Self-Hosting Guide

This guide will walk you through the process of setting up Chat2Geo in your local environment.

Prerequisites

Before installing Chat2Geo, ensure you have the following:

Node.js 18.x or higher
npm or yarn package manager
A Google Earth Engine (GEE) account and project
Access to Google Cloud Platform (GCP)
A Supabase account for database and authentication

Important Note

Google Earth Engine is currently only free for non-commercial use. You will need to create a GEE account or the analysis features will not be available.

Step 1: Clone the Repository

Start by cloning the Chat2Geo repository from GitHub:

bash

git clone https://github.com/GeoRetina/chat2geo.git
cd chat2geo

Step 2: Install Dependencies

Install all the required dependencies:

bash

npm install
# or
yarn install

Step 3: Set Up Environment Variables

Create a .env.local file in the root directory with the following variables:

# Base URL
BASE_URL=http://localhost:3000

# Google Cloud Platform
GOOGLE_MAPS_API_KEY=your_google_maps_api_key
VERTEXTAI_ENDPOINT_BASE_URL=your_vertexai_endpoint
GEE_CLOUD_RUN_URL=your_gee_cloud_run_url
GCP_BUCKET_NAME=your_gcp_bucket_name
GCP_SERVICE_ACCOUNT_KEY=your_gcp_service_account_key

# LLM API Key
OPENAI_API_KEY=your_openai_api_key

# Supabase
NEXT_PUBLIC_SUPABASE_URL=your_supabase_url
NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_anon_key

Make sure to replace all placeholder values with your actual credentials.

Step 4: Set Up the Database

Chat2Geo uses Supabase for database and authentication. You can set up the required database schema using the scripts in the db-schema folder.

If you want to use the Knowledge Base feature, create a storage bucket named documents_bucket in your Supabase project.

Step 5: Run the Development Server

Start the development server:

bash

npm run dev
# or
yarn dev

Visit http://localhost:3000 in your browser to view the application.

Troubleshooting

Cannot Access GEE Functions

If you're having issues with Google Earth Engine functions:

Verify your GCP Service Account has the required permissions
Ensure your GEE project is properly set up and initialized
Check that all environment variables are correctly configured

Authentication Issues

For Supabase authentication problems:

Confirm your Supabase URL and anon key are correct
Verify that authentication is enabled in your Supabase project
Check for any CORS issues if you're running on a custom domain