Initial commit: Gitea Project Management System

Features:
- Complete project management system with Epic/Story/Task hierarchy
- Vue.js 3 + Element Plus frontend with kanban board
- Go backend with Gin framework and GORM
- OAuth2 integration with Gitea
- Docker containerization with MySQL
- RESTful API for project, task, and user management
- JWT authentication and authorization
- Responsive web interface with dashboard

config/config.go

@@ -0,0 +1,102 @@
+package config
+
+import (
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	Server   ServerConfig   `mapstructure:"server"`
+	Database DatabaseConfig `mapstructure:"database"`
+	Gitea    GiteaConfig    `mapstructure:"gitea"`
+	JWT      JWTConfig      `mapstructure:"jwt"`
+	CORS     CORSConfig     `mapstructure:"cors"`
+}
+
+type ServerConfig struct {
+	Host string `mapstructure:"host"`
+	Port int    `mapstructure:"port"`
+	Mode string `mapstructure:"mode"`
+}
+
+type DatabaseConfig struct {
+	Driver   string `mapstructure:"driver"`
+	Host     string `mapstructure:"host"`
+	Port     int    `mapstructure:"port"`
+	Database string `mapstructure:"database"`
+	Username string `mapstructure:"username"`
+	Password string `mapstructure:"password"`
+	Charset  string `mapstructure:"charset"`
+}
+
+type GiteaConfig struct {
+	BaseURL      string `mapstructure:"base_url"`
+	ClientID     string `mapstructure:"client_id"`
+	ClientSecret string `mapstructure:"client_secret"`
+	RedirectURL  string `mapstructure:"redirect_url"`
+	WebhookSecret string `mapstructure:"webhook_secret"`
+}
+
+type JWTConfig struct {
+	Secret     string `mapstructure:"secret"`
+	ExpireHour int    `mapstructure:"expire_hour"`
+}
+
+type CORSConfig struct {
+	AllowOrigins     []string `mapstructure:"allow_origins"`
+	AllowMethods     []string `mapstructure:"allow_methods"`
+	AllowHeaders     []string `mapstructure:"allow_headers"`
+	AllowCredentials bool     `mapstructure:"allow_credentials"`
+}
+
+func Load(configPath string) (*Config, error) {
+	viper.SetConfigFile(configPath)
+	viper.SetConfigType("yaml")
+
+	// 启用环境变量
+	viper.AutomaticEnv()
+	viper.SetEnvPrefix("") // 不使用前缀
+
+	viper.SetDefault("server.host", "localhost")
+	viper.SetDefault("server.port", 8080)
+	viper.SetDefault("server.mode", "debug")
+	
+	viper.SetDefault("database.driver", "mysql")
+	viper.SetDefault("database.host", "localhost")
+	viper.SetDefault("database.port", 3306)
+	viper.SetDefault("database.charset", "utf8mb4")
+	
+	viper.SetDefault("jwt.expire_hour", 24)
+	
+	viper.SetDefault("cors.allow_origins", []string{"*"})
+	viper.SetDefault("cors.allow_methods", []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"})
+	viper.SetDefault("cors.allow_headers", []string{"*"})
+	viper.SetDefault("cors.allow_credentials", true)
+
+	if err := viper.ReadInConfig(); err != nil {
+		return nil, err
+	}
+
+	var config Config
+	if err := viper.Unmarshal(&config); err != nil {
+		return nil, err
+	}
+
+	// 覆盖数据库配置（如果环境变量存在）
+	if host := viper.GetString("DB_HOST"); host != "" {
+		config.Database.Host = host
+	}
+	if port := viper.GetInt("DB_PORT"); port != 0 {
+		config.Database.Port = port
+	}
+	if user := viper.GetString("DB_USER"); user != "" {
+		config.Database.Username = user
+	}
+	if password := viper.GetString("DB_PASSWORD"); password != "" {
+		config.Database.Password = password
+	}
+	if database := viper.GetString("DB_NAME"); database != "" {
+		config.Database.Database = database
+	}
+
+	return &config, nil
+}