Use unix days instead of time hashes

src/lib/util.ts

@@ -1,6 +1,6 @@
 import {hexToBytes, bytesToHex} from "@noble/hashes/utils"
 import * as nip19 from "nostr-tools/nip19"
-import {HOUR, MONTH, DAY} from "@welshman/lib"
+import {range, DAY} from "@welshman/lib"
 
 export const displayList = <T>(xs: T[], conj = "and", n = 6, locale = "en-US") => {
   const stringItems = xs.map(String)
@@ -26,41 +26,6 @@ export const nsecDecode = (nsec: string) => {
   return bytesToHex(data)
 }
 
-export const timeHash = (seconds: number, precision = 32) => {
-  const alphabet = "0123456789bcdefghjkmnpqrstuvwxyz"
-  const uint32 = Math.min(seconds >>> 0, 0xffffffff)
-  const binary = uint32.toString(2).padStart(32, "0")
-  const chunks = Math.min(Math.floor(precision / 5), 6)
+export const day = (seconds: number) => Math.floor(seconds / DAY).toString()
 
-  let hash = ""
-
-  for (let i = 0; i < chunks * 5; i += 5) {
-    const chunk = binary.slice(i, i + 5)
-    const index = parseInt(chunk, 2)
-
-    hash += alphabet[index]
-  }
-
-  return hash
-}
-
-export const timeHashesBetween = (start: number, end: number, precisions = [10, 15, 20]) => {
-  const hashes = new Set<string>()
-
-  for (let seconds = start; seconds <= end; seconds += HOUR) {
-    for (const precision of precisions) {
-      hashes.add(timeHash(seconds, precision))
-    }
-  }
-
-  return Array.from(hashes).sort()
-}
-
-export const timeHashesForFilter = (start: number, end: number) => {
-  const diff = end - start
-
-  if (diff < 3 * DAY) return timeHashesBetween(start, end, [20])
-  if (diff < 3 * MONTH) return timeHashesBetween(start, end, [15])
-
-  return timeHashesBetween(start, end, [10])
-}
+export const daysBetween = (start: number, end: number) => [...range(start, end, DAY)].map(day)