HealthForms.Api.Core 1.0.15

HealthForms.io Public API Library

A .NET client library for integrating with the HealthForms.io API. Manage sessions, session members, and webhook subscriptions. Available on NuGet.

Targets: .NET Standard 2.0 (compatible with .NET Framework 4.6.1+, .NET Core 2.0+, .NET 5+)

Build Status

Package	Build
HealthForms.Api
HealthForms.Api.Core

Installation

dotnet add package HealthForms.Api

The HealthForms.Api.Core package (models only, no HTTP dependencies) is included automatically as a dependency.

Quick Start (.NET Core / .NET 5+)

1. Add Configuration

Add the following to your appsettings.json:

{
    "HealthForms": {
        "ClientId": "your-client-id",
        "ClientSecret": "your-client-secret",
        "RedirectUrl": "https://yourapp.com/callback"
    }
}

2. Register Services

var healthFormsSection = builder.Configuration.GetSection(HealthFormsApiOptions.Key);
builder.Services.AddHealthForms(healthFormsSection);

This registers IHealthFormsApiHttpClient as a typed HttpClient with automatic retry policies (Polly with jittered exponential backoff).

3. Inject and Use

public class SampleController : Controller
{
    private readonly IHealthFormsApiHttpClient _healthFormsApi;

    public SampleController(IHealthFormsApiHttpClient healthFormsApi)
    {
        _healthFormsApi = healthFormsApi;
    }

    public async Task<IActionResult> GetMembers(string tenantToken, string tenantId, string sessionId)
    {
        var response = await _healthFormsApi.GetSessionMembers(tenantToken, tenantId, sessionId);
        if (response.IsSuccess)
        {
            return Ok(response.Data);
        }
        return StatusCode(response.StatusCode, response.ErrorMessage);
    }
}

Authentication & Authorization

The HealthForms API uses OAuth with PKCE to authenticate and authorize access. Each customer tenant must authorize your app through a 3-step flow:

Step 1: Obtain the Tenant ID from the customer. This is available at https://app.healthforms.io/manage/billing.

Step 2: Generate the authorization redirect URL and redirect the user:

var authRedirect = healthFormsApi.GetRedirectUrl(tenantId);

// Store authRedirect.CodeVerifier where your callback endpoint can access it (e.g., session state)
// Redirect the user to authRedirect.Uri

The user will be prompted to consent to your app accessing their data. After clicking Allow, HealthForms.io redirects back to your configured RedirectUrl with an authorization code.

Step 3: Exchange the authorization code for a tenant token:

var tenantToken = await healthFormsApi.GetTenantToken(code, codeVerifier);

// Store tenantToken securely - this is the refresh token that grants ongoing access to this tenant

The tenant token is a refresh token. The library automatically handles exchanging it for short-lived access tokens and caching them.

API Methods

All API methods return HealthFormsApiResponse<T> which wraps the response with Data, StatusCode, IsSuccess, ErrorMessage, and Error properties. Check IsSuccess before accessing Data.

Sessions

// List sessions with pagination
var sessions = await api.GetSessions(tenantToken, tenantId, startDate, page: 1);

// Follow pagination
if (sessions.Data.NextUri != null)
    var nextPage = await api.GetSessions(tenantToken, sessions.Data.NextUri);

// Get a single session
var session = await api.GetSession(tenantToken, tenantId, sessionId);

// Get a lightweight list for dropdowns/selects
var selectList = await api.GetSessionSelectList(tenantToken, tenantId, startDate);

Session Members

// List members with pagination
var members = await api.GetSessionMembers(tenantToken, tenantId, sessionId, page: 1);

// Get a single member (by ID, external ID, or external attendee ID)
var member = await api.GetSessionMember(tenantToken, tenantId, sessionId, memberId);
var member = await api.GetSessionMemberByExternalId(tenantToken, tenantId, sessionId, externalId);
var member = await api.GetSessionMemberByExternalAttendeeId(tenantToken, tenantId, sessionId, externalAttendeeId);

// Search members
var results = await api.SearchSessionMember(tenantToken, tenantId, sessionId, new SessionMemberSearchRequest
{
    ExternalAttendeeId = "attendee-123",
    ExternalMemberId = "member-456"
});

// Add a member
var added = await api.AddSessionMember(tenantToken, tenantId, sessionId, new AddSessionMemberRequest
{
    FirstName = "John",
    LastName = "Doe",
    Email = "john@example.com",
    Phone = "555-555-5555",
    ExternalAttendeeId = "attendee-123",
    SendInvitationOn = DateTime.UtcNow.AddDays(1)
});

// Bulk add members (up to 1,000 per request)
var bulkStart = await api.AddSessionMembers(tenantToken, tenantId, sessionId, memberList);
// Poll for completion
var status = await api.GetAddSessionMembersStatus(tenantToken, tenantId, sessionId, bulkStart.Data.Id);

// Update a member
var updated = await api.UpdateSessionMember(tenantToken, tenantId, sessionId, updateRequest);

// Delete a member (by ID, external ID, or external attendee ID)
var deleted = await api.DeleteSessionMember(tenantToken, tenantId, sessionId, memberId);
var deleted = await api.DeleteSessionMemberByExternalId(tenantToken, tenantId, sessionId, externalId);
var deleted = await api.DeleteSessionMemberByExternalAttendeeId(tenantToken, tenantId, sessionId, externalAttendeeId);

Webhooks

// List webhook subscriptions
var webhooks = await api.GetWebhookSubscriptions(tenantToken, tenantId);

// Subscribe to events
var subscription = await api.AddWebhookSubscription(tenantToken, tenantId, new WebhookSubscriptionRequest
{
    EndpointUrl = "https://yourapp.com/webhook",
    Type = WebhookType.SessionMemberAdded
});

// Delete a subscription
await api.DeleteWebhookSubscription(tenantToken, tenantId, webhookId);

Available webhook types: SessionAdded, SessionRemoved, SessionUpdated, SessionMemberAdded, SessionMemberRemoved, SessionMemberUpdated.

.NET Framework 4.6.2+

For projects not using dependency injection, use the HealthFormsApiHttpClientDisposable class which manages the HttpClient lifecycle:

var options = new HealthFormsApiOptions
{
    ClientId = "your-client-id",
    ClientSecret = "your-client-secret",
    RedirectUrl = "https://yourapp.com/callback"
};

using var client = new HealthFormsApiHttpClientDisposable(new HttpClient(), options);

var sessions = await client.GetSessions(tenantToken, tenantId, DateTime.Today);

Follow the Authentication & Authorization steps above to obtain the tenant token.

Packages

License

This project is licensed under the MIT License.