From 74cb98fc728019683bcc2edf528f353ca2ab7d8a Mon Sep 17 00:00:00 2001
From: Caleb Bae <baecal000@gmail.com>
Date: Wed, 9 Sep 2026 22:46:23 +0000
Subject: [PATCH] ci: deploy Modal service on push to main

Runs 'modal deploy run-service/modal_app.py' when a push to main touches
run-service/ (or via workflow_dispatch). Needs MODAL_TOKEN_ID and
MODAL_TOKEN_SECRET as repository Actions secrets.
---
 .github/workflows/modal-deploy.yml | 34 ++++++++++++++++++++++++++++++
 README.md                          |  5 +++++
 2 files changed, 39 insertions(+)
 create mode 100644 .github/workflows/modal-deploy.yml

diff --git a/.github/workflows/modal-deploy.yml b/.github/workflows/modal-deploy.yml
new file mode 100644
index 0000000..7adb5cf
--- /dev/null
+++ b/.github/workflows/modal-deploy.yml
@@ -0,0 +1,34 @@
+name: Deploy Modal service
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "run-service/**"
+  workflow_dispatch:
+
+concurrency:
+  group: modal-deploy
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: run-service
+    env:
+      MODAL_TOKEN_ID: ${{ secrets.MODAL_TOKEN_ID }}
+      MODAL_TOKEN_SECRET: ${{ secrets.MODAL_TOKEN_SECRET }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - run: pip install modal
+
+      - run: python -m py_compile modal_app.py
+
+      - run: modal deploy modal_app.py
diff --git a/README.md b/README.md
index 3fabdcb..0283aed 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,11 @@ The core separation happens in `run-service/modal_app.py`:
 
    Copy the web endpoint URL to your `.env.local`.
 
+   **Automatic deploys:** `.github/workflows/modal-deploy.yml` runs `modal deploy` whenever a
+   push to `main` touches `run-service/` (or manually via *Actions → Deploy Modal service → Run
+   workflow*). Add `MODAL_TOKEN_ID` and `MODAL_TOKEN_SECRET` as repository Actions secrets
+   (create a token at https://modal.com/settings/tokens).
+
    To test the service without the frontend:
    ```bash
    modal run modal_app.py --path ./sermon.mp3 --out-dir ./out