package ui

import (
	"sort"

	"charm.land/bubbles/v2/key"
	tea "charm.land/bubbletea/v2"
	"charm.land/lipgloss/v2"

	"git.morlana.online/f.weber/vault-tui/internal/ui/keys"
)

// textInputActive reports whether a free-text field currently owns the
// keyboard, so global single-letter bindings (help "?", profiles "p", ...)
// don't get eaten while the user is typing a value/filter that happens to
// contain that letter.
func (m *Model) textInputActive() bool {
	if m.top() == scrEditor {
		return true
	}
	if m.top() == scrAuth && m.auth.phase == 1 {
		return true
	}
	if (m.top() == scrMounts || m.top() == scrBrowser) && m.listReady && m.list.SettingFilter() {
		return true
	}
	return false
}

func (m *Model) openProfilePicker() (tea.Model, tea.Cmd) {
	names := make([]string, 0, len(m.a.File.Profiles))
	for n := range m.a.File.Profiles {
		names = append(names, n)
	}
	sort.Strings(names)
	cursor := 0
	for i, n := range names {
		if n == m.a.Settings.Profile {
			cursor = i
		}
	}
	m.profile = profileState{open: true, names: names, cursor: cursor}
	return m, nil
}

func (m *Model) updateProfilePicker(msg tea.KeyPressMsg) (tea.Model, tea.Cmd) {
	switch {
	case key.Matches(msg, m.keys.Up):
		if m.profile.cursor > 0 {
			m.profile.cursor--
		}
	case key.Matches(msg, m.keys.Down):
		if m.profile.cursor < len(m.profile.names)-1 {
			m.profile.cursor++
		}
	case key.Matches(msg, m.keys.Enter):
		return m.switchToSelectedProfile()
	case key.Matches(msg, m.keys.Back), key.Matches(msg, m.keys.Quit):
		m.profile.open = false
	}
	return m, nil
}

func (m *Model) switchToSelectedProfile() (tea.Model, tea.Cmd) {
	name := m.profile.names[m.profile.cursor]
	m.profile.open = false
	if name == m.a.Settings.Profile {
		return m, nil
	}
	if err := m.a.SwitchProfile(name); err != nil {
		return m, m.notify(toastErr, "switch profile: %v", err)
	}

	m.svc = m.a.Service()
	km := keys.Default()
	_ = km.Apply(m.a.File.Keys) // already validated once at startup; config hasn't changed
	if m.a.Settings.ReadOnly {
		km.DisableWrites()
	}
	m.keys = km
	m.tokenInfo = nil
	m.listSelect = ""
	return m, m.startAuth()
}

func (m *Model) confirmLogout() (tea.Model, tea.Cmd) {
	profile := m.a.Settings.Profile
	action := func() tea.Cmd {
		return func() tea.Msg {
			return logoutDoneMsg{err: m.a.Store.Erase(m.ctx)}
		}
	}
	m.confirm = &confirmSpec{
		title:     "Log out?",
		body:      "Forgets the saved token for profile " + profile + ". This does not revoke it in Vault.",
		onConfirm: action,
	}
	return m, nil
}

func (m *Model) viewProfilePicker() string {
	lines := []string{m.styles.ModalTitle.Render("Switch profile"), ""}
	for i, n := range m.profile.names {
		marker := "  "
		if n == m.a.Settings.Profile {
			marker = m.styles.SuccessText.Render(symCurrent) + " "
		}
		line := marker + n
		if i == m.profile.cursor {
			line = m.styles.RowSelected.Render(padRight(marker+n, 28))
		}
		lines = append(lines, line)
	}
	lines = append(lines, "", m.styles.Help.Render("↑/↓ move  •  enter switch  •  esc cancel"))
	return m.styles.Modal.Render(lipgloss.JoinVertical(lipgloss.Left, lines...))
}