Filter groups/admins via query params (#29)

* feat(explorer): filter content using query params

Content can now be filtered using either the params groupid or admin

re #25

* feat(explorer): filters groups using query parameters

Groups and groups belonging to a specified admin can now be filtered via query parameters.
Additionally, the query parameters are reflected within the input element.

re #25

apps/explorer/src/app/[network]/page.tsx

@@ -2,8 +2,8 @@
 
 import { GroupResponse, SemaphoreSubgraph } from "@semaphore-protocol/data"
 import { SupportedNetwork } from "@semaphore-protocol/utils"
-import { usePathname } from "next/navigation"
-import { useCallback, useEffect, useState } from "react"
+import { usePathname, useSearchParams } from "next/navigation"
+import { useCallback, useEffect, useState, useMemo } from "react"
 import SearchBar from "@/components/SearchBar"
 
 export default function Network() {
@@ -12,9 +12,13 @@ export default function Network() {
 
     const [allGroups, setAllGroups] = useState<GroupResponse[]>([])
     const [filteredGroups, setFilteredGroups] = useState<GroupResponse[]>([])
-
     const [loading, setLoading] = useState(false)
 
+    const searchParams = useSearchParams()
+    const adminParam = useMemo(() => new URLSearchParams(searchParams).get("admin"), [searchParams.toString()])
+    const groupIdParam = useMemo(() => new URLSearchParams(searchParams).get("groupid"), [searchParams.toString()])
+    const queryParam = adminParam || groupIdParam
+
     useEffect(() => {
         const fetchData = async () => {
             setLoading(true)
@@ -40,24 +44,34 @@ export default function Network() {
             let groups: GroupResponse[]
             if (groupIdOrAdmin.startsWith("0x")) {
                 groupIdOrAdmin = groupIdOrAdmin.toLowerCase()
-                groups = allGroups.filter((group) => (!groupIdOrAdmin ? true : group.admin?.includes(groupIdOrAdmin)))
+                groups = allGroups.filter((group) => group.admin?.includes(groupIdOrAdmin))
             } else {
-                groups = allGroups.filter((group) => (!groupIdOrAdmin ? true : group.id.includes(groupIdOrAdmin)))
+                groups = allGroups.filter(
+                    (group) => group.id.includes(groupIdOrAdmin) || group.admin === groupIdOrAdmin
+                )
             }
-
             setFilteredGroups(groups)
         },
         [allGroups]
     )
 
+    useEffect(() => {
+        filterGroups(adminParam || groupIdParam || "")
+    }, [adminParam, groupIdParam, filterGroups])
+
     return loading ? (
         <div className="flex justify-center items-center h-screen">
             <div className="loader" />
         </div>
     ) : (
         allGroups && (
             <div className="mx-auto max-w-7xl px-4 lg:px-8 pt-20">
-                <SearchBar className="mb-6" placeholder="Group ID, Admin" onChange={filterGroups} />
+                <SearchBar
+                    className="mb-6"
+                    placeholder="Group ID, Admin"
+                    onChange={filterGroups}
+                    queryParam={queryParam}
+                />
 
                 <div className="flex justify-center flex-col pb-10 font-[family-name:var(--font-geist-sans)]">
                     <ul className="divide-y divide-gray-300 min-w-xl">

apps/explorer/src/components/SearchBar.tsx

@@ -1,19 +1,34 @@
 "use client"
 
 import { FaSearch } from "react-icons/fa"
+import { useState, useEffect, ChangeEvent } from "react"
+
+export default function SearchBar({ placeholder, onChange, className, queryParam }: any) {
+    const [searchQuery, setSearchQuery] = useState("")
+    useEffect(() => {
+        if (queryParam) {
+            setSearchQuery(queryParam)
+        }
+    }, [queryParam])
+
+    const handleInputChange = (event: ChangeEvent<HTMLInputElement>) => {
+        const { value } = event.target
+        setSearchQuery(value)
+        onChange(value)
+    }
 
-export default function SearchBar({ placeholder, onChange, className }: any) {
     return (
         <div className={`relative mt-2 rounded-md shadow-sm ${className}`}>
             <div className="pointer-events-none absolute inset-y-0 left-0 flex items-center pl-3">
                 <FaSearch className="text-gray-600" />
             </div>
             <input
-                onChange={(event) => onChange(event.target.value)}
+                onChange={handleInputChange}
                 name="search-bar"
                 type="text"
                 placeholder={placeholder}
                 className="block w-full rounded-md border-0 py-1.5 pl-9 pr-20 text-gray-900 ring-1 ring-inset ring-gray-300 placeholder:text-gray-400 focus:outline-none text-sm sm:leading-6"
+                value={searchQuery}
             />
         </div>
     )