完成
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315
golang-learning/10-projects/02-todo-list/ui/cli.go
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315
golang-learning/10-projects/02-todo-list/ui/cli.go
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/*
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cli.go - 命令行界面
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实现了彩色的命令行用户界面
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*/
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package ui
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import (
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"fmt"
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"os"
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"os/exec"
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"runtime"
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"strings"
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"../todo"
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)
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// CLI 命令行界面
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type CLI struct {
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colors *Colors
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}
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// NewCLI 创建新的命令行界面
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func NewCLI() *CLI {
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return &CLI{
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colors: NewColors(),
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}
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}
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// ShowWelcome 显示欢迎信息
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func (c *CLI) ShowWelcome() {
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c.Clear()
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fmt.Println(c.colors.Cyan("=== 待办事项管理器 ==="))
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fmt.Println()
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fmt.Println("📝 一个简单而强大的待办事项管理工具")
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fmt.Println()
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c.ShowHelp()
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}
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// ShowHelp 显示帮助信息
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func (c *CLI) ShowHelp() {
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fmt.Println(c.colors.Yellow("命令列表:"))
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fmt.Println(" " + c.colors.Green("add <任务>") + " - 添加新任务")
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fmt.Println(" " + c.colors.Green("list [状态]") + " - 显示任务列表 (all/done/pending)")
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fmt.Println(" " + c.colors.Green("done <ID>") + " - 标记任务完成")
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fmt.Println(" " + c.colors.Green("delete <ID>") + " - 删除任务")
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fmt.Println(" " + c.colors.Green("edit <ID> <新内容>") + " - 编辑任务")
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fmt.Println(" " + c.colors.Green("search <关键词>") + " - 搜索任务")
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fmt.Println(" " + c.colors.Green("stats") + " - 显示统计信息")
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fmt.Println(" " + c.colors.Green("clear") + " - 清屏")
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fmt.Println(" " + c.colors.Green("help") + " - 显示帮助")
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fmt.Println(" " + c.colors.Green("quit") + " - 退出程序")
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fmt.Println()
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}
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// ShowTaskList 显示任务列表
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func (c *CLI) ShowTaskList(tasks []todo.Task) {
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if len(tasks) == 0 {
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c.ShowInfo("暂无任务")
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return
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}
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fmt.Println(c.colors.Cyan("📋 待办事项列表:"))
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for _, task := range tasks {
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c.showTask(task)
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}
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fmt.Println()
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}
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// showTask 显示单个任务
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func (c *CLI) showTask(task todo.Task) {
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var status, statusColor string
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if task.Completed {
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status = "✅"
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statusColor = "green"
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} else {
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status = "⏳"
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statusColor = "yellow"
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}
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// 根据优先级选择颜色
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var priorityColor string
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switch task.Priority {
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case todo.Urgent:
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priorityColor = "red"
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case todo.High:
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priorityColor = "magenta"
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case todo.Medium:
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priorityColor = "blue"
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case todo.Low:
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priorityColor = "cyan"
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default:
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priorityColor = "white"
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}
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// 格式化任务内容
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content := task.Content
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if len(content) > 50 {
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content = content[:47] + "..."
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}
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// 显示任务
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fmt.Printf(" [%s] %s %s %s\n",
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c.colors.Blue(fmt.Sprintf("%d", task.ID)),
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c.colorize(status, statusColor),
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c.colorize(content, "white"),
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c.colorize(fmt.Sprintf("(优先级: %s)", task.Priority), priorityColor))
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// 显示标签
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if len(task.Tags) > 0 {
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fmt.Printf(" %s %s\n",
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c.colors.Gray("标签:"),
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c.colors.Cyan(strings.Join(task.Tags, ", ")))
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}
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// 显示描述
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if task.Description != "" {
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desc := task.Description
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if len(desc) > 60 {
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desc = desc[:57] + "..."
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}
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fmt.Printf(" %s %s\n",
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c.colors.Gray("描述:"),
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c.colors.White(desc))
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}
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}
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// ShowStatistics 显示统计信息
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func (c *CLI) ShowStatistics(stats todo.Statistics) {
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fmt.Println(c.colors.Cyan("📊 统计信息:"))
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fmt.Printf(" 总任务数: %s\n", c.colors.Blue(fmt.Sprintf("%d", stats.Total)))
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fmt.Printf(" 已完成: %s\n", c.colors.Green(fmt.Sprintf("%d", stats.Completed)))
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fmt.Printf(" 待完成: %s\n", c.colors.Yellow(fmt.Sprintf("%d", stats.Pending)))
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fmt.Printf(" 完成率: %s\n", c.colors.Magenta(fmt.Sprintf("%.1f%%", stats.CompletionRate)))
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if len(stats.ByPriority) > 0 {
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fmt.Println()
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fmt.Println(c.colors.Yellow("按优先级统计:"))
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for priority, count := range stats.ByPriority {
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var color string
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switch priority {
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case "紧急":
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color = "red"
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case "高":
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color = "magenta"
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case "中":
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color = "blue"
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case "低":
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color = "cyan"
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default:
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color = "white"
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}
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fmt.Printf(" %s: %s\n",
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c.colorize(priority, color),
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c.colors.White(fmt.Sprintf("%d", count)))
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}
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}
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if stats.AverageCompletionTime > 0 {
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fmt.Printf("\n 平均完成时间: %s\n",
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c.colors.Cyan(stats.AverageCompletionTime.String()))
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}
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fmt.Println()
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}
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// ShowSuccess 显示成功消息
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func (c *CLI) ShowSuccess(message string) {
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fmt.Printf("%s %s\n", c.colors.Green("✅"), message)
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}
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// ShowError 显示错误消息
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func (c *CLI) ShowError(message string) {
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fmt.Printf("%s %s\n", c.colors.Red("❌"), c.colors.Red(message))
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}
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// ShowWarning 显示警告消息
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func (c *CLI) ShowWarning(message string) {
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fmt.Printf("%s %s\n", c.colors.Yellow("⚠️"), c.colors.Yellow(message))
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}
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// ShowInfo 显示信息消息
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func (c *CLI) ShowInfo(message string) {
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fmt.Printf("%s %s\n", c.colors.Blue("ℹ️"), message)
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}
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// Clear 清屏
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func (c *CLI) Clear() {
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var cmd *exec.Cmd
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switch runtime.GOOS {
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case "windows":
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cmd = exec.Command("cmd", "/c", "cls")
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default:
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cmd = exec.Command("clear")
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}
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cmd.Stdout = os.Stdout
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cmd.Run()
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}
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// colorize 根据颜色名称着色文本
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func (c *CLI) colorize(text, color string) string {
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switch strings.ToLower(color) {
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case "red":
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return c.colors.Red(text)
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case "green":
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return c.colors.Green(text)
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case "yellow":
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return c.colors.Yellow(text)
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case "blue":
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return c.colors.Blue(text)
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case "magenta":
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return c.colors.Magenta(text)
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case "cyan":
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return c.colors.Cyan(text)
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case "white":
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return c.colors.White(text)
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case "gray":
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return c.colors.Gray(text)
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default:
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return text
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}
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}
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// ShowTaskDetail 显示任务详细信息
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func (c *CLI) ShowTaskDetail(task todo.Task) {
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fmt.Println(c.colors.Cyan("📋 任务详情:"))
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fmt.Println(c.colors.Gray("─────────────────────────────────────"))
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fmt.Printf("ID: %s\n", c.colors.Blue(fmt.Sprintf("%d", task.ID)))
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fmt.Printf("内容: %s\n", c.colors.White(task.Content))
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if task.Completed {
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fmt.Printf("状态: %s\n", c.colors.Green("✅ 已完成"))
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} else {
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fmt.Printf("状态: %s\n", c.colors.Yellow("⏳ 待完成"))
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}
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var priorityColor string
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switch task.Priority {
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case todo.Urgent:
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priorityColor = "red"
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case todo.High:
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priorityColor = "magenta"
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case todo.Medium:
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priorityColor = "blue"
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case todo.Low:
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priorityColor = "cyan"
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}
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fmt.Printf("优先级: %s\n", c.colorize(task.Priority.String(), priorityColor))
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fmt.Printf("创建时间: %s\n", c.colors.Gray(task.CreatedAt.Format("2006-01-02 15:04:05")))
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fmt.Printf("更新时间: %s\n", c.colors.Gray(task.UpdatedAt.Format("2006-01-02 15:04:05")))
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if task.Completed && task.CompletedAt != nil {
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fmt.Printf("完成时间: %s\n", c.colors.Green(task.CompletedAt.Format("2006-01-02 15:04:05")))
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fmt.Printf("完成耗时: %s\n", c.colors.Cyan(task.CompletionTime().String()))
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}
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if task.Description != "" {
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fmt.Printf("描述: %s\n", c.colors.White(task.Description))
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}
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if len(task.Tags) > 0 {
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fmt.Printf("标签: %s\n", c.colors.Cyan(strings.Join(task.Tags, ", ")))
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}
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fmt.Println(c.colors.Gray("─────────────────────────────────────"))
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fmt.Println()
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}
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// ShowProgress 显示进度条
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func (c *CLI) ShowProgress(current, total int, label string) {
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if total == 0 {
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return
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}
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percentage := float64(current) / float64(total) * 100
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barLength := 30
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filledLength := int(float64(barLength) * float64(current) / float64(total))
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bar := strings.Repeat("█", filledLength) + strings.Repeat("░", barLength-filledLength)
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fmt.Printf("\r%s [%s] %.1f%% (%d/%d)",
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label,
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c.colors.Green(bar),
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percentage,
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current,
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total)
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}
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// ConfirmAction 确认操作
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func (c *CLI) ConfirmAction(message string) bool {
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fmt.Printf("%s %s (y/N): ", c.colors.Yellow("❓"), message)
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var response string
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fmt.Scanln(&response)
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response = strings.ToLower(strings.TrimSpace(response))
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return response == "y" || response == "yes"
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}
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// ShowBanner 显示横幅
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func (c *CLI) ShowBanner(text string) {
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length := len(text) + 4
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border := strings.Repeat("=", length)
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fmt.Println(c.colors.Cyan(border))
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fmt.Printf("%s %s %s\n",
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c.colors.Cyan("="),
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c.colors.White(text),
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c.colors.Cyan("="))
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fmt.Println(c.colors.Cyan(border))
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fmt.Println()
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}
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