// Package routing holds the per-user routing profile (可配置分流): the rule
// model, persistence (Store), and — in later tasks — validation and sing-box
// config rendering.
package routing

// Rule is a single user-authored routing rule (domain/IP/geosite match →
// proxy/direct action). Validation of Type/Action/Value lives in Task 2.
type Rule struct {
	Type    string `json:"type"`
	Value   string `json:"value"`
	Action  string `json:"action"`
	Note    string `json:"note,omitempty"`
	Enabled bool   `json:"enabled"`
}

// Builtin toggles the built-in routing behaviors that previously were
// hardcoded into the server's sing-box config rendering.
type Builtin struct {
	ChinaDirect      bool `json:"china_direct"`
	LanDirect        bool `json:"lan_direct"`
	PrivateViaTunnel bool `json:"private_via_tunnel"`
}

// Profile is a user's full routing configuration, persisted as JSON in
// routing_profiles.profile_json.
type Profile struct {
	Mode    string  `json:"mode"` // rule | global | direct
	Builtin Builtin `json:"builtin"`
	Rules   []Rule  `json:"rules"`
	Final   string  `json:"final"` // proxy | direct
}

// Default is the fail-safe fallback profile, equivalent to today's hardcoded
// behavior (smart routing + China direct + no user rules).
func Default() *Profile {
	return &Profile{
		Mode:    "rule",
		Builtin: Builtin{ChinaDirect: true, LanDirect: true, PrivateViaTunnel: true},
		Rules:   []Rule{},
		Final:   "proxy",
	}
}