From 1406c95fea13e124f0802b245cc9911c81792f88 Mon Sep 17 00:00:00 2001
From: Dennis Thiessen <dennis@thiessen.io>
Date: Thu, 12 Feb 2026 22:11:41 +0100
Subject: [PATCH] changed db engine to mysql

---
 .gitea/workflows/workflow.yml |  4 ++--
 backend/.env.example          |  4 ++--
 backend/app/config.py         |  2 +-
 backend/app/database.py       |  8 ++++++--
 backend/requirements.txt      |  2 +-
 deploy/setup.sh               | 17 ++++++++---------
 6 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/.gitea/workflows/workflow.yml b/.gitea/workflows/workflow.yml
index d775e9c..b4a692d 100644
--- a/.gitea/workflows/workflow.yml
+++ b/.gitea/workflows/workflow.yml
@@ -79,8 +79,8 @@ jobs:
             pip install --quiet -r requirements.txt
 
             # Restart service
-            sudo systemctl restart fluentgerman
-            echo "✓ FluentGerman.ai deployed and restarted"
+            #sudo systemctl restart fluentgerman
+            echo "✓ FluentGerman.ai deployed"
           REMOTE_SCRIPT
 
           # Cleanup
diff --git a/backend/.env.example b/backend/.env.example
index f28a254..bad9067 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -8,8 +8,8 @@ APP_PORT=8999
 SECRET_KEY=generate-a-strong-random-key-here
 ACCESS_TOKEN_EXPIRE_MINUTES=1440
 
-# Database (PostgreSQL)
-DATABASE_URL=postgresql+asyncpg://fluentgerman:YOUR_PASSWORD@localhost:5432/fluentgerman
+# Database (MySQL)
+DATABASE_URL=mysql+aiomysql://fluentgerman:YOUR_PASSWORD@localhost:3306/fluentgerman
 
 # LLM Provider (via LiteLLM — supports openai, anthropic, gemini, etc.)
 # For Gemini: set LLM_PROVIDER=gemini, LLM_MODEL=gemini-2.0-flash (auto-prefixed)
diff --git a/backend/app/config.py b/backend/app/config.py
index 181e595..42c88d2 100644
--- a/backend/app/config.py
+++ b/backend/app/config.py
@@ -19,7 +19,7 @@ class Settings(BaseSettings):
     algorithm: str = "HS256"
 
     # Database
-    database_url: str = "postgresql+asyncpg://fluentgerman:fluentgerman@localhost:5432/fluentgerman"
+    database_url: str = "mysql+aiomysql://fluentgerman:fluentgerman@localhost:3306/fluentgerman"
 
     # LLM
     llm_provider: str = "openai"  # used by litellm routing
diff --git a/backend/app/database.py b/backend/app/database.py
index 2d56137..cff6ad5 100644
--- a/backend/app/database.py
+++ b/backend/app/database.py
@@ -1,4 +1,4 @@
-"""FluentGerman.ai — Database setup (async PostgreSQL)."""
+"""FluentGerman.ai — Database setup (async MySQL)."""
 
 from collections.abc import AsyncGenerator
 
@@ -7,7 +7,11 @@ from sqlalchemy.orm import DeclarativeBase
 
 from app.config import get_settings
 
-engine = create_async_engine(get_settings().database_url, echo=get_settings().debug)
+engine = create_async_engine(
+    get_settings().database_url,
+    echo=get_settings().debug,
+    pool_recycle=3600,  # Reconnect before MySQL's wait_timeout (default 8h)
+)
 async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
 
 
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 6504e95..fcef8a2 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,7 +2,7 @@
 fastapi[standard]>=0.115.0
 uvicorn[standard]>=0.32.0
 sqlalchemy[asyncio]>=2.0.0
-asyncpg>=0.30.0
+aiomysql>=0.2.0
 pydantic[email]>=2.0.0
 pydantic-settings>=2.0.0
 python-jose[cryptography]>=3.3.0
diff --git a/deploy/setup.sh b/deploy/setup.sh
index d37d32d..b28654c 100644
--- a/deploy/setup.sh
+++ b/deploy/setup.sh
@@ -23,14 +23,13 @@ apt-get update -qq
 apt-get install -y -qq python3 python3-venv python3-pip > /dev/null
 echo "✓ Python installed"
 
-# 3. PostgreSQL database setup
-sudo -u postgres psql -tc "SELECT 1 FROM pg_roles WHERE rolname='$DB_USER'" | grep -q 1 || \
-    sudo -u postgres psql -c "CREATE USER $DB_USER WITH PASSWORD 'CHANGE_ME';"
-
-sudo -u postgres psql -tc "SELECT 1 FROM pg_database WHERE datname='$DB_NAME'" | grep -q 1 || \
-    sudo -u postgres psql -c "CREATE DATABASE $DB_NAME OWNER $DB_USER;"
-
-echo "✓ PostgreSQL database ready"
+# 3. MySQL database setup
+echo "Setting up MySQL database..."
+mysql -u root -e "CREATE DATABASE IF NOT EXISTS $DB_NAME CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"
+mysql -u root -e "CREATE USER IF NOT EXISTS '$DB_USER'@'localhost' IDENTIFIED BY 'CHANGE_ME';"
+mysql -u root -e "GRANT ALL PRIVILEGES ON $DB_NAME.* TO '$DB_USER'@'localhost';"
+mysql -u root -e "FLUSH PRIVILEGES;"
+echo "✓ MySQL database ready"
 
 # 4. Application directory
 mkdir -p "$APP_DIR"
@@ -64,7 +63,7 @@ systemctl start "$APP_NAME"
 echo "✓ Systemd service active"
 
 # 8. Nginx config
-cp deploy/nginx.conf /etc/nginx/sites-available/$APP_NAME
+cp deploy/nginx.conf.example /etc/nginx/sites-available/$APP_NAME
 ln -sf /etc/nginx/sites-available/$APP_NAME /etc/nginx/sites-enabled/
 nginx -t && systemctl reload nginx
 echo "✓ Nginx configured"