Support moons in LoathingDate

loathers · Nov 16, 2023 · 0f9e461 · 0f9e461
1 parent 72ab28e
commit 0f9e461
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diff --git a/src/clients/LoathingDate.test.ts b/src/clients/LoathingDate.test.ts
@@ -1,3 +1,4 @@
+import { dedent } from "ts-dedent";
 import { describe, expect, test } from "vitest";
 
 import { LoathingDate } from "./LoathingDate.js";
@@ -37,3 +38,29 @@ describe("Hamburglar", () => {
     expect(d.getHamburglarPhase()).toBe(0);
   });
 });
+
+describe("SVG", () => {
+  test("One example of SVG", () => {
+    const d = new LoathingDate(new Date(Date.UTC(2023, 10, 16, 12, 0, 0)));
+    expect(d.getMoonsAsSvg()).toBe(dedent`
+      <?xml version="1.0" encoding="UTF-8" standalone="no"?>
+      <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="110" height="30" style="dominant-baseline: hanging;">
+        <text x="10" y="2" font-size="30">🌘</text>
+        <text x="70" y="2" font-size="30">🌕</text>
+        <text x="87" y="11" font-size="10">🌑</text>
+      </svg>
+    `);
+  });
+
+  test("Another example of SVG", () => {
+    const d = new LoathingDate(new Date(Date.UTC(2023, 10, 15, 12, 0, 0)));
+    expect(d.getMoonsAsSvg()).toBe(dedent`
+      <?xml version="1.0" encoding="UTF-8" standalone="no"?>
+      <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="110" height="30" style="dominant-baseline: hanging;">
+        <text x="10" y="2" font-size="30">🌑</text>
+        <text x="70" y="2" font-size="30">🌕</text>
+        <text x="50" y="11" font-size="10">🌕</text>
+      </svg>
+    `);
+  });
+});
diff --git a/src/clients/LoathingDate.ts b/src/clients/LoathingDate.ts
@@ -1,3 +1,5 @@
+import { dedent } from "ts-dedent";
+
 export class LoathingDate {
   static EPOCH = new Date(Date.UTC(2003, 1, 1, 3, 30));
   static COLLISION = 1218;
@@ -80,6 +82,72 @@ export class LoathingDate {
     return (cycle * 2) % 11;
   }
 
+  getHamburglarLight() {
+    const g = this.getGrimacePhase();
+    const r = this.getRonaldPhase();
+    switch (this.getHamburglarPhase()) {
+      case 0:
+        return g > 0 && g < 5 ? -1 : 1;
+      case 1:
+        return g < 4 ? 1 : -1;
+      case 2:
+        return g > 3 ? 1 : 0;
+      case 4:
+        return g > 0 && g < 5 ? 1 : 0;
+      case 5:
+        return r > 3 ? 1 : 0;
+      case 7:
+        return r > 0 && r < 5 ? 1 : 0;
+      case 8:
+        return r > 0 && r < 5 ? -1 : 1;
+      case 9:
+        return r < 4 ? 1 : -1;
+      case 10:
+        return (r > 3 ? 1 : 0) + (g > 0 && g < 5 ? 1 : 0);
+      default:
+        return 0;
+    }
+  }
+
+  getMoonsAsSvg() {
+    const moonIcons = ["🌑", "🌘", "🌗", "🌖", "🌕", "🌔", "🌓", "🌒"];
+
+    const hamburglarPositions = [
+      73,
+      87,
+      100,
+      null,
+      60,
+      40,
+      null,
+      0,
+      13,
+      27,
+      50,
+    ];
+    const hamburglarPhase = this.getHamburglarPhase();
+    const hamburglarX = hamburglarPhase
+      ? hamburglarPositions[hamburglarPhase]
+      : null;
+    const hamburglarIcon = this.getHamburglarLight() > 0 ? "🌕" : "🌑";
+
+    return dedent`
+      <?xml version="1.0" encoding="UTF-8" standalone="no"?>
+      <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="110" height="30" style="dominant-baseline: hanging;">
+        <text x="10" y="2" font-size="30">${
+          moonIcons[this.getRonaldPhase()]
+        }</text>
+        <text x="70" y="2" font-size="30">${
+          moonIcons[this.getGrimacePhase()]
+        }</text>
+        ${
+          hamburglarX !== null &&
+          `<text x="${hamburglarX}" y="11" font-size="10">${hamburglarIcon}</text>`
+        }
+      </svg>
+    `;
+  }
+
   toString() {
     return `${this.getMonthName()} ${this.getDate()} Year ${this.getYear()}`;
   }