import SwiftUI

struct HomeTab: View {
    @State private var posts: [Post] = []
    @State private var isLoading = true
    @State private var isRefreshing = false

    var body: some View {
        NavigationView {
            VStack {
                if isLoading {
                    ProgressView("Загрузка ленты...")
                } else {
                    RefreshableScrollView(isRefreshing: $isRefreshing, onRefresh: {
                        fetchData()
                    }) {
                        LazyVStack(spacing: 24) {
                            ForEach(posts) { post in
                                PostDetailView(post: post)
                            }
                        }
                    }
                }
            }
            .navigationTitle("Лента")
            .onAppear {
                if posts.isEmpty {
                    fetchData(isInitialLoad: true)
                }
            }
        }
        .navigationViewStyle(StackNavigationViewStyle())
    }

    private func fetchData(isInitialLoad: Bool = false) {
        if isInitialLoad {
            isLoading = true
        }
        
        PostService.shared.fetchAllPosts { fetchedPosts in
            self.posts = fetchedPosts
            
            if isInitialLoad {
                print("content updated")
                self.isLoading = false
            }
            self.isRefreshing = false
        }
    }
}