94 lines
2.9 KiB
JavaScript
94 lines
2.9 KiB
JavaScript
import connectToDb from "../src/server/db";
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import { getPoseFromPetState, normalizeRow } from "../src/server/util";
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export async function getValidPetPoses() {
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const db = await connectToDb();
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const numSpeciesPromise = getNumSpecies(db);
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const numColorsPromise = getNumColors(db);
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const distinctPetStatesPromise = getDistinctPetStates(db);
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const [numSpecies, numColors, distinctPetStates] = await Promise.all([
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numSpeciesPromise,
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numColorsPromise,
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distinctPetStatesPromise,
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]);
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const poseStrs = new Set();
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for (const petState of distinctPetStates) {
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const { speciesId, colorId } = petState;
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const pose = getPoseFromPetState(petState);
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const poseStr = `${speciesId}-${colorId}-${pose}`;
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poseStrs.add(poseStr);
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}
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function hasPose(speciesId, colorId, pose) {
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const poseStr = `${speciesId}-${colorId}-${pose}`;
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return poseStrs.has(poseStr);
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}
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const numPairs = numSpecies * numColors;
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const buffer = Buffer.alloc(numPairs + 2);
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buffer.writeUInt8(numSpecies, 0);
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buffer.writeUInt8(numColors, 1);
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for (let speciesId = 1; speciesId <= numSpecies; speciesId++) {
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const speciesIndex = speciesId - 1;
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for (let colorId = 1; colorId <= numColors; colorId++) {
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const colorIndex = colorId - 1;
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// We fill in the high bits first, and shift left as we go!
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let byte = 0;
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byte += hasPose(speciesId, colorId, "UNKNOWN") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "UNCONVERTED") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "SICK_FEM") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "SAD_FEM") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "HAPPY_FEM") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "SICK_MASC") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "SAD_MASC") ? 1 : 0;
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byte <<= 1;
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byte += hasPose(speciesId, colorId, "HAPPY_MASC") ? 1 : 0;
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buffer.writeUInt8(byte, speciesIndex * numColors + colorIndex + 2);
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}
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}
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return buffer;
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}
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async function getNumSpecies(db) {
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const [rows, _] = await db.query(`SELECT count(*) FROM species`);
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return rows[0]["count(*)"];
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}
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async function getNumColors(db) {
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const [rows, _] = await db.query(
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`SELECT count(*) FROM colors WHERE prank = 0`
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);
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return rows[0]["count(*)"];
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}
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async function getDistinctPetStates(db) {
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const [rows, _] = await db.query(`
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SELECT DISTINCT species_id, color_id, mood_id, female, unconverted
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FROM pet_states
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INNER JOIN pet_types ON pet_types.id = pet_states.pet_type_id
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WHERE color_id >= 1`);
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return rows.map(normalizeRow);
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}
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export default async (req, res) => {
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const buffer = await getValidPetPoses();
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// Cache for 1 hour. This will also cache at Vercel's CDN, so the function
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// shouldn't even get run very often at all!
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res.setHeader("Cache-Control", "max-age=3600");
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res.status(200).send(buffer);
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};
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