//
//  External Notification Config.swift
//  Meshtastic Apple
//
//  Copyright (c) Garth Vander Houwen 6/22/22.
//
import SwiftUI
import OSLog

struct ExternalNotificationConfig: View {

	@Environment(\.managedObjectContext) var context
	@EnvironmentObject var bleManager: BLEManager
	@Environment(\.dismiss) private var goBack

	var node: NodeInfoEntity?

	@State private var isPresentingSaveConfirm: Bool = false
	@State var hasChanges = false
	@State var enabled = false
	@State var alertBell = false
	@State var alertBellBuzzer = false
	@State var alertBellVibra = false
	@State var alertMessage = false
	@State var alertMessageBuzzer = false
	@State var alertMessageVibra = false
	@State var active = false
	@State var usePWM = false
	@State var output = 0
	@State var outputBuzzer = 0
	@State var outputVibra = 0
	@State var outputMilliseconds = 0
	@State var nagTimeout = 0
	@State var useI2SAsBuzzer = false

	var body: some View {
		VStack {
			Form {
				ConfigHeader(title: "External notification", config: \.externalNotificationConfig, node: node, onAppear: setExternalNotificationValues)

				Section(header: Text("options")) {

					Toggle(isOn: $enabled) {
						Label("enabled", systemImage: "megaphone")
					}
					.toggleStyle(SwitchToggleStyle(tint: .accentColor))

					Toggle(isOn: $alertBell) {
						Label("Alert when receiving a bell", systemImage: "bell")
					}
					.toggleStyle(SwitchToggleStyle(tint: .accentColor))

					Toggle(isOn: $alertMessage) {
						Label("Alert when receiving a message", systemImage: "message")
					}
					.toggleStyle(SwitchToggleStyle(tint: .accentColor))

					Toggle(isOn: $usePWM) {
						Label("Use PWM Buzzer", systemImage: "light.beacon.max.fill")
						Text("Use a PWM output (like the RAK Buzzer) for tunes instead of an on/off output. This will ignore the output, output duration and active settings and use the device config buzzer GPIO option instead.")
					}
					.toggleStyle(SwitchToggleStyle(tint: .accentColor))

					Toggle(isOn: $useI2SAsBuzzer) {
						Label("Use I2S As Buzzer", systemImage: "light.beacon.max.fill")
						Text("Enables devices with native I2S audio output to use the RTTTL over speaker like a buzzer. T-Watch S3 and T-Deck for example have this capability.")
					}
					.toggleStyle(SwitchToggleStyle(tint: .accentColor))
				}
				Section(header: Text("Advanced GPIO Options")) {
					Section(header: Text("Primary GPIO")
						.font(.caption)
						.foregroundColor(.gray)
						.textCase(.uppercase)) {
							Toggle(isOn: $active) {
								Label("Active", systemImage: "togglepower")
								Text("If enabled, the 'output' Pin will be pulled active high, disabled means active low.")
							}
							.toggleStyle(SwitchToggleStyle(tint: .accentColor))

							Picker("Output pin GPIO", selection: $output) {
								ForEach(0..<49) {
									if $0 == 0 {
										Text("unset")
									} else {
										Text("Pin \($0)")
									}
								}
							}
							.pickerStyle(DefaultPickerStyle())
							.listRowSeparator(.visible)

							Picker("GPIO Output Duration", selection: $outputMilliseconds ) {
								ForEach(OutputIntervals.allCases) { oi in
									Text(oi.description)
								}
							}
							.pickerStyle(DefaultPickerStyle())
							.listRowSeparator(.hidden)
							Text("When using in GPIO mode, keep the output on for this long. ")
								.foregroundColor(.gray)
								.font(.callout)
								.listRowSeparator(.visible)

							Picker("Nag timeout", selection: $nagTimeout ) {
								ForEach(NagIntervals.allCases) { oi in
									Text(oi.description)
								}
							}
							.pickerStyle(DefaultPickerStyle())
							.listRowSeparator(.hidden)
							Text("Specifies how long the monitored GPIO should output.")
								.foregroundColor(.gray)
								.font(.callout)
						}

					Section(header: Text("Optional GPIO")
						.font(.caption)
						.foregroundColor(.gray)
						.textCase(.uppercase)) {
							Toggle(isOn: $alertBellBuzzer) {
								Label("Alert GPIO buzzer when receiving a bell", systemImage: "bell")
							}
							.toggleStyle(SwitchToggleStyle(tint: .accentColor))
							Toggle(isOn: $alertBellVibra) {
								Label("Alert GPIO vibra motor when receiving a bell", systemImage: "bell")
							}
							.toggleStyle(SwitchToggleStyle(tint: .accentColor))
							Toggle(isOn: $alertMessageBuzzer) {
								Label("Alert GPIO buzzer when receiving a message", systemImage: "message")
							}
							.toggleStyle(SwitchToggleStyle(tint: .accentColor))
							Toggle(isOn: $alertMessageBuzzer) {
								Label("Alert GPIO vibra motor when receiving a message", systemImage: "message")
							}
							.toggleStyle(SwitchToggleStyle(tint: .accentColor))
							Picker("Output pin buzzer GPIO ", selection: $outputBuzzer) {
								ForEach(0..<49) {
									if $0 == 0 {
										Text("unset")
									} else {
										Text("Pin \($0)")
									}
								}
							}
							.pickerStyle(DefaultPickerStyle())
							Picker("Output pin vibra GPIO", selection: $outputVibra) {
								ForEach(0..<49) {
									if $0 == 0 {
										Text("unset")
									} else {
										Text("Pin \($0)")
									}
								}
							}
							.pickerStyle(DefaultPickerStyle())
						}
				}
			}
			.disabled(self.bleManager.connectedPeripheral == nil || node?.externalNotificationConfig == nil)
		}

		SaveConfigButton(node: node, hasChanges: $hasChanges) {
			let connectedNode = getNodeInfo(id: bleManager.connectedPeripheral?.num ?? -1, context: context)
			if connectedNode != nil {
				var enc = ModuleConfig.ExternalNotificationConfig()
				enc.enabled = enabled
				enc.alertBell = alertBell
				enc.alertBellBuzzer = alertBellBuzzer
				enc.alertBellVibra = alertBellVibra
				enc.alertMessage = alertMessage
				enc.alertMessageBuzzer = alertMessageBuzzer
				enc.alertMessageVibra = alertMessageVibra
				enc.active = active
				enc.output = UInt32(output)
				enc.nagTimeout = UInt32(nagTimeout)
				enc.outputBuzzer = UInt32(outputBuzzer)
				enc.outputVibra = UInt32(outputVibra)
				enc.outputMs = UInt32(outputMilliseconds)
				enc.usePwm = usePWM
				enc.useI2SAsBuzzer = useI2SAsBuzzer
				let adminMessageId =  bleManager.saveExternalNotificationModuleConfig(config: enc, fromUser: connectedNode!.user!, toUser: node!.user!, adminIndex: connectedNode?.myInfo?.adminIndex ?? 0)
				if adminMessageId > 0 {
					// Should show a saved successfully alert once I know that to be true
					// for now just disable the button after a successful save
					hasChanges = false
					goBack()
				}
			}
		}
		.navigationTitle("external.notification.config")
		.navigationBarItems(trailing:
								ZStack {
			ConnectedDevice(bluetoothOn: bleManager.isSwitchedOn, deviceConnected: bleManager.connectedPeripheral != nil, name: (bleManager.connectedPeripheral != nil) ? bleManager.connectedPeripheral.shortName : "?")
		})
		.onAppear {
			if self.bleManager.context == nil {
				self.bleManager.context = context
			}
			setExternalNotificationValues()
			// Need to request a TelemetryModuleConfig from the remote node before allowing changes
			if bleManager.connectedPeripheral != nil && node?.externalNotificationConfig == nil {
				Logger.mesh.info("empty external notification module config")
				let connectedNode = getNodeInfo(id: bleManager.connectedPeripheral.num, context: context)
				if node != nil && connectedNode != nil {
					_ = bleManager.requestExternalNotificationModuleConfig(fromUser: connectedNode!.user!, toUser: node!.user!, adminIndex: connectedNode?.myInfo?.adminIndex ?? 0)
				}
			}
		}
		.onChange(of: enabled) { newEnabled in
			if node != nil && node!.externalNotificationConfig != nil {
				if newEnabled != node!.externalNotificationConfig!.enabled { hasChanges = true }
			}
		}
		.onChange(of: alertBell) { newAlertBell in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertBell != node!.externalNotificationConfig!.alertBell { hasChanges = true }
			}
		}
		.onChange(of: alertBellBuzzer) { newAlertBellBuzzer in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertBellBuzzer != node!.externalNotificationConfig!.alertBellBuzzer { hasChanges = true }
			}
		}
		.onChange(of: alertBellVibra) { newAlertBellVibra in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertBellVibra != node!.externalNotificationConfig!.alertBellVibra { hasChanges = true }
			}
		}
		.onChange(of: alertMessage) { newAlertMessage in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertMessage != node!.externalNotificationConfig!.alertMessage { hasChanges = true }
			}
		}
		.onChange(of: alertMessageBuzzer) { newAlertMessageBuzzer in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertMessageBuzzer != node!.externalNotificationConfig!.alertMessageBuzzer { hasChanges = true }
			}
		}
		.onChange(of: alertMessageVibra) { newAlertMessageVibra in
			if node != nil && node!.externalNotificationConfig != nil {
				if newAlertMessageVibra != node!.externalNotificationConfig!.alertMessageVibra { hasChanges = true }
			}
		}
		.onChange(of: active) { newActive in
			if node != nil && node!.externalNotificationConfig != nil {
				if newActive != node!.externalNotificationConfig!.active { hasChanges = true }
			}
		}
		.onChange(of: output) { newOutput in
			if node != nil && node!.externalNotificationConfig != nil {
				if newOutput != node!.externalNotificationConfig!.output { hasChanges = true }
			}
		}
		.onChange(of: output) { newOutputBuzzer in
			if node != nil && node!.externalNotificationConfig != nil {
				if newOutputBuzzer != node!.externalNotificationConfig!.outputBuzzer { hasChanges = true }
			}
		}
		.onChange(of: output) { newOutputVibra in
			if node != nil && node!.externalNotificationConfig != nil {
				if newOutputVibra != node!.externalNotificationConfig!.outputVibra { hasChanges = true }
			}
		}
		.onChange(of: outputMilliseconds) { newOutputMs in
			if node != nil && node!.externalNotificationConfig != nil {
				if newOutputMs != node!.externalNotificationConfig!.outputMilliseconds { hasChanges = true }
			}
		}
		.onChange(of: usePWM) { newUsePWM in
			if node != nil && node!.externalNotificationConfig != nil {
				if newUsePWM != node!.externalNotificationConfig!.usePWM { hasChanges = true }
			}
		}
		.onChange(of: nagTimeout) { newNagTimeout in
			if node != nil && node!.externalNotificationConfig != nil {
				if newNagTimeout != node!.externalNotificationConfig!.nagTimeout { hasChanges = true }
			}
		}
		.onChange(of: useI2SAsBuzzer) { newUseI2SAsBuzzer in
			if node != nil && node!.externalNotificationConfig != nil {
				if newUseI2SAsBuzzer != node!.externalNotificationConfig!.useI2SAsBuzzer { hasChanges = true }
			}
		}
	}
	func setExternalNotificationValues() {
		self.enabled = node?.externalNotificationConfig?.enabled ?? false
		self.alertBell = node?.externalNotificationConfig?.alertBell ?? false
		self.alertBellBuzzer = node?.externalNotificationConfig?.alertBellBuzzer ?? false
		self.alertBellVibra = node?.externalNotificationConfig?.alertBellVibra ?? false
		self.alertMessage = node?.externalNotificationConfig?.alertMessage ?? false
		self.alertMessageBuzzer = node?.externalNotificationConfig?.alertMessageBuzzer ?? false
		self.alertMessageVibra = node?.externalNotificationConfig?.alertMessageVibra ?? false
		self.active = node?.externalNotificationConfig?.active ?? false
		self.output = Int(node?.externalNotificationConfig?.output ?? 0)
		self.outputBuzzer = Int(node?.externalNotificationConfig?.outputBuzzer ?? 0)
		self.outputVibra = Int(node?.externalNotificationConfig?.outputVibra ?? 0)
		self.outputMilliseconds = Int(node?.externalNotificationConfig?.outputMilliseconds ?? 0)
		self.nagTimeout = Int(node?.externalNotificationConfig?.nagTimeout ?? 0)
		self.usePWM = node?.externalNotificationConfig?.usePWM ?? false
		self.useI2SAsBuzzer = node?.externalNotificationConfig?.useI2SAsBuzzer ?? false
		self.hasChanges = false
	}
}