/*
 * Copyright (c) 2010-2023 Belledonne Communications SARL.
 *
 * This file is part of linphone-iphone
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

import SwiftUI
import linphonesw

struct ContentView: View {
    
    var contactManager = ContactsManager.shared
	var magicSearch = MagicSearchSingleton.shared
	
	@ObservedObject var sharedMainViewModel: SharedMainViewModel
	@ObservedObject var contactViewModel: ContactViewModel
	@ObservedObject var historyViewModel: HistoryViewModel
	@ObservedObject private var coreContext = CoreContext.shared
	
	@State var index = 0
	@State private var orientation = UIDevice.current.orientation
	@State var sideMenuIsOpen: Bool = false
	
	@State private var searchIsActive = false
	@State private var text = ""
	@FocusState private var focusedField: Bool
    @State var isMenuOpen: Bool = false
	
	var body: some View {
		if !sharedMainViewModel.welcomeViewDisplayed {
			WelcomeView(sharedMainViewModel: sharedMainViewModel)
		} else if coreContext.mCore.defaultAccount == nil || sharedMainViewModel.displayProfileMode {
			AssistantView(sharedMainViewModel: sharedMainViewModel)
		} else {
			GeometryReader { geometry in
				ZStack {
					VStack(spacing: 0) {
						HStack(spacing: 0) {
							if orientation == .landscapeLeft
								|| orientation == .landscapeRight
								|| UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height {
								VStack {
									Group {
										Spacer()
										Button(action: {
											self.index = 0
										}, label: {
											VStack {
												Image("address-book")
													.renderingMode(.template)
													.resizable()
													.foregroundStyle(self.index == 0 ? Color.orangeMain500 : Color.grayMain2c600)
													.frame(width: 25, height: 25)
												if self.index == 0 {
													Text("Contacts")
														.default_text_style_700(styleSize: 10)
												} else {
													Text("Contacts")
														.default_text_style(styleSize: 10)
												}
											}
										})
										
										Spacer()
										
										Button(action: {
											self.index = 1
											contactViewModel.contactTitle = ""
										}, label: {
											VStack {
												Image("phone")
													.renderingMode(.template)
													.resizable()
													.foregroundStyle(self.index == 1 ? Color.orangeMain500 : Color.grayMain2c600)
													.frame(width: 25, height: 25)
												if self.index == 1 {
													Text("Calls")
														.default_text_style_700(styleSize: 10)
												} else {
													Text("Calls")
														.default_text_style(styleSize: 10)
												}
											}
										})
										
										Spacer()
									}
								}
								.frame(width: 75)
								.padding(.leading,
										 orientation == .landscapeRight && geometry.safeAreaInsets.bottom > 0
										 ? -geometry.safeAreaInsets.leading
										 : 0)
							}
							
							VStack(spacing: 0) {
								if searchIsActive == false {
									HStack {
										Image("profile-image-example")
											.resizable()
											.frame(width: 45, height: 45)
											.clipShape(Circle())
											.onTapGesture {
												openMenu()
											}
										
										Text(index == 0 ? "Contacts" : "Calls")
											.default_text_style_white_800(styleSize: 20)
											.padding(.leading, 10)
										
										Spacer()
										
										Button {
											withAnimation {
												searchIsActive.toggle()
											}
										} label: {
											Image("search")
										}
                                        
                                        Menu {
                                            Button {
                                                isMenuOpen = false
                                                magicSearch.allContact = true
                                                magicSearch.searchForContacts(
                                                    sourceFlags: MagicSearch.Source.Friends.rawValue | MagicSearch.Source.LdapServers.rawValue)
                                            } label: {
                                                HStack {
                                                    Text("See all")
                                                    Spacer()
                                                    if magicSearch.allContact {
                                                        Image("green-check")
                                                    }
                                                }
                                            }
                                            
                                            Button {
                                                isMenuOpen = false
                                                magicSearch.allContact = false
                                                magicSearch.searchForContacts(
                                                    sourceFlags: MagicSearch.Source.Friends.rawValue | MagicSearch.Source.LdapServers.rawValue)
                                            } label: {
                                                HStack {
                                                    Text("See Linphone contact")
                                                    Spacer()
                                                    if !magicSearch.allContact {
                                                        Image("green-check")
                                                    }
                                                }
                                            }
                                        } label: {
											Image(index == 0 ? "filtres" : "more")
										}
										.padding(.leading)
                                        .onTapGesture {
                                            isMenuOpen = true
                                        }
									}
									.frame(maxWidth: .infinity)
									.frame(height: 50)
									.padding(.horizontal)
                                    .padding(.bottom, 5)
									.background(Color.orangeMain500)
								} else {
									HStack {
										Button {
											withAnimation {
												self.focusedField = false
												searchIsActive.toggle()
											}
											
											text = ""
											magicSearch.currentFilter = ""
                                            magicSearch.searchForContacts(
                                                sourceFlags: MagicSearch.Source.Friends.rawValue | MagicSearch.Source.LdapServers.rawValue)
										} label: {
											Image("caret-left")
												.renderingMode(.template)
												.resizable()
												.foregroundStyle(.white)
												.frame(width: 25, height: 25, alignment: .leading)
										}
										
										if #available(iOS 16.0, *) {
											TextEditor(text: Binding(
												get: {
													return text
												},
												set: { value in
													var newValue = value
													if value.contains("\n") {
														newValue = value.replacingOccurrences(of: "\n", with: "")
													}
													text = newValue
												}
											))
											.default_text_style_white_700(styleSize: 15)
											.padding(.all, 6)
											.accentColor(.white)
											.scrollContentBackground(.hidden)
											.focused($focusedField)
											.onAppear {
												self.focusedField = true
											}
											.onChange(of: text) { newValue in
												magicSearch.currentFilter = newValue
                                                magicSearch.searchForContacts(
                                                    sourceFlags: MagicSearch.Source.Friends.rawValue | MagicSearch.Source.LdapServers.rawValue)
											}
										} else {
											TextEditor(text: Binding(
												get: {
													return text
												},
												set: { value in
													var newValue = value
													if value.contains("\n") {
														newValue = value.replacingOccurrences(of: "\n", with: "")
													}
													text = newValue
												}
											))
											.default_text_style_white_700(styleSize: 15)
											.padding(.all, 6)
											.accentColor(.white)
											.focused($focusedField)
											.onAppear {
												self.focusedField = true
											}
											.onChange(of: text) { newValue in
												magicSearch.currentFilter = newValue
                                                magicSearch.searchForContacts(
                                                    sourceFlags: MagicSearch.Source.Friends.rawValue | MagicSearch.Source.LdapServers.rawValue)
											}
										}
										
										Button {
											text = ""
										} label: {
											Image("x")
												.renderingMode(.template)
												.resizable()
												.foregroundStyle(.white)
												.frame(width: 25, height: 25, alignment: .leading)
										}
										.padding(.leading)
									}
									.frame(maxWidth: .infinity)
									.frame(height: 50)
									.padding(.horizontal)
                                    .padding(.bottom, 5)
									.background(Color.orangeMain500)
								}
								
								if self.index == 0 {
									ContactsView(contactViewModel: contactViewModel, historyViewModel: historyViewModel)
								} else if self.index == 1 {
									HistoryView()
								}
							}
							.frame(maxWidth:
									(orientation == .landscapeLeft
									 || orientation == .landscapeRight
									 || UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height)
								   ? geometry.size.width/100*40
								   : .infinity
							)
							.background(
								Color.white
									.shadow(color: Color.gray200, radius: 4, x: 0, y: 0)
									.mask(Rectangle().padding(.horizontal, -8))
							)
							
							if orientation == .landscapeLeft
								|| orientation == .landscapeRight
								|| UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height {
								Spacer()
							}
						}
						
						if !(orientation == .landscapeLeft
							 || orientation == .landscapeRight
							 || UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height) && !searchIsActive {
							HStack {
								Group {
									Spacer()
									Button(action: {
										self.index = 0
									}, label: {
										VStack {
											Image("address-book")
												.renderingMode(.template)
												.resizable()
												.foregroundStyle(self.index == 0 ? Color.orangeMain500 : Color.grayMain2c600)
												.frame(width: 25, height: 25)
											if self.index == 0 {
												Text("Contacts")
													.default_text_style_700(styleSize: 10)
											} else {
												Text("Contacts")
													.default_text_style(styleSize: 10)
											}
										}
									})
									.padding(.top)
									
									Spacer()
									
									Button(action: {
										self.index = 1
										contactViewModel.contactTitle = ""
									}, label: {
										VStack {
											Image("phone")
												.renderingMode(.template)
												.resizable()
												.foregroundStyle(self.index == 1 ? Color.orangeMain500 : Color.grayMain2c600)
												.frame(width: 25, height: 25)
											if self.index == 1 {
												Text("Calls")
													.default_text_style_700(styleSize: 10)
											} else {
												Text("Calls")
													.default_text_style(styleSize: 10)
											}
										}
									})
									.padding(.top)
									Spacer()
								}
							}
							.padding(.bottom, geometry.safeAreaInsets.bottom > 0 ? 0 : 15)
							.background(
								Color.white
									.shadow(color: Color.gray200, radius: 4, x: 0, y: 0)
									.mask(Rectangle().padding(.top, -8))
							)
						}
					}
					
					if !contactViewModel.contactTitle.isEmpty || !historyViewModel.historyTitle.isEmpty {
						HStack(spacing: 0) {
							Spacer()
								.frame(maxWidth:
										(orientation == .landscapeLeft
										 || orientation == .landscapeRight
										 || UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height)
									   ? (geometry.size.width/100*40) + 75
									   : 0
								)
							if self.index == 0 {
								ContactFragment(contactViewModel: contactViewModel)
									.frame(maxWidth: .infinity)
									.background(Color.gray100)
									.ignoresSafeArea(.keyboard)
							} else if self.index == 1 {
								HistoryContactFragment()
									.frame(maxWidth: .infinity)
									.background(Color.gray100)
									.ignoresSafeArea(.keyboard)
							}
						}
						.onAppear {
							if !(orientation == .landscapeLeft
								 || orientation == .landscapeRight
								 || UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height)
								&& searchIsActive {
								self.focusedField = false
							}
						}
						.onDisappear {
							if !(orientation == .landscapeLeft
								 || orientation == .landscapeRight
								 || UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height)
								&& searchIsActive {
								self.focusedField = true
							}
						}
						.padding(.leading,
								 orientation == .landscapeRight && geometry.safeAreaInsets.bottom > 0
								 ? -geometry.safeAreaInsets.leading
								 : 0)
						.transition(.move(edge: .trailing))
						.zIndex(1)
					}
					
					SideMenu(
						width: geometry.size.width / 5 * 4,
						isOpen: self.sideMenuIsOpen,
						menuClose: self.openMenu,
						safeAreaInsets: geometry.safeAreaInsets
					)
					.ignoresSafeArea(.all)
					.zIndex(2)
				}
			}
            .overlay {
                if isMenuOpen {
                    Color.white.opacity(0.001)
                    .ignoresSafeArea()
                    .frame(maxWidth: .infinity, maxHeight: .infinity)
                    .onTapGesture {
                        isMenuOpen = false
                    }
                }
            }
			.onRotate { newOrientation in
				if (!contactViewModel.contactTitle.isEmpty || !historyViewModel.historyTitle.isEmpty) && searchIsActive {
					self.focusedField = false
				} else if searchIsActive {
					self.focusedField = true
				}
				orientation = newOrientation
			}
		}
	}
	
	func openMenu() {
		withAnimation {
			self.sideMenuIsOpen.toggle()
		}
	}
}

#Preview {
    ContentView(sharedMainViewModel: SharedMainViewModel(), contactViewModel: ContactViewModel(), historyViewModel: HistoryViewModel())
}