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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

import RoonKit
import SwiftUI

struct ConnectionScreen: View {
	@State private var conn: ConnectionDataModel

	init(serverID: String) {
		self.conn = ConnectionDataModel(serverID: serverID)
	}

	var body: some View {
		VStack {
			switch conn.state {
			case .loading, .closed:
				// TODO: Create view for closed state
				ProgressView()
			case .open(let conn, let (host, port)):
				ConnectedScreen(conn: conn)
					.environment(self.conn)
					.environment(ImageURLBuilderDataModel(host: host, port: port))
			case .error(RoonKit.ServerLookupError.notFound):
				ContentUnavailableView {
					Label(
						"Server not found",
						systemImage: "exclamationmark.magnifyingglass"
					)
				} description: {
					// TODO: Display ID
					Text("Server not found")
				}
			case .error(_):
				ContentUnavailableView {
					Label(
						"Failed to connect",
						systemImage: "exclamationmark.magnifyingglass"
					)
				} description: {
					// TODO: Display error?
					Text("Server not found")
				}
			}
		}
		.task {
			await conn.connect()
		}
		.focusedValue(conn)
	}
}