package ui

import (
	"fmt"
	"strconv"

	"git.patanix.de/git/kettlebell-app/internal/services"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
)

func MakeSettingsScreen(settingsService *services.SettingsService, parent fyne.Window) fyne.CanvasObject {
	currentSettings := settingsService.LoadSettings()

	timeEntry := widget.NewEntry()
	timeEntry.SetText(fmt.Sprintf("%d", currentSettings.TrainingTimeMinutes))
	timeEntry.Validator = func(s string) error {
		if _, err := strconv.Atoi(s); err != nil {
			return fmt.Errorf("muss eine Zahl sein")
		}
		return nil
	}

	setsEntry := widget.NewEntry()
	setsEntry.SetText(fmt.Sprintf("%d", currentSettings.GoalSets))
	setsEntry.Validator = timeEntry.Validator // Gleicher Validator

	weightLeftEntry := widget.NewEntry()
	weightLeftEntry.SetText(fmt.Sprintf("%.1f", currentSettings.WeightLeft))
	weightLeftEntry.Validator = func(s string) error {
		if _, err := strconv.ParseFloat(s, 64); err != nil {
			return fmt.Errorf("muss eine Zahl sein")
		}
		return nil
	}

	weightRightEntry := widget.NewEntry()
	weightRightEntry.SetText(fmt.Sprintf("%.1f", currentSettings.WeightRight))
	weightRightEntry.Validator = weightLeftEntry.Validator // Gleicher Validator

	form := &widget.Form{
		Items: []*widget.FormItem{
			{Text: "Trainingszeit (Minuten)", Widget: timeEntry},
			{Text: "Ziel-Sätze", Widget: setsEntry},
			{Text: "Links (kg)", Widget: weightLeftEntry},
			{Text: "Rechts (kg)", Widget: weightRightEntry},
		},
		OnSubmit: func() {
			timeMin, _ := strconv.Atoi(timeEntry.Text)
			goal, _ := strconv.Atoi(setsEntry.Text)
			weightL, _ := strconv.ParseFloat(weightLeftEntry.Text, 64)
			weightR, _ := strconv.ParseFloat(weightRightEntry.Text, 64)

			newSettings := &services.Settings{
				TrainingTimeMinutes: timeMin,
				GoalSets:            goal,
				WeightLeft:          weightL,
				WeightRight:         weightR,
				InitialProgram:      currentSettings.InitialProgram, // Beibehalten
			}
			settingsService.SaveSettings(newSettings)

			fyne.CurrentApp().SendNotification(&fyne.Notification{
				Title:   "Gespeichert",
				Content: "Die Einstellungen wurden erfolgreich aktualisiert.",
			})
		},
	}

	title := widget.NewLabelWithStyle("Einstellungen", fyne.TextAlignLeading, fyne.TextStyle{Bold: true})
	title.TextStyle.Monospace = true // Workaround to force refresh on size change

	layout := container.NewVBox(
		title,
		widget.NewSeparator(),
		form,
	)

	return container.NewPadded(layout)
}