Zillow API migration: map the old calls to JSON

// Before: Zillow Web Services (retired 2021)
const url = "http://www.zillow.com/webservice/GetDeepSearchResults.htm"
  + "?zws-id=" + ZWSID
  + "&address=" + encodeURIComponent("1600 Main St")
  + "&citystatezip=" + encodeURIComponent("Austin, TX 78701")
  + "&rentzestimate=true";
// -> XML, now 410 Gone

// After: PropertiesAPI (JSON)
const u = new URL("https://api.propertiesapi.com/v1/zillow/property");
u.searchParams.set("address", "1600 Main St, Austin, TX 78701");

const res = await fetch(u, {
  headers: { "x-api-key": process.env.PROPERTIESAPI_KEY },
  signal: AbortSignal.timeout(120_000), // live lookup: typically 8 seconds, up to about 20
});
if (res.status === 404) throw new Error("no matching Zillow property");
const { data: p } = await res.json();

// Shape it like your old code expects
const result = {
  zpid: p.zpid,
  links: { homedetails: p.detailUrl },
  zestimate: { amount: p.zestimate },
  rentzestimate: { amount: p.rentZestimate },
  bedrooms: p.beds, bathrooms: p.baths, finishedSqFt: p.livingArea,
  lotSizeSqFt: p.lotSize, yearBuilt: p.yearBuilt,
};

import os, requests

KEY = {"x-api-key": os.environ["PROPERTIESAPI_KEY"]}
BASE = "https://api.propertiesapi.com/v1"

# GetZestimate (you stored ZPIDs): send the address or Zillow link you stored with it
p = requests.get(
    f"{BASE}/zillow/property",
    params={"address": "1600 Main St, Austin, TX 78701"},
    headers=KEY,
    timeout=120,
).json()["data"]
print(p["zestimate"], p["rentZestimate"])

# Many old GetSearchResults calls at once: POST /v1/zillow/batch (up to 50 per request)
addresses = ["1600 Main St, Austin, TX 78701", "350 5th Ave, New York, NY 10118"]
r = requests.post(
    f"{BASE}/zillow/batch",
    json={"items": addresses},
    headers=KEY,
    timeout=320,
)
for item in r.json()["data"]:   # same order as items
    print(addresses[item["index"]], item["data"]["zestimate"] if item["ok"] else "not found")