//
//  AddExercise.swift
//  WorkoutsPlus
//
//  Created by Felix Förtsch on 21.09.24.
//

import SwiftUI
import SwiftData

struct AddExercise: View {
		@Environment(\.modelContext) private var modelContext
		@Environment(\.dismiss) private var dismiss
		var isPresentedAsSheet: Bool = false
		
		@State var exercise: Exercise = Exercise("")
		
		@State private var name: String = ""
		@State private var description: String = ""
		@State private var type: ExerciseType?
		@State private var unit: ExerciseUnit?
		
		@State private var isPartOfProgression: Bool = false
		
		@Query(sort: \ExerciseType.name) private var exerciseTypes: [ExerciseType]
		@Query(sort: \ExerciseUnit.name) private var exerciseUnits: [ExerciseUnit]
		
		var body: some View {
				NavigationStack {
						VStack {
								Form {
										Section {
												TextField("Exercise Name", text: $name)
												// TODO: Add Autocomplete
												TextEditorWithPlaceholder(text: $description, placeholder: "Description (optional)")
										}
										Section(footer: Text("""
																																		Examples:
																																		• Pull-up → None
																																		• Weighted Pull-up → Weight 
																																		• Sprint → Time or Distance
																																		""")) {
												Picker("Exercise Type", selection: $type) {
														Text("None").tag(nil as ExerciseType?)
														ForEach(exerciseTypes, id: \.self) { type in
																Text("\(type.name)").tag(type as ExerciseType?)
														}
												}
												.pickerStyle(NavigationLinkPickerStyle())
												Picker("Exercise Unit", selection: $unit) {
														Text("None").tag(nil as ExerciseUnit?)
														ForEach(exerciseUnits, id: \.self) { unit in
																Text("\(unit.name) (\(unit.symbol))").tag(unit as ExerciseUnit?)
														}
												}
												.pickerStyle(NavigationLinkPickerStyle())
										}
								}
								.navigationTitle("Add New Exercise")
								.toolbar {
										if isPresentedAsSheet {
												ToolbarItem(placement: .cancellationAction) {
														Button("Cancel", role: .cancel) {
																dismiss()
														}
												}
										}
										ToolbarItem(placement: .confirmationAction) {
												Button("Save") {
														withAnimation {
																saveNew()
																dismiss()
														}
												}
										}
								}
						}
				}
		}
		
		private func saveNew() {
				let exerciseToSave = Exercise(name)
				modelContext.insert(exerciseToSave)
				
				exerciseToSave.name = name
				exerciseToSave.exerciseDescription = description
				exerciseToSave.type = type
				exerciseToSave.isPartOfProgression = isPartOfProgression
		}
}

#Preview {
		AddExercise()
}