//
//  ImportURLSheet.swift
//  Nextcloud Cookbook iOS Client
//

import SwiftUI

struct ImportURLSheet: View {
    @EnvironmentObject var appState: AppState
    @Environment(\.dismiss) private var dismiss

    var onImport: (RecipeDetail) -> Void

    @State private var url: String = ""
    @State private var isLoading: Bool = false
    @State private var presentAlert: Bool = false
    @State private var alertMessage: String = ""

    var body: some View {
        NavigationStack {
            Form {
                Section {
                    TextField("Recipe URL", text: $url)
                        .keyboardType(.URL)
                        .textContentType(.URL)
                        .autocorrectionDisabled()
                        .textInputAutocapitalization(.never)
                } footer: {
                    Text("Paste the URL of a recipe you would like to import.")
                }

                Section {
                    Button {
                        Task {
                            await importRecipe()
                        }
                    } label: {
                        HStack {
                            Spacer()
                            if isLoading {
                                ProgressView()
                            } else {
                                Text("Import")
                            }
                            Spacer()
                        }
                    }
                    .disabled(url.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty || isLoading)
                }
            }
            .navigationTitle("Import Recipe")
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Cancel") {
                        dismiss()
                    }
                }
            }
            .alert("Import Failed", isPresented: $presentAlert) {
                Button("OK", role: .cancel) { }
            } message: {
                Text(alertMessage)
            }
        }
    }

    private func importRecipe() async {
        isLoading = true
        let (recipeDetail, error) = await appState.importRecipe(url: url)
        isLoading = false

        if let recipeDetail {
            dismiss()
            onImport(recipeDetail)
        } else {
            alertMessage = error?.localizedDescription ?? String(localized: "The recipe could not be imported. Please check the URL and try again.")
            presentAlert = true
        }
    }
}