From 552dd7ae16b2c16e872881af2d86bb25cde855fd Mon Sep 17 00:00:00 2001
From: MCVelasquez45 <160294290+MCVelasquez45@users.noreply.github.com>
Date: Tue, 26 Aug 2025 22:00:08 -0700
Subject: [PATCH 1/2] chore: add model-service and update .gitignore

---
 .gitignore                        |  2 +
 model-service/.env.example        |  5 +++
 model-service/.gitignore          |  5 +++
 model-service/Procfile            |  2 +
 model-service/ecosystem.config.js | 16 ++++++++
 model-service/package.json        | 20 ++++++++++
 model-service/server.js           | 64 +++++++++++++++++++++++++++++++
 7 files changed, 114 insertions(+)
 create mode 100644 model-service/.env.example
 create mode 100644 model-service/.gitignore
 create mode 100644 model-service/Procfile
 create mode 100644 model-service/ecosystem.config.js
 create mode 100644 model-service/package.json
 create mode 100644 model-service/server.js

diff --git a/.gitignore b/.gitignore
index 68bc17f9..4d5863b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -158,3 +158,5 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+model-service/.env
+model-service/.env
diff --git a/model-service/.env.example b/model-service/.env.example
new file mode 100644
index 00000000..6f572180
--- /dev/null
+++ b/model-service/.env.example
@@ -0,0 +1,5 @@
+OPENAI_BASE_URL=https://api.openai.com/v1
+OPENAI_API_KEY=sk-REPLACE_ME
+MODEL_NAME=gpt-4o-mini
+PORT=7071
+
diff --git a/model-service/.gitignore b/model-service/.gitignore
new file mode 100644
index 00000000..e2e4726c
--- /dev/null
+++ b/model-service/.gitignore
@@ -0,0 +1,5 @@
+package-lock.json
+node_modules/
+.env
+.DS_Store
+
diff --git a/model-service/Procfile b/model-service/Procfile
new file mode 100644
index 00000000..3e0e4456
--- /dev/null
+++ b/model-service/Procfile
@@ -0,0 +1,2 @@
+web: node server.js
+
diff --git a/model-service/ecosystem.config.js b/model-service/ecosystem.config.js
new file mode 100644
index 00000000..141710e5
--- /dev/null
+++ b/model-service/ecosystem.config.js
@@ -0,0 +1,16 @@
+module.exports = {
+  apps: [
+    {
+      name: 'reentry-model-service',
+      script: 'server.js',
+      instances: 1,
+      exec_mode: 'fork',
+      env: {
+        // server.js loads dotenv; these are optional overrides
+        PORT: process.env.PORT || 7071,
+      },
+      watch: false,
+    },
+  ],
+};
+
diff --git a/model-service/package.json b/model-service/package.json
new file mode 100644
index 00000000..5a8fb84d
--- /dev/null
+++ b/model-service/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "reentry-model-service",
+  "version": "1.0.0",
+  "private": true,
+  "main": "server.js",
+  "license": "UNLICENSED",
+  "scripts": {
+    "dev": "node server.js",
+    "start": "node server.js",
+    "pm2": "pm2 start ecosystem.config.js"
+  },
+  "dependencies": {
+    "dotenv": "^16.4.5",
+    "express": "^4.19.2",
+    "node-fetch": "^2.7.0"
+  },
+  "engines": {
+    "node": ">=18"
+  }
+}
diff --git a/model-service/server.js b/model-service/server.js
new file mode 100644
index 00000000..fadf390c
--- /dev/null
+++ b/model-service/server.js
@@ -0,0 +1,64 @@
+const express = require('express');
+const fetch = require('node-fetch');
+const dotenv = require('dotenv');
+
+dotenv.config();
+
+const app = express();
+app.use(express.json());
+
+const PORT = process.env.PORT || 7071;
+const OPENAI_BASE_URL = (process.env.OPENAI_BASE_URL || 'https://api.openai.com/v1').replace(/\/+$/, '');
+const OPENAI_API_KEY = process.env.OPENAI_API_KEY || '';
+const MODEL_NAME = process.env.MODEL_NAME || 'gpt-4o-mini';
+
+// Health endpoint
+app.get('/health', (_req, res) => {
+  res.json({ ok: true, model: MODEL_NAME, base: OPENAI_BASE_URL });
+});
+
+// Generate endpoint - forwards to provider-compatible chat/completions
+app.post('/generate', async (req, res) => {
+  try {
+    if (!OPENAI_API_KEY) {
+      return res.status(400).json({ error: 'Missing OPENAI_API_KEY in environment' });
+    }
+
+    const body = req.body || {};
+    const messages = body.messages;
+    const model = body.model || MODEL_NAME;
+    const extra = body.extra || {}; // allow optional pass-through params
+
+    if (!Array.isArray(messages) || messages.length === 0) {
+      return res.status(400).json({ error: 'Body must include messages: [{ role, content }]' });
+    }
+
+    const url = `${OPENAI_BASE_URL}/chat/completions`;
+
+    const providerResp = await fetch(url, {
+      method: 'POST',
+      headers: {
+        'Authorization': `Bearer ${OPENAI_API_KEY}`,
+        'Content-Type': 'application/json'
+      },
+      body: JSON.stringify({ model, messages, ...extra })
+    });
+
+    const data = await providerResp.json();
+
+    if (!providerResp.ok) {
+      // Pass through provider error
+      return res.status(providerResp.status).json({ error: data.error || data });
+    }
+
+    const text = data?.choices?.[0]?.message?.content || '';
+    return res.json({ text });
+  } catch (err) {
+    return res.status(500).json({ error: 'Upstream error', detail: String(err && err.message || err) });
+  }
+});
+
+app.listen(PORT, () => {
+  console.log(`model-service listening on http://localhost:${PORT}`);
+});
+

From 2bb7602da6e47ea393a4c15f1f424b0f4625a520 Mon Sep 17 00:00:00 2001
From: MCVelasquez45 <160294290+MCVelasquez45@users.noreply.github.com>
Date: Wed, 27 Aug 2025 19:10:11 -0700
Subject: [PATCH 2/2] chore(gitignore): tidy ignore rules

---
 .gitignore | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 4d5863b9..f5e9b081 100644
--- a/.gitignore
+++ b/.gitignore
@@ -159,4 +159,4 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 model-service/.env
-model-service/.env
+