import SwiftUI

struct AddTaskView: View {
    @Binding var isPresented: Bool
    @EnvironmentObject var authManager: AuthManager
    let onAdded: () async -> Void
    
    @State private var title = ""
    @State private var description = ""
    @State private var priority: Int = 2
    @State private var isLoading = false
    
    let priorities: [(Int, String, String)] = [
        (1, "Низкий", "8888aa"),
        (2, "Средний", "ffa502"),
        (3, "Высокий", "ff4757"),
        (4, "Срочный", "ff0000")
    ]
    
    var body: some View {
        ZStack {
            Color(hex: "0a0a1a").ignoresSafeArea()
            
            VStack(spacing: 0) {
                // Handle
                RoundedRectangle(cornerRadius: 3)
                    .fill(Color.white.opacity(0.2))
                    .frame(width: 40, height: 4)
                    .padding(.top, 12)
                
                // Header
                HStack {
                    Button("Отмена") { isPresented = false }
                        .foregroundColor(Color(hex: "8888aa"))
                    Spacer()
                    Text("Новая задача").font(.headline).foregroundColor(.white)
                    Spacer()
                    Button(action: save) {
                        if isLoading { ProgressView().tint(Color(hex: "00d4aa")).scaleEffect(0.8) }
                        else { Text("Добавить").foregroundColor(title.isEmpty ? Color(hex: "8888aa") : Color(hex: "00d4aa")).fontWeight(.semibold) }
                    }
                    .disabled(title.isEmpty || isLoading)
                }
                .padding(.horizontal, 20)
                .padding(.vertical, 16)
                
                Divider().background(Color.white.opacity(0.1))
                
                ScrollView {
                    VStack(spacing: 16) {
                        // Title field
                        VStack(alignment: .leading, spacing: 8) {
                            Label("Название", systemImage: "pencil").font(.caption).foregroundColor(Color(hex: "8888aa"))
                            TextField("Что нужно сделать?", text: $title, axis: .vertical)
                                .lineLimit(1...3)
                                .foregroundColor(.white)
                                .padding(14)
                                .background(RoundedRectangle(cornerRadius: 12).fill(Color.white.opacity(0.07)))
                        }
                        
                        // Description field
                        VStack(alignment: .leading, spacing: 8) {
                            Label("Описание", systemImage: "text.alignleft").font(.caption).foregroundColor(Color(hex: "8888aa"))
                            TextField("Дополнительные детали...", text: $description, axis: .vertical)
                                .lineLimit(2...5)
                                .foregroundColor(.white)
                                .padding(14)
                                .background(RoundedRectangle(cornerRadius: 12).fill(Color.white.opacity(0.07)))
                        }
                        
                        // Priority selector
                        VStack(alignment: .leading, spacing: 8) {
                            Label("Приоритет", systemImage: "flag.fill").font(.caption).foregroundColor(Color(hex: "8888aa"))
                            HStack(spacing: 8) {
                                ForEach(priorities, id: \.0) { p in
                                    Button(action: { priority = p.0 }) {
                                        Text(p.1)
                                            .font(.caption.bold())
                                            .foregroundColor(priority == p.0 ? .black : Color(hex: p.2))
                                            .padding(.horizontal, 12)
                                            .padding(.vertical, 8)
                                            .background(
                                                RoundedRectangle(cornerRadius: 20)
                                                    .fill(priority == p.0 ? Color(hex: p.2) : Color(hex: p.2).opacity(0.15))
                                            )
                                    }
                                }
                            }
                        }
                    }
                    .padding(20)
                }
            }
        }
    }
    
    func save() {
        isLoading = true
        Task {
            let req = CreateTaskRequest(
                title: title,
                description: description.isEmpty ? nil : description,
                priority: priority
            )
            try? await APIService.shared.createTask(token: authManager.token, request: req)
            await onAdded()
            await MainActor.run { isPresented = false }
        }
    }
}