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// Eko: A terminal based social media platform
// Copyright (C) 2025 Kyren223
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package signaladd
import (
"errors"
"log"
"slices"
"strconv"
"strings"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/kyren223/eko/internal/client/ui/colors"
"github.com/kyren223/eko/internal/client/ui/core/state"
"github.com/kyren223/eko/internal/client/ui/field"
"github.com/kyren223/eko/internal/client/ui/layouts/flex"
"github.com/kyren223/eko/pkg/assert"
"github.com/kyren223/eko/pkg/snowflake"
)
var (
width = 48
blurredCreate = func() string {
return lipgloss.NewStyle().Padding(0, 1).
Background(colors.Gray).Foreground(colors.White).
Render("Add user signal")
}
focusedCreate = func() string {
return lipgloss.NewStyle().Padding(0, 1).
Background(colors.Blue).Foreground(colors.White).
Render("Add user signal")
}
)
const (
MaxIconLength = 2
MaxHexDigits = 6
)
const (
NameField = iota
CreateField
FieldCount
)
type Model struct {
name field.Model
create string
selected int
nameWidth int
}
func New() Model {
headerStyle := lipgloss.NewStyle().Foreground(colors.Turquoise)
blurredTextStyle := lipgloss.NewStyle().
Background(colors.Background).Foreground(colors.White)
focusedTextStyle := blurredTextStyle.Foreground(colors.Focus)
fieldBlurredStyle := lipgloss.NewStyle().
PaddingLeft(1).
Border(lipgloss.RoundedBorder()).
BorderForeground(colors.DarkCyan).
BorderBackground(colors.Background).
Background(colors.Background)
fieldFocusedStyle := fieldBlurredStyle.
Border(lipgloss.ThickBorder()).
BorderForeground(colors.Focus)
name := field.New(width)
name.Header = "User ID"
name.HeaderStyle = headerStyle
name.FocusedStyle = fieldFocusedStyle
name.BlurredStyle = fieldBlurredStyle
name.FocusedTextStyle = focusedTextStyle
name.BlurredTextStyle = blurredTextStyle
name.ErrorStyle = lipgloss.NewStyle().Background(colors.Background).Foreground(colors.Error)
name.Input.CharLimit = width
name.Focus()
name.Input.Validate = func(s string) error {
if strings.TrimSpace(s) == "" {
return errors.New("cannot be empty")
}
if _, err := strconv.ParseInt(s, 10, 64); err != nil {
return errors.New("invalid user id")
}
return nil
}
nameWidth := lipgloss.Width(name.View())
return Model{
name: name,
create: blurredCreate(),
nameWidth: nameWidth,
}
}
func (m Model) Init() tea.Cmd {
return nil
}
func (m Model) View() string {
name := m.name.View()
create := lipgloss.NewStyle().
Width(m.nameWidth).
Background(colors.Background).
Align(lipgloss.Center).
Render(m.create)
content := flex.NewVertical(name, create).WithGap(1).View()
return lipgloss.NewStyle().
Border(lipgloss.ThickBorder()).
Padding(1, 4).
Align(lipgloss.Center, lipgloss.Center).
BorderBackground(colors.Background).
BorderForeground(colors.White).
Background(colors.Background).
Foreground(colors.White).
Render(content)
}
func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
key := msg.Type
switch key {
case tea.KeyTab:
return m, m.cycle(1)
case tea.KeyShiftTab:
return m, m.cycle(-1)
default:
var cmd tea.Cmd
switch m.selected {
case NameField:
m.name, cmd = m.name.Update(msg)
}
return m, cmd
}
}
return m, nil
}
func (m *Model) cycle(step int) tea.Cmd {
m.selected += step
if m.selected < 0 {
m.selected = FieldCount - 1
} else {
m.selected %= FieldCount
}
return m.updateFocus()
}
func (m *Model) updateFocus() tea.Cmd {
m.name.Blur()
m.create = blurredCreate()
switch m.selected {
case NameField:
return m.name.Focus()
case CreateField:
m.create = focusedCreate()
return nil
default:
assert.Never("missing switch statement field in update focus", "selected", m.selected)
return nil
}
}
func (m *Model) Select() (tea.Cmd, int) {
if m.selected != CreateField {
return nil, -1
}
m.name.Input.Err = m.name.Input.Validate(m.name.Input.Value())
if m.name.Input.Err != nil {
return nil, -1
}
name := m.name.Input.Value()
num, err := strconv.ParseInt(name, 10, 64)
id := snowflake.ID(num)
assert.NoError(err, "input is already validated to be valid")
index := -1
for i, signal := range state.Data.Signals {
if signal == id {
index = i
break
}
}
if index != -1 {
return nil, index
}
state.Data.Signals = slices.Insert(state.Data.Signals, 0, id)
log.Println("Signals:", state.Data.Signals)
return nil, 0
}
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