package views

import (
	"fmt"
	"strings"
	"unicode"
)

// SyncAction is a YouTrack sync menu choice.
type SyncAction string

const (
	SyncActionPull SyncAction = "pull"
	SyncActionPush SyncAction = "push"
)

// SyncOption is one row in the sync menu.
type SyncOption struct {
	Action   SyncAction
	Label    string
	Shortcut rune
}

// AllSyncOptions is the ordered sync menu.
var AllSyncOptions = []SyncOption{
	{Action: SyncActionPull, Label: "Pull from YouTrack", Shortcut: 'p'},
	{Action: SyncActionPush, Label: "Push to YouTrack", Shortcut: 'u'},
}

// SyncMenu renders a pull/push picker overlay.
type SyncMenu struct {
	Cursor int
	Width  int
	Styles StatusMenuStyles
}

// NewSyncMenu creates a sync action menu.
func NewSyncMenu(width int, styles StatusMenuStyles) SyncMenu {
	return SyncMenu{Cursor: 0, Width: width, Styles: styles}
}

// MoveDown moves the selection down.
func (m *SyncMenu) MoveDown() {
	if m.Cursor < len(AllSyncOptions)-1 {
		m.Cursor++
	}
}

// MoveUp moves the selection up.
func (m *SyncMenu) MoveUp() {
	if m.Cursor > 0 {
		m.Cursor--
	}
}

// JumpToShortcut selects the option whose shortcut matches r.
func (m *SyncMenu) JumpToShortcut(r rune) bool {
	r = unicode.ToLower(r)
	for i, opt := range AllSyncOptions {
		if opt.Shortcut == r {
			m.Cursor = i
			return true
		}
	}
	return false
}

// Selected returns the highlighted action.
func (m SyncMenu) Selected() SyncAction {
	if m.Cursor < 0 || m.Cursor >= len(AllSyncOptions) {
		return SyncActionPull
	}
	return AllSyncOptions[m.Cursor].Action
}

// View renders the sync menu.
func (m SyncMenu) View() string {
	var lines []string
	lines = append(lines, m.Styles.Title.Render("YouTrack"))
	for i, opt := range AllSyncOptions {
		entry := fmt.Sprintf("%c  %s", opt.Shortcut, opt.Label)
		if i == m.Cursor {
			lines = append(lines, m.Styles.Selected.Render("▸ "+entry))
		} else {
			lines = append(lines, m.Styles.Normal.Render("  "+entry))
		}
	}
	body := strings.Join(lines, "\n")
	w := m.Width
	if w < 20 {
		w = 20
	}
	return m.Styles.Box.Width(min(44, w-2)).Render(body)
}