package main

import (
	"fmt"
	"github.com/charmbracelet/bubbles/key"
	"github.com/charmbracelet/lipgloss"
	"reflect"
	"strings"
)

var helpStyle = lipgloss.NewStyle().PaddingLeft(4).PaddingTop(2).PaddingBottom(2)

func (m *model) helpView() []string {
	v := reflect.ValueOf(m.keyMap)
	fields := reflect.VisibleFields(v.Type())

	keys := make([]string, 0)
	for i := range fields {
		k := v.Field(i).Interface().(key.Binding)
		str := k.Help().Key
		if width(str) == 0 {
			str = strings.Join(k.Keys(), ", ")
		}
		keys = append(keys, fmt.Sprintf("%v    ", str))
	}

	desc := make([]string, 0)
	for i := range fields {
		k := v.Field(i).Interface().(key.Binding)
		desc = append(desc, fmt.Sprintf("%v", k.Help().Desc))
	}

	content := lipgloss.JoinHorizontal(
		lipgloss.Top,
		strings.Join(keys, "\n"),
		strings.Join(desc, "\n"),
	)

	return strings.Split(helpStyle.Render(content), "\n")
}