Add action

action.yml

@@ -1,7 +1,28 @@
 name: Mixpanel Annotate
 description: Creates a Mixpanel Annotation
 inputs:
+  description:
+    description: The text that will be shown when looking at the annotation
+    required: true
+  date:
+    description: Date of the Annotation (format: YYYY-MM-DD HH:mm:ss)
+    required: false
+  project_id:
+    description: Mixpanel Project ID
+    required: true
+  service_account_username:
+    description: Mixpanel Service Account Username
+    required: true
+  service_account_password:
+    description: Mixpanel Service Account Password
+    required: true
 outputs:
+  description:
+    description: The text that will be shown when looking at the annotation
+  date:
+    description: Date of the Annotation (format: YYYY-MM-DD HH:mm:ss)
+  id:
+    description: Annotation ID
 runs:
   using: 'node16'
   main: 'dist/index.js'

index.js

@@ -1,7 +1,41 @@
 const core = require('@actions/core');
-
+const { HttpClient } = require('@actions/http-client');
+const { BasicCredentialHandler } = require('@actions/http-client/lib/auth');
 
 async function run() {
+  var description = core.getInput('description');
+  var date = core.getInput('date');
+  const project_id = core.getInput('project_id');
+  const service_account_username = core.getInput('service_account_username');
+  const service_account_password = core.getInput('service_account_password');
+
+  const http = new HttpClient('http', [
+    new BasicCredentialHandler(
+      service_account_username, service_account_password,
+    ),
+  ]);
+
+  const res = await http.post(
+    `https://mixpanel.com/api/app/projects/${project_id}/annotations`,
+    JSON.stringify({
+      'description': description,
+      'date': date,
+    }),
+    {
+      'Accept': 'application/json', 
+      'Content-Type': 'application/json',
+    }
+  );
+
+  const obj = JSON.parse(await res.readBody());
+  const { status, error } = obj;
+
+  if (status === 'error') return core.setFailed(error);
+
+  var { description, date, id } = obj;
+  core.setOutput('description', description);
+  core.setOutput('date', date);
+  core.setOutput('id', id);
 }
 
 run();