Function generateTokenChart

src/components/Stats.tsx:703–785

(
  dailyTokens: DailyModelTokens[],
  models: string[],
  terminalWidth: number,
)

};

function generateTokenChart(
  dailyTokens: DailyModelTokens[],
  models: string[],
  terminalWidth: number,
): ChartOutput | null {
  if (dailyTokens.length < 2 || models.length === 0) {
    return null;
  }

  // Y-axis labels take about 6 characters, plus some padding
  // Cap at ~52 to align with heatmap width (1 year of data)
  const yAxisWidth = 7;
  const availableWidth = terminalWidth - yAxisWidth;
  const chartWidth = Math.min(52, Math.max(20, availableWidth));

  // Distribute data across the available chart width
  let recentData: DailyModelTokens[];
  if (dailyTokens.length >= chartWidth) {
    // More data than space: take most recent N days
    recentData = dailyTokens.slice(-chartWidth);
  } else {
    // Less data than space: expand by repeating each point
    const repeatCount = Math.floor(chartWidth / dailyTokens.length);
    recentData = [];
    for (const day of dailyTokens) {
      for (let i = 0; i < repeatCount; i++) {
        recentData.push(day);
      }
    }
  }

  // Color palette for different models - use theme colors
  const theme = getTheme(resolveThemeSetting(getGlobalConfig().theme));
  const colors = [themeColorToAnsi(theme.suggestion), themeColorToAnsi(theme.success), themeColorToAnsi(theme.warning)];

  // Prepare series data for each model
  const series: number[][] = [];
  const legend: ChartLegend[] = [];

  // Only show top 3 models to keep chart readable
  const topModels = models.slice(0, 3);

  for (let i = 0; i < topModels.length; i++) {
    const model = topModels[i]!;
    const data = recentData.map(day => day.tokensByModel[model] || 0);

    // Only include if there's actual data
    if (data.some(v => v > 0)) {
      series.push(data);
      // Use theme colors that match the chart
      const bulletColors = [theme.suggestion, theme.success, theme.warning];
      legend.push({
        model: renderModelName(model),
        coloredBullet: applyColor(figures.bullet, bulletColors[i % bulletColors.length] as Color),
      });
    }
  }