import Foundation
import SwiftUI

@MainActor
class ProfileListViewModel: ObservableObject {
    @Published var profiles: [Profile] = []
    @Published var isLoading = false
    @Published var errorMessage: String?
    @Published var searchText = ""
    
    var filteredProfiles: [Profile] {
        if searchText.isEmpty {
            return profiles
        }
        return profiles.filter { 
            $0.name.localizedCaseInsensitiveContains(searchText) ||
            ($0.gruppename?.localizedCaseInsensitiveContains(searchText) ?? false)
        }
    }
    
    var groupedProfiles: [String: [Profile]] {
        Dictionary(grouping: filteredProfiles) { $0.gruppename ?? "Keine Gruppe" }
    }
    
    var groupNames: [String] {
        groupedProfiles.keys.sorted()
    }
    
    func loadProfiles() async {
        isLoading = true
        errorMessage = nil
        
        do {
            profiles = try await APIService.shared.getProfiles()
        } catch {
            errorMessage = "Fehler beim Laden: \(error.localizedDescription)"
        }
        
        isLoading = false
    }
    
    func deleteProfile(at offsets: IndexSet, from group: String? = nil) async {
        let profilesToDelete: [Profile]
        if let group = group {
            profilesToDelete = groupedProfiles[group] ?? []
        } else {
            profilesToDelete = filteredProfiles
        }
        
        for index in offsets {
            let profile = profilesToDelete[index]
            do {
                let success = try await APIService.shared.deleteProfile(id: profile.profilID)
                if success {
                    profiles.removeAll { $0.id == profile.id }
                }
            } catch {
                errorMessage = "Fehler beim Löschen: \(error.localizedDescription)"
            }
        }
    }
    
    func getProfilesForGroup(_ groupName: String) -> [Profile] {
        return groupedProfiles[groupName] ?? []
    }
}