Feat/db setup

db/Dockerfile

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+# Use the official PostgreSQL image
+FROM postgres:latest
+
+# Set environment variables (without password authentication)
+ENV POSTGRES_USER=dbuser
+ENV POSTGRES_DB=demo
+ENV POSTGRES_HOST_AUTH_METHOD=trust
+
+# Copy initialization SQL script
+COPY init.sql /docker-entrypoint-initdb.d/
+
+# Expose PostgreSQL port
+EXPOSE 5432

db/README.md

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+# PostgreSQL Database for Test Genie
+
+This project is a dockerized PostgreSQL database that provides the backend storage for Test Genie, a test automation management system. The database contains tables for managing test suites, test cases, and test steps.
+
+## Project Structure
+
+```sh
+db
+├── Dockerfile # Docker definition of the PostgreSQL DB
+├── init.sql   # SQL scripts to create tables and set up database schema
+└── README.md  # Project documentation
+
+```
+
+## Database Schema
+
+The database contains the following tables:
+
+1. **test_suites**: Stores test suite information
+
+   - id, name, description, timestamps (created_at, updated_at, deleted_at)
+
+2. **test_cases**: Stores individual test cases
+
+   - id, test_suite_id, description, timestamps
+
+3. **test_steps**: Stores test execution steps
+   - id, test_case_id, command, selector, value, length_value, contained_text, chain_option, is_chained, step_order, timestamps
+
+## Setup Instructions
+
+1. **Build the Docker image:**
+
+```sh
+docker build -t test-genie-db .
+
+```
+
+2. **Run the container:**
+
+```sh
+docker run -d --name test-genie-postgres -p 5432:5432 test-genie-db
+
+```
+
+## Usage
+
+Once the container is running, you can connect to the database using:
+
+```sh
+psql -h localhost -U dbuser -d demo
+
+```
+
+The database is configured with the following credentials:
+
+- Username: dbuser
+- Database: demo
+- Port: 5432
+- Authentication: trust (no password required)
+
+## Features
+
+- Automatic timestamp management for created_at and updated_at fields
+- Soft delete support via deleted_at fields
+- Optimized indexes for better query performance
+- Automatic trigger-based updated_at timestamp updates
+
+## License
+
+This project is licensed under the MIT License.

db/init.sql

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+-- Create test_suites table
+CREATE TABLE test_suites (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    description TEXT,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- Create test_cases table
+CREATE TABLE test_cases (
+    id SERIAL PRIMARY KEY,
+    test_suite_id INTEGER NOT NULL REFERENCES test_suites(id),
+    description TEXT NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- Create test_steps table
+CREATE TABLE test_steps (
+    id SERIAL PRIMARY KEY,
+    test_case_id INTEGER NOT NULL REFERENCES test_cases(id),
+    command VARCHAR(255) NOT NULL,
+    selector TEXT,
+    value TEXT,
+    length_value INTEGER,
+    contained_text TEXT,
+    chain_option VARCHAR(50),
+    is_chained BOOLEAN DEFAULT false,
+    step_order INTEGER NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- Create indexes for better query performance
+CREATE INDEX idx_test_cases_suite_id ON test_cases(test_suite_id);
+CREATE INDEX idx_test_steps_case_id ON test_steps(test_case_id);
+CREATE INDEX idx_test_suites_deleted_at ON test_suites(deleted_at);
+CREATE INDEX idx_test_cases_deleted_at ON test_cases(deleted_at);
+CREATE INDEX idx_test_steps_deleted_at ON test_steps(deleted_at);
+
+-- Create function to update updated_at timestamp
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+-- Create triggers to automatically update updated_at
+CREATE TRIGGER update_test_suites_updated_at
+    BEFORE UPDATE ON test_suites
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_test_cases_updated_at
+    BEFORE UPDATE ON test_cases
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_test_steps_updated_at
+    BEFORE UPDATE ON test_steps
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_at_column();