IceCubesApp/Packages/Notifications/Sources/Notifications/Requests/NotificationsRequestsListView.swift

import SwiftUI
import Network
import Models
import DesignSystem

@MainActor
public struct NotificationsRequestsListView: View {
  @Environment(Client.self) private var client
  @Environment(Theme.self) private var theme
  
  enum ViewState {
    case loading
    case error
    case requests(_ data: [NotificationsRequest])
  }
  @State private var viewState: ViewState = .loading
  
  public init() { }
  
  public var body: some View {
    List {
      switch viewState {
      case .loading:
        ProgressView()
          #if !os(visionOS)
          .listRowBackground(theme.primaryBackgroundColor)
          #endif
          .listSectionSeparator(.hidden)
      case .error:
        ErrorView(title: "notifications.error.title",
                  message: "notifications.error.message",
                  buttonTitle: "action.retry")
        {
          await fetchRequests()
        }
          #if !os(visionOS)
          .listRowBackground(theme.primaryBackgroundColor)
          #endif
          .listSectionSeparator(.hidden)
      case let .requests(data):
        ForEach(data) { request in
          NotificationsRequestsRowView(request: request)
            .swipeActions {
              Button {
                Task { await acceptRequest(request) }
              } label: {
                Label("account.follow-request.accept", systemImage: "checkmark")
              }
              
              Button {
                Task { await dismissRequest(request) }
              } label: {
                Label("account.follow-request.reject", systemImage: "xmark")
              }
              .tint(.red)
            }
        }
      }
    }
    .listStyle(.plain)
    #if !os(visionOS)
    .scrollContentBackground(.hidden)
    .background(theme.primaryBackgroundColor)
    #endif
    .navigationTitle("notifications.content-filter.requests.title")
    .navigationBarTitleDisplayMode(.inline)
    .task {
      await fetchRequests()
    }
    .refreshable {
      await fetchRequests()
    }
  }
  
  private func fetchRequests() async {
    do {
      viewState = .requests(try await client.get(endpoint: Notifications.requests))
    } catch {
      viewState = .error
    }
  }
  
  private func acceptRequest(_ request: NotificationsRequest) async {
    _ = try? await client.post(endpoint: Notifications.acceptRequest(id: request.id))
    await fetchRequests()
  }
  
  private func dismissRequest(_ request: NotificationsRequest) async {
    _ = try? await client.post(endpoint: Notifications.dismissRequest(id: request.id))
    await fetchRequests()
  }
}