<template>
	<div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from 'echarts';
require('echarts/theme/macarons'); // echarts theme
import resize from './mixins/resize';

export default {
	mixins: [resize],
	props: {
		className: {
			type: String,
			default: 'chart'
		},
		width: {
			type: String,
			default: '100%'
		},
		height: {
			type: String,
			default: '240px'
		},
		title: {
			type: String,
			default: '充值'
		},
		color: {
			type: String,
			default: '#3888fa'
		},
		areaColor: {
			type: String,
			default: '#f3f8ff'
		},
		autoResize: {
			type: Boolean,
			default: true
		},
		chartData: {
			type: Array,
			required: true
		}
	},
	data() {
		return {
			chart: null
		};
	},
	watch: {
		chartData: {
			deep: true,
			handler(val) {
				this.setOptions(val);
			}
		}
	},
	mounted() {
		this.$nextTick(() => {
			this.initChart();
		});
	},
	beforeDestroy() {
		if (!this.chart) {
			return;
		}
		this.chart.dispose();
		this.chart = null;
	},
	methods: {
		initChart() {
			this.chart = echarts.init(this.$el, 'macarons');
			this.setOptions(this.chartData);
		},
		setOptions(chartData) {
			let xAxisData = [];
			let seriesData = [];
			if (chartData) {
				chartData.forEach((item, index) => {
					xAxisData.push(item.name + '月');
					seriesData.push(item.value);
				});
			}
			this.chart.setOption({
				xAxis: {
					data: xAxisData,
					boundaryGap: false,
					axisTick: {
						show: false
					}
				},
				grid: {
					left: 10,
					right: 10,
					bottom: 20,
					top: 30,
					containLabel: true
				},
				tooltip: {
					trigger: 'axis',
					axisPointer: {
						type: 'cross'
					},
					padding: [5, 10]
				},
				yAxis: {
					axisTick: {
						show: false
					}
				},
				legend: {
					data: ['expected', 'actual']
				},
				series: [
					{
						name: this.title,
						smooth: true,
						type: 'line',
						itemStyle: {
							normal: {
								color: this.color,
								lineStyle: {
									color: this.color,
									width: 2
								},
								areaStyle: {
									color: this.areaColor
								}
							}
						},
						data: seriesData,
						animationDuration: 2800,
						animationEasing: 'quadraticOut'
					}
				]
			});
		}
	}
};
</script>
