saving progress, lots of charting decisions made

src/components/chart/services/scale.service.ts

@@ -0,0 +1,59 @@
+import { Injectable } from '@angular/core';
+import { ChartConfig } from '../chart-config';
+import { ChartAxis, ChartAxisPosition } from '../chart-type';
+
+@Injectable()
+export class ScaleService {
+  constructor() {}
+
+  scales(chart: ChartConfig, data: Record<string, any>[]): any {
+    const result: any = {};
+
+    let x = 0;
+    let y = 0;
+    (chart?.axis ?? []).forEach((axis: ChartAxis, index: number) => {
+      let scale = '';
+      let count = 0;
+      axis.position = axis.position ?? ChartAxisPosition.Bottom;
+      switch (axis.position) {
+        case ChartAxisPosition.Left:
+        case ChartAxisPosition.Right:
+          scale = 'y';
+          count = y;
+          ++y;
+          break;
+        case ChartAxisPosition.Bottom:
+        case ChartAxisPosition.Top:
+          scale = 'x';
+          count = x;
+          ++x;
+          break;
+      }
+      result[`${scale}${count === 0 ? '' : count}`] = this.getScale(axis);
+    });
+
+    return result;
+  }
+
+  private getScale(item: ChartAxis): Record<string, any> {
+    const opts: Record<string, any> = {};
+
+    if (item.stacked) {
+      opts['stacked'] = true;
+    }
+    if (item.position) {
+      opts['position'] = item.position;
+    }
+    if (item.stack) {
+      opts['stack'] = item.stack;
+    }
+    if (item.min) {
+      opts['min'] = item.min;
+    }
+    if (item.max) {
+      opts['max'] = item.max;
+    }
+
+    return opts;
+  }
+}