package handler

import (
	"fmt"

	"github.com/go-telegram/bot/models"
)

func mainKeyboard() models.InlineKeyboardMarkup {
	return models.InlineKeyboardMarkup{
		InlineKeyboard: [][]models.InlineKeyboardButton{
			{
				{Text: "Clock In", CallbackData: "clockin"},
				{Text: "Clock Out", CallbackData: "clockout"},
			},
			{
				{Text: "Work Type", CallbackData: "worktype"},
				{Text: "Day Off", CallbackData: "dayoff"},
			},
			{
				{Text: "Report", CallbackData: "report"},
				{Text: "Export", CallbackData: "export"},
				{Text: "History", CallbackData: "history"},
			},
			{
				{Text: "RPG", CallbackData: "rpg"},
				{Text: "League", CallbackData: "league"},
				{Text: "Burnout", CallbackData: "burnout"},
			},
			{
				{Text: "Salary", CallbackData: "salary"},
				{Text: "Settings", CallbackData: "settings"},
			},
		},
	}
}

func backKeyboard() models.InlineKeyboardMarkup {
	return models.InlineKeyboardMarkup{
		InlineKeyboard: [][]models.InlineKeyboardButton{
			{{Text: "Back to Menu", CallbackData: "back_menu"}},
		},
	}
}

func settingsBackKeyboard() models.InlineKeyboardMarkup {
	return models.InlineKeyboardMarkup{
		InlineKeyboard: [][]models.InlineKeyboardButton{
			{{Text: "Back to Settings", CallbackData: "back_settings"}},
		},
	}
}

// buildYearPicker returns a 12-year grid keyboard centered on centerYear.
func buildYearPicker(cbPrefix, backData, navSuffix string, centerYear int) models.InlineKeyboardMarkup {
	blockStart := centerYear - 6
	kbRows := [][]models.InlineKeyboardButton{
		{
			{Text: "<", CallbackData: fmt.Sprintf("%syears_%d%s", cbPrefix, blockStart-12, navSuffix)},
			{Text: fmt.Sprintf("%d", centerYear), CallbackData: "noop"},
			{Text: ">", CallbackData: fmt.Sprintf("%syears_%d%s", cbPrefix, blockStart+12, navSuffix)},
		},
	}
	for i := 0; i < 12; i += 4 {
		row := []models.InlineKeyboardButton{}
		for j := i; j < i+4; j++ {
			y := blockStart + j
			row = append(row, models.InlineKeyboardButton{
				Text: fmt.Sprintf("%d", y), CallbackData: fmt.Sprintf("%syear_%d", cbPrefix, y),
			})
		}
		kbRows = append(kbRows, row)
	}
	if backData != "" {
		kbRows = append(kbRows, []models.InlineKeyboardButton{
			{Text: "Back", CallbackData: backData},
		})
	}
	return models.InlineKeyboardMarkup{InlineKeyboard: kbRows}
}

// buildHourPickerKeyboard creates the 24-hour grid for time selection.
func buildHourPickerKeyboard(cb func(int) string, backData string) models.InlineKeyboardMarkup {
	kbRows := [][]models.InlineKeyboardButton{}
	hourRow := []models.InlineKeyboardButton{}
	for hh := 0; hh < 24; hh++ {
		hourRow = append(hourRow, models.InlineKeyboardButton{
			Text: fmt.Sprintf("%02d", hh), CallbackData: cb(hh),
		})
		if len(hourRow) == 6 || hh == 23 {
			kbRows = append(kbRows, hourRow)
			hourRow = nil
		}
	}
	kbRows = append(kbRows, []models.InlineKeyboardButton{{Text: "Back", CallbackData: backData}})
	return models.InlineKeyboardMarkup{InlineKeyboard: kbRows}
}

// buildMinutePickerKeyboard creates the 15-min interval row for minute selection.
func buildMinutePickerKeyboard(cb func(int) string, backData string) models.InlineKeyboardMarkup {
	kbRows := [][]models.InlineKeyboardButton{}
	minRow := []models.InlineKeyboardButton{}
	for _, mm := range []int{0, 10, 20, 30, 40, 50} {
		minRow = append(minRow, models.InlineKeyboardButton{
			Text: fmt.Sprintf("%02d", mm), CallbackData: cb(mm),
		})
	}
	kbRows = append(kbRows, minRow)
	kbRows = append(kbRows, []models.InlineKeyboardButton{{Text: "Back", CallbackData: backData}})
	return models.InlineKeyboardMarkup{InlineKeyboard: kbRows}
}