feat: 实现模块6 - TUI集成翻译 (Enter翻译/异步执行/加载状态)

internal/tui/app.go

@@ -1,6 +1,8 @@
 package tui
 
 import (
+	"context"
+
 	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
@@ -13,8 +15,15 @@ type model struct {
 	translator *translator.Translator
 	textInput  textinput.Model
 	result     string
+	errMsg     string
 	targetLang string
 	langIndex  int
+	loading    bool
+}
+
+type translateMsg struct {
+	result string
+	err    error
 }
 
 var (
@@ -29,6 +38,9 @@ var (
 	resultStyle = lipgloss.NewStyle().
 			Foreground(lipgloss.Color("#98FB98")).
 			Background(lipgloss.Color("#0D1B2A"))
+	errorStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("#FF6B6B")).
+			Background(lipgloss.Color("#1A1A2E"))
 	helpStyle = lipgloss.NewStyle().
 			Foreground(lipgloss.Color("#888888"))
 	statusBarStyle = lipgloss.NewStyle().
@@ -40,6 +52,8 @@ var (
 			Bold(true)
 	keyStyle = lipgloss.NewStyle().
 			Foreground(lipgloss.Color("#60A5FA"))
+	loadingStyle = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("#60A5FA"))
 )
 
 var supportedLangs = []string{"zh-CN", "en-US", "ja", "ko", "zh-TW", "es", "fr", "de"}
@@ -72,22 +86,45 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	var cmd tea.Cmd
 
 	switch msg := msg.(type) {
+	case translateMsg:
+		m.loading = false
+		if msg.err != nil {
+			m.errMsg = msg.err.Error()
+			m.result = ""
+		} else {
+			m.result = msg.result
+			m.errMsg = ""
+		}
+		return m, nil
+
 	case tea.KeyMsg:
 		switch msg.Type {
 		case tea.KeyEnter:
-			// 回车键处理，后续模块会添加翻译逻辑
+			if m.loading {
+				return m, nil
+			}
+			text := m.textInput.Value()
+			if text == "" {
+				return m, nil
+			}
+			m.loading = true
+			m.errMsg = ""
+			return m, m.doTranslate(text, m.targetLang)
+
 		case tea.KeyCtrlC:
 			return m, tea.Quit
+
 		case tea.KeyCtrlL:
-			// Ctrl+L: 清空输入和结果
 			m.textInput.SetValue("")
 			m.result = ""
+			m.errMsg = ""
 			return m, nil
+
 		case tea.KeyCtrlT:
-			// Ctrl+T: 切换语言
 			m.langIndex = (m.langIndex + 1) % len(supportedLangs)
 			m.targetLang = supportedLangs[m.langIndex]
 			return m, nil
+
 		case tea.KeyEsc:
 			return m, tea.Quit
 		}
@@ -97,6 +134,23 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m, cmd
 }
 
+func (m model) doTranslate(text, toLang string) tea.Cmd {
+	return func() tea.Msg {
+		result, err := m.translator.Translate(
+			context.Background(),
+			text,
+			&translator.TranslateOptions{
+				ToLang:     toLang,
+				PromptName: "simple",
+			},
+		)
+		if err != nil {
+			return translateMsg{err: err}
+		}
+		return translateMsg{result: result.Translated}
+	}
+}
+
 func (m model) View() string {
 	resultBox := m.renderResult()
 	helpText := helpStyle.Render("\n  " +
@@ -116,6 +170,12 @@ func (m model) View() string {
 }
 
 func (m model) renderResult() string {
+	if m.loading {
+		return "  " + loadingStyle.Render("正在翻译...") + "\n"
+	}
+	if m.errMsg != "" {
+		return "  " + errorStyle.Render("错误: "+m.errMsg) + "\n"
+	}
 	if m.result == "" {
 		return "  " + helpStyle.Render("翻译结果将显示在这里...") + "\n"
 	}