘛，是不是很可爱呢？", 6000, 9);
					Live2D.captureName = "photo.png";
					Live2D.captureFrame = true;
				}
			},
			"info": {
				icon: "fa-info-circle",
				callback: () => {
					open("https://github.com/stevenjoezhang/live2d-widget");
				}
			},
			"quit": {
				icon: "fa-times",
				callback: () => {
					localStorage.setItem("waifu-display", Date.now());
					showMessage("愿你有一天能与重要的人重逢。", 2000, 11);
					document.getElementById("waifu").style.bottom = "-500px";
					setTimeout(() => {
						document.getElementById("waifu").style.display = "none";
						document.getElementById("waifu-toggle").classList.add("waifu-toggle-active");
					}, 3000);
				}
			}
		}
		if (!Array.isArray(config.tools)) {
			config.tools = Object.keys(tools);
		}
		for (let tool of config.tools) {
			if (tools[tool]) {
				const { icon, callback } = tools[tool];
				document.getElementById("waifu-tool").insertAdjacentHTML("beforeend", `<span id="waifu-tool-${tool}" class="fa fa-lg ${icon}"></span>`);
				document.getElementById(`waifu-tool-${tool}`).addEventListener("click", callback);
			}
		}

		const devtools = () => {};
		console.log("%c", devtools);
		devtools.toString = () => {
			showMessage("哈哈，你打开了控制台，是想要看看我的小秘密吗？", 6000, 9);
		};
		window.addEventListener("copy", () => {
			showMessage("你都复制了些什么呀，转载要记得加上出处哦！", 6000, 9);
		});
		window.addEventListener("visibilitychange", () => {
			if (!document.hidden) showMessage("哇，你终于回来了～", 6000, 9);
		});
	})();

	(function welcomeMessage() {
		let text;
		if (location.pathname === "/") { // 如果是主页
			const now = new Date().getHours();
			if (now > 5 && now <= 7) text = "早上好！一日之计在于晨，美好的一天就要开始了。";
			else if (now > 7 && now <= 11) text = "上午好！工作顺利嘛，不要久坐，多起来走动走动哦！";
			else if (now > 11 && now <= 13) text = "中午了，工作了一个上午，现在是午餐时间！";
			else if (now > 13 && now <= 17) text = "午后很容易犯困呢，今天的运动目标完成了吗？";
			else if (now > 17 && now <= 19) text = "傍晚了！窗外夕阳的景色很美丽呢，最美不过夕阳红～";
			else if (now > 19 && now <= 21) text = "晚上好，今天过得怎么样？";
			else if (now > 21 && now <= 23) text = ["已经这么晚了呀，早点休息吧，晚安～", "深夜时要爱护眼睛呀！"];
			else text = "你是夜猫子呀？这么晚还不睡觉，明天起的来嘛？";
		} else if (document.referrer !== "") {
			const referrer = new URL(document.referrer),
				domain = referrer.hostname.split(".")[1];
			if (location.hostname === referrer.hostname) text = `欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
			else if (domain === "baidu") text = `Hello！来自 百度搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&wd=")[1].split("&")[0]}</span> 找到的我吗？`;
			else if (domain === "so") text = `Hello！来自 360搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&q=")[1].split("&")[0]}</span> 找到的我吗？`;
			else if (domain === "google") text = `Hello！来自 谷歌搜索 的朋友<br>欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
			else text = `Hello！来自 <span>${referrer.hostname}</span> 的朋友`;
		} else {
			text = `欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
		}
		showMessage(text, 7000, 8);
	})();

	function showHitokoto() {
		// 增加 hitokoto.cn 的 API
		fetch("https://v1.hitokoto.cn")
			.then(response => response.json())
			.then(result => {
				const text = `这句一言来自 <span>「${result.from}」</span>，是 <span>${result.creator}</span> 在 hitokoto.cn 投稿的。`;
				showMessage(result.hitokoto, 6000, 9);
				setTimeout(() => {
					showMessage(text, 4000, 9);
				}, 6000);
			});
	}

	function showMessage(text, timeout, priority) {
		if (!text || (sessionStorage.getItem("waifu-text") && sessionStorage.getItem("waifu-text") > priority)) return;
		if (messageTimer) {
			clearTimeout(messageTimer);
			messageTimer = null;
		}
		text = randomSelection(text);
		sessionStorage.setItem("waifu-text", priority);
		const tips = document.getElementById("waifu-tips");
		tips.innerHTML = text;
		tips.classList.add("waifu-tips-active");
		messageTimer = setTimeout(() => {
			sessionStorage.removeItem("waifu-text");
			tips.classList.remove("waifu-tips-active");
		}, timeout);
	}

	(function initModel() {
		let modelId = localStorage.getItem("modelId"),
			modelTexturesId = localStorage.getItem("modelTexturesId");
		if (modelId === null) {
			// 首次访问加载 指定模型 的 指定材质
			modelId = 1; // 模型 ID
			modelTexturesId = 53; // 材质 ID
		}
		loadModel(modelId, modelTexturesId);
		fetch(config.waifuPath)
			.then(response => response.json())
			.then(result => {
				window.addEventListener("mouseover", event => {
					for (let { selector, text } of result.mouseover) {
						if (!event.target.matches(selector)) continue;
						text = randomSelection(text);
						text = text.replace("{text}", event.target.innerText);
						showMessage(text, 4000, 8);
						return;
					}
				});
				window.addEventListener("click", event => {
					for (let { selector, text } of result.click) {
						if (!event.target.matches(selector)) continue;
						text = randomSelection(text);
						text = text.replace("{text}", event.target.innerText);
						showMessage(text, 4000, 8);
						return;
					}
				});
				result.seasons.forEach(({ date, text }) => {
					const now = new Date(),
						after = date.split("-")[0],
						before = date.split("-")[1] || after;
					if ((after.split("/")[0] <= now.getMonth() + 1 && now.getMonth() + 1 <= before.split("/")[0]) && (after.split("/")[1] <= now.getDate() && now.getDate() <= before.split("/")[1])) {
						text = randomSelection(text);
						text = text.replace("{year}", now.getFullYear());
						//showMessage(text, 7000, true);
						messageArray.push(text);
					}
				});
			});
	})();

	async function loadModelList() {
		const response = await fetch(`${cdnPath}model_list.json`);
		modelList = await response.json();
	}

	async function loadModel(modelId, modelTexturesId, message) {
		localStorage.setItem("modelId", modelId);
		localStorage.setItem("modelTexturesId", modelTexturesId);
		showMessage(message, 4000, 10);
		if (useCDN) {
			if (!modelList) await loadModelList();
			const target = randomSelection(modelList.models[modelId]);
			loadlive2d("live2d", `${cdnPath}model/${target}/index.json`);
		} else {
			loadlive2d("live2d", `${apiPath}get/?id=${modelId}-${modelTexturesId}`);
			console.log(`Live2D 模型 ${modelId}-${modelTexturesId} 加载完成`);
		}
	}

	async function loadRandModel() {
		const modelId = localStorage.getItem("modelId"),
			modelTexturesId = localStorage.getItem("modelTexturesId");
		if (useCDN) {
			if (!modelList) await loadModelList();
			const target = randomSelection(modelList.models[modelId]);
			loadlive2d("live2d", `${cdnPath}model/${target}/index.json`);
			showMessage("我的新衣服好看嘛？", 4000, 10);
		} else {
			// 可选 "rand"(随机), "switch"(顺序)
			fetch(`${apiPath}rand_textures/?id=${modelId}-${modelTexturesId}`)
				.then(response => response.json())
				.then(result => {
					if (result.textures.id === 1 && (modelTexturesId === 1 || modelTexturesId === 0)) showMessage("我还没有其他衣服呢！", 4000, 10);
					else loadModel(modelId, result.textures.id, "我的新衣服好看嘛？");
				});
		}
	}

	async function loadOtherModel() {
		let modelId = localStorage.getItem("modelId");
		if (useCDN) {
			if (!modelList) await loadModelList();
			const index = (++modelId >= modelList.models.length) ? 0 : modelId;
			loadModel(index, 0, modelList.messages[index]);
		} else {
			fetch(`${apiPath}switch/?id=${modelId}`)
				.then(response => response.json())
				.then(result => {
					loadModel(result.model.id, 0, result.model.message);
				});
		}
	}
}

function initWidget(config, apiPath) {
	if (typeof config === "string") {
		config = {
			waifuPath: config,
			apiPath
		};
	}
	document.body.insertAdjacentHTML("beforeend", `<div id="waifu-toggle">
			<span>看板娘</span>
		</div>`);
	const toggle = document.getElementById("waifu-toggle");
	toggle.addEventListener("click", () => {
		toggle.classList.remove("waifu-toggle-active");
		if (toggle.getAttribute("first-time")) {
			loadWidget(config);
			toggle.removeAttribute("first-time");
		} else {
			localStorage.removeItem("waifu-display");
			document.getElementById("waifu").style.display = "";
			setTimeout(() => {
				document.getElementById("waifu").style.bottom = 0;
			}, 0);
		}
	});
	if (localStorage.getItem("waifu-display") && Date.now() - localStorage.getItem("waifu-display") <= 86400000) {
		toggle.setAttribute("first-time", true);
		setTimeout(() => {
			toggle.classList.add("waifu-toggle-active");
		}, 0);
	} else {
		loadWidget(config);
	}
}