import * as zrUtil from 'zrender/src/core/util';
import zrender from 'zrender';
import Painter from './painter';
import Options from './options';
import ProxyHandle from './proxyHandle';
import MouseController from './mouseController';
import deviceState from './config/deviceState';
import deviceStyle from './config/deviceStyle';
import deviceType from './config/deviceType';
import { parser, deviceFactory } from './utils/parser';

const renderer = 'canvas';
const devicePixelRatio = 2;

class Jmap {
	constructor(opts) {
		// 回调事件
		this.methods = opts.methods;

		// 鼠标事件
		this.Events = { Pan: 'pan', Zoom: 'zoom', Selected: 'selected', Contextmenu: 'contextmenu' };

		// 原始数据
		this.data = {};

		// 皮肤参数
		this.skinStyle = '';

		// 皮肤风格
		this.styleDict = {};

		// 设备数据
		this.mapDevice = {};

		// 代理数据
		this.proxyData = {};

		// 默认状态
		this.defaultStateDict = this.loadDefaultState();

		this.initMapInstance(opts);
	}

	initMapInstance(opts) {
		let width = opts.dom.clientWidth;
		let height = opts.dom.clientHeight;

		this.$zr = zrender.init(opts.dom, Object.assign({ renderer, devicePixelRatio, width, height }, opts.config));

		this.$options = new Options(Object.assign({ scaleRate: 1, offsetX: 0, offsetY: 0, }, opts.options || {}));

		this.$painter = new Painter(this);
		this.$painter.updateZoomTransform(this.$options);

		this.$mouseController = new MouseController(this);
		this.$mouseController.enable();

		this.$optionsHandler = this.setOptions.bind(this);
		this.$mouseController.on(this.Events.Pan, this.$optionsHandler);
		this.$mouseController.on(this.Events.Zoom, this.$optionsHandler);
	}

	loadData(data) {
		// 保存皮肤类型
		this.skinStyle = data.skinStyle;

		// 保存原始数据
		this.data = data;

		// 加载皮肤
		this.styleDict = this.loadStyle(this.skinStyle);

		// 解析地图数据
		this.mapDevice = parser(data, this.defaultStateDict);

		// 生成代理对象
		this.proxyData = new Proxy(this.mapDevice, new ProxyHandle(this.$painter));

		// 数据加载完成回调
		(this.methods.dataLoaded instanceof Function) && this.methods.dataLoaded();

		// 初次渲染视图
		this.$painter.repaint(this.mapDevice, this.styleDict);

		// 视图渲染完成回调
		(this.methods.viewLoaded instanceof Function) && this.methods.viewLoaded();
	}

	loadStyle(skinStyle) {
		return deviceStyle;
	}

	loadDefaultState() {
		const defaultStateDict = {};

		zrUtil.each(Object.keys(deviceState), (type) => {
			defaultStateDict[type] = {};
			zrUtil.each(Object.keys(deviceState[type] || {}), (state) => {
				defaultStateDict[type][state] = deviceState[type][state].Default;
			})
		})

		return defaultStateDict;
	}

	setDefaultState() {
		let list = [];

		Object.values(this.mapDevice).forEach(elem => {
			let code = elem._code;
			let type = elem._type;
			list.push(Object.assign({ code, type }, this.defaultStateDict[type]));
		})

		this.update(list);
	}

	setOptions(zoom) {
		this.$options.update(zoom);
		this.$painter.updateZoomTransform(this.$options);
	}

	syncData(model) {
		let code = model.code;
		let type = model.type;
		let dispose = model._dispose;

		let prop = null;
		switch (type) {
			case deviceType.Link: prop = 'linkList'; break;
		}

		let list = this.data[prop];
		if (list) {
			let idex = list.findIndex(elem => { return elem.code == code });
			if (idex >= 0) {
				dispose && list.splice(idex, 1);
			} else {
				list.push(model);
			}
		}
	}

	render(list) {
		(list || []).forEach(elem => {
			let type = elem.type;
			let code = elem.code;
			let device = this.proxyData[code] || deviceFactory(type, this.styleDict[type], elem);
			let model = Object.assign(device.model || {}, elem);
			delete this.proxyData[code];
			if (!elem._dispose) {
				device = this.proxyData[code] = Object.assign(device, { model });
			}

			this.syncData(model);
		})
	}

	update(list) {
		(list || []).forEach(elem => {
			let code = elem.code;
			if (elem._dispose) {
				delete this.proxyData[code];
			} else {
				let device = this.proxyData[code] || {};
				let state = Object.assign(device.state || {}, elem);
				this.proxyData[code] = Object.assign(device, { state });
			}
		})
	}

	getZr() {
		return this.$zr;
	}

	getPainter() {
		return this.$painter;
	}

	getEvents() {
		return this.Events;
	}

	getSkinStyle() {
		return this.skinStyle;
	}

	getStyleDict() {
		return this.styleDict;
	}

	getDefaultStateDict() {
		return this.defaultStateDict;
	}

	getMapDevice() {
		return this.mapDevice;
	}

	on(eventname, cb, context) {
		let idx = Object.values(this.Events).indexOf(eventname);
		if (idx >= 0) {
			switch (eventname) {
				case this.Events.Selected: {
					this.$mouseController.on(this.Events.Selected, cb, context);
					break;
				}
				case this.Events.Contextmenu: {
					this.$mouseController.on(this.Events.Contextmenu, cb, context);
					break;
				}
			}
		}
	}

	off(eventname, cb) {
		let idx = Object.values(this.Events).indexOf(eventname);
		if (idx >= 0) {
			switch (eventname) {
				case this.Events.Selected: {
					this.$mouseController.off(this.Events.Selected, cb);
					break;
				}
				case this.Events.Contextmenu: {
					this.$mouseController.off(this.Events.Contextmenu, cb);
					break;
				}
			}
		}
	}

	refresh() {
		this.$painter.refresh();
	}

	clear() {
		this.$painter.clear();
	}

	dispose() {
		this.off(this.Events.Pan, this.$optionsHandler);
		this.off(this.Events.Zoom, this.$optionsHandler);
		this.skinStyle = '';
		this.styleDict = {};
		this.mapDevice = {};
		this.proxyData = {};
		this.$zr && zrender.dispose(this.$zr);
		this.$painter.dispose();
	}
}

export default Jmap;