package dhcp

import "time"

// DHCPServerInstance represents an interface-bound DHCP server (/ip dhcp-server)
type DHCPServerInstance struct {
	ID            string `json:"id"`
	Name          string `json:"name"`           // e.g. "dhcp1", "defconf"
	Interface     string `json:"interface"`      // e.g. "bridge1", "eth0"
	LeaseTime     string `json:"lease_time"`     // e.g. "12h", "1d", "30m"
	AddressPool   string `json:"address_pool"`   // e.g. "192.168.88.10-192.168.88.254"
	Authoritative bool   `json:"authoritative"`  // default true
	Disabled      bool   `json:"disabled"`       // MikroTik 'X' flag
	Comment       string `json:"comment,omitempty"`

	// Runtime telemetry
	Running      bool `json:"running"`
	ActiveLeases int  `json:"active_leases"`
}

// DHCPNetwork defines options and gateway for a specific subnet (/ip dhcp-server network)
type DHCPNetwork struct {
	ID           string   `json:"id"`
	Address      string   `json:"address"`       // CIDR e.g. "192.168.88.0/24"
	Gateway      string   `json:"gateway"`       // Option 3 (Router IP)
	Netmask      string   `json:"netmask"`       // Netmask e.g. "255.255.255.0" or "24"
	DNSServers   []string `json:"dns_servers"`   // Option 6
	Domain       string   `json:"domain"`        // Option 15
	NTPServers   []string `json:"ntp_servers"`   // Option 42 (requested by user)
	NextServer   string   `json:"next_server"`   // Option 66 / TFTP server IP/hostname (requested by user)
	BootFileName string   `json:"boot_file_name"`// Option 67 / PXE boot filename
	WINSServers  []string `json:"wins_servers"`  // Option 44
	DHCPOptions  []string `json:"dhcp_options"`  // Linked custom option IDs
	Comment      string   `json:"comment,omitempty"`
}

// DHCPLease represents an active dynamic lease or static reservation (/ip dhcp-server lease)
type DHCPLease struct {
	ID         string    `json:"id"`
	Address    string    `json:"address"`     // Assigned IP
	MACAddress string    `json:"mac_address"` // Format "aa:bb:cc:dd:ee:ff"
	ClientID   string    `json:"client_id,omitempty"`
	Server     string    `json:"server"`      // Server name or "all"
	HostName   string    `json:"hostname"`
	ExpiresIn  string    `json:"expires_in"`  // e.g. "11h 45m" or "never"
	ExpiresAt  time.Time `json:"expires_at"`
	Dynamic    bool      `json:"dynamic"`     // true=from dnsmasq.leases, false=static reservation
	Status     string    `json:"status"`      // "bound", "static", "waiting"
	Disabled   bool      `json:"disabled"`
	Comment    string    `json:"comment,omitempty"`
}

// DHCPOption represents a raw or typed custom DHCP option (/ip dhcp-server option)
type DHCPOption struct {
	ID      string `json:"id"`
	Name    string `json:"name"`    // e.g. "unifi-controller", "voip-tftp"
	Code    int    `json:"code"`    // Option code (1 - 254)
	Value   string `json:"value"`   // Raw IP, text, hex or option string
	Comment string `json:"comment,omitempty"`
}

// DHCPServerSummary provides aggregated statistics for KPI cards & sidebar badges
type DHCPServerSummary struct {
	TotalServers  int `json:"total_servers"`
	ActiveServers int `json:"active_servers"`
	TotalNetworks int `json:"total_networks"`
	ActiveLeases  int `json:"active_leases"`
	StaticLeases  int `json:"static_leases"`
	TotalOptions  int `json:"total_options"`
}

// DHCPServerConfigStore wraps JSON persistence
type DHCPServerConfigStore struct {
	Servers      []DHCPServerInstance `json:"servers"`
	Networks     []DHCPNetwork        `json:"networks"`
	StaticLeases []DHCPLease          `json:"static_leases"`
	Options      []DHCPOption         `json:"options"`
}

// DHCPServerSetupRequest is used by the MikroTik-style 1-click DHCP Setup Wizard
type DHCPServerSetupRequest struct {
	Interface    string   `json:"interface"`               // e.g. "bridge1"
	AddressSpace string   `json:"address_space"`           // e.g. "192.168.88.0/24"
	Gateway      string   `json:"gateway"`                 // e.g. "192.168.88.1"
	AddressPool  string   `json:"address_pool"`            // e.g. "192.168.88.10-192.168.88.254"
	DNSServers   []string `json:"dns_servers"`             // e.g. ["192.168.88.1", "1.1.1.1"]
	LeaseTime    string   `json:"lease_time"`              // e.g. "12h"
	Domain       string   `json:"domain,omitempty"`        // e.g. "lan"
	NTPServers   []string `json:"ntp_servers,omitempty"`   // e.g. ["192.168.88.1"]
	NextServer   string   `json:"next_server,omitempty"`   // e.g. "192.168.88.50"
	BootFileName string   `json:"boot_file_name,omitempty"`// e.g. "pxelinux.0"
}