Fearure:

- 增加收件箱功能（有BUG）
- 增加已发送|草稿箱|发送历史 本地记录

inbox/model.go

@@ -0,0 +1,189 @@
+package inbox
+
+import (
+	"fmt"
+	"io"
+	"time"
+
+	"github.com/charmbracelet/bubbles/list"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+type EmailItem struct {
+	UID       uint32
+	From      string
+	FromName  string
+	Subject   string
+	Date      time.Time
+	Preview   string
+	Account   string
+	AccountID string
+}
+
+func (e EmailItem) FilterValue() string {
+	return fmt.Sprintf("%s %s %s %s", e.Account, e.FromName, e.From, e.Subject)
+}
+
+func (e EmailItem) Title() string {
+	return fmt.Sprintf("%s · %s - %s", e.Account, e.FromName, e.Subject)
+}
+
+func (e EmailItem) Description() string {
+	return e.Preview
+}
+
+func formatTimeAgo(d time.Duration) string {
+	if d < time.Minute {
+		return "刚刚"
+	}
+	if d < time.Hour {
+		mins := int(d.Minutes())
+		return fmt.Sprintf("%d分钟前", mins)
+	}
+	if d < 24*time.Hour {
+		hours := int(d.Hours())
+		return fmt.Sprintf("%d小时前", hours)
+	}
+	if d < 7*24*time.Hour {
+		days := int(d.Hours() / 24)
+		return fmt.Sprintf("%d天前", days)
+	}
+	return d.Truncate(24 * time.Hour).String()
+}
+
+type InboxModel struct {
+	list          list.Model
+	emails        []EmailItem
+	loading       bool
+	err           error
+	selectedEmail *EmailItem
+}
+
+func NewInboxModel() *InboxModel {
+	l := list.New(nil, emailDelegate{}, 0, 10)
+	l.Title = "收件箱"
+	l.Styles.Title = inboxTitleStyle
+	l.Styles.NoItems = inboxNoItemsStyle
+	l.SetShowHelp(true)
+	l.SetShowPagination(false)
+
+	return &InboxModel{
+		list:   l,
+		emails: []EmailItem{},
+	}
+}
+
+func (m *InboxModel) SetEmails(emails []EmailItem) {
+	m.emails = emails
+	items := make([]list.Item, len(emails))
+	for i, e := range emails {
+		items[i] = e
+	}
+	m.list.SetItems(items)
+	m.list.Title = fmt.Sprintf("收件箱 (%d 封新邮件)", len(items))
+}
+
+func (m InboxModel) Init() tea.Cmd {
+	return nil
+}
+
+func (m *InboxModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		if msg.String() == "ctrl+c" {
+			return m, tea.Quit
+		}
+	case tea.WindowSizeMsg:
+		m.list.SetWidth(msg.Width)
+	}
+	var cmd tea.Cmd
+	m.list, cmd = m.list.Update(msg)
+	return m, cmd
+}
+
+func (m InboxModel) View() string {
+	if m.loading {
+		return loadingStyle.Render("正在加载邮件...")
+	}
+	if m.err != nil {
+		return errorStyle.Render(fmt.Sprintf("错误: %v", m.err))
+	}
+	return m.list.View()
+}
+
+func (m *InboxModel) SetLoading(loading bool) {
+	m.loading = loading
+}
+
+func (m *InboxModel) SetError(err error) {
+	m.err = err
+}
+
+func (m InboxModel) SelectedEmail() *EmailItem {
+	idx := m.list.Index()
+	if idx >= 0 && idx < len(m.emails) {
+		return &m.emails[idx]
+	}
+	return nil
+}
+
+var (
+	inboxTitleStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("86")).
+			Bold(true)
+
+	inboxNoItemsStyle = lipgloss.NewStyle().
+				Foreground(lipgloss.Color("241")).
+				Padding(1, 2)
+
+	loadingStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("86")).
+			Padding(1, 2)
+
+	errorStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("196")).
+			Padding(1, 2)
+)
+
+type emailDelegate struct{}
+
+func (d emailDelegate) Height() int  { return 1 }
+func (d emailDelegate) Spacing() int { return 0 }
+func (d emailDelegate) Update(msg tea.Msg, m *list.Model) tea.Cmd {
+	return nil
+}
+func (d emailDelegate) Render(w io.Writer, m list.Model, index int, item list.Item) {
+	email, ok := item.(EmailItem)
+	if !ok {
+		return
+	}
+
+	isSelected := index == m.Index()
+
+	titleStyle := emailTitleStyle
+	descStyle := emailDescStyle
+
+	if isSelected {
+		titleStyle = emailTitleStyleSelected
+		descStyle = emailDescStyleSelected
+	}
+
+	fmt.Fprintf(w, "%s\n%s", titleStyle.Render(email.Title()), descStyle.Render(email.Description()))
+}
+
+var (
+	emailTitleStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("255"))
+
+	emailTitleStyleSelected = lipgloss.NewStyle().
+				Foreground(lipgloss.Color("255")).
+				Background(lipgloss.Color("68"))
+
+	emailDescStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("241"))
+
+	emailDescStyleSelected = lipgloss.NewStyle().
+				Foreground(lipgloss.Color("186")).
+				Background(lipgloss.Color("68"))
+)