feat: add interactive config setup on first start, install scripts, and uninstall cleanup

pkg/config/config.go

@@ -19,7 +19,7 @@ type Config struct {
 
 func DefaultConfig() *Config {
 	return &Config{
-		TargetIP:             "192.168.3.3",
+		TargetIP:             "192.168.3.1",
 		MonitorWindowSeconds: 180,
 		ShutdownCountdown:    60,
 		NormalPingInterval:   15,

pkg/config/interactive.go

@@ -0,0 +1,124 @@
+package config
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// ConfigFileExists checks if the config.json file exists at the expected location.
+func ConfigFileExists() bool {
+	configPath := filepath.Join(GetConfigDir(), "config.json")
+	_, err := os.Stat(configPath)
+	return err == nil
+}
+
+// isTerminal checks if stdin is connected to a terminal (not a pipe).
+func isTerminal() bool {
+	fi, err := os.Stdin.Stat()
+	if err != nil {
+		return false
+	}
+	return fi.Mode()&os.ModeCharDevice != 0
+}
+
+// InteractiveSetup prompts the user to configure each parameter interactively.
+// If stdin is not a terminal (pipe mode), it silently saves and returns defaults.
+func InteractiveSetup() (*Config, error) {
+	cfg := DefaultConfig()
+
+	if !isTerminal() {
+		if err := SaveConfig(cfg); err != nil {
+			return nil, fmt.Errorf("写入默认配置失败: %v", err)
+		}
+		return cfg, nil
+	}
+
+	fmt.Println("\n========== 首次配置 ==========")
+	fmt.Println("未检测到配置文件，将引导您完成初始设置。直接按回车使用 [默认值]。")
+
+	scanner := bufio.NewScanner(os.Stdin)
+
+	cfg.TargetIP = promptString(scanner, "目标监控 IP 地址", cfg.TargetIP, func(s string) error {
+		if net.ParseIP(s) == nil {
+			return fmt.Errorf("非法 IP 地址: %s", s)
+		}
+		return nil
+	})
+
+	cfg.MonitorWindowSeconds = promptInt(scanner, "断网容忍超时时长 (秒)", cfg.MonitorWindowSeconds)
+	cfg.ShutdownCountdown = promptInt(scanner, "关机倒计时缓冲 (秒)", cfg.ShutdownCountdown)
+	cfg.NormalPingInterval = promptInt(scanner, "探测发包间隔 (秒)", cfg.NormalPingInterval)
+
+	if err := SaveConfig(cfg); err != nil {
+		return nil, fmt.Errorf("写入配置文件失败: %v", err)
+	}
+
+	configPath := filepath.Join(GetConfigDir(), "config.json")
+	fmt.Printf("\n配置已保存至: %s\n", configPath)
+	return cfg, nil
+}
+
+// ConfirmConfigCleanup prompts the user to confirm deletion of config and log files.
+// Returns true if the user confirms. Non-terminal stdin defaults to no.
+func ConfirmConfigCleanup() bool {
+	if !isTerminal() {
+		return false
+	}
+
+	configDir := GetConfigDir()
+	configPath := filepath.Join(configDir, "config.json")
+	if _, err := os.Stat(configPath); err != nil {
+		return false
+	}
+
+	fmt.Printf("检测到配置文件: %s\n是否一并清除配置文件与日志？[y/N]: ", configDir)
+	scanner := bufio.NewScanner(os.Stdin)
+	if scanner.Scan() {
+		return strings.EqualFold(strings.TrimSpace(scanner.Text()), "y")
+	}
+	return false
+}
+
+func promptString(scanner *bufio.Scanner, label, defaultVal string, validate func(string) error) string {
+	for {
+		fmt.Printf("\n%s [%s]: ", label, defaultVal)
+		if !scanner.Scan() {
+			return defaultVal
+		}
+		input := strings.TrimSpace(scanner.Text())
+		if input == "" {
+			return defaultVal
+		}
+		if validate != nil {
+			if err := validate(input); err != nil {
+				fmt.Printf("  输入无效: %v，请重新输入。\n", err)
+				continue
+			}
+		}
+		return input
+	}
+}
+
+func promptInt(scanner *bufio.Scanner, label string, defaultVal int) int {
+	for {
+		fmt.Printf("%s [%d]: ", label, defaultVal)
+		if !scanner.Scan() {
+			return defaultVal
+		}
+		input := strings.TrimSpace(scanner.Text())
+		if input == "" {
+			return defaultVal
+		}
+		val, err := strconv.Atoi(input)
+		if err != nil || val <= 0 {
+			fmt.Println("  输入无效: 必须为正整数，请重新输入。")
+			continue
+		}
+		return val
+	}
+}