<template>
    <div class="chart-list">
        <div class="chart-item">
            <chart-box :name="`${props.areaName}作物种植面积占比`">
                <div class="box-content">
                    <div class="chart-dom">
                        <pie-chart :key="`pie-${activeBaseTab}`" :chartData="pieChartData" :totalArea="totalArea"></pie-chart>
                    </div>
                    <div class="box-bg">
                        <div class="legend-list">
                            <div class="legend-item" v-for="(item, index) in legendData" :key="index">
                                <span class="dot" :style="{ background: item.color }"></span>
                                <span class="text">
                                    {{ item.name }}
                                    <span class="percent">{{ item.percent }}%</span>
                                    <span class="line">|</span>
                                    <span class="value">{{ item.value }}亩</span>
                                </span>
                            </div>
                        </div>
                    </div>
                </div>
            </chart-box>
        </div>
        <div class="chart-item" v-show="activeBaseTab === '物候期分布' || activeBaseTab === '预警分布'">
            <chart-box :name="`${props.areaName}小麦物候进程分布`">
                <div class="box-content">
                    <div class="chart-dom">
                        <bar-chart :key="`region-${activeBaseTab}`" :chartData="regionChartData"></bar-chart>
                    </div>
                    <div class="box-bg">{{ regionSummaryText }}</div>
                </div>
            </chart-box>
        </div>
        <div class="chart-item" v-show="activeBaseTab === '作物分布'">
            <chart-box name="近三年主要作物种植面积变化趋势">
                <div class="box-content">
                    <div class="chart-dom">
                        <line-chart :key="`trend-${activeBaseTab}`" :chartData="areaTrendChartData"></line-chart>
                    </div>
                    <div class="box-bg">暂无数据</div>
                </div>
            </chart-box>
        </div>
        <div class="chart-item">
            <chart-box :name="threeTitle"> 
                <div class="box-content">
                    <div class="chart-dom">
                        <bar-chart :key="`yield-${activeBaseTab}`" :chartData="yieldChartData" :yAxisFormatter="yAxisFormatter"></bar-chart>
                    </div>
                    <div class="box-bg">{{ yieldSummaryText }}</div>
                </div>
            </chart-box>
        </div>
    </div>
</template>

<script setup>
import chartBox from "@/components/chartBox.vue";
import pieChart from "./pieChart.vue";
import lineChart from "./lineChart.vue";
import { computed, ref, watch,onMounted} from "vue";
import { pieOption } from "./chartOption.js";
import barChart from "./barChart.vue";

const props = defineProps({
    activeBaseTab: {
        type: String,
        default: "作物分布",
    },
    areaCode: {
        type: String,
        default: "156440000",
    },
    areaName: {
        type: String,
        default: "广东省",
    },
});

// 图表数据
const pieChartData = ref([]);
const totalArea = ref(0);

// 区域占比图表数据
const regionChartData = ref({
    categories: [], // 区域名称数组
    values: [], // 占比百分比数组
});

// 区域占比摘要文字
const regionSummaryText = ref("暂无数据");

// 预估产量图表数据
const yieldChartData = ref({
    categories: [], // 作物名称数组
    values: [], // 预估产量数组（单位：吨）
});

// 预估产量摘要文字
const yieldSummaryText = ref("暂无数据");

// 根据 activeBaseTab 动态设置 y 轴单位
const yAxisFormatter = computed(() => {
    return props.activeBaseTab === "物候期分布" ? "{value}亩" : "{value}吨";
});

// 种植面积趋势图表数据
const areaTrendChartData = ref({
    xAxisData: [], // 时间轴数据
    series: [], // 系列数据
});

// 计算图例数据
const legendData = computed(() => {
    if (!pieChartData.value.length || totalArea.value === 0) {
        return [];
    }
    return pieChartData.value.map((item, index) => {
        const percent = ((item.value / totalArea.value) * 100).toFixed(1);
        return {
            name: item.name,
            value: Math.round(item.value), // 显示整数
            percent: percent,
            color: pieOption.color[index % pieOption.color.length],
        };
    });
});

const threeTitle = ref(`${props.areaName}作物预估产量对比`);

// 监听 activeBaseTab 变化
watch(
    () => props.activeBaseTab,
    () => {
        initData();
    }
);

// 监听 areaCode 变化，当切换到物候期分布时重新获取数据
watch(
    () => props.areaCode,
    (newVal) => {
        if (newVal) {
            initData();
        }
    }
);

const currentYear = ref(2025);
const currentQuarter = ref(1);

// 监听 areaName 变化，更新标题
watch(
    () => props.areaName,
    () => {
        if (props.activeBaseTab === "物候期分布") {
            threeTitle.value = `${props.areaName}小麦预告产量统计`;
        } else if (props.activeBaseTab === "作物分布") {
            threeTitle.value = `${props.areaName}作物预估产量对比`;
        }
    }
);

onMounted(() => {
    // 初始化时调用一次
    initData();
    // eventBus.off("weatherTime:changeTime");
    // eventBus.on("weatherTime:changeTime", ({index, year, quarter}) => {
    //     currentYear.value = year;
    //     currentQuarter.value = quarter;
    //     initData() 
    // });
});

const initData = () => {
    // 切换 tab 时，先清空所有图表数据，避免显示旧数据
    fetchStatSpeciesAreaYield();
    if (props.activeBaseTab === "物候期分布") {
        // 清空其他 tab 的数据
        pieChartData.value = [];
        totalArea.value = 0;
        areaTrendChartData.value = { xAxisData: [], series: [] };
        
        threeTitle.value = `${props.areaName}小麦预告产量统计`;
        fetchStatPhenologyRatio();
        fetchStatRegionYieldRatio();
    } else if (props.activeBaseTab === "作物分布") {
        // 清空物候期分布的数据
        regionChartData.value = { categories: [], values: [] };
        regionSummaryText.value = "暂无数据";
        
        threeTitle.value = `${props.areaName}作物预估产量对比`;
        fetchAreaTrend();
    } else {
        // // 其他 tab（预警分布、农场分布、农服管理）时，清空所有图表数据
        // pieChartData.value = [];
        // totalArea.value = 0;
        // regionChartData.value = { categories: [], values: [] };
        // areaTrendChartData.value = { xAxisData: [], series: [] };
        // yieldChartData.value = { categories: [], values: [] };
        // regionSummaryText.value = "暂无数据";
        // yieldSummaryText.value = "暂无数据";
    }
};

//统计指定物种在下级区划中的预估产量占比
const fetchStatRegionYieldRatio = () => {
    const params = {
        speciesId: 1,
        adminCode: props.areaCode,
        adminLevel: "province",
    };
    VE_API.warning
        .fetchStatRegionYieldRatio(params)
        .then((res) => {
            if (res.code === 0 && res.data && res.data.length > 0) {
                // 转换接口数据为图表格式
                const categories = res.data.map((item) => item.adminName);
                // 如果是物候期分布，使用 expectYield（但单位显示为亩），否则使用 expectYield（单位显示为吨）
                const values = res.data.map((item) => parseFloat(item.expectYield.toFixed(2)));

                // 更新图表数据
                yieldChartData.value = {
                    categories,
                    values,
                };

                // 找到最大值的区域
                let maxValue = 0;
                let maxRegion = "";
                res.data.forEach((item) => {
                    if (item.expectYield > maxValue) {
                        maxValue = item.expectYield;
                        maxRegion = item.adminName;
                    }
                });

                // 更新摘要文字
                if (maxRegion) {
                    const maxValueFormatted = maxValue.toFixed(1);
                    const unit = props.activeBaseTab === "物候期分布" ? "亩" : "吨";
                    yieldSummaryText.value = `${maxRegion}的${
                        props.activeBaseTab === "物候期分布" ? "种植面积" : "预估产量"
                    }最大，为${maxValueFormatted}${unit}`;
                } else {
                    yieldSummaryText.value = "暂无数据";
                }
            } else {
                yieldChartData.value = {
                    categories: [],
                    values: [],
                };
                yieldSummaryText.value = "暂无数据";
            }
        })
        .catch((error) => {
            console.error("获取区域产量占比数据失败:", error);
            yieldChartData.value = {
                categories: [],
                values: [],
            };
            yieldSummaryText.value = "暂无数据";
        });
};

//统计指定物种在不同物候期下的面积占比
const fetchStatPhenologyRatio = () => {
    const params = {
        speciesId: 1,
        adminCode: props.areaCode,
        adminLevel: "province",
    };

    VE_API.warning
        .fetchStatPhenologyRatio(params)
        .then((res) => {
            if (res.code === 0 && res.data && res.data.length > 0) {
                console.log(res.data);
                // 转换接口数据为图表格式
                const categories = res.data.map((item) => item.phenologyName);
                const values = res.data.map((item) => parseFloat((item.areaRatio * 100).toFixed(2))); // 转换为百分比，保留两位小数

                // 更新图表数据
                regionChartData.value = {
                    categories,
                    values,
                };

                // 找到最大占比的物候期
                let maxRatio = 0;
                let maxPhenology = "";
                res.data.forEach((item) => {
                    if (item.areaRatio > maxRatio) {
                        maxRatio = item.areaRatio;
                        maxPhenology = item.phenologyName;
                    }
                });

                // 更新摘要文字
                if (maxPhenology) {
                    const maxPercent = (maxRatio * 100).toFixed(1);
                    regionSummaryText.value = `${maxPhenology}的种植面积最大，占比${maxPercent}%`;
                } else {
                    regionSummaryText.value = "暂无数据";
                }
            } else {
                regionChartData.value = {
                    categories: [],
                    values: [],
                };
                regionSummaryText.value = "暂无数据";
            }
        })
        .catch((error) => {
            console.error("获取物候期占比数据失败:", error);
            regionChartData.value = {
                categories: [],
                values: [],
            };
            regionSummaryText.value = "暂无数据";
        });
};

const fetchAreaTrend = () => {
    const params = {
        speciesIds: [1, 222, 60876],
        adminCode: props.areaCode,
        adminLevel: "province",
    };
    VE_API.warning.fetchAreaTrend(params).then((res) => {
        if (res.code === 0 && res.data && res.data.length > 0) {
            // 收集所有唯一的时间点（year-quarter组合）
            const timePointSet = new Set();
            res.data.forEach((species) => {
                species.timeSeries.forEach((item) => {
                    const timeKey = `${item.year}Q${item.quarter}`;
                    timePointSet.add(timeKey);
                });
            });

            // 转换为数组并排序
            const xAxisData = Array.from(timePointSet).sort((a, b) => {
                const [yearA, quarterA] = a.split("Q").map(Number);
                const [yearB, quarterB] = b.split("Q").map(Number);
                if (yearA !== yearB) return yearA - yearB;
                return quarterA - quarterB;
            });

            // 定义颜色映射（可以根据需要调整）
            const colorMap = {
                荔枝: "#2199F8",
                籼稻: "#178B00",
                小麦: "#FAA53D",
            };

            // 为每个作物创建系列数据
            const series = res.data.map((species) => {
                // 创建时间点到种植面积的映射
                const dataMap = new Map();
                species.timeSeries.forEach((item) => {
                    const timeKey = `${item.year}Q${item.quarter}`;
                    dataMap.set(timeKey, item.plantArea);
                });

                // 根据 xAxisData 顺序生成数据数组
                const data = xAxisData.map((timeKey) => {
                    return dataMap.has(timeKey) ? parseFloat(dataMap.get(timeKey).toFixed(2)) : null;
                });

                return {
                    name: species.speciesName,
                    type: "line",
                    smooth: true,
                    showSymbol: false,
                    data: data,
                    itemStyle: {
                        color: colorMap[species.speciesName] || "#2199F8",
                    },
                    lineStyle: {
                        color: colorMap[species.speciesName] || "#2199F8",
                    },
                };
            });

            // 更新图表数据
            areaTrendChartData.value = {
                xAxisData,
                series,
            };
        } else {
            console.log("空数据");
            // 接口返回空数据时，清空图表数据
            areaTrendChartData.value = {
                xAxisData: [],
                series: [],
            };
        }
    }).catch(() => {
        // 错误时也清空数据
        areaTrendChartData.value = {
            xAxisData: [],
            series: [],
        };
    });
};

const fetchStatSpeciesAreaYield = () => {
    const params = {
        year: 2025,
        adminCode: props.areaCode,
        adminLevel: null,
    };
    VE_API.warning.fetchStatSpeciesAreaYield(params).then((res) => {
        if (res.code === 0 && res.data && res.data.length > 0) {
            // 转换接口数据为图表格式（用于饼图）
            const chartData = res.data.map((item) => ({
                value: item.plantArea, // 种植面积
                name: item.speciesName, // 作物名称
                expectYield: item.expectYield, // 预估产量
                speciesId: item.speciesId, // 作物ID
            }));

            // 计算总种植面积
            const total = chartData.reduce((sum, item) => sum + item.value, 0);

            // 更新饼图数据
            pieChartData.value = chartData;
            totalArea.value = total;

            // 处理预估产量数据（用于柱状图）
            const categories = res.data.map((item) => item.speciesName);
            const values = res.data.map((item) => parseFloat(item.expectYield.toFixed(2))); // 保留两位小数

            // 更新预估产量图表数据
            yieldChartData.value = {
                categories,
                values,
            };

            // 找到最大预估产量的作物
            let maxYield = 0;
            let maxSpecies = "";
            res.data.forEach((item) => {
                if (item.expectYield > maxYield) {
                    maxYield = item.expectYield;
                    maxSpecies = item.speciesName;
                }
            });

            // 更新摘要文字
            if (maxSpecies) {
                const maxYieldFormatted = maxYield.toFixed(1);
                yieldSummaryText.value = `${maxSpecies}的预估产量最高，为${maxYieldFormatted}吨`;
            } else {
                yieldSummaryText.value = "暂无数据";
            }
        } else {
            // 接口返回空数据时，清空图表数据
            pieChartData.value = [];
            totalArea.value = 0;
            yieldChartData.value = {
                categories: [],
                values: [],
            };
            yieldSummaryText.value = "暂无数据";
        }
    }).catch((error) => {
        console.error("获取作物面积产量数据失败:", error);
        // 错误时也清空数据
        pieChartData.value = [];
        totalArea.value = 0;
        yieldChartData.value = {
            categories: [],
            values: [],
        };
        yieldSummaryText.value = "暂无数据";
    });
};
</script>

<style lang="scss" scoped>
.chart-list {
    width: 100%;
    height: 100%;
    .chart-item {
        width: 100%;
        height: 285px;
        box-sizing: border-box;
        margin-bottom: 10px;
        background: rgba(35, 35, 35, 1);
        border: 1px solid #444444;
        border-radius: 4px;
        .box-content {
            width: 100%;
            height: 100%;
        }
        .chart-dom {
            height: calc(100% - 61px);
            width: 100%;
        }
        .box-bg {
            border-radius: 2px 2px 0 0;
            font-size: 12px;
            padding: 6px 8px;
            box-sizing: border-box;
            height: 61px;
            overflow-y: auto;
            background: linear-gradient(180deg, rgb(85, 85, 85, 0.4) 0%, rgb(35, 35, 35, 1) 100%);

            .legend-list {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 8px 12px;
                height: 100%;
                font-size: 12px;

                .legend-item {
                    display: flex;
                    align-items: center;
                    gap: 6px;
                    line-height: 12px;

                    .dot {
                        width: 5px;
                        height: 5px;
                        border-radius: 50%;
                        flex-shrink: 0;
                    }

                    .text {
                        color: rgba(255, 255, 255, 1);
                        font-size: 12px;
                        white-space: nowrap;
                        .percent {
                            padding: 0 10px;
                        }
                        .line {
                            color: rgba(255, 255, 255, 0.2);
                            padding-right: 10px;
                        }
                    }
                }
            }
        }
    }
}
</style>
