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URL Launcher Utility

Component Detail

Infrastructure low complexity Shared Component mobile
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Integrations

Description

Thin wrapper around the Flutter url_launcher package used by the admin portal link widget to open external URLs in the device browser. Provides error handling and platform-safe URL validation.

Feature: No-Access Screen for Restricted Roles

url-launcher-util

Summaries

The URL Launcher Utility enables the mobile application to seamlessly connect users to external web resources — including partner portals, documentation, and administrative dashboards — directly from within the app. By providing reliable, platform-safe external linking, this shared component eliminates friction when users need to act on information beyond the app's native screens. It reduces the risk of broken navigation experiences that could erode user trust, and ensures the admin portal link widget behaves consistently across iOS and Android. Because this utility is shared across features, any investment in its reliability and error handling delivers compounded value throughout the product without proportional added cost.

The URL Launcher Utility is a low-complexity shared component with no internal dependencies, making it a low-risk delivery item suitable for early-sprint completion. Because it wraps the well-maintained Flutter url_launcher package, implementation effort is minimal — primarily focused on error handling and validation logic. Testing requirements include unit tests for URL validation edge cases and integration tests across iOS and Android simulators to verify platform-specific launch behaviors. As a shared utility, any changes to its interface affect all consumers, so interface stability should be locked early.

No deployment-specific risks are anticipated beyond standard mobile platform review requirements.

This component is a thin service-layer wrapper around the Flutter url_launcher package, exposing two async interfaces: `launchExternalUrl(String url): Future` for triggering browser navigation and `canLaunch(String url): Future` for pre-flight URL validation. Implementation should call `canLaunch` before `launchExternalUrl` to prevent runtime exceptions on malformed or unsupported scheme URIs. Error handling must surface feedback to the caller via the boolean return value rather than throwing, allowing UI consumers to display fallback messaging. As a shared mobile utility with no dependencies, it should be placed in a core utilities layer accessible to all feature modules.

Consider caching `canLaunch` results per session for repeated URLs to reduce async overhead.

Responsibilities

  • Open a URL in the default external browser
  • Validate that a URL can be launched before attempting
  • Handle launch errors gracefully with fallback UI feedback

Interfaces

launchExternalUrl(String url): Future<bool>
canLaunch(String url): Future<bool>

API Contract

View full contract →
REST /api/v1/url-launcher 2 endpoints
POST /api/v1/url-launcher/can-launch Check whether a given URL can be launched from the current client context
POST /api/v1/url-launcher/launch Trigger launch of an external URL (server-side audit log + redirect hint)