From f134c4cf97efc07395e147f254912d75c726bbad Mon Sep 17 00:00:00 2001
From: Rene Saarsoo <nene@triin.net>
Date: Fri, 20 Nov 2020 13:21:54 +0200
Subject: [PATCH] Initial XP calculations

---
 src/stats/xp.test.ts | 80 ++++++++++++++++++++++++++++++++++++++++++++
 src/stats/xp.ts      | 20 +++++++++++
 2 files changed, 100 insertions(+)
 create mode 100644 src/stats/xp.test.ts
 create mode 100644 src/stats/xp.ts

diff --git a/src/stats/xp.test.ts b/src/stats/xp.test.ts
new file mode 100644
index 0000000..3c4819b
--- /dev/null
+++ b/src/stats/xp.test.ts
@@ -0,0 +1,80 @@
+import { xp } from "./xp";
+import { Interval } from "../ast";
+import { Duration } from "../Duration";
+import { ConstantIntensity, RangeIntensity } from "../Intensity";
+
+describe("xp()", () => {
+  describe("ConstantIntensity interval", () => {
+    const createTestInterval = (seconds: number): Interval => ({
+      type: "Interval",
+      duration: new Duration(seconds),
+      intensity: new ConstantIntensity(100),
+      comments: [],
+    });
+
+    [
+      [1, 0],
+      [2, 0],
+      [5, 0],
+      [10, 1],
+      [15, 2],
+      [30, 5],
+      [45, 8],
+      [50, 8],
+      [55, 9],
+      [56, 10],
+      [57, 10],
+      [58, 10],
+      [59, 10],
+      [60, 10],
+      [61, 10],
+      [62, 11],
+      [63, 11],
+      [64, 11],
+      [65, 11],
+      [1, 0],
+      [1, 0],
+    ].forEach(([seconds, expectedXp]) => {
+      it(`${seconds}s produces ${expectedXp} XP`, () => {
+        expect(xp([createTestInterval(seconds)])).toEqual(expectedXp);
+      });
+    });
+  });
+
+  describe("RangeIntensity interval", () => {
+    const createTestInterval = (seconds: number): Interval => ({
+      type: "Warmup",
+      duration: new Duration(seconds),
+      intensity: new RangeIntensity(50, 75),
+      comments: [],
+    });
+
+    [
+      [55, 5],
+      [56, 5],
+      [57, 5],
+      [58, 5],
+      [59, 5],
+      [60, 6],
+      [61, 6],
+      [5 * 60, 30],
+    ].forEach(([seconds, expectedXp]) => {
+      it(`${seconds}s produces ${expectedXp} XP`, () => {
+        expect(xp([createTestInterval(seconds)])).toEqual(expectedXp);
+      });
+    });
+  });
+
+  // Intervals
+  //
+  // 4 x 15s = 1min --> 11 XP
+  // 4 x 30s = 2min --> 23 XP
+  // 4 x 60s = 4min --> 47 XP
+
+  // Other XP
+  //
+  // 20 XP per km
+
+  // 221 km
+  // 6:42 of intervals
+});
diff --git a/src/stats/xp.ts b/src/stats/xp.ts
new file mode 100644
index 0000000..0cff315
--- /dev/null
+++ b/src/stats/xp.ts
@@ -0,0 +1,20 @@
+import { Interval } from "../ast";
+import { sum } from "ramda";
+import { RangeIntensity, ConstantIntensity, FreeIntensity } from "../Intensity";
+
+const intervalXp = ({ intensity, duration }: Interval): number => {
+  if (intensity instanceof RangeIntensity) {
+    // 6 XP per minute (1XP for every 10 seconds)
+    return Math.floor(duration.seconds / 10);
+  } else if (intensity instanceof ConstantIntensity) {
+    // 10 XP per minute (1XP for every 5.56 seconds)
+    return Math.floor(duration.seconds / 5.56);
+  } else if (intensity instanceof FreeIntensity) {
+    // 5 XP per minute
+    return Math.round(duration.seconds / 60) * 5;
+  } else {
+    throw new Error("Unknown type of intensity");
+  }
+};
+
+export const xp = (intervals: Interval[]): number => sum(intervals.map(intervalXp));