Conversion from svelte params to pagination query to search params

src/lib/pagination/searchParams.ts

@@ -0,0 +1,46 @@
+import { splitEvery } from 'ramda'
+import type { PaginationQuery } from './pagination'
+
+export function getPaginationQueryFromSearchParams(
+  searchParams: URLSearchParams
+) {
+  return Array.from(searchParams).reduce<PaginationQuery>(
+    (acc, [key, value]) => {
+      const isDropTake = ['offset', 'limit'].includes(key)
+      if (isDropTake) {
+        return {
+          ...acc,
+          [key]: Number(value),
+        }
+      }
+      return {
+        ...acc,
+        filters: {
+          ...acc.filters,
+          [key]: value,
+        },
+      }
+    },
+    {}
+  )
+}
+
+export function parseParams(params: string) {
+  const splittedParams = params.split('/')
+  if (splittedParams.length % 2 !== 0) {
+    return []
+  }
+  const splits = splitEvery(2, splittedParams)
+  return Object.fromEntries(splits)
+}
+
+/**
+ * Convert svelte `load` params into a `URLSearchParams` so they can be used to fetch endpoints with pagination queries
+ */
+export function getPaginationSearchParams(pageSize: number, params: string) {
+  const { page = 1, ...filters } = parseParams(params)
+
+  const offset = pageSize * (page - 1)
+  const limit = pageSize
+  return new URLSearchParams({ limit, offset, ...filters })
+}