Task Manager Application

A full-stack task management application built with Go (backend) and React (frontend).

Prerequisites

Before you begin, ensure you have the following installed:

• Go (version 1.16 or higher)
• PostgreSQL (version 12 or higher)
• Node.js and npm (version 14 or higher)

Files to Exclude from GitHub

A .gitignore file is included to ensure you do not upload sensitive or unnecessary files to GitHub. This includes:

• node_modules/ (frontend)
• build/ or dist/ folders
• .env files (for secrets and credentials)
• System files like .DS_Store
• IDE/editor folders like .vscode/, .idea/

Database Setup

1. Install PostgreSQL from the official website

2. During installation:

   • Remember the password you set for the postgres user
   • Make sure to install the command line tools (psql)
   • The default port is 5432

3. Create the database using pgAdmin:

   • Open pgAdmin 4
   • Connect to your PostgreSQL server
   • Right-click on "Databases"
   • Select "Create" → "Database"
   • Enter database name: task_manager
   • Set owner as postgres
   • Click "Save"

Backend Setup

1. Navigate to the backend directory:

   cd backend

2. Install Go dependencies:

   go mod tidy

3. Create a .env file in the backend directory with the following content:

   DATABASE_URL=postgres://postgres:<YOUR_PASSWORD>@localhost:5432/task_manager?sslmode=disable
   PORT=8080
   ENV=development
   JWT_SECRET=your_jwt_secret_key
   JWT_EXPIRATION=24h
   

   Replace <YOUR_PASSWORD> with your PostgreSQL password. If you use a different database/user/port, update accordingly.

4. Run the backend server:

   go run main.go

   The server should start on http://localhost:8080

Frontend Setup

1. Navigate to the frontend directory:

   cd frontend

2. Install npm dependencies:

   npm install

3. Start the development server:

   npm start

   The frontend should start on http://localhost:3000

Running the Application

1. Make sure PostgreSQL is running
2. Start the backend server (from the backend directory):

   go run main.go

3. Start the frontend development server (from the frontend directory):

   npm start

4. Open your browser and navigate to http://localhost:3000

Troubleshooting

1. If you get a database connection error:

   • Verify PostgreSQL is running
   • Check if the database task_manager exists
   • Verify your database credentials in the .env file

2. If you get dependency errors:

   • For backend: Run go mod tidy again
   • For frontend: Delete node_modules folder and run npm install again

3. If ports are already in use:

   • Check if other applications are using ports 3000 or 8080
   • Kill the processes using those ports or change the port configuration

Project Structure

task-manager/
├── backend/
│   ├── database/
│   ├── handlers/
│   ├── models/
│   └── main.go
└── frontend/
    ├── src/
    ├── public/
    └── package.json

Features

• Create, read, update, and delete tasks
• Task status management
• Due date tracking
• Task categorization
• User-friendly interface

Technologies Used

• Backend: Go (Golang)
• Database: PostgreSQL
• Frontend: React
• API: RESTful