From fdfad0b900855cc86bd0efef148f33a8c1037729 Mon Sep 17 00:00:00 2001
From: dLedda <dan.j.ledda@gmail.com>
Date: Fri, 6 Aug 2021 21:42:59 +0200
Subject: [PATCH] Started work on a beat data structure

---
 src/Beat.ts            | 49 ++++++++++++++++++++++++++++++++++++++++++
 src/BeatUnit.ts        |  8 +++++++
 src/tests.ts           |  0
 src/ui/DrumRows.svelte |  0
 4 files changed, 57 insertions(+)
 create mode 100644 src/Beat.ts
 create mode 100644 src/BeatUnit.ts
 create mode 100644 src/tests.ts
 create mode 100644 src/ui/DrumRows.svelte

diff --git a/src/Beat.ts b/src/Beat.ts
new file mode 100644
index 0000000..88d24cc
--- /dev/null
+++ b/src/Beat.ts
@@ -0,0 +1,49 @@
+import BeatUnit from "./BeatUnit";
+
+type BeatInitOptions = {
+    timeSig: {
+        up: number,
+        down: number,
+    },
+    bars: number,
+};
+
+export default class Beat {
+    private timeSigUp: number = 4;
+    private timeSigDown: number = 4;
+    private units: BeatUnit[] = [];
+
+    constructor(options?: BeatInitOptions) {
+        this.setTimeSignature(options.timeSig.up, options.timeSig.down);
+        this.setBars(options.bars);
+    }
+
+    setTimeSignature(up: number, down: number): void {
+        if (Beat.isValidTimeSigRange(up)) {
+            this.timeSigUp = up | 0;
+        }
+        if (Beat.isValidTimeSigRange(down)) {
+            this.timeSigDown = down | 0;
+        }
+    }
+
+    setBars(barCount: number): void {
+        if (barCount*this.timeSigUp < this.units.length) {
+            this.units.splice(barCount, this.units.length - barCount);
+        } else if (barCount > this.bars) {
+            for (let i = 0; i < barCount; i++) {
+                this.units.push(new BeatUnit());
+            }
+        }
+
+        this.bars = barCount;
+    }
+
+    stringify(): string {
+        return "I am a Beat";
+    }
+
+    private static isValidTimeSigRange(sig: number): boolean {
+        return sig >= 2 && sig <= 64;
+    }
+}
\ No newline at end of file
diff --git a/src/BeatUnit.ts b/src/BeatUnit.ts
new file mode 100644
index 0000000..b0b4677
--- /dev/null
+++ b/src/BeatUnit.ts
@@ -0,0 +1,8 @@
+export default class BeatUnit {
+    constructor() {
+    }
+
+    stringify(): string {
+        return "U";
+    }
+}
diff --git a/src/tests.ts b/src/tests.ts
new file mode 100644
index 0000000..e69de29
diff --git a/src/ui/DrumRows.svelte b/src/ui/DrumRows.svelte
new file mode 100644
index 0000000..e69de29