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

const KEYS = ['cash_like', 'receivables', 'investment', 'operating_assets'];
const NAMES = {
  cash_like: '类现金',
  receivables: '应收账款',
  investment: '投资资产',
  operating_assets: '经营类资产',
};
const COLORS = {
  cash_like: PALETTE.blue,
  receivables: PALETTE.orange,
  investment: PALETTE.purple,
  operating_assets: PALETTE.sage,
};
// 段内标签文字色：浅色段（经营类资产灰绿）用深字，深色段用白字
const INSIDE_LABEL_COLORS = {
  cash_like: '#fff',
  receivables: '#fff',
  investment: '#fff',
  operating_assets: PALETTE.ink,
};

/**
 * 泡泡玛特资产结构演变图
 * 堆叠柱状图展示资产配置（每段标数值），折线图展示总资产增长
 */
export function assetsChart(rows, { width, height, view = 'all' }) {
  const periods = col(rows, 'period');
  const totalMax = Math.max(...rows.map((r) => r.total_assets));
  // 轴上限随数据走（2025H2 总资产已 321 亿），矮段像素判定才有确定基准
  const axisMax = niceAxisMax(totalMax);
  const interval = axisMax % 7 === 0 ? axisMax / 7 : axisMax / 5;
  // 绘图区像素高：画布高 − grid top 145 − grid bottom 90
  const pxPerUnit = (height - LAYOUT.gridTop - 90) / axisMax;
  // 早期年份应收/投资不足 1 亿，矮段标签外置到柱体右侧扇形排开
  const rowOffsets = fanTinyLabelOffsets(rows, KEYS, pxPerUnit);

  return {
    backgroundColor: '#fff',
    title: {
      ...titleStyle,
      text: `泡泡玛特资产结构演变（${financialViewLabel(view)}）`,
      subtext: '单位：亿元；资产负债表为期末余额，H2 为年末时点而非全年累计',
    },
    legend: {
      ...legendStyle,
      top: LAYOUT.legendTop,
      data: [...KEYS.map((key) => NAMES[key]), '资产总计'],
    },
    grid: { left: 78, right: 82, top: LAYOUT.gridTop, bottom: 90 },
    tooltip: {
      trigger: 'axis',
      axisPointer: { type: 'shadow' },
      textStyle: { fontFamily: FONT },
    },
    xAxis: { ...standalonePeriodAxis, data: periods },
    yAxis: [
      {
        ...axisCommon,
        type: 'value',
        name: '金额（亿元）',
        nameLocation: 'middle',
        nameGap: 52,
        nameTextStyle: { color: PALETTE.grey, fontSize: 13, fontFamily: FONT },
        min: 0,
        max: axisMax,
        interval,
      },
      {
        ...axisCommon,
        type: 'value',
        name: '资产总计（亿元）',
        nameLocation: 'middle',
        nameGap: 58,
        nameRotate: -90,
        nameTextStyle: { color: PALETTE.grey, fontSize: 13, fontFamily: FONT },
        min: 0,
        max: axisMax,
        interval,
        splitLine: { show: false },
      },
    ],
    series: [
      ...KEYS.map((key, ci) => ({
        name: NAMES[key],
        type: 'bar',
        stack: 'assets',
        // 每段都标数值：矮段塞不进字的，外置到柱体右侧（机制同渠道金额图）
        data: rows.map((row, ri) => stackedSharePoint(row[key], {
          pxPerUnit,
          labelColor: INSIDE_LABEL_COLORS[key],
          dy: rowOffsets[ri][ci] ?? 0,
        })),
        itemStyle: { color: COLORS[key] },
        emphasis: { focus: 'series' },
        label: {
          show: true,
          position: 'inside',
          color: INSIDE_LABEL_COLORS[key],
          fontSize: 11,
          fontFamily: FONT,
          overflow: 'none',
          formatter: (p) => `${p.value.toFixed(1)}`,
        },
      })),
      {
        ...lineSeries({
          name: '资产总计',
          data: col(rows, 'total_assets'),
          color: PALETTE.red,
          labelPosition: 'top',
          formatter: (p) => p.value.toFixed(1),
          width: 3,
        }),
        yAxisIndex: 1,
        z: 10,
      },
    ],
    graphic: [
      ...watermarks(width, height),
      footnote('数据来源：泡泡玛特财报 | @Joey知行记'),
    ],
  };
}