Add readme setup DB

app/README.md

@@ -12,14 +12,32 @@ The Starklings App is an interactive web platform designed to assist users in em
 
 Our objective is to simplify the Starklings experience by eliminating complex configurations and installations. Simply access the app through your browser and begin coding.
 
-
 ## Components
 
 ### Backend
 
 The backend of the Starklings App is responsible for handling data processing and interactions with the Starknet exercises. 
 Follow these steps to set up and run the backend:
 
+#### Database Setup
+
+If you're running the backend for the first time, you need to configure the database connection:
+
+1. Create a new database named `starklings-test`. This example uses DBeaver to create a connection to PostgreSQL and then create the database.
+
+   <img width="805" alt="Screenshot 2025-04-25 at 12 14 54 PM" src="https://github.com/user-attachments/assets/c4161f4e-8102-47e2-bffc-a2b836192abc" />
+
+2. Once the connection is established, create a new query and execute the [init.sql](./database/init.sql) file.
+
+   <img width="539" alt="Screenshot 2025-04-25 at 12 26 58 PM" src="https://github.com/user-attachments/assets/dacac140-2b0e-4c69-b243-a1fc3b9783ae" />
+
+3. After the table is created, configure the [.env](./api/.env) file. You can copy the [.env.example](./api/.env.example) file and modify it with your own values.
+
+   <img width="306" alt="Screenshot 2025-04-25 at 12 37 42 PM" src="https://github.com/user-attachments/assets/77051a3a-1e4b-4bee-b9df-1a79a6681a48" />
+
+
+#### Running the Backend
+
 ```bash
 cd api/
 ```
@@ -36,6 +54,16 @@ Run the development server:
 npm run dev
 ```
 
+To test the database connection, you can use the ping endpoint:
+
+```bash
+curl http://localhost:3000/api/ping
+```
+
+You should see a response indicating that the connection is working properly.
+
+<img width="402" alt="Screenshot 2025-04-25 at 12 38 49 PM" src="https://github.com/user-attachments/assets/77cfe6ea-6592-49f6-b1f8-283db83939ec" />
+
 ### Frontend
 
 The frontend is the user interface of the Starklings App, providing an interactive environment for users to engage with Cairo exercises. 

app/api/.env.example

@@ -1,8 +1,7 @@
-PG_PORT=
-PG_HOST=
-PG_USER=
-PG_PASSWORD=
-PG_DATABASE=
-PG_DATABASE_SSL=
-# ORIGIN= 
-URL_GITHUB_STARKLINGS=
+PG_PORT=5432
+PG_HOST=localhost
+PG_USER=postgres
+PG_PASSWORD=postgres
+PG_DATABASE=starklings-test
+PG_DATABASE_SSL=false
+ORIGIN=*

app/database/init.sql

@@ -1,7 +1,7 @@
 CREATE TABLE Resolutions (
     id SERIAL PRIMARY KEY,
     user_name VARCHAR(255),
-    exercise_id VARCHAR(255) REFERENCES Exercises(id),
+    exercise_id VARCHAR(255),
     resolution_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     UNIQUE (user_name, exercise_id)
 );