config

type AIConfig struct {
	// OpenAI API key
	APIKey string `koanf:"api_key"`
	// Model to use for AI SQL generation (default: gpt-4o)
	Model string `koanf:"model"`
	// MaxTokens is the maximum number of tokens to generate (default: 1024)
	MaxTokens int `koanf:"max_tokens"`
	// Temperature controls randomness in generation (0.0-1.0, default: 0.1)
	Temperature float32 `koanf:"temperature"`
	// Enabled indicates whether AI features are enabled
	Enabled bool `koanf:"enabled"`
	// BaseURL for OpenAI API (default: "", which uses the standard OpenAI API endpoint)
	BaseURL string `koanf:"base_url"`
}

type AlertsConfig struct {
	Enabled               bool          `koanf:"enabled"`
	EvaluationInterval    time.Duration `koanf:"evaluation_interval"`
	DefaultLookback       time.Duration `koanf:"default_lookback"`
	HistoryLimit          int           `koanf:"history_limit"`
	AlertmanagerURL       string        `koanf:"alertmanager_url"`
	ExternalURL           string        `koanf:"external_url"` // Backend URL (for API access)
	FrontendURL           string        `koanf:"frontend_url"` // Frontend URL (for web UI links)
	RequestTimeout        time.Duration `koanf:"request_timeout"`
	TLSInsecureSkipVerify bool          `koanf:"tls_insecure_skip_verify"`
}

type AuthConfig struct {
	AdminEmails           []string      `koanf:"admin_emails"`
	SessionDuration       time.Duration `koanf:"session_duration"`
	MaxConcurrentSessions int           `koanf:"max_concurrent_sessions"`
	APITokenSecret        string        `koanf:"api_token_secret"`
	DefaultTokenExpiry    time.Duration `koanf:"default_token_expiry"`
}

type ClickhouseConfig struct {
	Host     string `koanf:"host"`
	Port     int    `koanf:"port"`
	Database string `koanf:"database"`
	Username string `koanf:"username"`
	Password string `koanf:"password"`
}

type Config struct {
	Server     ServerConfig     `koanf:"server"`
	SQLite     SQLiteConfig     `koanf:"sqlite"`
	Clickhouse ClickhouseConfig `koanf:"clickhouse"`
	OIDC       OIDCConfig       `koanf:"oidc"`
	Auth       AuthConfig       `koanf:"auth"`
	Logging    LoggingConfig    `koanf:"logging"`
	AI         AIConfig         `koanf:"ai"`
	Alerts     AlertsConfig     `koanf:"alerts"`
}

type LoggingConfig struct {
	// Level sets the minimum log level (debug, info, warn, error)
	Level string `koanf:"level"`
}

type OIDCConfig struct {
	// Provider URL for OIDC discovery
	ProviderURL string `koanf:"provider_url"` // Base URL for OIDC provider discovery
	// Different endpoints for OIDC flow
	AuthURL  string `koanf:"auth_url"`  // URL for browser auth redirects
	TokenURL string `koanf:"token_url"` // URL for token exchange (server-to-server)

	ClientID     string   `koanf:"client_id"`
	ClientSecret string   `koanf:"client_secret"`
	RedirectURL  string   `koanf:"redirect_url"`
	Scopes       []string `koanf:"scopes"`
}

type SQLiteConfig struct {
	Path string `koanf:"path"`
}

type ServerConfig struct {
	Port              int           `koanf:"port"`
	Host              string        `koanf:"host"`
	FrontendURL       string        `koanf:"frontend_url"`
	HTTPServerTimeout time.Duration `koanf:"http_server_timeout"`
}

type SettingsStore interface {
	GetSettingWithDefault(ctx context.Context, key, defaultValue string) string
	GetBoolSetting(ctx context.Context, key string, defaultValue bool) bool
	GetIntSetting(ctx context.Context, key string, defaultValue int) int
	GetFloat64Setting(ctx context.Context, key string, defaultValue float64) float64
	GetDurationSetting(ctx context.Context, key string, defaultValue time.Duration) time.Duration
}