import { col } from '../csv.js';
import {
  CHANNEL_COLORS, PALETTE, FONT, axisCommon, standalonePeriodAxis, titleStyle, standardLegend,
  financialViewLabel, barSeries, stackedSharePoint, fanTinyLabelOffsets, footnote, watermarks, LAYOUT,
} from '../theme.js';

const CHANNELS = [
  { key: 'retail', name: '零售店', color: CHANNEL_COLORS.retail, labelColor: '#fff' },
  { key: 'online', name: '线上渠道', color: CHANNEL_COLORS.online, labelColor: '#fff' },
  { key: 'robot_store', name: '机器人商店', color: CHANNEL_COLORS.robotStore, labelColor: '#fff' },
  { key: 'wholesale', name: '批发及其他', color: CHANNEL_COLORS.wholesale, labelColor: PALETTE.ink },
];

/** 泡泡玛特全渠道收入占比：全部地区合并，每根柱按当期总收入归一化为 100%。 */
export function channelShareChart(rows, { width, height, view = 'all' }) {
  const periods = col(rows, 'period');
  const barWidth = view === 'all' ? 48 : 80;
  // 绘图区像素高：画布高 − grid top 145 − grid bottom 100；轴固定 0–100%
  const pxPerUnit = (height - LAYOUT.gridTop - 100) / 100;
  const seriesKeys = CHANNELS.map((item) => item.key);
  const rowOffsets = fanTinyLabelOffsets(rows, seriesKeys, pxPerUnit);

  return {
    backgroundColor: '#fff',
    title: {
      ...titleStyle,
      text: `泡泡玛特渠道收入占比（${financialViewLabel(view)}）`,
      subtext: '全部地区合并；归一化堆叠：每根柱为当期总收入的 100%',
    },
    legend: standardLegend(CHANNELS.map((item) => item.name)),
    tooltip: {
      trigger: 'axis',
      axisPointer: { type: 'shadow' },
      textStyle: { fontFamily: FONT },
      formatter: (params) => {
        const row = rows[periods.indexOf(params[0].axisValue)];
        return `<b>${params[0].axisValue}</b>　总收入 ${row.total_revenue.toFixed(2)} 亿元<br/>${params
          .filter((item) => item.value !== null)
          .slice()
          .reverse()
          .map((item) => `${item.marker}${item.seriesName}: ${item.value.toFixed(1)}%`)
          .join('<br/>')}`;
      },
    },
    grid: { left: 78, right: 42, top: LAYOUT.gridTop, bottom: 100 },
    xAxis: { ...standalonePeriodAxis, data: periods },
    yAxis: {
      ...axisCommon,
      type: 'value',
      min: 0,
      max: 100,
      interval: 20,
      axisLabel: { ...axisCommon.axisLabel, formatter: '{value}%' },
    },
    series: CHANNELS.map((item, ci) => barSeries({
      name: item.name,
      data: rows.map((row, ri) => stackedSharePoint(row[item.key], {
        pxPerUnit,
        labelColor: item.labelColor,
        dy: rowOffsets[ri][ci] ?? 0,
      })),
      color: item.color,
      barWidth,
      stack: 'channel-share',
      label: {
        show: true,
        position: 'inside',
        fontSize: 11,
        fontFamily: FONT,
        fontWeight: 500,
        formatter: (point) => `${point.value.toFixed(1)}%`,
      },
      emphasis: { focus: 'series' },
    })),
    graphic: [
      ...watermarks(width, height),
      footnote('数据来源：泡泡玛特分地区渠道收入披露（中国含港澳台）；H2为单半年（全年−H1）\n线上渠道含抽盒机、天猫、抖音、自研APP及官网等 | @Joey知行记'),
    ],
  };
}