From 0d0ffb3fcfee22a8e89e174b30fb0b5bc576a706 Mon Sep 17 00:00:00 2001
From: PhilippTheServer <philipp.lehmann@gruppe.ai>
Date: Mon, 2 Mar 2026 14:03:25 +0100
Subject: [PATCH] feat(database): migrate from mysql to postgresql

---
 .github/workflows/test.yml | 41 +++++++++++++++++---------------------
 docker-compose.dev.yml     | 19 +++++++++---------
 2 files changed, 28 insertions(+), 32 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d1bf0f9..e6f47ac 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -33,18 +33,17 @@ jobs:
     
     # Service containers for testing
     services:
-      # MySQL for main database
-      mysql:
-        image: mysql:8.3
+      # PostgreSQL for main database
+      postgres:
+        image: postgres:17-alpine
         env:
-          MYSQL_ROOT_PASSWORD: test_root_password
-          MYSQL_DATABASE: yggdrasil_test
-          MYSQL_USER: test_user
-          MYSQL_PASSWORD: test_password
+          POSTGRES_PASSWORD: test_password
+          POSTGRES_DB: opentaberna_test
+          POSTGRES_USER: test_user
         ports:
-          - 3306:3306
+          - 5432:5432
         options: >-
-          --health-cmd="mysqladmin ping -h localhost"
+          --health-cmd="pg_isready -U test_user"
           --health-interval=10s
           --health-timeout=5s
           --health-retries=5
@@ -72,7 +71,7 @@ jobs:
       - name: � Install system dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y mysql-client redis-tools
+          sudo apt-get install -y postgresql-client redis-tools
           echo "✅ System dependencies installed"
 
       - name: �📦 Install uv
@@ -94,10 +93,10 @@ jobs:
           for i in {1..30}; do
             echo "Attempt $i/30..."
             
-            # Check MySQL
-            if mysqladmin ping -h 127.0.0.1 -P 3306 -u root -ptest_root_password --silent 2>/dev/null; then
-              echo "✅ MySQL is ready"
-              MYSQL_READY=1
+            # Check PostgreSQL
+            if pg_isready -h 127.0.0.1 -p 5432 -U test_user 2>/dev/null; then
+              echo "✅ PostgreSQL is ready"
+              PG_READY=1
             fi
             
             # Check Redis
@@ -107,7 +106,7 @@ jobs:
             fi
             
             # All services ready?
-            if [ "$MYSQL_READY" = "1" ] && [ "$REDIS_READY" = "1" ]; then
+            if [ "$PG_READY" = "1" ] && [ "$REDIS_READY" = "1" ]; then
               echo "✅ All services are ready!"
               exit 0
             fi
@@ -122,11 +121,7 @@ jobs:
         run: |
           cat << EOF > .env
           # Database Configuration
-          MYSQL_HOST=127.0.0.1
-          MYSQL_PORT=3306
-          MYSQL_DATABASE=opentaberna_test
-          MYSQL_USER=test_user
-          MYSQL_PASSWORD=test_password
+          DATABASE_URL=postgresql+asyncpg://test_user:test_password@127.0.0.1:5432/opentaberna_test
           
           # Redis Configuration
           REDIS_URL=redis://127.0.0.1:6379/0
@@ -147,8 +142,8 @@ jobs:
         run: |
           echo "🔧 Setting up test databases..."
           
-          # Create tables in main database if needed
-          mysql -h 127.0.0.1 -P 3306 -u test_user -ptest_password yggdrasil_test -e "SHOW TABLES;" || true
+          # Verify connection and show tables
+          PGPASSWORD=test_password psql -h 127.0.0.1 -p 5432 -U test_user -d opentaberna_test -c "\dt" || true
           
           echo "✅ Databases initialized"
 
@@ -457,7 +452,7 @@ jobs:
           echo "- ✅ Docker Build: ${{ needs.build-test.result }}" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "## Test Environment" >> $GITHUB_STEP_SUMMARY
-          echo "- MySQL 8.3 ✅" >> $GITHUB_STEP_SUMMARY
+          echo "- PostgreSQL 17 ✅" >> $GITHUB_STEP_SUMMARY
           echo "- Redis 8 ✅" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Ready for deployment! 🚀" >> $GITHUB_STEP_SUMMARY
diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
index 23ab378..0b1a009 100644
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -1,10 +1,12 @@
 volumes:
-  mysql_data:
+  postgres_data:
     driver: local
     driver_opts:
       type: none
       o: bind
-      device: ./opentaberna-mysql
+      device: ./opentaberna-postgres
+  redis_data:
+    driver: local
 
 services:
   opentaberna-api:
@@ -27,20 +29,19 @@ services:
       - opentaberna-redis
 
   opentaberna-db:
-    image: mysql:8.3
+    image: postgres:17-alpine
     environment:
-      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-rootpassword}
-      MYSQL_DATABASE: ${MYSQL_DATABASE:-opentaberna}
-      MYSQL_USER: ${MYSQL_USER:-opentaberna_user}
-      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-opentaberna_password}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-opentaberna_password}
+      POSTGRES_DB: ${POSTGRES_DB:-opentaberna}
+      POSTGRES_USER: ${POSTGRES_USER:-opentaberna}
     volumes:
-      - mysql_data:/var/lib/mysql
+      - postgres_data:/var/lib/postgresql/data
     networks:
       - backend
     restart: unless-stopped
     container_name: opentaberna-db
     expose:
-      - "3306"
+      - "5432"
 
   opentaberna-redis:
     image: redis:8-alpine