feat: seperate chat page

app/containers/Chat/PromptHint.tsx

@@ -0,0 +1,77 @@
+import { useEffect, useRef, useState } from "react";
+import { Prompt } from "@/app/store/prompt";
+
+import styles from "./index.module.scss";
+
+export type RenderPompt = Pick<Prompt, "title" | "content">;
+
+export default function PromptHints(props: {
+  prompts: RenderPompt[];
+  onPromptSelect: (prompt: RenderPompt) => void;
+}) {
+  const noPrompts = props.prompts.length === 0;
+  const [selectIndex, setSelectIndex] = useState(0);
+  const selectedRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    setSelectIndex(0);
+  }, [props.prompts.length]);
+
+  useEffect(() => {
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (noPrompts || e.metaKey || e.altKey || e.ctrlKey) {
+        return;
+      }
+      // arrow up / down to select prompt
+      const changeIndex = (delta: number) => {
+        e.stopPropagation();
+        e.preventDefault();
+        const nextIndex = Math.max(
+          0,
+          Math.min(props.prompts.length - 1, selectIndex + delta),
+        );
+        setSelectIndex(nextIndex);
+        selectedRef.current?.scrollIntoView({
+          block: "center",
+        });
+      };
+
+      if (e.key === "ArrowUp") {
+        changeIndex(1);
+      } else if (e.key === "ArrowDown") {
+        changeIndex(-1);
+      } else if (e.key === "Enter") {
+        const selectedPrompt = props.prompts.at(selectIndex);
+        if (selectedPrompt) {
+          props.onPromptSelect(selectedPrompt);
+        }
+      }
+    };
+
+    window.addEventListener("keydown", onKeyDown);
+
+    return () => window.removeEventListener("keydown", onKeyDown);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [props.prompts.length, selectIndex]);
+
+  if (noPrompts) return null;
+  return (
+    <div className={styles["prompt-hints"]}>
+      {props.prompts.map((prompt, i) => (
+        <div
+          ref={i === selectIndex ? selectedRef : null}
+          className={
+            styles["prompt-hint"] +
+            ` ${i === selectIndex ? styles["prompt-hint-selected"] : ""}`
+          }
+          key={prompt.title + i.toString()}
+          onClick={() => props.onPromptSelect(prompt)}
+          onMouseEnter={() => setSelectIndex(i)}
+        >
+          <div className={styles["hint-title"]}>{prompt.title}</div>
+          <div className={styles["hint-content"]}>{prompt.content}</div>
+        </div>
+      ))}
+    </div>
+  );
+}