fix: support custom posthog endpoints

packages/posthog-generator/src/bin.ts

@@ -10,7 +10,7 @@ import path from "node:path";
 
 let posthogToken = process.env.POSTHOG_API_KEY;
 let posthogProjectId = process.env.POSTHOG_PROJECT_ID;
-
+let posthogEndpoint = process.env.POSTHOG_ENDPOINT || "app.posthog.com";
 export async function generateTypeScriptFile(events: PostHogEvent[]) {
   const eventMap = events.reduce(
     (acc, event) => {
@@ -89,7 +89,7 @@ function fetchFromPosthog<T extends keyof PostHogEndpoints>(
   } = {}
 ) {
   // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-  const url = `https://app.posthog.com/api/projects/${posthogProjectId!}/${endpoint}/?${toParams(
+  const url = `https:/${posthogEndpoint}//api/projects/${posthogProjectId!}/${endpoint}/?${toParams(
     options.queryParams ?? {}
   )}`;
   return fetch(options.url ?? url, {
@@ -156,6 +156,12 @@ async function generate() {
       })
     ).toString();
   }
+  if (!process.env.POSTHOG_ENDPOINT) {
+    posthogEndpoint = (await text({
+      message: `No value for POSTHOG_ENDPOINT found in environment variables. Please enter your PostHog endpoint or leave blank to use ${posthogEndpoint}`,
+      defaultValue: posthogEndpoint
+    })).toString()
+  }
   const data = await fetchAllEvents();
   const events: PostHogEvent[] = [];
   log.step(

packages/posthog/src/index.ts

@@ -532,7 +532,7 @@ class PostHogQuery<
       smoothing_intervals: options.smoothing_intervals,
     };
     const encodedQueryString = toParams(reqData);
-    const url = `https://app.posthog.com/api/projects/${this.config.projectId}/insights/trend/?${encodedQueryString}`;
+    const url = `${this.config.url}/insights/trend/?${encodedQueryString}`;
     const fetchResponse = await fetch(url, {
       headers: {
         Authorization: `Bearer ${this.config.apiKey}`,
@@ -633,7 +633,7 @@ export class PostHog<const Events extends _ExtendOnlyEventMap> {
     }
     const url =
       opts?.url ??
-      process.env.POSTHOG_URL ??
+      process.env.POSTHOG_ENDPOINT ??
       `https://app.posthog.com/api/projects/${projectId}/`;
     this.config = {
       apiKey,