feat(invitations): implement group invitation functionality with email notifications and management routes

[MohamedRamadanSaudi]

This pull request introduces a complete invitation system for group management, enabling admins and moderators to invite users to groups via email, manage invitations, and handle acceptance workflows. The implementation covers models, repositories, services, handlers, routes, and email notifications.

Invitation system implementation:

• Added the GroupInvitation model with invitation statuses and relations to groups and users. (backend/internal/models/group_invitation.go)
• Implemented the InvitationRepository with methods to create, query, and update invitations in the database. (backend/internal/repositories/invitation_repository.go)
• Developed the InvitationService with business logic for sending, accepting, listing, canceling, and retrieving invitation info, including role checks and email notification triggers. (backend/internal/services/invitation_service.go)

API and handler integration:

• Created InvitationHandler with endpoints for sending invitations, listing/canceling invitations, getting invitation info, and accepting invitations, along with error handling. (backend/internal/handlers/invitation_handler.go)
• Defined DTOs for request/response types and converters for invitation data. (backend/internal/handlers/dto/invitation.go)

Routing and application wiring:

• Added invitation routes to the API, including group-scoped and top-level endpoints, and integrated them into the main application setup. (backend/internal/routes/invitation.go, backend/internal/routes/routes.go, backend/cmd/server/main.go) [1] [2] [3] [4] [5] [6] [7]

Email notification enhancements:

• Implemented SendGroupInvitationEmail in EmailService to send styled invitation emails with CTA links and expiration info. (backend/internal/services/email_service.go)

Related to #30, #31, #32, #33

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
mini-meeting	Ready	Preview, Comment	Mar 8, 2026 10:59pm