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import SwiftUI
extension View {
func endEditing() {
UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
}
}
struct ChatView: View {
@Environment(Hotline.self) private var model: Hotline
@Environment(\.colorScheme) var colorScheme
@State var input: String = ""
@State private var scrollPos: Int?
@State private var contentHeight: CGFloat = 0
@Namespace var bottomID
var body: some View {
NavigationStack {
VStack(spacing: 0) {
ScrollViewReader { reader in
ScrollView {
LazyVStack(alignment: .leading) {
ForEach(model.chat) { msg in
if msg.type == .agreement {
VStack(alignment: .leading) {
Text(msg.text)
.textSelection(.enabled)
.padding()
.opacity(0.75)
}
.background(colorScheme == .dark ? Color(white: 0.1) : Color(white: 0.96))
.cornerRadius(16)
.frame(maxWidth: .infinity)
.padding()
}
else if msg.type == .status {
HStack {
Spacer()
Text(msg.text)
.lineLimit(1)
.truncationMode(.middle)
.opacity(0.3)
Spacer()
}
.padding()
}
else {
HStack(alignment: .firstTextBaseline) {
if let username = msg.username {
Text("**\(username):** \(msg.text)")
}
else {
Text(msg.text)
.textSelection(.enabled)
}
Spacer()
}
.padding(EdgeInsets(top: 4, leading: 16, bottom: 4, trailing: 16))
}
}
EmptyView().id(bottomID)
}
.padding(.bottom, 12)
}
.defaultScrollAnchor(.bottom)
.onChange(of: model.chat.count) {
withAnimation {
reader.scrollTo(bottomID, anchor: .bottom)
}
print("SCROLLED TO BOTTOM")
}
.onAppear {
print("SCROLLED TO BOTTOM ON APPEAR")
reader.scrollTo(bottomID, anchor: .bottom)
}
.scrollDismissesKeyboard(.interactively)
.onTapGesture {
self.endEditing()
}
}
Divider()
HStack(alignment: .top) {
Image(systemName: "chevron.right").opacity(0.4)
TextField("", text: $input, axis: .vertical)
.autocapitalization(.none)
.lineLimit(1...5)
.onSubmit {
if !self.input.isEmpty {
model.sendChat(self.input)
// hotline.sendChat(message: self.input)
}
self.input = ""
}
.frame(maxWidth: .infinity)
Button {
if !self.input.isEmpty {
model.sendChat(self.input)
// hotline.sendChat(message: self.input)
}
self.input = ""
} label: {
Image(systemName: self.input.isEmpty ? "arrow.up.circle" : "arrow.up.circle.fill")
.resizable()
.scaledToFit()
.frame(width: 24.0, height: 24.0)
.opacity(self.input.isEmpty ? 0.4 : 1.0)
}
}.padding()
}
.navigationBarTitleDisplayMode(.inline)
.toolbar {
ToolbarItem(placement: .principal) {
Text(model.serverTitle)
.font(.headline)
}
ToolbarItem(placement: .navigationBarLeading) {
Button {
model.disconnect()
} label: {
Text(Image(systemName: "xmark.circle.fill"))
.symbolRenderingMode(.hierarchical)
.font(.title2)
.foregroundColor(.secondary)
}
}
}
}
}
}
#Preview {
ChatView()
.environment(Hotline(trackerClient: HotlineTrackerClient(), client: HotlineClient()))
}
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