1 files changed, 87 insertions, 0 deletions
diff --git a/packages/sortug/src/utils.ts b/packages/sortug/src/utils.ts
new file mode 100644
index 0000000..687b8db
--- /dev/null
+++ b/packages/sortug/src/utils.ts
@@ -0,0 +1,87 @@
+export function randomFromArray<T>(a: Array<T>): T {
+  const l = a.length;
+  const ind = Math.floor(Math.random() * l);
+  if (ind === l) return a[ind - 1];
+  else return a[ind];
+}
+export function randomFromArrayAcc<T>(a: Array<T>, s?: Set<T>): T {
+  const st = s ? s : new Set(a);
+  const l = a.length;
+  const ind = Math.floor(Math.random() * l);
+  const res = ind === l ? a[ind - 1] : a[ind];
+  if (st.has(res)) return randomFromArrayAcc(a, st);
+  else {
+    st.add(res);
+    // TODO have to return this too?
+    return res;
+  }
+}
+export function notRandomFromArray<T>(data: string, a: Array<T>): T {
+  const l = a.length;
+  const ind = hashTextToNumber(data, l - 1);
+  return a[ind];
+}
+
+function hashTextToNumber(text: string, max: number): number {
+  let hash = 0;
+  for (let i = 0; i < text.length; i++) {
+    const char = text.charCodeAt(i);
+    hash = (hash << 5) - hash + char;
+    hash = hash & hash; // Convert to 32-bit integer
+  }
+  // Make sure the hash is positive and within the given range
+  return Math.abs(hash) % max;
+}
+
+// Format time for display (HH:MM:SS)
+export const formatTime = (seconds: number): string => {
+  const hrs = Math.floor(seconds / 3600);
+  const mins = Math.floor((seconds % 3600) / 60);
+  const secs = Math.floor(seconds % 60);
+
+  return `${hrs.toString().padStart(2, "0")}:${mins
+    .toString()
+    .padStart(2, "0")}:${secs.toString().padStart(2, "0")}`;
+};
+
+export function date_diff(date: number, type: "short" | "long") {
+  const now = new Date().getTime();
+  const diff = now - new Date(date).getTime();
+  if (type == "short") {
+    return to_string(diff / 1000);
+  } else {
+    return to_string_long(diff / 1000);
+  }
+}
+
+function to_string(s: number) {
+  if (s < 60) {
+    return "now";
+  } else if (s < 3600) {
+    return `${Math.ceil(s / 60)}m`;
+  } else if (s < 86400) {
+    return `${Math.ceil(s / 60 / 60)}h`;
+  } else if (s < 2678400) {
+    return `${Math.ceil(s / 60 / 60 / 24)}d`;
+  } else if (s < 32140800) {
+    return `${Math.ceil(s / 60 / 60 / 24 / 30)}mo`;
+  } else {
+    return `${Math.ceil(s / 60 / 60 / 24 / 30 / 12)}y`;
+  }
+}
+
+function to_string_long(s: number) {
+  if (s < 60) {
+    return "right now";
+  } else if (s < 3600) {
+    return `${Math.ceil(s / 60)} minutes ago`;
+  } else if (s < 86400) {
+    return `${Math.ceil(s / 60 / 60)} hours ago`;
+  } else if (s < 2678400) {
+    return `${Math.ceil(s / 60 / 60 / 24)} days ago`;
+  } else if (s < 32140800) {
+    return `${Math.ceil(s / 60 / 60 / 24 / 30)} months ago`;
+  } else {
+    return `${Math.ceil(s / 60 / 60 / 24 / 30 / 12)} years ago`;
+  }
+}