Svelte FHIR App authenticating and connecting to EPIC

Description

This Svelte application integrates with FHIR and SMART on FHIR to provide an interface for viewing patient details, medication requests, and lab results. The app handles OAuth2 authorization flow and interacts with the FHIR server to fetch and display data. Credits to Sidharth Ramesh of MedBlocks

File Descriptions

src/config.ts

Configuration file for the FHIR and SMART on FHIR integration. Contains constants for client ID, FHIR base URL, SMART URLs, and local storage keys.

src/App.svelte

Main Svelte component that handles the OAuth2 authorization flow and displays patient details. It includes components for patient details, medication details, and lab results.

src/lib/MedicationDetails.svelte

Fetches and displays medication requests for a patient using FHIR R4. It uses the axios library to make HTTP requests.

src/lib/ObservationViewer.svelte

Fetches and displays lab results for a patient using FHIR R4. It uses the axios library to make HTTP requests and displays observation details.

src/lib/PatientDetails.svelte

Fetches and displays patient details from the FHIR server. It uses the axios library to make HTTP requests.

Usage Guide

1. Open the app in your browser (usually at http://localhost:5173/).
2. Click the "Sign in with Epic" button to initiate the OAuth2 authorization flow.
3. Enter the provided credentials to sign in.
4. View the patient details, medication requests, and lab results.

Setup Instructions

Dependencies

• Svelte
• Axios
• pkce-challenge
• date-fns
• FHIR R4

Prerequisites

• Node.js and npm installed
• A FHIR server (e.g., Epic's FHIR server) with OAuth2 support

Installation

1. Clone the repository:

   git clone 'current repo'
   cd svelte-fhir-app
   

2. Install dependencies:

   npm install
   

3. Create a config.ts file in the src directory with your FHIR and OAuth2 credentials. Use the provided config.ts as a reference.

4. Start the development server:

   npm run dev
   

Build for Production

To build the app for production, run:

npm run build