package server

import (
	"errors"
	"time"
)

var (
	// ErrInvalidIP says that an IP address is malformed. The IP lookup returns
	// it.
	ErrInvalidIP = errors.New("invalid IP address")
	// ErrNoRoute says that the routing table has no route for an address, a
	// prefix or an AS. The lookups return it.
	ErrNoRoute = errors.New("no route found")
)

// LiveRoute represents a route in the live routing table. JSON leaves out an
// empty AS path, next hop or time: the routing table in memory keeps them only
// for the two newest routes of each prefix and origin AS.
//
//nolint:tagliatelle // field names are the existing JSON API
type LiveRoute struct {
	Prefix      string    `json:"prefix"`
	MaskLength  int       `json:"mask_length"`
	IPVersion   int       `json:"ip_version"`
	OriginASN   int       `json:"origin_asn"`
	PeerIP      string    `json:"peer_ip"`
	ASPath      []int     `json:"as_path,omitempty"`
	NextHop     string    `json:"next_hop,omitempty"`
	LastUpdated time.Time `json:"last_updated,omitzero"`
}

// PrefixDistribution represents the distribution of prefixes by mask length
//
//nolint:tagliatelle // field names are the existing JSON API
type PrefixDistribution struct {
	MaskLength int `json:"mask_length"`
	Count      int `json:"count"`
}

// IPInfo represents comprehensive IP information for the /ip endpoint
//
//nolint:tagliatelle // field names are the existing JSON API
type IPInfo struct {
	IP         string `json:"ip"`
	Netblock   string `json:"netblock"`
	MaskLength int    `json:"mask_length"`
	IPVersion  int    `json:"ip_version"`
	NumPeers   int    `json:"num_peers"`
	// AS information
	ASN         int    `json:"asn"`
	ASName      string `json:"as_name,omitempty"`
	Handle      string `json:"handle,omitempty"`
	Description string `json:"description,omitempty"`
	OrgName     string `json:"org_name,omitempty"`
	OrgID       string `json:"org_id,omitempty"`
	Address     string `json:"address,omitempty"`
	CountryCode string `json:"country_code,omitempty"`
	AbuseEmail  string `json:"abuse_email,omitempty"`
	RIR         string `json:"rir,omitempty"`
	// Timestamps. LastSeen is zero, and left out of JSON, when the prefix
	// keeps no route.
	FirstSeen time.Time `json:"first_seen"`
	LastSeen  time.Time `json:"last_seen,omitzero"`
	// Indicates if WHOIS data needs refresh (not serialized)
	NeedsWHOISRefresh bool `json:"-"`
}