From c9585b9242616b63ef2bad356152c1cf1e1b0f19 Mon Sep 17 00:00:00 2001
From: haninekkoub <haninekkoub@gmail.com>
Date: Tue, 22 Oct 2024 17:41:15 +0100
Subject: [PATCH] Filter dropdown mobile/ desktop

---
 .../product-refinement/filters/drop-down.tsx  |   5 +-
 .../filters/filter-select.tsx                 | 117 +++++++++++++-----
 .../filters/mobile/index.tsx                  |  71 ++++++++++-
 3 files changed, 156 insertions(+), 37 deletions(-)

diff --git a/storefront/components/products/product-refinement/filters/drop-down.tsx b/storefront/components/products/product-refinement/filters/drop-down.tsx
index 34eb8b4..b7ce916 100644
--- a/storefront/components/products/product-refinement/filters/drop-down.tsx
+++ b/storefront/components/products/product-refinement/filters/drop-down.tsx
@@ -59,14 +59,11 @@ export default function DropDown({
         </button>
         <div
           className={cx(
-            "border-border-grey absolute left-0 z-50 my-1 origin-top cursor-pointer overflow-y-scroll rounded-lg rounded-b-lg border-[1.5px] border-accent bg-background transition-[max-height]",
+            "absolute left-0 z-50 my-1 origin-top cursor-pointer overflow-y-scroll rounded-lg rounded-b-lg border-[1.5px] border-accent bg-background",
             {
               hidden: !isOpen,
             },
           )}
-          style={{
-            maxHeight: isOpen ? 300 : 0,
-          }}
         >
           {children}
         </div>
diff --git a/storefront/components/products/product-refinement/filters/filter-select.tsx b/storefront/components/products/product-refinement/filters/filter-select.tsx
index 6dd3ec6..7a42a79 100644
--- a/storefront/components/products/product-refinement/filters/filter-select.tsx
+++ b/storefront/components/products/product-refinement/filters/filter-select.tsx
@@ -5,7 +5,7 @@ import Icon from "@/components/shared/icon";
 import Body from "@/components/shared/typography/body";
 import {cx} from "cva";
 import {parseAsArrayOf, parseAsString, useQueryState} from "nuqs";
-import {type ComponentProps, useState} from "react";
+import {type ComponentProps, useEffect, useRef, useState} from "react";
 
 import DropDown from "./drop-down";
 
@@ -37,39 +37,96 @@ export default function FilterSelect(
   const {filter, setFilter} = useMultiFilter(props.name);
 
   const [isOpen, setOpen] = useState(false);
+  const [showTopArrow, setShowTopArrow] = useState(false);
+  const [showBottomArrow, setShowBottomArrow] = useState(false);
+  const scrollContainerRef = useRef<HTMLDivElement>(null);
+
+  const handleScroll = () => {
+    const container = scrollContainerRef.current;
+    if (container) {
+      setShowTopArrow(container.scrollTop > 0);
+      setShowBottomArrow(
+        container.scrollHeight - container.clientHeight >
+          container.scrollTop + 1,
+      );
+    }
+  };
+
+  useEffect(() => {
+    handleScroll();
+  }, [isOpen]);
+
+  const scrollBy = (amount: number) => {
+    const container = scrollContainerRef.current;
+    if (container) {
+      container.scrollBy({behavior: "smooth", top: amount});
+    }
+  };
 
   return (
     <DropDown isOpen={isOpen} placeholder={props.placeholder} setOpen={setOpen}>
-      <div className="group flex w-full flex-col gap-2 rounded p-xs py-2">
-        {props.options.map((option) => {
-          const selected = filter?.includes(option.value);
-          return (
-            <button
-              className="flex cursor-pointer items-center gap-2 rounded-lg px-s py-xs hover:bg-secondary disabled:pointer-events-none"
-              key={option.value}
-              onClick={() => setFilter(option.value)}
-            >
-              <div className="flex !size-4 items-center justify-center rounded-[4px] border border-accent">
-                <Icon
-                  className={cx(
-                    "!size-3 shrink-0 transform opacity-0 transition-transform duration-300",
-                    {"opacity-100": selected},
-                  )}
-                  height={24}
-                  name="Check"
-                  width={24}
-                />
-              </div>
-              <Body
-                className="truncate text-nowrap text-left"
-                font="sans"
-                mobileSize="base"
+      <div
+        className="relative max-h-[320px] w-full overflow-y-auto rounded"
+        onScroll={handleScroll}
+        ref={scrollContainerRef}
+      >
+        <div className="sticky top-0">
+          <div
+            className={cx(
+              "absolute left-0 top-0 flex w-full cursor-pointer items-center justify-center border-b-[1.5px] border-accent bg-background transition-all duration-300",
+              {
+                "translate-y-[-100%]": !showTopArrow,
+              },
+            )}
+            onClick={() => scrollBy(-250)}
+          >
+            <Icon className="size-6" name="AccordionBottom" />
+          </div>
+        </div>
+        <div className="group flex w-full flex-col gap-2 p-xs">
+          {props.options.map((option) => {
+            const selected = filter?.includes(option.value);
+            return (
+              <button
+                className="flex cursor-pointer items-center gap-2 rounded-lg px-s py-xs hover:bg-secondary disabled:pointer-events-none"
+                key={option.value}
+                onClick={() => setFilter(option.value)}
               >
-                {option.label}
-              </Body>
-            </button>
-          );
-        })}
+                <div className="flex !size-4 items-center justify-center rounded-[4px] border border-accent">
+                  <Icon
+                    className={cx(
+                      "!size-3 shrink-0 transform opacity-0 transition-transform duration-300",
+                      {"opacity-100": selected},
+                    )}
+                    height={24}
+                    name="Check"
+                    width={24}
+                  />
+                </div>
+                <Body
+                  className="truncate text-nowrap text-left"
+                  font="sans"
+                  mobileSize="base"
+                >
+                  {option.label}
+                </Body>
+              </button>
+            );
+          })}
+        </div>
+        <div className="sticky bottom-0 -mt-[25.5px] h-[25.5px] overflow-hidden">
+          <div
+            className={cx(
+              "sticky bottom-0 left-0 flex w-full cursor-pointer items-center justify-center border-t-[1.5px] border-accent bg-background transition-all duration-300",
+              {
+                "translate-y-[100%]": !showBottomArrow,
+              },
+            )}
+            onClick={() => scrollBy(250)}
+          >
+            <Icon className="size-6" name="AccordionTop" />
+          </div>
+        </div>
       </div>
     </DropDown>
   );
diff --git a/storefront/components/products/product-refinement/filters/mobile/index.tsx b/storefront/components/products/product-refinement/filters/mobile/index.tsx
index f5f5851..1ced8de 100644
--- a/storefront/components/products/product-refinement/filters/mobile/index.tsx
+++ b/storefront/components/products/product-refinement/filters/mobile/index.tsx
@@ -1,8 +1,16 @@
 "use client";
 import {Cta} from "@/components/shared/button";
+import Icon from "@/components/shared/icon";
 import Body from "@/components/shared/typography/body";
+import {cx} from "cva";
 import {usePathname, useRouter} from "next/navigation";
-import {type PropsWithChildren, useCallback, useState} from "react";
+import {
+  type PropsWithChildren,
+  useCallback,
+  useEffect,
+  useRef,
+  useState,
+} from "react";
 
 import DropDown from "../drop-down";
 
@@ -17,11 +25,68 @@ export default function MobileFilterDropdown({children}: Props) {
     router.push(pathname);
     setOpen(false);
   }, [router, pathname]);
+  const [showTopArrow, setShowTopArrow] = useState(false);
+  const [showBottomArrow, setShowBottomArrow] = useState(false);
+  const scrollContainerRef = useRef<HTMLDivElement>(null);
 
+  const handleScroll = () => {
+    const container = scrollContainerRef.current;
+    if (container) {
+      setShowTopArrow(container.scrollTop > 0);
+      setShowBottomArrow(
+        container.scrollHeight - container.clientHeight >
+          container.scrollTop + 1,
+      );
+    }
+  };
+
+  useEffect(() => {
+    handleScroll();
+  }, [isOpen]);
+
+  const scrollBy = (amount: number) => {
+    const container = scrollContainerRef.current;
+    if (container) {
+      container.scrollBy({behavior: "smooth", top: amount});
+    }
+  };
   return (
     <DropDown isOpen={isOpen} placeholder="Filter" setOpen={setOpen}>
-      {children}
-      <div className="my-2 flex w-[calc(100vw-40px)] flex-col justify-center gap-s px-xs">
+      <div
+        className="relative max-h-[360px] w-full overflow-y-auto rounded"
+        onScroll={handleScroll}
+        ref={scrollContainerRef}
+      >
+        <div className="sticky top-0">
+          <div
+            className={cx(
+              "absolute left-0 top-0 flex w-full cursor-pointer items-center justify-center border-b-[1.5px] border-accent bg-background transition-all duration-300",
+              {
+                "translate-y-[-100%]": !showTopArrow,
+              },
+            )}
+            onClick={() => scrollBy(-250)}
+          >
+            <Icon className="my-1 size-6" name="AccordionBottom" />
+          </div>
+        </div>
+        {children}
+        <div className="sticky bottom-0 h-[25.5px] overflow-hidden">
+          <div
+            className={cx(
+              "sticky bottom-0 left-0 flex w-full cursor-pointer items-center justify-center border-t-[1.5px] border-accent bg-background transition-all duration-300",
+              {
+                "translate-y-[100%]": !showBottomArrow,
+              },
+            )}
+            onClick={() => scrollBy(250)}
+          >
+            <Icon className="my-1 size-6" name="AccordionTop" />
+          </div>
+        </div>
+      </div>
+
+      <div className="sticky bottom-0 my-2 flex w-[calc(100vw-40px)] flex-col justify-center gap-s px-xs">
         <Cta className="w-full" onClick={() => setOpen(false)} size="md">
           Show Results
         </Cta>