// Package agent implements `tomswall agent`: it pulls a device's compiled config
// from tomswallapi, differentially applies it, and reports the applied generation.
// It never fails closed — if the control plane is unreachable it keeps the last
// known-good config running.
package agent

// RenderedConfig is the per-device document served by tomswallapi at
// GET /api/v1/devices/{name}/config. It mirrors the control plane's compiler
// output: interface-agnostic, address-matched rules plus named sets.
type RenderedConfig struct {
	Generation   int64                 `yaml:"generation" json:"generation"`
	Device       string                `yaml:"device" json:"device"`
	Class        string                `yaml:"class" json:"class"`
	Enforcing    bool                  `yaml:"enforcing" json:"enforcing"`
	Settings     RenderedSettings      `yaml:"settings" json:"settings"`
	Resolver     []string              `yaml:"resolver,omitempty" json:"resolver,omitempty"`
	Bindings     map[string][]string   `yaml:"bindings,omitempty" json:"bindings,omitempty"` // zone -> interfaces
	Sets         []RenderedSet         `yaml:"sets,omitempty" json:"sets,omitempty"`
	Rules        []RenderedRule        `yaml:"rules,omitempty" json:"rules,omitempty"`
	Policies     []RenderedPolicy      `yaml:"policies,omitempty" json:"policies,omitempty"`
	SNAT         []RenderedSNAT        `yaml:"snat,omitempty" json:"snat,omitempty"`
	Netmap       []RenderedNetmap      `yaml:"netmap,omitempty" json:"netmap,omitempty"`
	NAT          []RenderedNAT         `yaml:"nat,omitempty" json:"nat,omitempty"`
	Hosts        []RenderedHost        `yaml:"hosts,omitempty" json:"hosts,omitempty"`
	Providers    []RenderedProvider    `yaml:"providers,omitempty" json:"providers,omitempty"`
	Routes       []RenderedRoute       `yaml:"routes,omitempty" json:"routes,omitempty"`
	RoutingRules []RenderedRoutingRule `yaml:"routing_rules,omitempty" json:"routing_rules,omitempty"`
	Tunnels      []RenderedTunnel      `yaml:"tunnels,omitempty" json:"tunnels,omitempty"`
	StoppedRules []RenderedStoppedRule `yaml:"stopped_rules,omitempty" json:"stopped_rules,omitempty"`
	ProxyARP     []RenderedProxy       `yaml:"proxy_arp,omitempty" json:"proxy_arp,omitempty"`
	ProxyNDP     []RenderedProxy       `yaml:"proxy_ndp,omitempty" json:"proxy_ndp,omitempty"`
	ArpRules     []RenderedArpRule     `yaml:"arp_rules,omitempty" json:"arp_rules,omitempty"`
	Maclist      []RenderedMaclist     `yaml:"maclist,omitempty" json:"maclist,omitempty"`
	Mangle       []RenderedMangle      `yaml:"mangle,omitempty" json:"mangle,omitempty"`
	Accounting   []RenderedAccounting  `yaml:"accounting,omitempty" json:"accounting,omitempty"`
	TCDevices    []RenderedTCDevice    `yaml:"tc_devices,omitempty" json:"tc_devices,omitempty"`
	TCClasses    []RenderedTCClass     `yaml:"tc_classes,omitempty" json:"tc_classes,omitempty"`
	TCFilters    []RenderedTCFilter    `yaml:"tc_filters,omitempty" json:"tc_filters,omitempty"`
	TCInterfaces []RenderedTCInterface `yaml:"tc_interfaces,omitempty" json:"tc_interfaces,omitempty"`
	TCPriorities []RenderedTCPriority  `yaml:"tc_priorities,omitempty" json:"tc_priorities,omitempty"`
	Blrules      []RenderedBlrule      `yaml:"blrules,omitempty" json:"blrules,omitempty"`
	Conntrack    []RenderedConntrack   `yaml:"conntrack,omitempty" json:"conntrack,omitempty"`
	Secmarks     []RenderedSecmark     `yaml:"secmarks,omitempty" json:"secmarks,omitempty"`
	Vars         map[string]string     `yaml:"vars,omitempty" json:"vars,omitempty"`
}

type RenderedBlrule struct {
	Priority int      `yaml:"priority,omitempty" json:"priority,omitempty"`
	Action   string   `yaml:"action" json:"action"`
	Source   string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest     string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto    string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort    []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort    []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Log      string   `yaml:"log,omitempty" json:"log,omitempty"`
	Comment  string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedConntrack struct {
	Action  string   `yaml:"action" json:"action"`
	Source  string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest    string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto   string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort   []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort   []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Chain   string   `yaml:"chain,omitempty" json:"chain,omitempty"`
	Helper  string   `yaml:"helper,omitempty" json:"helper,omitempty"`
	User    string   `yaml:"user,omitempty" json:"user,omitempty"`
	Comment string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedSecmark struct {
	Secmark string   `yaml:"secmark" json:"secmark"`
	Chain   string   `yaml:"chain" json:"chain"`
	Source  string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest    string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto   string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort   []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort   []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Comment string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedMangle struct {
	Action      string   `yaml:"action" json:"action"`
	Chain       string   `yaml:"chain,omitempty" json:"chain,omitempty"`
	MarkValue   string   `yaml:"mark_value,omitempty" json:"mark_value,omitempty"`
	Source      string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest        string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto       string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort       []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort       []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	User        string   `yaml:"user,omitempty" json:"user,omitempty"`
	Mark        string   `yaml:"mark,omitempty" json:"mark,omitempty"`
	Length      string   `yaml:"length,omitempty" json:"length,omitempty"`
	TOS         string   `yaml:"tos,omitempty" json:"tos,omitempty"`
	Helper      string   `yaml:"helper,omitempty" json:"helper,omitempty"`
	Probability *float64 `yaml:"probability,omitempty" json:"probability,omitempty"`
	Comment     string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedAccounting struct {
	Action  string   `yaml:"action" json:"action"`
	Section string   `yaml:"section,omitempty" json:"section,omitempty"`
	Chain   string   `yaml:"chain,omitempty" json:"chain,omitempty"`
	Source  string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest    string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto   string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort   []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort   []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Mark    string   `yaml:"mark,omitempty" json:"mark,omitempty"`
	Comment string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTCDevice struct {
	Interface    string `yaml:"interface" json:"interface"`
	InBandwidth  string `yaml:"in_bandwidth,omitempty" json:"in_bandwidth,omitempty"`
	OutBandwidth string `yaml:"out_bandwidth,omitempty" json:"out_bandwidth,omitempty"`
	Comment      string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTCClass struct {
	Interface string `yaml:"interface" json:"interface"`
	Mark      int    `yaml:"mark,omitempty" json:"mark,omitempty"`
	Rate      string `yaml:"rate,omitempty" json:"rate,omitempty"`
	Ceil      string `yaml:"ceil,omitempty" json:"ceil,omitempty"`
	Priority  int    `yaml:"priority,omitempty" json:"priority,omitempty"`
	Comment   string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTCFilter struct {
	Class    string   `yaml:"class" json:"class"`
	Source   string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest     string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto    string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort    []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort    []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	TOS      string   `yaml:"tos,omitempty" json:"tos,omitempty"`
	Length   int      `yaml:"length,omitempty" json:"length,omitempty"`
	Priority int      `yaml:"priority,omitempty" json:"priority,omitempty"`
	Comment  string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTCInterface struct {
	Interface    string `yaml:"interface" json:"interface"`
	Type         string `yaml:"type,omitempty" json:"type,omitempty"`
	InBandwidth  string `yaml:"in_bandwidth,omitempty" json:"in_bandwidth,omitempty"`
	OutBandwidth string `yaml:"out_bandwidth,omitempty" json:"out_bandwidth,omitempty"`
	Comment      string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTCPriority struct {
	Band      int      `yaml:"band" json:"band"`
	Proto     string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort     []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort     []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Address   string   `yaml:"address,omitempty" json:"address,omitempty"`
	Interface string   `yaml:"interface,omitempty" json:"interface,omitempty"`
	Helper    string   `yaml:"helper,omitempty" json:"helper,omitempty"`
	Comment   string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedTunnel struct {
	Type         string   `yaml:"type" json:"type"`
	Zone         string   `yaml:"zone" json:"zone"`
	Gateways     []string `yaml:"gateways,omitempty" json:"gateways,omitempty"`
	GatewayZones []string `yaml:"gateway_zones,omitempty" json:"gateway_zones,omitempty"`
	Port         int      `yaml:"port,omitempty" json:"port,omitempty"`
	Comment      string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedStoppedRule struct {
	Action  string   `yaml:"action" json:"action"`
	Source  string   `yaml:"source,omitempty" json:"source,omitempty"`
	Dest    string   `yaml:"dest,omitempty" json:"dest,omitempty"`
	Proto   string   `yaml:"proto,omitempty" json:"proto,omitempty"`
	DPort   []string `yaml:"dport,omitempty" json:"dport,omitempty"`
	SPort   []string `yaml:"sport,omitempty" json:"sport,omitempty"`
	Comment string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedProxy struct {
	Address    string `yaml:"address" json:"address"`
	Interface  string `yaml:"interface,omitempty" json:"interface,omitempty"`
	External   string `yaml:"external" json:"external"`
	HaveRoute  bool   `yaml:"haveroute,omitempty" json:"haveroute,omitempty"`
	Persistent bool   `yaml:"persistent,omitempty" json:"persistent,omitempty"`
	Comment    string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedArpRule struct {
	Action        string `yaml:"action" json:"action"`
	ActionAddress string `yaml:"action_address,omitempty" json:"action_address,omitempty"`
	ActionMAC     string `yaml:"action_mac,omitempty" json:"action_mac,omitempty"`
	Source        string `yaml:"source,omitempty" json:"source,omitempty"`
	Dest          string `yaml:"dest,omitempty" json:"dest,omitempty"`
	Opcode        int    `yaml:"opcode,omitempty" json:"opcode,omitempty"`
	Comment       string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedMaclist struct {
	Action    string   `yaml:"action" json:"action"`
	Interface string   `yaml:"interface" json:"interface"`
	MAC       string   `yaml:"mac,omitempty" json:"mac,omitempty"`
	Addresses []string `yaml:"addresses,omitempty" json:"addresses,omitempty"`
	Log       string   `yaml:"log,omitempty" json:"log,omitempty"`
	Comment   string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedHost struct {
	Zone       string   `yaml:"zone" json:"zone"`
	Interface  string   `yaml:"interface" json:"interface"`
	Addresses  []string `yaml:"addresses,omitempty" json:"addresses,omitempty"`
	Exclusions []string `yaml:"exclusions,omitempty" json:"exclusions,omitempty"`
	Dynamic    bool     `yaml:"dynamic,omitempty" json:"dynamic,omitempty"`
}

type RenderedProvider struct {
	Name      string   `yaml:"name" json:"name"`
	Number    int      `yaml:"number" json:"number"`
	Mark      int      `yaml:"mark,omitempty" json:"mark,omitempty"`
	Duplicate string   `yaml:"duplicate,omitempty" json:"duplicate,omitempty"`
	Interface string   `yaml:"interface" json:"interface"`
	Gateway   string   `yaml:"gateway,omitempty" json:"gateway,omitempty"`
	Copy      []string `yaml:"copy,omitempty" json:"copy,omitempty"`
}

type RenderedRoute struct {
	Provider   string `yaml:"provider,omitempty" json:"provider,omitempty"`
	Dest       string `yaml:"dest" json:"dest"`
	Gateway    string `yaml:"gateway,omitempty" json:"gateway,omitempty"`
	Oif        string `yaml:"oif,omitempty" json:"oif,omitempty"`
	Persistent bool   `yaml:"persistent,omitempty" json:"persistent,omitempty"`
	Comment    string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedRoutingRule struct {
	Source     string `yaml:"source,omitempty" json:"source,omitempty"`
	Dest       string `yaml:"dest,omitempty" json:"dest,omitempty"`
	Provider   string `yaml:"provider" json:"provider"`
	Priority   int    `yaml:"priority,omitempty" json:"priority,omitempty"`
	Persistent bool   `yaml:"persistent,omitempty" json:"persistent,omitempty"`
	Mark       string `yaml:"mark,omitempty" json:"mark,omitempty"`
	Comment    string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

// RenderedSNAT is a resolved SNAT/masquerade rule (egress carries interface names).
type RenderedSNAT struct {
	Action      string   `yaml:"action" json:"action"`
	Source      []string `yaml:"source,omitempty" json:"source,omitempty"`
	Egress      []string `yaml:"egress" json:"egress"`
	Address     string   `yaml:"address,omitempty" json:"address,omitempty"`
	Probability *float64 `yaml:"probability,omitempty" json:"probability,omitempty"`
	Comment     string   `yaml:"comment,omitempty" json:"comment,omitempty"`
}

// RenderedNetmap is a resolved network-to-network mapping on one interface.
type RenderedNetmap struct {
	Type      string `yaml:"type" json:"type"`
	FromNet   string `yaml:"from_net" json:"from_net"`
	ToNet     string `yaml:"to_net" json:"to_net"`
	Interface string `yaml:"interface,omitempty" json:"interface,omitempty"`
	Comment   string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

// RenderedNAT is a resolved one-to-one static NAT on one interface.
type RenderedNAT struct {
	External  string `yaml:"external" json:"external"`
	Internal  string `yaml:"internal" json:"internal"`
	Interface string `yaml:"interface,omitempty" json:"interface,omitempty"`
	Comment   string `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedSettings struct {
	AddressFamily string `yaml:"address_family" json:"address_family"`
	LogLevel      string `yaml:"log_level" json:"log_level"`
	IPForwarding  bool   `yaml:"ip_forwarding" json:"ip_forwarding"`
	TableName     string `yaml:"table_name" json:"table_name"`
}

// RenderedSet is an address group's nftables set. Members carries the concrete
// elements the control plane knows (static CIDRs, expanded ASN prefixes); FQDNs
// are resolved on-device; ASNs are informational (already expanded into Members).
type RenderedSet struct {
	Name    string   `yaml:"name" json:"name"`
	Kind    string   `yaml:"kind" json:"kind"` // static | dns | asn
	Members []string `yaml:"members,omitempty" json:"members,omitempty"`
	FQDNs   []string `yaml:"fqdns,omitempty" json:"fqdns,omitempty"`
	ASNs    []string `yaml:"asns,omitempty" json:"asns,omitempty"`
	Refresh string   `yaml:"refresh,omitempty" json:"refresh,omitempty"`
}

// RenderedMatch is one OR'd element of a rule direction: a zone's subnets AND,
// optionally, a named set to intersect with.
type RenderedMatch struct {
	Zone    string   `yaml:"zone" json:"zone"`
	Subnets []string `yaml:"subnets,omitempty" json:"subnets,omitempty"`
	Set     string   `yaml:"set,omitempty" json:"set,omitempty"`
}

type RenderedRule struct {
	Action  string          `yaml:"action" json:"action"`
	Source  []RenderedMatch `yaml:"source" json:"source"`
	Dest    []RenderedMatch `yaml:"dest" json:"dest"`
	Proto   string          `yaml:"proto,omitempty" json:"proto,omitempty"`
	Ports   []string        `yaml:"ports,omitempty" json:"ports,omitempty"`
	Log     string          `yaml:"log,omitempty" json:"log,omitempty"`
	Comment string          `yaml:"comment,omitempty" json:"comment,omitempty"`
}

type RenderedPolicy struct {
	Priority int    `yaml:"priority" json:"priority"`
	Source   string `yaml:"source" json:"source"`
	Dest     string `yaml:"dest" json:"dest"`
	Action   string `yaml:"action" json:"action"`
	Log      string `yaml:"log,omitempty" json:"log,omitempty"`
}

// setMembers returns the concrete address elements for a set: static/asn use
// Members; dns is resolved separately and merged in before translation.
func (s RenderedSet) staticMembers() []string { return s.Members }