import * as zrUtil from 'zrender/src/core/util';
import zrender from 'zrender';
import localStore from 'storejs';
import Painter from './painter';
import Options from './options';
import MouseController from './mouseController';
import deviceState from './constant/deviceState';
import deviceType from './constant/deviceType';
import { selectSkinCode } from './config/deviceStyle';
import { deviceFactory, createBoundingRect, calculateDCenter } from './utils/parser';

const renderer = 'canvas';
const devicePixelRatio = 1;

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

		// 鼠标事件
		this.events = { __Pan: 'pan', __Zoom: 'zoom', Selected: 'selected', Contextmenu: 'contextmenu', DataZoom: 'dataZoom'};

		// 原始数据
		this.data = {};

		// 皮肤参数
		this.skinCode = '';

		// 皮肤风格
		this.style = this.loadStyle();

		// 设备数据
		this.mapDevice = {};

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

		this.initMapInstance(opts);
	}

	// 初始化属性有鼠标事件 缩放等
	initMapInstance(opts) {
		const width = opts.dom.clientWidth;
		const height = opts.dom.clientHeight;

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

		this.$options = new Options(Object.assign({ scaleRate: 1, offsetX: 0, offsetY: 0 }, opts.options || {}), (dataZoom) => { this.$mouseController.trigger(this.events.DataZoom, dataZoom); }); // 缩放
		this.$painter = new Painter(this);
		this.$painter.updateZrSize({width: this.$zr.getWidth(), height: this.$zr.getHeight()});
		this.$painter.updateTransform(this.$options);

		this.optionsHandler = this.setOptions.bind(this);

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

		this.$mouseController.on(this.events.__Pan, this.optionsHandler);
		this.$mouseController.on(this.events.__Zoom, this.optionsHandler);
	}

	loadStyle(skinCode) {
		return selectSkinCode(skinCode);
	}

	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;
			}, this);
		}, this);

		return defaultStateDict;
	}

	setMap(map, mapDevice) {
		// 保存皮肤类型
		if (map.skinVO) {
			this.skinCode = map.skinVO.code;
		}

		// 保存原始数据
		this.data = map;

		// 解析地图数据
		this.mapDevice = mapDevice;

		// 加载对应皮肤
		this.style = this.loadStyle(this.skinCode);

		// 数据加载完成 回调
		if (this.methods.dataLoaded instanceof Function) { this.methods.dataLoaded(this.mapDevice); }

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

		// 视图加载完成 回调
		if (this.methods.viewLoaded instanceof Function) { this.methods.viewLoaded(this.mapDevice); }

	}

	setDefaultState() {
		const list = [];

		Object.values(this.mapDevice).forEach(elem => {
			const code = elem.code;
			const type = elem._type;
			// 列车不需要设置默认状态
			type != deviceType.Train && list.push(Object.assign({ code, _type: type }, this.defaultStateDict[type]));
		});

		this.update(list);

		if (this.methods.stateLoaded instanceof Function) { this.methods.stateLoaded(list); }
	}

	setOptions(opts) {
		const options = this.pullBack(opts);
		this.$options.update(options);
		this.$painter.updateTransform(this.$options);

		if (this.$options.disabled == true) {
			this.$mouseController.disable();
		} else {
			this.$mouseController.enable(opts);
		}

		if (this.methods.optionsUpdate instanceof Function) { this.methods.optionsUpdate(this.$options); }
	}

	setCenter(deviceCode) {
		const device = this.mapDevice[deviceCode];
		if (device && device.instance) {
			var rect = createBoundingRect(device.instance);
			var dcenter = calculateDCenter(rect, { width: this.$zr.getWidth(), height: this.$zr.getHeight() });
			this.setOptions(dcenter);
		}
	}

	setLayerVisible(layer) {
		this.$painter.setLayerVisible(layer);
	}

	setLevelVisible(list) {
		this.$painter.setLevelVisible(list);
	}

	render(list) {
		(list || []).forEach(elem => {
			const code = elem.code;
			const type = elem._type;
			const oDevice = this.mapDevice[code] || deviceFactory(type, elem);
			const nDevice = Object.assign(oDevice || {}, elem);
			this.dataSync(nDevice);
			this.$painter.delete(oDevice);
			if (!elem._dispose) {
				this.mapDevice[code] = nDevice;
				this.$painter.add(nDevice);
			}
		});

		if (this.methods.viewUpdate instanceof Function) { this.methods.viewUpdate(list); }
	}

	// 中间处理
	hookHandle(oDevice, elem) {
		const code = elem.code;
		const type = elem._type;
		// 如果是延时计时，需要保存计数值到全局
		if (type === deviceType.StationCounter) {
			let val = '' + elem.val;
			if (val === '0' || !elem.val) {
				val = elem.val = localStore.get(code) || '0';
			}

			localStore(code, val);
		}

		for (var prop in elem) {
			if (elem[prop] != oDevice[prop]) {
				Object.assign(oDevice, elem);
				return true;
			}
		}

		return false;
	}

	// 后处理
	postHandle(list) {
		list.forEach(elem => {
			const code = elem.code;
			const type = elem._type;
			if (type == deviceType.Switch) {
				const item = this.mapDevice[code];
				if (item) {
					const sectionA = this.mapDevice[item.sectionACode];
					const sectionB = this.mapDevice[item.sectionBCode];
					const sectionC = this.mapDevice[item.sectionCCode];
					if (sectionA && sectionB && sectionC) {
						item['cutOff'] = sectionA.cutOff;
						item['sectionAstatus'] = sectionA.status;
						item['sectionBstatus'] = sectionB.status;
						item['sectionCstatus'] = sectionC.status;
					}
				}

				this.$painter.update(item);
			}

			if (type == deviceType.Section) {
				const item = this.mapDevice[code];
				if (item) {
					const swch = this.mapDevice[item.relSwitchCode];
					if (swch) {
						const sectionA = this.mapDevice[swch.sectionACode];
						const sectionB = this.mapDevice[swch.sectionBCode];
						const sectionC = this.mapDevice[swch.sectionCCode];
						if (sectionA && sectionB && sectionC) {
							swch['cutOff'] = sectionA.cutOff;
							swch['sectionAstatus'] = sectionA.status;
							swch['sectionBstatus'] = sectionB.status;
							swch['sectionCstatus'] = sectionC.status;
						}

						this.$painter.update(swch);
					}
				}
			}
		});
	}

	update(list) {
		(list || []).forEach(elem => {
			const code = elem.code;
			const type = elem._type;
			const oDevice = this.mapDevice[code] || deviceFactory(type, elem);
			if (elem.dispose) {
				this.$painter.delete(oDevice);
			} else {
				if (this.hookHandle(oDevice, elem)) {
					this.$painter.update(oDevice);
				}
			}
		});

		// 状态后处理
		this.postHandle(list || []);

		if (this.methods.stateUpdate instanceof Function) { this.methods.stateUpdate(list); }
	}

	pullBack(payload) {
		if (payload.type === 'zoom') {
			const zrWidth = this.$zr.getWidth();
			const zrHeight = this.$zr.getHeight();
			const originX = payload.originX || zrWidth / 2;
			const originY = payload.originY || zrHeight / 2;
			const x = (this.$options.offsetX + originX) / this.$options.scaleRate;
			const y = (this.$options.offsetY + originY) / this.$options.scaleRate;
			const newScaleRate = this.$options.getScaleRate(payload.scale);
			const dx = originX - (x * newScaleRate - this.$options.offsetX);
			const dy = originY - (y * newScaleRate - this.$options.offsetY);
			payload.dx = dx;
			payload.dy = dy;
		}

		return payload || {};
	}

	dataSync(model) {
		var prop = null;
		var type = model._type;
		var code = model.code;

		switch (type) {
		case deviceType.Link: prop = 'linkList'; break;
		case deviceType.Section: prop = 'sectionList'; break;
		case deviceType.Switch: prop = 'switchList'; break;
		case deviceType.Signal: prop = 'signalList'; break;
		case deviceType.Station: prop = 'stationList'; break;
		case deviceType.StationStand: prop = 'stationStandList'; break;
		case deviceType.StationControl: prop = 'stationControlList'; break;
		case deviceType.StationCounter: prop = 'stationCounterList'; break;
		case deviceType.ZcControl: prop = 'zcControlList'; break;
		case deviceType.StationDelayUnlock: prop = 'stationDelayUnlockList'; break;
		case deviceType.LcControl: prop = 'lcControlList'; break;
		case deviceType.LimitControl: prop = 'tempSpeedLimitList'; break;
		case deviceType.ImageControl: prop = 'imageControl'; break;
		case deviceType.Train: prop = 'trainList'; break;
		case deviceType.TrainWindow: prop = 'trainWindowList'; break;
		case deviceType.Line: prop = 'lineList'; break;
		case deviceType.Text: prop = 'textList'; break;
		}

		const list = this.data[prop] || [];
		const idex = list.findIndex(elem => { return elem.code == code; });
		if (list) {
			if (model._dispose) {
				idex >= 0 && list.splice(idex, 1);
			} else {
				const elem = list[idex];
				if (elem) {
					Object.keys(elem).forEach(key => {
						elem[key] = model[key];
					});
				} else {
					list.push(Object.assign({}, model));
				}
			}
		}
	}

	getZr() {
		return this.$zr;
	}

	getEvents() {
		return this.events;
	}

	getDeviceByCode(code) {
		return this.mapDevice[code];
	}

	getShapeTipPoint(opts) {
		const device = this.mapDevice[opts.code];
		if (device) {
			return this.$painter.getShapeTipPoint(device.instance, opts);
		}
	}

	resize(opt) {
		this.$zr.resize(opt);
		this.$painter.updateZrSize(opt);
	}

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

	clearTrainView() {
		this.$painter.clearLevel(deviceType.Train);
		zrUtil.each(Object.values(this.mapDevice), device => {
			if (device._type == deviceType.Train) {
				device.instance = null;
			}
		});
	}

	clear() {
		this.skinCode = '';
		this.style = {};
		this.mapDevice = {};
		this.$painter.clear();
	}

	dispose() {
		this.off(this.events.Pan, this.optionsHandler);
		this.off(this.events.Zoom, this.optionsHandler);

		this.clear();

		this.$mouseController.dispose();
		this.$zr && zrender.dispose(this.$zr);
		this.$painter.dispose();
	}

	on(eventname, cb, context) {
		const 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;
			case this.events.DataZoom:
				this.$mouseController.on(this.events.DataZoom, cb, context);
				break;
			}
		}
	}

	off(eventname, cb) {
		const 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;
			case this.events.DataZoom:
				this.$mouseController.off(this.events.DataZoom, cb);
				break;
			}
		}
	}
}

export default Jlmap;