//
//  DictionaryView.swift
//  Toki Trainer
//
//  Created by maddiefuzz on 10/4/22.
//

import SwiftUI

enum SearchMode {
    case Dictionary
    case Definitions
}

struct DictionaryView: View {
    @ObservedObject var tokiDictViewModel = TokiDictionaryViewModel()
    
    @State private var tokiInput: String = ""
    @State private var selectedPartOfSpeech: String?
    @State var searchMode: SearchMode = .Dictionary
    
    @FocusState private var searchInputIsForuced: Bool
    
    var body: some View {
        VStack {
            TextField("Search", text: $tokiInput)
                .multilineTextAlignment(.center)
                .textInputAutocapitalization(.never)
                .disableAutocorrection(true)
                .padding(8)
                .onSubmit {
                    filterByInput()
                    //tokiDictViewModel.filterDictionaryEnglishMode(tokiInput)
                }
            Picker("Language", selection: $searchMode) {
                Text("Dictionary").tag(SearchMode.Dictionary)
                Text("Definitions").tag(SearchMode.Definitions)
            }
            .pickerStyle(SegmentedPickerStyle())
            .onTapGesture {
                if self.searchMode == SearchMode.Dictionary {
                    self.searchMode = SearchMode.Definitions
                } else {
                    self.searchMode = SearchMode.Dictionary
                }
                filterByInput()
            }
            List(tokiDictViewModel.dictionary, id: \.word) { entry in
                TokiWordsListEntryView(entry: entry, selectedPartOfSpeech: $selectedPartOfSpeech)
            }
            .sheet(item: $selectedPartOfSpeech) { selectedPOS in
                PartsOfSpeechView(selectedPartOfSpeech: selectedPOS)
            }
            .onChange(of: tokiInput) { newValue in
                filterByInput()
                //tokiDictViewModel.filterDictionaryEnglishMode(newValue)
            }
        }
        .onTapGesture {
            hideKeyboard()
        }
    }
    
    func filterByInput() {
        if self.searchMode == SearchMode.Dictionary {
            tokiDictViewModel.filterDictionary(tokiInput)
        } else {
            tokiDictViewModel.filterDictionaryEnglishMode(tokiInput)
        }
    }
}


struct DictionaryView_Previews: PreviewProvider {
    
    static var previews: some View {
        DictionaryView().previewLayout(.sizeThatFits).environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
    }
}