<template>
    <div class="chart-wrap">
        <div id="chartdiv" ref="chartdiv"></div>
    </div>
</template>
 
<script>
import * as am5 from '@amcharts/amcharts5';
import * as am5xy from '@amcharts/amcharts5/xy';
import am5themes_Animated from '@amcharts/amcharts5/themes/Animated';

export default {
    props: {
        setData: {
            type: Array,
            default: [],
        }, 
        mapping: {
            type: Array,
            default: [],
        },
        columnX: {
            type: String
        },
        color: {
            type: Array,
            default: [],
        },
    },
    data() {
        return {

        };
    },
    methods: {
        chartCreate: function (data, mapping, columnX, colors) {
            let chartWarp = this.$refs["chartdiv"]; // 차트 상위 div ref 매칭
            chartWarp.innerHTML = ""; // 차트 상위 div 내용 초기화 (기존 차트 삭제)
            let div = document.createElement("div"); // 차트를 담을 빈 div 생성 (차트 하위 div)
            div.style.width = "100%"; // 차트를 담을 div의 넓이
            div.style.height = "100%"; // 차트를 담을 div의 높이
            chartWarp.appendChild(div); // 차트 상위 div 안에 차트 하위 div를 추가
            let root = am5.Root.new(div); // 차트 하위 div에 차트(root) 담기
            this.charts = root; // 차트 정보 전역에 담기

            root._logo.dispose();

            // Set themes
            // https://www.amcharts.com/docs/v5/concepts/themes/
            root.setThemes([
                am5themes_Animated.new(root)
            ]);

            // Create chart
            // https://www.amcharts.com/docs/v5/charts/xy-chart/
            let chart = root.container.children.push(
                am5xy.XYChart.new(root, {
                    panX: false,
                    panY: false,
                    wheelX: "none",
                    wheelY: "none",
                    paddingLeft: 0,
                    layout: root.verticalLayout
                })
            );

            // Add cursor
            // https://www.amcharts.com/docs/v5/charts/xy-chart/cursor/
            let cursor = chart.set("cursor", am5xy.XYCursor.new(root, {}));
            cursor.lineY.set("visible", false);

            // Create axes
            // https://www.amcharts.com/docs/v5/charts/xy-chart/axes/
            let xRenderer = am5xy.AxisRendererX.new(root, {
                minGridDistance: 30,
                minorGridEnabled: true
            });

            let xAxis = chart.xAxes.push(
                am5xy.CategoryAxis.new(root, {
                    maxDeviation: 0,
                    categoryField: columnX,
                    renderer: xRenderer,
                    tooltip: am5.Tooltip.new(root, {
                        labelText: "{city}"
                    })
                })
            );
            
            xAxis.data.setAll(data);

            // let yAxis = chart.yAxes.push(
            //     am5xy.ValueAxis.new(root, {
            //         maxDeviation: 0.3,
            //         renderer: am5xy.AxisRendererY.new(root, {})
            //     })
            // );

            let yAxis = chart.yAxes.push(
                am5xy.ValueAxis.new(root, {
                    maxDeviation: 0.3,
                    renderer: am5xy.AxisRendererY.new(root, { opposite: false })
                })
            );
            
            const keyName = ['maximum', 'minimum']

            for(let i = 0; i < keyName.length; i++) {
                let key = keyName[i];
                let koreanKey = mapping[key];
                makeSeries(koreanKey, key, colors[i]);
            }

            // Create series
            // https://www.amcharts.com/docs/v5/charts/xy-chart/series/
            function makeSeries(name, fieldName, color) {
                let series = chart.series.push(
                    am5xy.ColumnSeries.new(root, {
                        name: name,
                        xAxis: xAxis,
                        yAxis: yAxis,
                        valueYField: fieldName,
                        sequencedInterpolation: true,
                        categoryXField: columnX,
                        fill: color,
                        tooltip: am5.Tooltip.new(root, {
                            labelText: "{name} : {valueY}"
                        })
                    })
                );

                series.columns.template.setAll({
                    fillOpacity: 0.9,
                    strokeOpacity: 0
                });


                /* series.columns.template.adapters.add("fill", function (fill, target) {
                    const dataIndex = series.dataItems.indexOf(target.dataItem);

                    // Check if the data index is valid
                    if (dataIndex !== -1) {
                        // Calculate the reverse index to apply colors from the end of the array
                        const reverseIndex = series.dataItems.length - 1 - dataIndex;

                        // Use the provided colors array
                        return color[reverseIndex % color.length];
                    } else {
                        // If data index is invalid, use the default chart colors
                        return chart.get("colors").getIndex(series.dataItems.indexOf(target.dataItem));
                    }
                }); */

                series.columns.template.adapters.add("stroke", (stroke, target) => {
                return chart.get("colors").getIndex(series.columns.indexOf(target));
                });

                series.data.setAll(data);
                series.appear(1000);
            }
            

            let lineSeries = chart.series.push(
                am5xy.LineSeries.new(root, {
                    name: "평균",
                    xAxis: xAxis,
                    yAxis: yAxis,
                    valueYField: "average",
                    sequencedInterpolation: true,
                    stroke: chart.get("colors").getIndex(13),
                    fill: chart.get("colors").getIndex(13),
                    categoryXField: "city",
                    tooltip: am5.Tooltip.new(root, {
                        labelText: "평균 : {valueY}"
                    })
                })
            );

            lineSeries.strokes.template.set("strokeWidth", 2);

            lineSeries.bullets.push(function () {
                return am5.Bullet.new(root, {
                    locationY: 1,
                    locationX: undefined,
                    sprite: am5.Circle.new(root, {
                        radius: 5,
                        fill: lineSeries.get("fill")
                    })
                });
            });

            // when data validated, adjust location of data item based on count
            lineSeries.events.on("datavalidated", function () {
                am5.array.each(lineSeries.dataItems, function (dataItem) {
                    // if count divides by two, location is 0 (on the grid)
                    if (
                        dataItem.dataContext.count / 2 ==
                        Math.round(dataItem.dataContext.count / 2)
                    ) {
                        dataItem.set("locationX", 0);
                    }
                    // otherwise location is 0.5 (middle)
                    else {
                        dataItem.set("locationX", 0.5);
                    }
                });
            });
            
            lineSeries.data.setAll(data);
            lineSeries.appear(1000);
            // let chartData = [];

            // process data ant prepare it for the chart
            // for (var providerName in data) {
            //     //첫번째 데이터 
            //     let providerData = data[providerName];


            //     // add data of one provider to temp array
            //     let tempArray = [];
            //     let count = 0;
            //     // add items
            //     for (var itemName in providerData) {
            //         if (itemName != "quantity") {
            //             count++;
            //             // we generate unique category for each column (providerName + "_" + itemName) and store realName
            //             tempArray.push({
            //                 name: itemName + count,
            //                 category: providerName + "_" + itemName,
            //                 realName: itemName,
            //                 value: providerData[itemName],
            //                 provider: providerName
            //             });
            //         }
            //     }
            //     // sort temp array
            //     tempArray.sort(function (a, b) {
            //         if (a.value > b.value) {
            //             return 1;
            //         } else if (a.value < b.value) {
            //             return -1;
            //         } else {
            //             return 0;
            //         }
            //     });
                
            //     console.log("chart data: ", tempArray);
            //     // add quantity and count to middle data item (line series uses it)
            //     let lineSeriesDataIndex = Math.floor(count / 2);
            //     tempArray[lineSeriesDataIndex].quantity = providerData.quantity;
            //     tempArray[lineSeriesDataIndex].count = count;
            //     // push to the final data
            //     am5.array.each(tempArray, function (item) {
            //         chartData.push(item);
            //     });

            //     // create range (the additional label at the bottom)

            //     let range = xAxis.makeDataItem({});
            //     xAxis.createAxisRange(range);

            //     range.set("category", tempArray[0].category);
            //     range.set("endCategory", tempArray[tempArray.length - 1].category);

            //     let label = range.get("label");

            //     label.setAll({
            //         text: tempArray[0].provider,
            //         dy: 0,
            //         fontWeight: "bold",
            //         tooltipText: tempArray[0].provider
            //     });

            //     // let tick = range.get("tick");
            //     // tick.setAll({ visible: true, strokeOpacity: 1, length: 50, location: 0 });

            //     let grid = range.get("grid");
            //     grid.setAll({ strokeOpacity: 1 });
            // }

            // // add range for the last grid
            // let range = xAxis.makeDataItem({});
            // xAxis.createAxisRange(range);
            // range.set("category", chartData[chartData.length - 1].category);
            // // let tick = range.get("tick");
            // // tick.setAll({ visible: true, strokeOpacity: 1, length: 50, location: 1 });

            // let grid = range.get("grid");
            // grid.setAll({ strokeOpacity: 1, location: 1 });



            

            // console.log("::::",series.data._values)
            let legend = chart.children.unshift(am5.Legend.new(root, {
                x: am5.percent(100), // 범례 중심 위치 (50: 중앙)
                centerX: am5.percent(80), // 범례 중심 위치 (50: 중앙)
                y:am5.percent(0),
                centerY: am5.percent(0), 
                marginBottom: 10,
                nameField: "value",
            }));
            legend.data.setAll(chart.series.values);

            // Make stuff animate on load
            // https://www.amcharts.com/docs/v5/concepts/animations/
            
            chart.appear(1000, 100);
        }
    },
    watch: {
        'setData': function (newData) { 
            this.chartCreate(newData, this.mapping, this.columnX, this.color)
        }
    },
    computed: {

    },
    components: {

    },
    mounted() {
    }
}
</script>
 
 
 