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import { eq, sql } from "drizzle-orm";
import { Hono } from "hono";
import { createDal, type Dal } from "../../dal";
import { getDb } from "../../db";
import * as schema from "../../db/schema";
import {
CACHE_KEYS,
CACHE_TTL,
createDualCache,
type DualCache,
} from "../../lib/cache";
import { handleError, success } from "../../lib/response";
import type { ContextVariables } from "../../middleware";
import { createServices, type Services } from "../../services";
import { enrichProjectsWithTaxonomy } from "./project-enrichment";
import { resolvePortfolioCoversForPros } from "./pros/taxonomy-enrichment";
import { buildRoomCategories } from "./room-categories.shared";
type Env = {
Bindings: CloudflareBindings;
Variables: ContextVariables;
};
type Db = ReturnType<typeof getDb>;
const homepage = new Hono<Env>();
// Sentinel thrown by the cache fetcher when there are no published pros. We
// throw rather than return the empty payload so `cache.getOrSet` never reaches
// its `put` — the empty state is computed but NEVER persisted. Previously the
// empty payload was returned normally and cached to L1 (60s) + L2 KV (300s),
// so a single transient zero-result (D1 blip, mid-deploy, or a query error
// surfacing as an empty array) pinned a "no pros/projects" homepage for up to
// 5 min even after pros were present. Root cause of the empty-homepage
// incident. Cache HITS still short-circuit before the fetcher runs, so the hot
// path keeps its zero extra DB queries.
class EmptyHomepageError extends Error {}
// Factory (not a shared constant) so each empty response gets its own fresh
// arrays — a shared object with nested arrays could be mutated by an accidental
// push in a caller or test and leak across requests.
const createEmptyHomepage = () => ({
featuredProject: null,
featuredMedia: [] as Array<{ storageKey: string; roomName: string }>,
latestProjects: [] as Awaited<ReturnType<typeof enrichProjectsWithTaxonomy>>,
featuredPros: [] as Array<Record<string, unknown>>,
roomCategories: [] as Array<{
value: string;
label: string;
coverImage: string | null;
projectCount: number;
}>,
stats: { prosCount: 0, projectsCount: 0 },
});
// GET /api/marketplace/homepage — all homepage data in one call
homepage.get("/", async (c) => {
try {
const cache = c.get("cache");
const services = c.get("services");
const dal = c.get("dal");
const db = c.get("db");
let data: Awaited<ReturnType<typeof buildHomepageData>>;
try {
data = await cache.getOrSet(
CACHE_KEYS.MARKETPLACE_HOMEPAGE,
() => buildHomepageData(services, dal, db),
{
l1Ttl: CACHE_TTL.MARKETPLACE_HOMEPAGE_L1,
l2Ttl: CACHE_TTL.MARKETPLACE_HOMEPAGE_L2,
},
);
} catch (err) {
// No published pros — return the empty homepage WITHOUT caching it.
if (err instanceof EmptyHomepageError) {
return success(c, createEmptyHomepage());
}
throw err;
}
// Pre-warm room-categories cache from homepage data (background, non-blocking)
if (data.roomCategories?.length > 0) {
c.executionCtx.waitUntil(
cache.put(CACHE_KEYS.MARKETPLACE_ROOM_CATEGORIES, data.roomCategories, {
l1Ttl: CACHE_TTL.MARKETPLACE_ROOM_CATEGORIES_L1,
l2Ttl: CACHE_TTL.MARKETPLACE_ROOM_CATEGORIES_L2,
}),
);
}
return success(c, data);
} catch (err) {
return handleError(c, err);
}
});
// Builds the populated homepage payload. Throws EmptyHomepageError when no
// pros are published so the caller can return an uncached empty response.
// Takes explicit deps (not a Hono Context) so the scheduled warmer can call it
// outside a request.
async function buildHomepageData(services: Services, dal: Dal, db: Db) {
// Step 1: Get published pro IDs (needed for all queries)
const publishedProIds = await dal.pros.findIdsByStatus("published");
if (publishedProIds.length === 0) {
throw new EmptyHomepageError();
}
// Step 2: Run all independent queries in parallel.
// Curation flow:
// - heroResult — admin-pinned singleton; null fallback below.
// - latestProjectsResult — prefer isFeatured=true first; backfilled
// below if fewer than 12 featured projects exist.
const [
heroResult,
latestProjectsResult,
featuredProsResult,
prosCountResult,
projectsCountResult,
allRoomTypes,
] = await Promise.all([
// Admin-pinned hero (singleton). Falls back to algorithm if empty.
services.project.list(
{
status: "published",
requirePublishedPro: true,
isHero: true,
},
1,
1,
),
// Featured projects first; backfill with latest below if < 12.
// Use requirePublishedPro instead of passing publishedProIds as
// a bind list so this filter stays safe as the pro roster grows
// past D1's 100-parameter limit (see error-reports/2026-04-20).
services.project.list(
{
status: "published",
requirePublishedPro: true,
isFeatured: true,
},
1,
12,
),
// Featured pros: 6 published pros, preferring isFeatured=true
services.pro.list(
{
status: "published",
isFeatured: true,
},
1,
6,
),
// Stats: total published pros
db
.select({ count: sql<number>`count(*)` })
.from(schema.pros)
.where(eq(schema.pros.status, "published")),
// Stats: total published projects
db
.select({ count: sql<number>`count(*)` })
.from(schema.projects)
.where(eq(schema.projects.status, "published")),
// All room types for categories
db.select().from(schema.roomTypes),
]);
// If we didn't get 12 featured projects, backfill with non-featured
// (latest-by-date). Mirrors the featured-pros backfill below.
const projectsData = latestProjectsResult.projects;
if (projectsData.length < 12) {
const backfill = await services.project.list(
{ status: "published", requirePublishedPro: true },
1,
12,
);
const seenIds = new Set(projectsData.map((p) => p.id));
for (const project of backfill.projects) {
if (!seenIds.has(project.id) && projectsData.length < 12) {
projectsData.push(project);
seenIds.add(project.id);
}
}
}
// Admin hero override (singleton). Ensure the hero row is enriched
// + present in the rooms/media fetch even when it would otherwise
// fall outside the latest-12 window.
const adminHero = heroResult.projects[0] ?? null;
if (adminHero && !projectsData.some((p) => p.id === adminHero.id)) {
projectsData.unshift(adminHero);
}
// If we didn't get 6 featured pros, backfill with non-featured
const prosData = featuredProsResult.pros;
if (prosData.length < 6) {
const backfillResult = await services.pro.list(
{ status: "published" },
1,
6,
);
// Merge: featured first, then non-featured, deduplicated
const seenIds = new Set(prosData.map((p) => p.id));
for (const pro of backfillResult.pros) {
if (!seenIds.has(pro.id) && prosData.length < 6) {
prosData.push(pro);
seenIds.add(pro.id);
}
}
}
// Step 3: Enrich projects with taxonomy data (includes pro info, covers)
const enrichedProjects = await enrichProjectsWithTaxonomy(
db,
services,
dal,
projectsData,
);
// Step 4: Find featured project.
// If admin pinned a hero, prefer it (no minimum-media gate — the
// admin chose explicitly). Otherwise fall back to the algorithm:
// first project with 3+ media items, then any project with media.
let featuredProject = null;
let featuredMedia: Array<{
storageKey: string;
roomName: string;
}> = [];
const projectIds = projectsData.map((p) => p.id);
if (projectIds.length > 0) {
const allRooms = await dal.rooms.findByProjectIds(projectIds);
const allRoomIds = allRooms.map((r) => r.id);
const allMedia =
allRoomIds.length > 0 ? await dal.media.findByRoomIds(allRoomIds) : [];
// Group media by project (via rooms)
const roomToProject = new Map<number, string>();
for (const room of allRooms) {
roomToProject.set(room.id, room.projectId);
}
const mediaByProject = new Map<
string,
Array<{
storageKey: string;
roomId: number;
}>
>();
for (const m of allMedia) {
const projId = roomToProject.get(m.roomId);
if (!projId) continue;
const existing = mediaByProject.get(projId) ?? [];
existing.push({
storageKey: m.storageKey,
roomId: m.roomId,
});
mediaByProject.set(projId, existing);
}
// Build room name lookup
const roomNameMap = new Map<number, string>();
const roomTypeMap = new Map<string, string>();
for (const rt of allRoomTypes) {
roomTypeMap.set(rt.code, rt.displayName);
}
for (const room of allRooms) {
roomNameMap.set(
room.id,
room.name ?? roomTypeMap.get(room.roomType) ?? room.roomType,
);
}
// Admin hero override: prefer room media; fall back to
// project.coverImage when no rooms exist (e.g. seed data,
// freshly-created projects). Admin intent always wins.
if (adminHero) {
const enrichedHero = enrichedProjects.find((p) => p.id === adminHero.id);
if (enrichedHero) {
const heroMedia = mediaByProject.get(adminHero.id);
if (heroMedia && heroMedia.length > 0) {
featuredProject = enrichedHero;
featuredMedia = heroMedia.map((m) => ({
storageKey: m.storageKey,
roomName: roomNameMap.get(m.roomId) ?? "",
}));
E} else if (adminHero.coverImage) {
// No room media — use the project cover image directly.
featuredProject = enrichedHero;
featuredMedia = [{ storageKey: adminHero.coverImage, roomName: "" }];
}
}
}
// Algorithm fallback: first project with 3+ media items.
if (!featuredProject) {
for (const project of enrichedProjects) {
const projectMedia = mediaByProject.get(project.id);
Eif (projectMedia && projectMedia.length >= 3) {
featuredProject = project;
featuredMedia = projectMedia.map((m) => ({
storageKey: m.storageKey,
roomName: roomNameMap.get(m.roomId) ?? "",
}));
break;
}
}
}
// Fallback: use first project with any media
Iif (!featuredProject && enrichedProjects.length > 0) {
for (const project of enrichedProjects) {
const projectMedia = mediaByProject.get(project.id);
if (projectMedia && projectMedia.length > 0) {
featuredProject = project;
featuredMedia = projectMedia.map((m) => ({
storageKey: m.storageKey,
roomName: roomNameMap.get(m.roomId) ?? "",
}));
break;
}
}
}
}
// Step 5: Build featured pros with portfolio covers.
// Uses the same rooms→media cascade as `/api/marketplace/pros`
// so pros whose photos live only in rooms/media (NULL
// `projects.coverImage`) still render a hero instead of the
// "No portfolio yet" placeholder. See PR #740.
const proIds = prosData.map((p) => p.id);
const coversByProId = await resolvePortfolioCoversForPros(db, dal, proIds);
const featuredPros = prosData.map((pro) => ({
id: pro.id,
businessName: pro.businessName,
slug: pro.slug,
profileImage: pro.profileImage,
logoUrl: pro.logoUrl,
isFeatured: pro.isFeatured,
portfolioCovers: coversByProId.get(pro.id) ?? [],
}));
// Step 6: Build room categories with cover images and project counts.
// Delegates to the shared cheap builder (sample-room + media pick, no
// correlated per-room-type subqueries) — the same code path the standalone
// `/api/marketplace/room-categories` endpoint uses. The previous inline
// 3-tier correlated COALESCE was O(room_types × media_rows) and timed out at
// prod scale (the homepage 503 incident). Fault-isolated: a slow/failed
// categories build degrades to [] instead of sinking the whole homepage.
let roomCategories: Array<{
value: string;
label: string;
coverImage: string | null;
projectCount: number;
}> = [];
try {
const built = await buildRoomCategories(db, dal);
roomCategories = built.map(
({ value, label, coverImage, projectCount }) => ({
value,
label,
coverImage,
projectCount,
}),
);
} catch {
// Degrade gracefully — room categories are non-critical, so a failed
// build leaves them empty while the rest of the homepage still renders.
roomCategories = [];
}
return {
featuredProject,
featuredMedia,
latestProjects: enrichedProjects,
featuredPros,
roomCategories,
stats: {
prosCount: prosCountResult[0]?.count ?? 0,
projectsCount: projectsCountResult[0]?.count ?? 0,
},
};
}
/**
* Keep the homepage cache hot from the scheduled (cron) worker.
*
* The consolidated homepage payload is cheap-ish but still ~10 D1 reads
* (enrichment + rooms/media + pro covers). On a *cold* cache miss — every L2 TTL
* expiry, or under D1 contention from the faceted-listing crawl — a user-facing
* rebuild can exceed the marketplace SSR's 4s fetch timeout and 503 the homepage
* (incident 2026-06-22). The cron has no 4s budget, so it can rebuild slowly and
* write KV; user requests then always hit the warm L2 entry (~0ms D1).
*
* Pairs with an L2 TTL longer than the cron interval so the entry never lapses
* between warms. No-ops gracefully on an empty platform (no published pros) so
* we never pin an empty homepage.
*/
export async function warmHomepageCache(
env: CloudflareBindings,
): Promise<void> {
const db = getDb(env.DB);
const cache = createDualCache(env.KV_CACHE);
const dal = createDal(db, cache, env);
const services = createServices(dal, env);
await warmHomepageInto(cache, services, dal, db);
}
/**
* Testable core of the warmer: build the homepage payload and write it (plus the
* room-categories entry) to the given cache. No-ops on an empty platform so an
* empty homepage is never pinned.
*/
export async function warmHomepageInto(
cache: DualCache,
services: Services,
dal: Dal,
db: Db,
): Promise<void> {
let data: Awaited<ReturnType<typeof buildHomepageData>>;
try {
data = await buildHomepageData(services, dal, db);
} catch (err) {
// Empty platform — don't cache an empty homepage (mirrors the route).
Eif (err instanceof EmptyHomepageError) return;
throw err;
}
await cache.put(CACHE_KEYS.MARKETPLACE_HOMEPAGE, data, {
l1Ttl: CACHE_TTL.MARKETPLACE_HOMEPAGE_L1,
l2Ttl: CACHE_TTL.MARKETPLACE_HOMEPAGE_L2,
});
// Also refresh the room-categories cache the homepage pre-warms on the hot path.
Iif (data.roomCategories.length > 0) {
await cache.put(
CACHE_KEYS.MARKETPLACE_ROOM_CATEGORIES,
data.roomCategories,
{
l1Ttl: CACHE_TTL.MARKETPLACE_ROOM_CATEGORIES_L1,
l2Ttl: CACHE_TTL.MARKETPLACE_ROOM_CATEGORIES_L2,
},
);
}
}
export default homepage;
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