1 files changed, 132 insertions, 0 deletions
diff --git a/internal/client/ui/messagebox/messagebox.go b/internal/client/ui/messagebox/messagebox.go
new file mode 100644
index 0000000..4b8d3d1
--- /dev/null
+++ b/internal/client/ui/messagebox/messagebox.go
@@ -0,0 +1,132 @@
+package messagebox
+
+import (
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/charmbracelet/bubbles/viewport"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+
+	"github.com/kyren223/eko/internal/client/api"
+	"github.com/kyren223/eko/internal/data"
+	"github.com/kyren223/eko/pkg/snowflake"
+)
+
+type user struct {
+	name       string
+	isFetching bool
+}
+
+type Model struct {
+	Viewport viewport.Model
+	messages []data.Message
+
+	senderStyle    lipgloss.Style
+	timestampStyle lipgloss.Style
+
+	users map[snowflake.ID]user
+}
+
+func New(width, height int) Model {
+	return Model{
+		Viewport:       viewport.New(width, height),
+		messages:       nil,
+		senderStyle:    lipgloss.NewStyle().Foreground(lipgloss.Color("5")).Bold(true),
+		timestampStyle: lipgloss.NewStyle().Foreground(lipgloss.Color("#585c62")).Italic(true),
+		users:          make(map[snowflake.ID]user),
+	}
+}
+
+func (m Model) Init() tea.Cmd {
+	return api.GetMessages
+}
+
+func (m Model) View() string {
+	return m.Viewport.View()
+}
+
+func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
+	var cmds []tea.Cmd
+
+	for id, user := range m.users {
+		if !user.isFetching && user.name == "" {
+			cmds = append(cmds, api.GetUserById(id))
+			user.isFetching = true
+			m.users[id] = user
+		}
+	}
+
+	var cmd tea.Cmd
+	m.Viewport, cmd = m.Viewport.Update(msg)
+	cmds = append(cmds, cmd)
+
+	switch msg := msg.(type) {
+	case api.UserProfileUpdate:
+		m.users[msg.ID] = user{msg.Name, false}
+		m.UpdateMessages()
+	}
+
+	return m, tea.Batch(cmds...)
+}
+
+func (m *Model) AppendMessage(message data.Message) {
+	m.messages = append(m.messages, message)
+	m.UpdateMessages()
+}
+
+func (m *Model) SetMessages(messages []data.Message) {
+	m.messages = messages
+	m.UpdateMessages()
+}
+
+func (m *Model) UpdateMessages() {
+	for _, message := range m.messages {
+		if _, exists := m.users[message.SenderID]; !exists {
+			m.users[message.SenderID] = user{name: "", isFetching: false}
+		}
+	}
+
+	m.sortMessages()
+	m.updateContent()
+	m.Viewport.GotoBottom()
+}
+
+func (m *Model) sortMessages() {
+	slices.SortFunc(m.messages, func(a, b data.Message) int {
+		if a.ID-b.ID < 0 {
+			return -1
+		} else {
+			return 1
+		}
+	})
+}
+
+func (m *Model) updateContent() {
+	if len(m.messages) == 0 {
+		return
+	}
+
+	var builder strings.Builder
+
+	for _, message := range m.messages {
+		sender := m.users[message.SenderID].name
+		builder.WriteString(m.senderStyle.Render(sender))
+		builder.WriteByte(' ')
+
+		timestamp := timestampFromID(message.ID)
+		builder.WriteString(m.timestampStyle.Render(timestamp))
+		builder.WriteByte('\n')
+
+		builder.WriteString(message.Content)
+		builder.WriteByte('\n')
+	}
+
+	m.Viewport.SetContent(builder.String()[:builder.Len()-1])
+}
+
+func timestampFromID(id snowflake.ID) string {
+	localTime := time.UnixMilli(id.Time())
+	return localTime.Format("02/01/2006 3:04 PM")
+}