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 {
	var timeEntry, setsEntry, weightLeftEntry, weightRightEntry *widget.Entry

	loadData := func() {
		currentSettings := settingsService.LoadSettings()
		timeEntry.SetText(fmt.Sprintf("%d", currentSettings.TrainingTimeMinutes))
		setsEntry.SetText(fmt.Sprintf("%d", currentSettings.GoalSets))
		weightLeftEntry.SetText(fmt.Sprintf("%.1f", currentSettings.WeightLeft))
		weightRightEntry.SetText(fmt.Sprintf("%.1f", currentSettings.WeightRight))
	}

	timeEntry = widget.NewEntry()
	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.Validator = timeEntry.Validator

	weightLeftEntry = widget.NewEntry()
	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.Validator = weightLeftEntry.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:      settingsService.LoadSettings().InitialProgram,
			}
			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})
	layout := container.NewVBox(title, widget.NewSeparator(), form)
	paddedLayout := container.NewPadded(layout)
	if paddedLayout.Visible() {
		loadData()
	}

	return paddedLayout
}