feat: add htsy CLI tool for Haitun private domain API

config.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+const (
+	configDirName  = ".htsy"
+	configFileName = "config.json"
+	defaultBaseURL = "https://htsy-gateway.cpshelp.cn"
+)
+
+type Config struct {
+	BaseURL   string    `json:"baseUrl,omitempty"`
+	Token     string    `json:"token,omitempty"`
+	Username  string    `json:"username,omitempty"`
+	LoginKind string    `json:"loginKind,omitempty"`
+	UpdatedAt time.Time `json:"updatedAt,omitempty"`
+}
+
+func defaultConfigPath() (string, error) {
+	if value := os.Getenv("HTSY_CONFIG"); value != "" {
+		return value, nil
+	}
+
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", fmt.Errorf("resolve home directory: %w", err)
+	}
+
+	return filepath.Join(home, configDirName, configFileName), nil
+}
+
+func resolveConfigPath(path string) (string, error) {
+	if path != "" {
+		return path, nil
+	}
+	return defaultConfigPath()
+}
+
+func loadConfig(path string) (Config, error) {
+	resolved, err := resolveConfigPath(path)
+	if err != nil {
+		return Config{}, err
+	}
+
+	data, err := os.ReadFile(resolved)
+	if errors.Is(err, os.ErrNotExist) {
+		return Config{BaseURL: defaultBaseURL}, nil
+	}
+	if err != nil {
+		return Config{}, fmt.Errorf("read config %s: %w", resolved, err)
+	}
+
+	var cfg Config
+	if err := json.Unmarshal(data, &cfg); err != nil {
+		return Config{}, fmt.Errorf("parse config %s: %w", resolved, err)
+	}
+	if cfg.BaseURL == "" {
+		cfg.BaseURL = defaultBaseURL
+	}
+
+	return cfg, nil
+}
+
+func saveConfig(path string, cfg Config) error {
+	resolved, err := resolveConfigPath(path)
+	if err != nil {
+		return err
+	}
+
+	if cfg.BaseURL == "" {
+		cfg.BaseURL = defaultBaseURL
+	}
+	cfg.UpdatedAt = time.Now().UTC()
+
+	dir := filepath.Dir(resolved)
+	if err := os.MkdirAll(dir, 0o700); err != nil {
+		return fmt.Errorf("create config dir %s: %w", dir, err)
+	}
+
+	data, err := json.MarshalIndent(cfg, "", "  ")
+	if err != nil {
+		return fmt.Errorf("encode config: %w", err)
+	}
+	data = append(data, '\n')
+
+	if err := os.WriteFile(resolved, data, 0o600); err != nil {
+		return fmt.Errorf("write config %s: %w", resolved, err)
+	}
+
+	return nil
+}
+
+func clearLogin(path string) error {
+	cfg, err := loadConfig(path)
+	if err != nil {
+		return err
+	}
+	cfg.Token = ""
+	cfg.Username = ""
+	cfg.LoginKind = ""
+	return saveConfig(path, cfg)
+}