
const pieChart = () => {
    return {
        chart: null,

        init() {
            setTimeout(() => {
                this.drawChart(this.$wire)
            }, 0)
        },

        drawChart(component) {
            if (this.chart) {
                this.chart.destroy()
            }

            const title = component.get('pieChartModel.title');
            const animated = component.get('pieChartModel.animated') || false
            const dataLabels = component.get('pieChartModel.dataLabels') || {}
            const onSliceClickEventName = component.get('pieChartModel.onSliceClickEventName')
            const data = component.get('pieChartModel.data')
            const sparkline = component.get('pieChartModel.sparkline')

            const options = {
                series: data.map(item => item.value),

                chart: {
                    height: '100%',
                    type: 'pie',

                    ...sparkline,

                    animations: { enabled: animated },

                    events: {
                        dataPointSelection: function(event, chartContext, config) {
                            if (!onSliceClickEventName) {
                                return
                            }

                            const { dataPointIndex } = config
                            const slice = data[dataPointIndex]
                            component.call('onSliceClick', slice)
                        },
                    }
                },

                labels: data.map(item => item.title),

                dataLabels: dataLabels,

                colors: data.map(item => item.color),

                fill: {
                    opacity: component.get('pieChartModel.opacity'),
                },

                title: {
                    text: title,
                    align: 'center',
                },

                responsive: [
                    {
                        breakpoint: 600,
                        options: {
                            legend: {
                                position: 'bottom'
                            }
                        }
                    }
                ],

                legend: component.get('pieChartModel.legend') || {},
            };

            const colors = component.get('pieChartModel.colors');

            if (colors && colors.length > 0) {
                options['colors'] = colors
            }

            this.chart = new ApexCharts(this.$refs.container, options);
            this.chart.render();
        }
    }
}

export default pieChart
