Move to typescript

4 files changed, 355 insertions, 371 deletions

diff --git a/src/js/oneko.js b/src/js/oneko.js
deleted file mode 100644
index dcf927f..0000000
--- a/src/js/oneko.js
+++ /dev/null
@@ -1,284 +0,0 @@
-// oneko.js: https://github.com/adryd325/oneko.js
-
-export function initOneko() {
-  const isReducedMotion =
-    window.matchMedia(`(prefers-reduced-motion: reduce)`) === true ||
-    window.matchMedia(`(prefers-reduced-motion: reduce)`).matches === true;
-
-  if (isReducedMotion) return;
-
-  const nekoEl = document.createElement("div");
-  let persistPosition = true;
-
-  let nekoPosX = 32;
-  let nekoPosY = 32;
-
-  let mousePosX = 0;
-  let mousePosY = 0;
-
-  let frameCount = 0;
-  let idleTime = 0;
-  let idleAnimation = null;
-  let idleAnimationFrame = 0;
-
-  const nekoSpeed = 10;
-  const spriteSets = {
-    idle: [[-3, -3]],
-    alert: [[-7, -3]],
-    scratchSelf: [
-      [-5, 0],
-      [-6, 0],
-      [-7, 0],
-    ],
-    scratchWallN: [
-      [0, 0],
-      [0, -1],
-    ],
-    scratchWallS: [
-      [-7, -1],
-      [-6, -2],
-    ],
-    scratchWallE: [
-      [-2, -2],
-      [-2, -3],
-    ],
-    scratchWallW: [
-      [-4, 0],
-      [-4, -1],
-    ],
-    tired: [[-3, -2]],
-    sleeping: [
-      [-2, 0],
-      [-2, -1],
-    ],
-    N: [
-      [-1, -2],
-      [-1, -3],
-    ],
-    NE: [
-      [0, -2],
-      [0, -3],
-    ],
-    E: [
-      [-3, 0],
-      [-3, -1],
-    ],
-    SE: [
-      [-5, -1],
-      [-5, -2],
-    ],
-    S: [
-      [-6, -3],
-      [-7, -2],
-    ],
-    SW: [
-      [-5, -3],
-      [-6, -1],
-    ],
-    W: [
-      [-4, -2],
-      [-4, -3],
-    ],
-    NW: [
-      [-1, 0],
-      [-1, -1],
-    ],
-  };
-
-  function init() {
-    let nekoFile = "/oneko/oneko.gif";
-    const curScript = document.currentScript;
-    if (curScript && curScript.dataset.cat) {
-      nekoFile = curScript.dataset.cat;
-    }
-    if (curScript && curScript.dataset.persistPosition) {
-      if (curScript.dataset.persistPosition === "") {
-        persistPosition = true;
-      } else {
-        persistPosition = JSON.parse(
-          curScript.dataset.persistPosition.toLowerCase(),
-        );
-      }
-    }
-
-    if (persistPosition) {
-      let storedNeko = JSON.parse(window.localStorage.getItem("oneko"));
-      if (storedNeko !== null) {
-        nekoPosX = storedNeko.nekoPosX;
-        nekoPosY = storedNeko.nekoPosY;
-        mousePosX = storedNeko.mousePosX;
-        mousePosY = storedNeko.mousePosY;
-        frameCount = storedNeko.frameCount;
-        idleTime = storedNeko.idleTime;
-        idleAnimation = storedNeko.idleAnimation;
-        idleAnimationFrame = storedNeko.idleAnimationFrame;
-        nekoEl.style.backgroundPosition = storedNeko.bgPos;
-      }
-    }
-
-    nekoEl.id = "oneko";
-    nekoEl.ariaHidden = true;
-    nekoEl.style.width = "32px";
-    nekoEl.style.height = "32px";
-    nekoEl.style.position = "fixed";
-    nekoEl.style.pointerEvents = "none";
-    nekoEl.style.imageRendering = "pixelated";
-    nekoEl.style.left = `${nekoPosX - 16}px`;
-    nekoEl.style.top = `${nekoPosY - 16}px`;
-    nekoEl.style.zIndex = 2147483647;
-
-    nekoEl.style.backgroundImage = `url(${nekoFile})`;
-
-    document.body.appendChild(nekoEl);
-
-    document.addEventListener("mousemove", function (event) {
-      mousePosX = event.clientX;
-      mousePosY = event.clientY;
-    });
-
-    if (persistPosition) {
-      window.addEventListener("beforeunload", function (event) {
-        window.localStorage.setItem(
-          "oneko",
-          JSON.stringify({
-            nekoPosX: nekoPosX,
-            nekoPosY: nekoPosY,
-            mousePosX: mousePosX,
-            mousePosY: mousePosY,
-            frameCount: frameCount,
-            idleTime: idleTime,
-            idleAnimation: idleAnimation,
-            idleAnimationFrame: idleAnimationFrame,
-            bgPos: nekoEl.style.backgroundPosition,
-          }),
-        );
-      });
-    }
-
-    window.requestAnimationFrame(onAnimationFrame);
-  }
-
-  let lastFrameTimestamp;
-
-  function onAnimationFrame(timestamp) {
-    // Stops execution if the neko element is removed from DOM
-    if (!nekoEl.isConnected) {
-      return;
-    }
-    if (!lastFrameTimestamp) {
-      lastFrameTimestamp = timestamp;
-    }
-    if (timestamp - lastFrameTimestamp > 100) {
-      lastFrameTimestamp = timestamp;
-      frame();
-    }
-    window.requestAnimationFrame(onAnimationFrame);
-  }
-
-  function setSprite(name, frame) {
-    const sprite = spriteSets[name][frame % spriteSets[name].length];
-    nekoEl.style.backgroundPosition = `${sprite[0] * 32}px ${sprite[1] * 32}px`;
-  }
-
-  function resetIdleAnimation() {
-    idleAnimation = null;
-    idleAnimationFrame = 0;
-  }
-
-  function idle() {
-    idleTime += 1;
-
-    // every ~ 20 seconds
-    if (
-      idleTime > 10 &&
-      Math.floor(Math.random() * 200) == 0 &&
-      idleAnimation == null
-    ) {
-      let avalibleIdleAnimations = ["sleeping", "scratchSelf"];
-      if (nekoPosX < 32) {
-        avalibleIdleAnimations.push("scratchWallW");
-      }
-      if (nekoPosY < 32) {
-        avalibleIdleAnimations.push("scratchWallN");
-      }
-      if (nekoPosX > window.innerWidth - 32) {
-        avalibleIdleAnimations.push("scratchWallE");
-      }
-      if (nekoPosY > window.innerHeight - 32) {
-        avalibleIdleAnimations.push("scratchWallS");
-      }
-      idleAnimation =
-        avalibleIdleAnimations[
-          Math.floor(Math.random() * avalibleIdleAnimations.length)
-        ];
-    }
-
-    switch (idleAnimation) {
-      case "sleeping":
-        if (idleAnimationFrame < 8) {
-          setSprite("tired", 0);
-          break;
-        }
-        setSprite("sleeping", Math.floor(idleAnimationFrame / 4));
-        if (idleAnimationFrame > 192) {
-          resetIdleAnimation();
-        }
-        break;
-      case "scratchWallN":
-      case "scratchWallS":
-      case "scratchWallE":
-      case "scratchWallW":
-      case "scratchSelf":
-        setSprite(idleAnimation, idleAnimationFrame);
-        if (idleAnimationFrame > 9) {
-          resetIdleAnimation();
-        }
-        break;
-      default:
-        setSprite("idle", 0);
-        return;
-    }
-    idleAnimationFrame += 1;
-  }
-
-  function frame() {
-    frameCount += 1;
-    const diffX = nekoPosX - mousePosX;
-    const diffY = nekoPosY - mousePosY;
-    const distance = Math.sqrt(diffX ** 2 + diffY ** 2);
-
-    if (distance < nekoSpeed || distance < 48) {
-      idle();
-      return;
-    }
-
-    idleAnimation = null;
-    idleAnimationFrame = 0;
-
-    if (idleTime > 1) {
-      setSprite("alert", 0);
-      // count down after being alerted before moving
-      idleTime = Math.min(idleTime, 7);
-      idleTime -= 1;
-      return;
-    }
-
-    let direction;
-    direction = diffY / distance > 0.5 ? "N" : "";
-    direction += diffY / distance < -0.5 ? "S" : "";
-    direction += diffX / distance > 0.5 ? "W" : "";
-    direction += diffX / distance < -0.5 ? "E" : "";
-    setSprite(direction, frameCount);
-
-    nekoPosX -= (diffX / distance) * nekoSpeed;
-    nekoPosY -= (diffY / distance) * nekoSpeed;
-
-    nekoPosX = Math.min(Math.max(16, nekoPosX), window.innerWidth - 16);
-    nekoPosY = Math.min(Math.max(16, nekoPosY), window.innerHeight - 16);
-
-    nekoEl.style.left = `${nekoPosX - 16}px`;
-    nekoEl.style.top = `${nekoPosY - 16}px`;
-  }
-
-  init();
-}
diff --git a/src/js/oneko.ts b/src/js/oneko.ts
new file mode 100644
index 0000000..236c7cb
--- /dev/null
+++ b/src/js/oneko.ts
@@ -0,0 +1,277 @@
+// oneko.js: https://github.com/adryd325/oneko.js
+
+export function initOneko(): void {
+    const isReducedMotion =
+        window.matchMedia('(prefers-reduced-motion: reduce)') === true ||
+        window.matchMedia('(prefers-reduced-motion: reduce)').matches === true;
+
+    if (isReducedMotion) return;
+
+    const nekoEl = document.createElement('div');
+    let persistPosition = true;
+
+    let nekoPosX = 32;
+    let nekoPosY = 32;
+
+    let mousePosX = 0;
+    let mousePosY = 0;
+
+    let frameCount = 0;
+    let idleTime = 0;
+    let idleAnimation: string | null = null;
+    let idleAnimationFrame = 0;
+
+    const nekoSpeed = 10;
+    const spriteSets: Record<string, [number, number][]> = {
+        idle: [[-3, -3]],
+        alert: [[-7, -3]],
+        scratchSelf: [
+            [-5, 0],
+            [-6, 0],
+            [-7, 0],
+        ],
+        scratchWallN: [
+            [0, 0],
+            [0, -1],
+        ],
+        scratchWallS: [
+            [-7, -1],
+            [-6, -2],
+        ],
+        scratchWallE: [
+            [-2, -2],
+            [-2, -3],
+        ],
+        scratchWallW: [
+            [-4, 0],
+            [-4, -1],
+        ],
+        tired: [[-3, -2]],
+        sleeping: [
+            [-2, 0],
+            [-2, -1],
+        ],
+        N: [
+            [-1, -2],
+            [-1, -3],
+        ],
+        NE: [
+            [0, -2],
+            [0, -3],
+        ],
+        E: [
+            [-3, 0],
+            [-3, -1],
+        ],
+        SE: [
+            [-5, -1],
+            [-5, -2],
+        ],
+        S: [
+            [-6, -3],
+            [-7, -2],
+        ],
+        SW: [
+            [-5, -3],
+            [-6, -1],
+        ],
+        W: [
+            [-4, -2],
+            [-4, -3],
+        ],
+        NW: [
+            [-1, 0],
+            [-1, -1],
+        ],
+    };
+
+    function init(): void {
+        const assetBase = window.ASSET_BASE || '';
+        let nekoFile = `${assetBase}/oneko/oneko.gif`;
+        const curScript = document.currentScript as HTMLScriptElement;
+        if (curScript?.dataset.cat) {
+            nekoFile = curScript.dataset.cat;
+        }
+        if (curScript?.dataset.persistPosition) {
+            if (curScript.dataset.persistPosition === '') {
+                persistPosition = true;
+            } else {
+                persistPosition = JSON.parse(curScript.dataset.persistPosition.toLowerCase());
+            }
+        }
+
+        if (persistPosition) {
+            const storedNekoStr = window.localStorage.getItem('oneko');
+            const storedNeko = storedNekoStr ? JSON.parse(storedNekoStr) : null;
+            if (storedNeko !== null) {
+                nekoPosX = storedNeko.nekoPosX;
+                nekoPosY = storedNeko.nekoPosY;
+                mousePosX = storedNeko.mousePosX;
+                mousePosY = storedNeko.mousePosY;
+                frameCount = storedNeko.frameCount;
+                idleTime = storedNeko.idleTime;
+                idleAnimation = storedNeko.idleAnimation;
+                idleAnimationFrame = storedNeko.idleAnimationFrame;
+                nekoEl.style.backgroundPosition = storedNeko.bgPos;
+            }
+        }
+
+        nekoEl.id = 'oneko';
+        nekoEl.ariaHidden = 'true';
+        nekoEl.style.width = '32px';
+        nekoEl.style.height = '32px';
+        nekoEl.style.position = 'fixed';
+        nekoEl.style.pointerEvents = 'none';
+        nekoEl.style.imageRendering = 'pixelated';
+        nekoEl.style.left = `${nekoPosX - 16}px`;
+        nekoEl.style.top = `${nekoPosY - 16}px`;
+        nekoEl.style.zIndex = '2147483647';
+
+        nekoEl.style.backgroundImage = `url(${nekoFile})`;
+
+        document.body.appendChild(nekoEl);
+
+        document.addEventListener('mousemove', (event: MouseEvent) => {
+            mousePosX = event.clientX;
+            mousePosY = event.clientY;
+        });
+
+        if (persistPosition) {
+            window.addEventListener('beforeunload', () => {
+                window.localStorage.setItem(
+                    'oneko',
+                    JSON.stringify({
+                        nekoPosX: nekoPosX,
+                        nekoPosY: nekoPosY,
+                        mousePosX: mousePosX,
+                        mousePosY: mousePosY,
+                        frameCount: frameCount,
+                        idleTime: idleTime,
+                        idleAnimation: idleAnimation,
+                        idleAnimationFrame: idleAnimationFrame,
+                        bgPos: nekoEl.style.backgroundPosition,
+                    })
+                );
+            });
+        }
+
+        window.requestAnimationFrame(onAnimationFrame);
+    }
+
+    let lastFrameTimestamp: number | undefined;
+
+    function onAnimationFrame(timestamp: number): void {
+        if (!nekoEl.isConnected) {
+            return;
+        }
+        if (!lastFrameTimestamp) {
+            lastFrameTimestamp = timestamp;
+        }
+        if (lastFrameTimestamp && timestamp - lastFrameTimestamp > 100) {
+            lastFrameTimestamp = timestamp;
+            frame();
+        }
+        window.requestAnimationFrame(onAnimationFrame);
+    }
+
+    function setSprite(name: string, frame: number): void {
+        const sprite = spriteSets[name][frame % spriteSets[name].length];
+        nekoEl.style.backgroundPosition = `${sprite[0] * 32}px ${sprite[1] * 32}px`;
+    }
+
+    function resetIdleAnimation(): void {
+        idleAnimation = null;
+        idleAnimationFrame = 0;
+    }
+
+    function idle(): void {
+        idleTime += 1;
+
+        // every ~ 20 seconds
+        if (idleTime > 10 && Math.floor(Math.random() * 200) === 0 && idleAnimation == null) {
+            const avalibleIdleAnimations: string[] = ['sleeping', 'scratchSelf'];
+            if (nekoPosX < 32) {
+                avalibleIdleAnimations.push('scratchWallW');
+            }
+            if (nekoPosY < 32) {
+                avalibleIdleAnimations.push('scratchWallN');
+            }
+            if (nekoPosX > window.innerWidth - 32) {
+                avalibleIdleAnimations.push('scratchWallE');
+            }
+            if (nekoPosY > window.innerHeight - 32) {
+                avalibleIdleAnimations.push('scratchWallS');
+            }
+            idleAnimation =
+                avalibleIdleAnimations[Math.floor(Math.random() * avalibleIdleAnimations.length)];
+        }
+
+        switch (idleAnimation) {
+            case 'sleeping':
+                if (idleAnimationFrame < 8) {
+                    setSprite('tired', 0);
+                    break;
+                }
+                setSprite('sleeping', Math.floor(idleAnimationFrame / 4));
+                if (idleAnimationFrame > 192) {
+                    resetIdleAnimation();
+                }
+                break;
+            case 'scratchWallN':
+            case 'scratchWallS':
+            case 'scratchWallE':
+            case 'scratchWallW':
+            case 'scratchSelf':
+                setSprite(idleAnimation, idleAnimationFrame);
+                if (idleAnimationFrame > 9) {
+                    resetIdleAnimation();
+                }
+                break;
+            default:
+                setSprite('idle', 0);
+                return;
+        }
+        idleAnimationFrame += 1;
+    }
+
+    function frame(): void {
+        frameCount += 1;
+        const diffX = nekoPosX - mousePosX;
+        const diffY = nekoPosY - mousePosY;
+        const distance = Math.sqrt(diffX ** 2 + diffY ** 2);
+
+        if (distance < nekoSpeed || distance < 48) {
+            idle();
+            return;
+        }
+
+        idleAnimation = null;
+        idleAnimationFrame = 0;
+
+        if (idleTime > 1) {
+            setSprite('alert', 0);
+            // count down after being alerted before moving
+            idleTime = Math.min(idleTime, 7);
+            idleTime -= 1;
+            return;
+        }
+
+        let direction = '';
+        direction += diffY / distance > 0.5 ? 'N' : '';
+        direction += diffY / distance < -0.5 ? 'S' : '';
+        direction += diffX / distance > 0.5 ? 'W' : '';
+        direction += diffX / distance < -0.5 ? 'E' : '';
+        setSprite(direction, frameCount);
+
+        nekoPosX -= (diffX / distance) * nekoSpeed;
+        nekoPosY -= (diffY / distance) * nekoSpeed;
+
+        nekoPosX = Math.min(Math.max(16, nekoPosX), window.innerWidth - 16);
+        nekoPosY = Math.min(Math.max(16, nekoPosY), window.innerHeight - 16);
+
+        nekoEl.style.left = `${nekoPosX - 16}px`;
+        nekoEl.style.top = `${nekoPosY - 16}px`;
+    }
+
+    init();
+}
diff --git a/src/js/script.js b/src/js/script.js
deleted file mode 100644
index 8ba3d82..0000000
--- a/src/js/script.js
+++ /dev/null
@@ -1,87 +0,0 @@
-import Prism from 'prismjs';
-import 'prismjs/components/prism-javascript';
-import 'prismjs/components/prism-css';
-import 'prismjs/components/prism-markup';
-import { initOneko } from './oneko.js';
-
-(() => {
-  const toggleButton = document.getElementById("theme-toggle");
-  const html = document.documentElement;
-
-  const sessionTheme = sessionStorage.getItem("theme");
-  const systemPrefersDark = window.matchMedia(
-    "(prefers-color-scheme: dark)",
-  ).matches;
-
-  const initialTheme = sessionTheme || (systemPrefersDark ? "dark" : "light");
-
-  if (initialTheme === "dark") {
-    html.setAttribute("data-theme", "dark");
-    toggleButton.checked = true;
-  }
-
-  toggleButton.addEventListener("change", () => {
-    const theme = html.getAttribute("data-theme");
-
-    if (theme === "dark") {
-      html.removeAttribute("data-theme");
-      sessionStorage.setItem("theme", "light");
-      toggleButton.checked = false;
-    } else {
-      html.setAttribute("data-theme", "dark");
-      sessionStorage.setItem("theme", "dark");
-      toggleButton.checked = true;
-    }
-  });
-})();
-
-(() => {
-  const colors = [
-    "#ff69b4",
-    "#b19cd9",
-    "#8b6f47",
-    "#ff85c0",
-    "#c4b5fd",
-    "#d4a574",
-  ];
-  const shapes = ["❀", "✿", "✽", "✾", "✻", "❊", "❋", "✼"];
-
-  document.addEventListener("mousemove", (e) => {
-    createParticle(e.clientX, e.clientY);
-  });
-
-  const createParticle = (x, y) => {
-    const particle = document.createElement("div");
-    particle.className = "fairy-dust";
-
-    const shape = shapes[Math.floor(Math.random() * shapes.length)];
-    const size = Math.random() * 8 + 6;
-    const color = colors[Math.floor(Math.random() * colors.length)];
-    const offsetX = (Math.random() - 0.5) * 20;
-    const offsetY = (Math.random() - 0.5) * 20;
-    const rotation = Math.random() * 360;
-
-    particle.textContent = shape;
-    particle.style.cssText = `
-      position: fixed;
-      left: ${x + offsetX}px;
-      top: ${y + offsetY}px;
-      font-size: ${size}px;
-      color: ${color};
-      opacity: 0.4;
-      pointer-events: none;
-      z-index: 9001; /* it's over 9000 */
-      line-height: 1;
-      transform: rotate(${rotation}deg);
-      animation: fairy-float 0.8s ease-out forwards;
-    `;
-
-    document.body.appendChild(particle);
-    setTimeout(() => particle.remove(), 800);
-  };
-})();
-
-document.addEventListener('DOMContentLoaded', () => {
-  Prism.highlightAll();
-  initOneko();
-});
diff --git a/src/js/script.ts b/src/js/script.ts
new file mode 100644
index 0000000..e0b0b85
--- /dev/null
+++ b/src/js/script.ts
@@ -0,0 +1,78 @@
+import Prism from 'prismjs';
+import 'prismjs/components/prism-javascript';
+import 'prismjs/components/prism-css';
+import 'prismjs/components/prism-markup';
+import { initOneko } from './oneko';
+
+(() => {
+    const toggleButton = document.getElementById('theme-toggle') as HTMLInputElement;
+    const html = document.documentElement;
+
+    const sessionTheme = sessionStorage.getItem('theme');
+    const systemPrefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
+
+    const initialTheme = sessionTheme || (systemPrefersDark ? 'dark' : 'light');
+
+    if (initialTheme === 'dark') {
+        html.setAttribute('data-theme', 'dark');
+        toggleButton.checked = true;
+    }
+
+    toggleButton.addEventListener('change', () => {
+        const theme = html.getAttribute('data-theme');
+
+        if (theme === 'dark') {
+            html.removeAttribute('data-theme');
+            sessionStorage.setItem('theme', 'light');
+            toggleButton.checked = false;
+        } else {
+            html.setAttribute('data-theme', 'dark');
+            sessionStorage.setItem('theme', 'dark');
+            toggleButton.checked = true;
+        }
+    });
+})();
+
+(() => {
+    const colors = ['#ff69b4', '#b19cd9', '#8b6f47', '#ff85c0', '#c4b5fd', '#d4a574'];
+    const shapes = ['❀', '✿', '✽', '✾', '✻', '❊', '❋', '✼'];
+
+    document.addEventListener('mousemove', (e: MouseEvent) => {
+        createParticle(e.clientX, e.clientY);
+    });
+
+    const createParticle = (x: number, y: number) => {
+        const particle = document.createElement('div');
+        particle.className = 'fairy-dust';
+
+        const shape = shapes[Math.floor(Math.random() * shapes.length)];
+        const size = Math.random() * 8 + 6;
+        const color = colors[Math.floor(Math.random() * colors.length)];
+        const offsetX = (Math.random() - 0.5) * 20;
+        const offsetY = (Math.random() - 0.5) * 20;
+        const rotation = Math.random() * 360;
+
+        particle.textContent = shape;
+        particle.style.cssText = `
+      position: fixed;
+      left: ${x + offsetX}px;
+      top: ${y + offsetY}px;
+      font-size: ${size}px;
+      color: ${color};
+      opacity: 0.4;
+      pointer-events: none;
+      z-index: 9001; /* it's over 9000 */
+      line-height: 1;
+      transform: rotate(${rotation}deg);
+      animation: fairy-float 0.8s ease-out forwards;
+    `;
+
+        document.body.appendChild(particle);
+        setTimeout(() => particle.remove(), 800);
+    };
+})();
+
+document.addEventListener('DOMContentLoaded', () => {
+    Prism.highlightAll();
+    initOneko();
+});