import { NextResponse } from "next/server";
import { eq } from "drizzle-orm";
import { getDb, models } from "@/db";
import { curatePublicModels, PUBLIC_MODELS_MAX } from "@/lib/marketing/public-models";
import { log } from "@/lib/log";

export const dynamic = "force-dynamic";

const CACHE = "public, max-age=600, s-maxage=600, stale-while-revalidate=300";

/**
 * GET /api/public/models — unauthenticated, cached 10 minutes.
 * A compact list (≤ 40) of active/preview models from the registry for the marketing site:
 * key, displayName, provider, contextTokens, inputPerMillion, outputPerMillion, status, firstSeenAt.
 * No user data, no favorites, no keys — the same facts the public /models page shows.
 */
export async function GET() {
  try {
    const rows = await getDb()
      .select({
        key: models.key,
        displayName: models.displayName,
        provider: models.provider,
        limits: models.limits,
        pricing: models.pricing,
        status: models.status,
        sortWeight: models.sortWeight,
        firstSeenAt: models.firstSeenAt,
        hidden: models.hidden,
      })
      .from(models)
      .where(eq(models.hidden, false));

    const list = curatePublicModels(
      rows.map((r) => ({
        key: r.key,
        displayName: r.displayName,
        provider: r.provider,
        contextTokens: r.limits?.contextTokens ?? null,
        inputPerMillion: r.pricing?.inputPerMillion ?? null,
        outputPerMillion: r.pricing?.outputPerMillion ?? null,
        status: r.status,
        sortWeight: r.sortWeight,
        firstSeenAt: r.firstSeenAt,
        hidden: r.hidden,
      })),
      new Date(),
      PUBLIC_MODELS_MAX,
    );

    return NextResponse.json({ models: list, total: rows.length, generatedAt: new Date().toISOString() }, { headers: { "Cache-Control": CACHE } });
  } catch (e) {
    log.warn("public models failed", { error: (e as Error).message });
    return NextResponse.json({ models: [], total: 0, generatedAt: new Date().toISOString() }, { status: 503, headers: { "Cache-Control": "public, max-age=60" } });
  }
}