Add lite market endpoint

web/pages/api/v0/market/[id]/lite.ts

@@ -0,0 +1,23 @@
+import { NextApiRequest, NextApiResponse } from 'next'
+import { getContractFromId } from 'web/lib/firebase/contracts'
+import { applyCorsHeaders, CORS_UNRESTRICTED } from 'web/lib/api/cors'
+import { ApiError, toLiteMarket, LiteMarket } from '../../_types'
+
+export default async function handler(
+  req: NextApiRequest,
+  res: NextApiResponse<LiteMarket | ApiError>
+) {
+  await applyCorsHeaders(req, res, CORS_UNRESTRICTED)
+  const { id } = req.query
+  const contractId = id as string
+
+  const contract = await getContractFromId(contractId)
+
+  if (!contract) {
+    res.status(404).json({ error: 'Contract not found' })
+    return
+  }
+
+  res.setHeader('Cache-Control', 'max-age=0')
+  return res.status(200).json(toLiteMarket(contract))
+}