66 lines
2.1 KiB
TypeScript
66 lines
2.1 KiB
TypeScript
import { NextRequest, NextResponse } from "next/server";
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import { sql } from "@/lib/db";
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export const runtime = "nodejs";
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export async function GET(
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req: NextRequest,
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{ params }: { params: Promise<{ tile: string[] }> },
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) {
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const { tile } = await params;
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if (tile.length !== 3) {
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return new NextResponse("Invalid tile path", { status: 400 });
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}
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const z = parseInt(tile[0], 10);
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const x = parseInt(tile[1], 10);
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const y = parseInt(tile[2], 10);
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if ([z, x, y].some(isNaN)) {
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return new NextResponse("Invalid tile coordinates", { status: 400 });
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}
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const city = req.nextUrl.searchParams.get("city") ?? "";
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if (!city) return new NextResponse("Missing city", { status: 400 });
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try {
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const rows = await Promise.resolve(sql<{ mvt: Uint8Array }[]>`
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WITH
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envelope AS (SELECT ST_TileEnvelope(${z}, ${x}, ${y}) AS env),
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city_info AS (SELECT COALESCE(resolution_m, 200) AS resolution_m FROM cities WHERE slug = ${city})
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SELECT ST_AsMVT(t, 'hidden-gems', 4096, 'geom') AS mvt
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FROM (
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SELECT
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ST_AsMVTGeom(
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ST_Expand(ST_Transform(gp.geom, 3857), ci.resolution_m::float / 2),
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e.env,
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4096, 0, true
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) AS geom,
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ROUND(gp.hidden_gem_score * 100)::int AS score
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FROM grid_points gp
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CROSS JOIN envelope e
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CROSS JOIN city_info ci
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WHERE gp.city_slug = ${city}
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AND gp.hidden_gem_score IS NOT NULL
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AND ST_Intersects(
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ST_Transform(gp.geom, 3857),
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ST_Expand(e.env, ci.resolution_m::float / 2)
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)
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) t
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WHERE t.geom IS NOT NULL
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`);
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const buf = rows[0]?.mvt;
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const data = buf ? new Uint8Array(buf) : new Uint8Array(0);
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return new NextResponse(data, {
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headers: {
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"Content-Type": "application/x-protobuf",
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"Cache-Control": "public, max-age=3600",
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"Access-Control-Allow-Origin": "*",
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},
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});
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} catch (err) {
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console.error("[tiles/hidden-gems] Error:", err);
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return new NextResponse("Internal Server Error", { status: 500 });
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}
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}
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