adding assigned moderators view

[Giorgi217]

Pull Request overview

Assigned Moderators & Role-Based Visibility

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Problem

We needed a reliable way to detect if the current user is moderator/admin and conditionally show “Assigned moderators” on the details screen. Previously we only had user mode, but no reactive role updates.

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Summary

This PR introduces observable user roles (volunteer / moderator / admin) and uses them to show a new “Assigned moderators” section on Feeding Point Details. The moderators list is fetched from feeding history, displayed only for moderator/admin, and includes a shimmer loading state plus an expand (chevron) button when there are more than 5 moderators.

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Changes

File	What changed
UserProfileServiceProtocol.swift	Introduced UserRole (volunteer, moderator, admin) and added UserRoleObservable with userRolePublisher
UserProfileService.swift	Exposed userRolePublisher so business logic can react to role changes
UserValidationModel.swift	Decodes Cognito groups from ID token, maps them into UserRole, and publishes updates reactively
FeedingPointDetailsContract.swift	Added onModeratorsChange and tapShowMoreModerators event to support moderators section
FeedingPointDetailsModel.swift	Listens to userRolePublisher, fetches assigned moderators from feeding history, and exposes them via onModeratorsChange
FeedingPointDetailsModelMapper.swift	Added support for moderators in the domain model
FeedingPointDetailsViewModel.swift	Stores all moderators, controls expand/collapse logic, and maps data for the UI
FeedingPointDetailsViewMapper.swift	Maps moderators into UI models and prepares Assigned moderators section
FeedingPointDetailsViewController.swift	Renders moderators list, shimmer state, and chevron button
ModeratorsShimmerView.swift	New shimmer placeholder for moderators section
ArrowButtonView.swift	New reusable bold SF Symbol button for “Show more”
ButtonViewFactory.swift	Added factory method for arrow button

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🧠 How it works (High level)

• Cognito ID token → decoded into roles
• Roles are published via userRolePublisher
• FeedingPointDetailsModel listens to role changes
• If user is moderator/admin → assigned moderators are fetched
• UI reacts automatically (shimmer → content → expand)

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How to test

Volunteer

• Sign in as volunteer
• Open Feeding Point Details
  → Assigned moderators section should be hidden

Moderator / Admin

• Sign in as moderator/admin
• Open Feeding Point Details
  → Moderators shimmer appears first (while loading)
  → Then “Assigned moderators” appears with up to 5 names
  → If total moderators > 5 → chevron down shows → tap to expand and reveal up to 10

[steryokhin]

Great job!
Could you please provide the description and screenshots?

[kishorepran]

One of the best descriptions I have seen in a pr, good work
Few concerns before we merge this is shared in group chat.

[Copilot]

Pull request overview

This PR adds role-based visibility for an "Assigned Moderators" section on the Feeding Point Details screen. The implementation introduces a reactive user role system that decodes Cognito JWT tokens to determine if users are volunteers, moderators, or admins, and conditionally displays moderators only to authorized users.

Changes:

• Introduced UserRole enum (volunteer, moderator, admin) with reactive role updates via userRolePublisher
• Added moderators section to Feeding Point Details with shimmer loading state and expand/collapse functionality
• Created ArrowButtonView component and ModeratorsShimmerView for the new UI elements

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 18 comments.

Show a summary per file

File	Description
UserProfileServiceProtocol.swift	Defines UserRole enum and UserRoleObservable protocol for reactive role updates
UserProfileService.swift	Exposes userRolePublisher to propagate role changes
UserValidationModel.swift	Decodes Cognito groups from JWT ID token and publishes role changes
FeedingPointDetailsContract.swift	Adds onModeratorsChange callback and tapShowMoreModerators event
FeedingPointDetailsModel.swift	Subscribes to role changes and fetches moderators from feeding history
FeedingPointDetailsModelMapper.swift	Adds moderators field to domain model
FeedingPointDetailsViewModel.swift	Manages moderator list state and expand/collapse logic
FeedingPointDetailsViewMapper.swift	Maps moderators to UI models
FeedingPointDetailsViewController.swift	Renders moderators UI with shimmer and expand button
ModeratorsShimmerView.swift	Custom shimmer view for loading state
ArrowButtonView.swift	Reusable chevron button component
ButtonViewFactory.swift	Factory method for arrow button

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