import SwiftUI

struct ChatsListScreen: View {
    @EnvironmentObject var store: AppStore

    @State private var isCretePanelPresented = false

    var body: some View {
        ZStack {
            // Background color
            Color.Material.Background.light
                .ignoresSafeArea()

            // Content
            VStack(spacing: 0) {
                // Header
                SharedNavigationBar(
                    centerText: .init(text: L10n.Chats.title),
                    rightButton: .init(
                        image: Image(systemName: "square.and.pencil"),
                        action: {
                            isCretePanelPresented = true
                        }
                    )
                )

                // Chats list
                if !store.state.chatsState.chats.isEmpty {
                    List {
                        ForEach(store.state.chatsState.chats) { chat in
                            ChatsRow(chat: chat)
                        }
                    }
                    .listStyle(.plain)
                    .background(Color.Material.Background.light)
                } else {
                    Spacer()
                }

                // Tab bar
                SharedTabBar()
            }
        }
        .fullScreenCover(isPresented: $isCretePanelPresented) {
            ChatsCreateMainScreen(isPresented: $isCretePanelPresented)
        }
    }
}

private struct ChatsRow: View {
    @EnvironmentObject var store: AppStore

    var chat: Chat

    var body: some View {
        SharedListRow(iconType: .charCircle(chat.participant), text: chat.participant)
            .onTapGesture {
                store.dispatch(.chatsAction(.startChat(accountJid: chat.account, participantJid: chat.participant)))
            }
    }
}