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Add slice function to CloudFlare worker #1

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IsraelHikingHost wants to merge 2 commits into from
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Add slice function to CloudFlare worker #1

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e628a5f
Add slice function to CloudeFlare worker
IsraelHikingHost Nov 19, 2025
9a34cb3
Remove unnecessary blank line in index.ts
IsraelHikingHost Nov 19, 2025
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31 changes: 30 additions & 1 deletion serverless/cloudflare/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,35 @@ class R2Source implements Source {
}
}

export const slice = (input: {
ok: boolean;
name: string;
tile?: [number, number, number];
ext: string;
}): {
ok: boolean;
name: string;
tile?: [number, number, number];
ext: string;
} => {
// pass through inapplicable inputs unchanged
if (!input.ok || !input.tile || input.name !== "OSM_traces") return input;

const [z, x, y] = input.tile;
if (z < 7) return { ok: false, name: "", tile: [0, 0, 0], ext: "" };

const shift = z - 7;
const nameX = x >> shift;
const nameY = y >> shift;

return {
ok: true,
name: `7/${nameX}/${nameY}/${input.name}+7-${nameX}-${nameY}`,
tile: input.tile,
ext: input.ext,
};
};

export default {
async fetch(
request: Request,
Expand All @@ -97,7 +126,7 @@ export default {
return new Response(undefined, { status: 405 });

const url = new URL(request.url);
const { ok, name, tile, ext } = tile_path(url.pathname);
const { ok, name, tile, ext } = slice(tile_path(url.pathname));

const cache = caches.default;

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