refactor: simplify daily fruit selection logic and update type definitions

src/lib/server/daily-fruit.ts

@@ -1,10 +1,7 @@
 import { db } from '$lib/server/db';
-import { character, devilFruit, devilFruitHistory, type DevilFruit, type Character } from '$lib/server/db/schema';
+import { character, devilFruit, devilFruitHistory, type DevilFruit, type Character, type DevilFruitType } from '$lib/server/db/schema';
 import { eq, and } from 'drizzle-orm';
 
-// Generate or get random seed for daily fruit selection
-const RANDOM_SEED = Math.random();
-
 const characterWithFruitSelect = {
 	id: character.id,
 	name: character.name,
@@ -15,9 +12,10 @@ const characterWithFruitSelect = {
 	url: devilFruit.url
 };
 
-export type CharacterWithFruit = Character & {
+export type CharacterWithFruit = Pick<Character, 'id' | 'name' | 'devilFruitId'> & {
 	devilFruitName: string | null;
-	devilFruitType: string | null;
+	devilFruitType: DevilFruitType | null;
+	url: string | null;
 };
 
 export function getDateKey(date: Date): number {
@@ -30,31 +28,29 @@ export function normalizeDay(date: Date = new Date()): Date {
 	return normalized;
 }
 
-function pickDailyFruit(fruits: DevilFruit[], date: Date): DevilFruit {
-	const timestamp = getDateKey(date);
-	const daysSinceEpoch = Math.floor(timestamp / 1000 / 60 / 60 / 24);
-	const combinedSeed = (daysSinceEpoch + Math.floor(RANDOM_SEED * 1000000)) % fruits.length;
-	return fruits[combinedSeed];
+function pickDailyFruit(fruits: DevilFruit[]): DevilFruit {
+	const randomIndex = Math.floor(Math.random() * fruits.length);
+	return fruits[randomIndex];
 }
 
 export async function getCharactersWithDevilFruit(): Promise<CharacterWithFruit[]> {
-	const rows = (await db
+	const rows = await db
 		.select(characterWithFruitSelect)
 		.from(character)
 		.leftJoin(devilFruit, eq(character.devilFruitId, devilFruit.id))
 		.where(eq(character.isInDailyMode, true))
-		.all()) as any[];
+		.all();
 
-	return rows.filter((r) => r.devilFruitId) as CharacterWithFruit[];
+	return rows.filter((r): r is CharacterWithFruit => Boolean(r.devilFruitId));
 }
 
 export async function getAllDevilFruitsFromCharacters(): Promise<DevilFruit[]> {
-	const characters = (await db
+	const characters = await db
 		.select(characterWithFruitSelect)
 		.from(character)
 		.leftJoin(devilFruit, eq(character.devilFruitId, devilFruit.id))
 		.where(eq(character.isInDailyMode, true))
-		.all()) as any[];
+		.all();
 
 	const map = new Map<string, DevilFruit>();
 	for (const row of characters) {
@@ -95,7 +91,7 @@ export async function getOrCreateTodayFruit(date: Date = new Date()): Promise<De
 	const allFruits = await getAllDevilFruitsFromCharacters();
 	if (allFruits.length === 0) return null;
 
-	const chosen = pickDailyFruit(allFruits, today);
+	const chosen = pickDailyFruit(allFruits);
 
 	try {
 		await db.insert(devilFruitHistory).values({