52 lines
1.6 KiB
TypeScript
52 lines
1.6 KiB
TypeScript
// Next.js API route support: https://vercel.com/docs/concepts/functions/serverless-functions
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import type { NextApiRequest, NextApiResponse } from 'next'
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import { listAllContracts } from 'web/lib/firebase/contracts'
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import { applyCorsHeaders, CORS_UNRESTRICTED } from 'web/lib/api/cors'
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import { toLiteMarket, ValidationError } from './_types'
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import { z } from 'zod'
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import { validate } from './_validate'
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const queryParams = z
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.object({
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limit: z
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.number()
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.default(500)
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.or(z.string().regex(/\d+/).transform(Number))
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.refine((n) => n >= 0 && n <= 1000, 'Limit must be between 0 and 1000'),
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before: z.string().optional(),
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})
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.strict()
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export default async function handler(
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req: NextApiRequest,
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res: NextApiResponse
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) {
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await applyCorsHeaders(req, res, CORS_UNRESTRICTED)
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let params: z.infer<typeof queryParams>
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try {
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params = validate(queryParams, req.query)
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} catch (e) {
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if (e instanceof ValidationError) {
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return res.status(400).json(e)
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}
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console.error(`Unknown error during validation: ${e}`)
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return res.status(500).json({ error: 'Unknown error during validation' })
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}
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const { limit, before } = params
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try {
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const contracts = await listAllContracts(limit, before)
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// Serve from Vercel cache, then update. see https://vercel.com/docs/concepts/functions/edge-caching
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res.setHeader('Cache-Control', 's-maxage=1, stale-while-revalidate')
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res.status(200).json(contracts.map(toLiteMarket))
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} catch (e) {
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res.status(400).json({
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error:
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'Failed to fetch markets (did you pass an invalid ID as the before parameter?)',
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})
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return
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}
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}
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