Implement SpeedFormatter.

2022-04-24 16:51:31 +02:00
parent 16f238f34b
commit db5c9479df
10 changed files with 220 additions and 85 deletions
@@ -0,0 +1,103 @@
+package de.dennisguse.opentracks.data.models;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.util.Pair;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.util.StringUtils;
+
+public class SpeedFormatter {
+
+    private final Resources resources;
+
+    private final int decimalCount;
+
+    private final boolean metricUnits;
+
+    private final boolean reportSpeedOrPace;
+
+    private SpeedFormatter(Resources resources, int decimalCount, boolean metricUnits, boolean reportSpeedOrPace) {
+        this.resources = resources;
+        this.decimalCount = decimalCount;
+        this.metricUnits = metricUnits;
+        this.reportSpeedOrPace = reportSpeedOrPace;
+    }
+
+    public String formatSpeed(Speed speed) {
+        Pair<String, String> distanceParts = getSpeedParts(speed);
+
+        return resources.getString(R.string.speed_with_unit, distanceParts.first, distanceParts.second);
+    }
+
+    /**
+     * Gets the formatted speed with unit.
+     *
+     * @return the formatted speed (or null) and it's unit as {@link Pair}
+     */
+    public Pair<String, String> getSpeedParts(Speed speed) {
+        int unitId;
+        if (metricUnits) {
+            unitId = reportSpeedOrPace ? R.string.unit_kilometer_per_hour : R.string.unit_minute_per_kilometer;
+        } else {
+            unitId = reportSpeedOrPace ? R.string.unit_mile_per_hour : R.string.unit_minute_per_mile;
+        }
+        String unitString = resources.getString(unitId);
+
+        if (speed == null) {
+            speed = Speed.zero();
+        }
+
+        if (reportSpeedOrPace) {
+            return new Pair<>(StringUtils.formatDecimal(speed.to(metricUnits), 1), unitString);
+        }
+
+        int pace = (int) speed.toPace(metricUnits).getSeconds();
+
+        int minutes = pace / 60;
+        int seconds = pace % 60;
+        return new Pair<>(resources.getString(R.string.time, minutes, seconds), unitString);
+    }
+
+    public static Builder Builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private int decimalCount;
+
+        private boolean metricUnits;
+
+        private boolean reportSpeedOrPace;
+
+        public Builder() {
+            decimalCount = 2;
+            metricUnits = true;
+            reportSpeedOrPace = true;
+        }
+
+        public Builder setDecimalCount(int decimalCount) {
+            this.decimalCount = decimalCount;
+            return this;
+        }
+
+        public Builder setMetricUnits(boolean metricUnits) {
+            this.metricUnits = metricUnits;
+            return this;
+        }
+
+        public Builder setReportSpeedOrPace(boolean reportSpeedOrPace) {
+            this.reportSpeedOrPace = reportSpeedOrPace;
+            return this;
+        }
+
+        public SpeedFormatter build(Resources resource) {
+            return new SpeedFormatter(resource, decimalCount, metricUnits, reportSpeedOrPace);
+        }
+
+        public SpeedFormatter build(Context context) {
+            return build(context.getResources());
+        }
+    }
+}