新增: 壁纸切换（主题/本地图片/Bing/纯色渐变）

config.go

@@ -8,32 +8,80 @@ import (
 	"image/color"
 	"image/png"
 	"os"
+	"path/filepath"
+)
+
+type WallpaperType string
+
+const (
+	WPTheme WallpaperType = "theme"
+	WPImage WallpaperType = "image"
+	WPBing  WallpaperType = "bing"
+	WPColor WallpaperType = "color"
+)
+
+type ThemeName string
+
+const (
+	ThemeAurora   ThemeName = "aurora"
+	ThemeStar     ThemeName = "starfield"
+	ThemeGradient ThemeName = "gradient"
+	ThemeParticle ThemeName = "particles"
 )
 
 type Config struct {
-	Zodiac string `json:"zodiac"`
-	City   string `json:"city"`
+	Zodiac        string        `json:"zodiac"`
+	City          string        `json:"city"`
+	WallpaperType WallpaperType `json:"wallpaperType"`
+	Theme         ThemeName     `json:"theme"`
+	ImagePath     string        `json:"imagePath"`
+	Color1        string        `json:"color1"`
+	Color2        string        `json:"color2"`
+	ColorGradient bool          `json:"colorGradient"`
 }
 
 const defaultZodiac = "射手座"
 
 var configPath string
 
+func configDir() string {
+	return filepath.Dir(configPath)
+}
+
 func loadConfig() *Config {
 	data, err := os.ReadFile(configPath)
 	if err != nil {
-		return &Config{Zodiac: defaultZodiac}
+		return defaultConfig()
 	}
 	var cfg Config
 	if json.Unmarshal(data, &cfg) != nil {
-		return &Config{Zodiac: defaultZodiac}
+		return defaultConfig()
 	}
 	if cfg.Zodiac == "" {
 		cfg.Zodiac = defaultZodiac
 	}
+	if cfg.WallpaperType == "" {
+		cfg.WallpaperType = WPTheme
+	}
+	if cfg.Theme == "" {
+		cfg.Theme = ThemeAurora
+	}
+	if cfg.Color1 == "" {
+		cfg.Color1 = "#1a1a2e"
+	}
 	return &cfg
 }
 
+func defaultConfig() *Config {
+	return &Config{
+		Zodiac:        defaultZodiac,
+		WallpaperType: WPTheme,
+		Theme:         ThemeAurora,
+		Color1:        "#1a1a2e",
+		Color2:        "#16213e",
+	}
+}
+
 func saveConfig(cfg *Config) error {
 	data, _ := json.MarshalIndent(cfg, "", "  ")
 	return os.WriteFile(configPath, data, 0644)