refactor: make frontend a pure presentation layer fetching from backend API

Server components now fetch composed data from the backend instead of
directly querying SQLite and external APIs. Removes better-sqlite3
dependency from the frontend entirely.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/api/parks/route.ts

@@ -1,59 +0,0 @@
-import { NextRequest, NextResponse } from "next/server";
-import { PARKS } from "@/lib/parks";
-import { openDb, getMonthCalendar } from "@/lib/db";
-import type { Park } from "@/lib/scrapers/types";
-
-export interface ParksApiResponse {
-  parks: Park[];
-  calendar: Record<string, boolean[]>;
-  month: string;
-  daysInMonth: number;
-}
-
-function getDaysInMonth(year: number, month: number): number {
-  return new Date(year, month, 0).getDate();
-}
-
-function parseMonthParam(
-  monthParam: string | null
-): { year: number; month: number } | null {
-  if (!monthParam) return null;
-  const match = monthParam.match(/^(\d{4})-(\d{2})$/);
-  if (!match) return null;
-  const year = parseInt(match[1], 10);
-  const month = parseInt(match[2], 10);
-  if (month < 1 || month > 12) return null;
-  return { year, month };
-}
-
-export async function GET(request: NextRequest): Promise<NextResponse> {
-  const monthParam = request.nextUrl.searchParams.get("month");
-  const parsed = parseMonthParam(monthParam);
-
-  if (!parsed) {
-    return NextResponse.json(
-      { error: "Invalid or missing ?month=YYYY-MM parameter" },
-      { status: 400 }
-    );
-  }
-
-  const { year, month } = parsed;
-  const daysInMonth = getDaysInMonth(year, month);
-
-  const db = openDb();
-  const calendar = getMonthCalendar(db, year, month);
-  db.close();
-
-  const response: ParksApiResponse = {
-    parks: PARKS,
-    calendar,
-    month: `${year}-${String(month).padStart(2, "0")}`,
-    daysInMonth,
-  };
-
-  return NextResponse.json(response, {
-    headers: {
-      "Cache-Control": "public, s-maxage=3600, stale-while-revalidate=86400",
-    },
-  });
-}

app/page.tsx

@@ -1,12 +1,7 @@
 import { HomePageClient } from "@/components/HomePageClient";
-import { PARKS } from "@/lib/parks";
-import { openDb, getDateRange } from "@/lib/db";
-import { getTodayLocal, isWithinOperatingWindow, getOperatingStatus } from "@/lib/env";
-import { fetchLiveRides } from "@/lib/scrapers/queuetimes";
-import { fetchToday } from "@/lib/scrapers/sixflags";
-import { QUEUE_TIMES_IDS } from "@/lib/queue-times-map";
-import { getCoasterSet, hasCoasterData } from "@/lib/coaster-data";
-import type { DayData } from "@/lib/db";
+import { getTodayLocal } from "@/lib/env";
+
+const BACKEND_URL = process.env.BACKEND_URL ?? "http://localhost:3001";
 
 interface PageProps {
   searchParams: Promise<{ week?: string }>;
@@ -26,121 +21,14 @@ function getWeekStart(param: string | undefined): string {
   return d.toISOString().slice(0, 10);
 }
 
-function getWeekDates(sundayIso: string): string[] {
-  return Array.from({ length: 7 }, (_, i) => {
-    const d = new Date(sundayIso + "T00:00:00");
-    d.setDate(d.getDate() + i);
-    return d.toISOString().slice(0, 10);
-  });
-}
-
-function getCurrentWeekStart(): string {
-  const todayIso = getTodayLocal();
-  const d = new Date(todayIso + "T00:00:00");
-  d.setDate(d.getDate() - d.getDay());
-  return d.toISOString().slice(0, 10);
-}
-
 export default async function HomePage({ searchParams }: PageProps) {
   const params = await searchParams;
   const weekStart = getWeekStart(params.week);
-  const weekDates = getWeekDates(weekStart);
-  const endDate = weekDates[6];
-  const today = getTodayLocal();
-  const isCurrentWeek = weekStart === getCurrentWeekStart();
 
-  const db = openDb();
-  const data = getDateRange(db, weekStart, endDate);
+  const data = await fetch(
+    `${BACKEND_URL}/api/calendar/week?start=${weekStart}`,
+    { next: { revalidate: 120 } },
+  ).then((r) => r.json());
 
-  // Merge live today data from the Six Flags API (dateless endpoint, 5-min ISR cache).
-  // This ensures weather delays, early closures, and hour changes surface within 5 minutes
-  // without waiting for the next scheduled scrape. Only fetched when viewing the current week.
-  if (weekDates.includes(today)) {
-    const todayResults = await Promise.all(
-      PARKS.map(async (p) => {
-        const live = await fetchToday(p.apiId, 300); // 5-min ISR cache
-        return live ? { parkId: p.id, live } : null;
-      })
-    );
-    for (const result of todayResults) {
-      if (!result) continue;
-      const { parkId, live } = result;
-      if (!data[parkId]) data[parkId] = {};
-      data[parkId][today] = {
-        isOpen: live.isOpen,
-        hoursLabel: live.hoursLabel ?? null,
-        specialType: live.specialType ?? null,
-      } satisfies DayData;
-    }
-  }
-
-  db.close();
-
-  const scrapedCount = Object.values(data).reduce(
-    (sum, parkData) => sum + Object.keys(parkData).length,
-    0
-  );
-
-  const coasterDataAvailable = hasCoasterData();
-
-  let rideCounts: Record<string, number> = {};
-  let coasterCounts: Record<string, number> = {};
-  let closingParkIds: string[] = [];
-  let openParkIds: string[] = [];
-  let weatherDelayParkIds: string[] = [];
-  if (weekDates.includes(today)) {
-    // Parks within operating hours right now (for open dot — independent of ride counts)
-    const openTodayParks = PARKS.filter((p) => {
-      const dayData = data[p.id]?.[today];
-      if (!dayData?.isOpen || !dayData.hoursLabel) return false;
-      return isWithinOperatingWindow(dayData.hoursLabel, p.timezone);
-    });
-    openParkIds = openTodayParks.map((p) => p.id);
-    closingParkIds = openTodayParks
-      .filter((p) => {
-        const dayData = data[p.id]?.[today];
-        return dayData?.hoursLabel
-          ? getOperatingStatus(dayData.hoursLabel, p.timezone) === "closing"
-          : false;
-      })
-      .map((p) => p.id);
-    // Only fetch ride counts for parks that have queue-times coverage
-    const trackedParks = openTodayParks.filter((p) => QUEUE_TIMES_IDS[p.id]);
-    const results = await Promise.all(
-      trackedParks.map(async (p) => {
-        const coasterSet = getCoasterSet(p.id);
-        const result = await fetchLiveRides(QUEUE_TIMES_IDS[p.id], coasterSet, 300);
-        const rideCount = result ? result.rides.filter((r) => r.isOpen).length : null;
-        const coasterCount = result ? result.rides.filter((r) => r.isOpen && r.isCoaster).length : 0;
-        return { id: p.id, rideCount, coasterCount };
-      })
-    );
-    // Parks with queue-times coverage but 0 open rides = likely weather delay
-    weatherDelayParkIds = results
-      .filter(({ rideCount }) => rideCount === 0)
-      .map(({ id }) => id);
-    rideCounts = Object.fromEntries(
-      results.filter(({ rideCount }) => rideCount != null && rideCount > 0).map(({ id, rideCount }) => [id, rideCount!])
-    );
-    coasterCounts = Object.fromEntries(
-      results.filter(({ coasterCount }) => coasterCount > 0).map(({ id, coasterCount }) => [id, coasterCount])
-    );
-  }
-
-  return (
-    <HomePageClient
-      weekStart={weekStart}
-      weekDates={weekDates}
-      today={today}
-      isCurrentWeek={isCurrentWeek}
-      data={data}
-      rideCounts={rideCounts}
-      coasterCounts={coasterCounts}
-      openParkIds={openParkIds}
-      closingParkIds={closingParkIds}
-      weatherDelayParkIds={weatherDelayParkIds}
-      hasCoasterData={coasterDataAvailable}
-      scrapedCount={scrapedCount}
-    />
-  );
+  return <HomePageClient {...data} />;
 }

app/park/[id]/page.tsx

@@ -1,33 +1,27 @@
-import Link from "next/link";
 import { BackToCalendarLink } from "@/components/BackToCalendarLink";
 import { notFound } from "next/navigation";
 import { PARK_MAP } from "@/lib/parks";
-import { openDb, getParkMonthData } from "@/lib/db";
-import { scrapeRidesForDay } from "@/lib/scrapers/sixflags";
-import { fetchLiveRides } from "@/lib/scrapers/queuetimes";
-import { fetchToday } from "@/lib/scrapers/sixflags";
-import { QUEUE_TIMES_IDS } from "@/lib/queue-times-map";
-import { getCoasterSet } from "@/lib/coaster-data";
 import { ParkMonthCalendar } from "@/components/ParkMonthCalendar";
 import { LiveRidePanel } from "@/components/LiveRidePanel";
 import type { RideStatus, RidesFetchResult } from "@/lib/scrapers/sixflags";
-import type { LiveRidesResult } from "@/lib/scrapers/queuetimes"; // used as prop type below
-import { getTodayLocal, isWithinOperatingWindow } from "@/lib/env";
+import type { LiveRidesResult } from "@/lib/scrapers/queuetimes";
+import { getTodayLocal } from "@/lib/env";
+
+const BACKEND_URL = process.env.BACKEND_URL ?? "http://localhost:3001";
 
 interface PageProps {
   params: Promise<{ id: string }>;
   searchParams: Promise<{ month?: string }>;
 }
 
-function parseMonthParam(param: string | undefined): { year: number; month: number } {
+function parseMonthParam(param: string | undefined): string {
   if (param && /^\d{4}-\d{2}$/.test(param)) {
     const [y, m] = param.split("-").map(Number);
     if (y >= 2020 && y <= 2030 && m >= 1 && m <= 12) {
-      return { year: y, month: m };
+      return param;
     }
   }
-  const [y, m] = getTodayLocal().split("-").map(Number);
-  return { year: y, month: m };
+  return getTodayLocal().slice(0, 7);
 }
 
 export default async function ParkPage({ params, searchParams }: PageProps) {
@@ -37,54 +31,30 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
   const park = PARK_MAP.get(id);
   if (!park) notFound();
 
-  const today = getTodayLocal();
-  const { year, month } = parseMonthParam(monthParam);
+  const monthStr = parseMonthParam(monthParam);
+  const [year, month] = monthStr.split("-").map(Number);
 
-  const db = openDb();
-  const monthData = getParkMonthData(db, id, year, month);
-  db.close();
+  const [calendarData, ridesData] = await Promise.all([
+    fetch(`${BACKEND_URL}/api/calendar/${id}/month?month=${monthStr}`, {
+      next: { revalidate: 300 },
+    }).then((r) => r.json()),
+    fetch(`${BACKEND_URL}/api/parks/${id}/rides`, {
+      next: { revalidate: 60 },
+    }).then((r) => r.json()),
+  ]);
 
-  const liveToday = await fetchToday(park.apiId, 300).catch(() => null);
-  const todayData = liveToday
-    ? { isOpen: liveToday.isOpen, hoursLabel: liveToday.hoursLabel ?? null, specialType: liveToday.specialType ?? null }
-    : monthData[today];
-  const parkOpenToday = todayData?.isOpen && todayData?.hoursLabel;
-
-  // ── Ride data: try live Queue-Times first, fall back to schedule ──────────
-  const queueTimesId = QUEUE_TIMES_IDS[id];
-  const coasterSet = getCoasterSet(id);
-
-  let liveRides: LiveRidesResult | null = null;
-  let ridesResult: RidesFetchResult | null = null;
-
-  // Determine if we're within the 1h-before-open to 1h-after-close window.
-  const withinWindow = todayData?.hoursLabel
-    ? isWithinOperatingWindow(todayData.hoursLabel, park.timezone)
-    : false;
-
-  if (queueTimesId) {
-    const raw = await fetchLiveRides(queueTimesId, coasterSet);
-    if (raw) {
-      // Outside the window: show the ride list but force all rides closed
-      liveRides = withinWindow
-        ? raw
-        : {
-            ...raw,
-            rides: raw.rides.map((r) => ({ ...r, isOpen: false, waitMinutes: 0 })),
-          };
-    }
-  }
-
-  // Weather delay: park is within operating hours but queue-times shows 0 open rides
-  const isWeatherDelay =
-    withinWindow &&
-    liveRides !== null &&
-    liveRides.rides.length > 0 &&
-    liveRides.rides.every((r) => !r.isOpen);
-
-  if (!liveRides) {
-    ridesResult = await scrapeRidesForDay(park.apiId, today);
-  }
+  const { monthData, today } = calendarData;
+  const {
+    parkOpenToday,
+    isWeatherDelay,
+    liveRides,
+    scheduleFallback: ridesResult,
+  }: {
+    parkOpenToday: boolean;
+    isWeatherDelay: boolean;
+    liveRides: LiveRidesResult | null;
+    scheduleFallback: RidesFetchResult | null;
+  } = ridesData;
 
   return (
     <div style={{ minHeight: "100vh", background: "var(--color-bg)" }}>
@@ -162,13 +132,13 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
           {liveRides ? (
             <LiveRidePanel
               liveRides={liveRides}
-              parkOpenToday={!!parkOpenToday}
+              parkOpenToday={parkOpenToday}
               isWeatherDelay={isWeatherDelay}
             />
           ) : (
             <RideList
               ridesResult={ridesResult}
-              parkOpenToday={!!parkOpenToday}
+              parkOpenToday={parkOpenToday}
             />
           )}
         </section>

backend/src/db/queries.ts

@@ -1,11 +1,8 @@
 import type Database from "better-sqlite3";
 import { getDb } from "./index";
 
-export interface DayData {
-  isOpen: boolean;
-  hoursLabel: string | null;
-  specialType: string | null;
-}
+import type { DayData } from "../../../lib/types";
+export type { DayData };
 
 interface DayRow {
   park_id: string;

components/HomePageClient.tsx

@@ -8,7 +8,7 @@ import { WeekNav } from "./WeekNav";
 import { Legend } from "./Legend";
 import { EmptyState } from "./EmptyState";
 import { PARKS, groupByRegion } from "@/lib/parks";
-import type { DayData } from "@/lib/db";
+import type { DayData } from "@/lib/types";
 
 const REFRESH_INTERVAL_MS = 2 * 60 * 1000; // 2 minutes
 const OPEN_REFRESH_BUFFER_MS = 30_000;      // 30s after opening time before hitting the API

components/MobileCardList.tsx

@@ -1,5 +1,5 @@
 import type { Park } from "@/lib/scrapers/types";
-import type { DayData } from "@/lib/db";
+import type { DayData } from "@/lib/types";
 import type { Region } from "@/lib/parks";
 import { ParkCard } from "./ParkCard";
 

components/ParkCard.tsx

@@ -1,6 +1,6 @@
 import Link from "next/link";
 import type { Park } from "@/lib/scrapers/types";
-import type { DayData } from "@/lib/db";
+import type { DayData } from "@/lib/types";
 import { getTimezoneAbbr } from "@/lib/env";
 
 interface ParkCardProps {

components/ParkMonthCalendar.tsx

@@ -1,5 +1,5 @@
 import Link from "next/link";
-import type { DayData } from "@/lib/db";
+import type { DayData } from "@/lib/types";
 import { getTimezoneAbbr } from "@/lib/env";
 
 interface ParkMonthCalendarProps {

components/WeekCalendar.tsx

@@ -1,7 +1,7 @@
 import { Fragment } from "react";
 import Link from "next/link";
 import type { Park } from "@/lib/scrapers/types";
-import type { DayData } from "@/lib/db";
+import type { DayData } from "@/lib/types";
 import type { Region } from "@/lib/parks";
 import { getTodayLocal, getTimezoneAbbr } from "@/lib/env";
 

lib/db.ts

@@ -1,288 +0,0 @@
-import Database from "better-sqlite3";
-import path from "path";
-import fs from "fs";
-
-const DATA_DIR = path.join(process.cwd(), "data");
-const DB_PATH = path.join(DATA_DIR, "parks.db");
-
-export type DbInstance = Database.Database;
-
-export function openDb(): Database.Database {
-  fs.mkdirSync(DATA_DIR, { recursive: true });
-  const db = new Database(DB_PATH);
-  db.pragma("journal_mode = WAL");
-  db.exec(`
-    CREATE TABLE IF NOT EXISTS park_days (
-      park_id      TEXT    NOT NULL,
-      date         TEXT    NOT NULL,  -- YYYY-MM-DD
-      is_open      INTEGER NOT NULL DEFAULT 0,
-      hours_label  TEXT,
-      special_type TEXT,              -- 'passholder_preview' | null
-      scraped_at   TEXT    NOT NULL,
-      PRIMARY KEY (park_id, date)
-    );
-    CREATE TABLE IF NOT EXISTS park_api_ids (
-      park_id          TEXT PRIMARY KEY,
-      api_id           INTEGER NOT NULL,
-      api_abbreviation TEXT,
-      api_name         TEXT,
-      discovered_at    TEXT NOT NULL
-    )
-  `);
-  // Migrate existing databases that predate the special_type column
-  try {
-    db.exec(`ALTER TABLE park_days ADD COLUMN special_type TEXT`);
-  } catch {
-    // Column already exists — safe to ignore
-  }
-  return db;
-}
-
-export function upsertDay(
-  db: Database.Database,
-  parkId: string,
-  date: string,
-  isOpen: boolean,
-  hoursLabel?: string,
-  specialType?: string
-) {
-  // Today and future dates: full upsert — hours can change (e.g. weather delays,
-  // early closures) and the dateless API endpoint now returns today's live data.
-  //
-  // Past dates: INSERT-only — never overwrite once the day has passed.
-  db.prepare(`
-    INSERT INTO park_days (park_id, date, is_open, hours_label, special_type, scraped_at)
-    VALUES (?, ?, ?, ?, ?, ?)
-    ON CONFLICT (park_id, date) DO UPDATE SET
-      is_open      = excluded.is_open,
-      hours_label  = excluded.hours_label,
-      special_type = excluded.special_type,
-      scraped_at   = excluded.scraped_at
-    WHERE park_days.date >= date('now')
-  `).run(parkId, date, isOpen ? 1 : 0, hoursLabel ?? null, specialType ?? null, new Date().toISOString());
-}
-
-export interface DayData {
-  isOpen: boolean;
-  hoursLabel: string | null;
-  specialType: string | null;
-}
-
-/**
- * Returns scraped data for all parks across a date range.
- * Shape: { parkId: { 'YYYY-MM-DD': DayData } }
- * Missing dates mean that date hasn't been scraped yet (not necessarily closed).
- */
-export function getDateRange(
-  db: Database.Database,
-  startDate: string,
-  endDate: string
-): Record<string, Record<string, DayData>> {
-  const rows = db
-    .prepare(
-      `SELECT park_id, date, is_open, hours_label, special_type
-       FROM park_days
-       WHERE date >= ? AND date <= ?`
-    )
-    .all(startDate, endDate) as {
-    park_id: string;
-    date: string;
-    is_open: number;
-    hours_label: string | null;
-    special_type: string | null;
-  }[];
-
-  const result: Record<string, Record<string, DayData>> = {};
-  for (const row of rows) {
-    if (!result[row.park_id]) result[row.park_id] = {};
-    result[row.park_id][row.date] = {
-      isOpen: row.is_open === 1,
-      hoursLabel: row.hours_label,
-      specialType: row.special_type,
-    };
-  }
-  return result;
-}
-
-/**
- * Returns scraped DayData for a single park for an entire month.
- * Shape: { 'YYYY-MM-DD': DayData }
- */
-export function getParkMonthData(
-  db: Database.Database,
-  parkId: string,
-  year: number,
-  month: number,
-): Record<string, DayData> {
-  const prefix = `${year}-${String(month).padStart(2, "0")}`;
-  const rows = db
-    .prepare(
-      `SELECT date, is_open, hours_label, special_type
-       FROM park_days
-       WHERE park_id = ? AND date LIKE ? || '-%'
-       ORDER BY date`
-    )
-    .all(parkId, prefix) as {
-    date: string;
-    is_open: number;
-    hours_label: string | null;
-    special_type: string | null;
-  }[];
-
-  const result: Record<string, DayData> = {};
-  for (const row of rows) {
-    result[row.date] = {
-      isOpen: row.is_open === 1,
-      hoursLabel: row.hours_label,
-      specialType: row.special_type,
-    };
-  }
-  return result;
-}
-
-/** Returns a map of parkId → boolean[] (index 0 = day 1) for a given month. */
-export function getMonthCalendar(
-  db: Database.Database,
-  year: number,
-  month: number
-): Record<string, boolean[]> {
-  const prefix = `${year}-${String(month).padStart(2, "0")}`;
-  const rows = db
-    .prepare(
-      `SELECT park_id, date, is_open
-       FROM park_days
-       WHERE date LIKE ? || '-%'
-       ORDER BY date`
-    )
-    .all(prefix) as { park_id: string; date: string; is_open: number }[];
-
-  const result: Record<string, boolean[]> = {};
-  for (const row of rows) {
-    if (!result[row.park_id]) result[row.park_id] = [];
-    const day = parseInt(row.date.slice(8), 10);
-    result[row.park_id][day - 1] = row.is_open === 1;
-  }
-  return result;
-}
-
-import { parseStalenessHours } from "./env";
-const STALE_AFTER_MS = parseStalenessHours(process.env.PARK_HOURS_STALENESS_HOURS, 72) * 60 * 60 * 1000;
-
-/**
- * Returns true when the scraper should skip this park+month.
- *
- * Two reasons to skip:
- * 1. The month is entirely in the past — the API will never return data for
- *    those dates again, so re-scraping wastes a call and risks nothing but
- *    wasted time. Historical records are preserved forever by upsertDay.
- * 2. The month was scraped within the last 7 days — data is still fresh.
- */
-export function isMonthScraped(
-  db: Database.Database,
-  parkId: string,
-  year: number,
-  month: number
-): boolean {
-  // Compute the last calendar day of this month (avoids timezone issues).
-  const daysInMonth = new Date(year, month, 0).getDate();
-  const lastDay = `${year}-${String(month).padStart(2, "0")}-${String(daysInMonth).padStart(2, "0")}`;
-  const today = new Date().toISOString().slice(0, 10);
-
-  // Past month — history is locked in, no API data available, always skip.
-  if (lastDay < today) return true;
-
-  // Current/future month — skip only if recently scraped.
-  const prefix = `${year}-${String(month).padStart(2, "0")}`;
-  const row = db
-    .prepare(
-      `SELECT MAX(scraped_at) AS last_scraped
-       FROM park_days
-       WHERE park_id = ? AND date LIKE ? || '-%'`
-    )
-    .get(parkId, prefix) as { last_scraped: string | null };
-
-  if (!row.last_scraped) return false;
-  const ageMs = Date.now() - new Date(row.last_scraped).getTime();
-  return ageMs < STALE_AFTER_MS;
-}
-
-export function getApiId(db: Database.Database, parkId: string): number | null {
-  const row = db
-    .prepare("SELECT api_id FROM park_api_ids WHERE park_id = ?")
-    .get(parkId) as { api_id: number } | undefined;
-  return row?.api_id ?? null;
-}
-
-export function setApiId(
-  db: Database.Database,
-  parkId: string,
-  apiId: number,
-  apiAbbreviation?: string,
-  apiName?: string
-) {
-  db.prepare(`
-    INSERT INTO park_api_ids (park_id, api_id, api_abbreviation, api_name, discovered_at)
-    VALUES (?, ?, ?, ?, ?)
-    ON CONFLICT (park_id) DO UPDATE SET
-      api_id           = excluded.api_id,
-      api_abbreviation = excluded.api_abbreviation,
-      api_name         = excluded.api_name,
-      discovered_at    = excluded.discovered_at
-  `).run(
-    parkId,
-    apiId,
-    apiAbbreviation ?? null,
-    apiName ?? null,
-    new Date().toISOString()
-  );
-}
-
-/**
- * Find the next park+month to scrape.
- * Priority: never-scraped first, then oldest scraped_at.
- * Considers current month through monthsAhead months into the future.
- */
-export function getNextScrapeTarget(
-  db: Database.Database,
-  parkIds: string[],
-  monthsAhead = 12
-): { parkId: string; year: number; month: number } | null {
-  const now = new Date();
-
-  const candidates: {
-    parkId: string;
-    year: number;
-    month: number;
-    lastScraped: string | null;
-  }[] = [];
-
-  for (const parkId of parkIds) {
-    for (let i = 0; i < monthsAhead; i++) {
-      const d = new Date(now.getFullYear(), now.getMonth() + i, 1);
-      const year = d.getFullYear();
-      const month = d.getMonth() + 1;
-      const prefix = `${year}-${String(month).padStart(2, "0")}`;
-
-      const row = db
-        .prepare(
-          `SELECT MAX(scraped_at) AS last_scraped
-           FROM park_days
-           WHERE park_id = ? AND date LIKE ? || '-%'`
-        )
-        .get(parkId, prefix) as { last_scraped: string | null };
-
-      candidates.push({ parkId, year, month, lastScraped: row.last_scraped });
-    }
-  }
-
-  // Never-scraped (null) first, then oldest scraped_at
-  candidates.sort((a, b) => {
-    if (!a.lastScraped && !b.lastScraped) return 0;
-    if (!a.lastScraped) return -1;
-    if (!b.lastScraped) return 1;
-    return a.lastScraped.localeCompare(b.lastScraped);
-  });
-
-  const top = candidates[0];
-  return top ? { parkId: top.parkId, year: top.year, month: top.month } : null;
-}

lib/types.ts

@@ -0,0 +1,5 @@
+export interface DayData {
+  isOpen: boolean;
+  hoursLabel: string | null;
+  specialType: string | null;
+}

next.config.ts

@@ -11,8 +11,6 @@ const CSP = [
 ].join("; ");
 
 const nextConfig: NextConfig = {
-  // better-sqlite3 is a native module — must not be bundled by webpack
-  serverExternalPackages: ["better-sqlite3"],
   output: "standalone",
 
   async headers() {

package.json

@@ -11,14 +11,12 @@
     "test": "tsx --test tests/*.test.ts"
   },
   "dependencies": {
-    "better-sqlite3": "^12.8.0",
     "next": "^15.3.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
-    "@types/better-sqlite3": "^7.6.13",
     "@types/node": "^22",
     "@types/react": "^19",
     "@types/react-dom": "^19",

tsconfig.json

@@ -23,5 +23,5 @@
     }
   },
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
-  "exclude": ["node_modules"]
+  "exclude": ["node_modules", "backend"]
 }