package main

type Args struct {
	Version         bool            `short:"v" long:"version" description:"Print the version and exit."`
	DetailVersion   bool            `short:"V" long:"detail" description:"Print detailed version info and exit."`
	SplitCIDR       SplitCIDRArgs   `command:"split-cidr" alias:"se" description:"Split a network into as many equal subnets of prefix size N as possible." validate:"omitempty"`
	SplitHost       SplitHostArgs   `command:"split-hosts" alias:"sh" description:"Split a network into N total number of hosts *per subnet* as cleanly/evenly as possible. (VERY easy to run out of memory for IPv6 prefixes; be sure to specify very small network!)" validate:"omitempty"`
	SplitSubnets    SplitSubnetArgs `command:"split-nets" alias:"sn" description:"Split a network into N number of subnets as cleanly as possible." validate:"omitempty"`
	VLSM            VLSMArgs        `command:"vlsm" alias:"v" description:"Use VLSM (Variable-Length Subnet Masks) to split a network into differently sized subnets." validate:"omitempty"`
	ExplicitNetwork XNetArgs        `command:"net" alias:"n" description:"Print information about an explicit network address." validate:"omitempty"`
	Parse           ParseArgs       `command:"parse" alias:"p" alias:"read" alias:"convert" description:"Parse/convert output from a previous subnetter run." validate:"omitempty"`
	Table           TableArgs       `command:"table" alias:"t" alias:"tab" alias:"tbl" description:"Show prefix summaries (by default both IPv4 and IPv6)." validate:"omitempty"`
}

type outputOpts struct {
	SuppressRemaining bool   `short:"r" long:"no-remaining" description:"Don't show leftover/unallocated/remaining space.'"`
	Verbose           []bool `short:"v" long:"verbose" description:"Show verbose information if -f/--format=pretty. May be specified multiple times to increase verbosity (up to 3 levels)."`
	Plain             bool   `short:"p" long:"plain" description:"Show plain output instead of unicode (only used if -f/--format=pretty)."`
	Seperator         string `short:"S" long:"seperator" default:"\n" description:"Separator between addresses; only used for -f/--format=pretty with no verbosity."`
	Fmt               string `short:"f" long:"format" choice:"json" choice:"pretty" choice:"yml" choice:"xml" default:"pretty" description:"Output format. 'pretty' is not intended to be parseable, either by subnetter or by external tooling."`
}

type common struct {
	outputOpts
	AllowReserved bool `short:"R" long:"allow-reserved" description:"If specified, do not warn about reserved IP addresses/networks."`
	AllowHostNet  bool `short:"H" long:"allow-host" description:"If specified, do not warn about host bits. Host bits are always removed for subnetting (as otherwise there would be errors); this is only used only for output."`
	Network       Net  `positional-args:"yes" required:"true" description:"The network to be split/subnetted." validate:"required"`
}

type ParseArgs struct {
	outputOpts
	AllowReserved bool   `short:"R" long:"allow-reserved" description:"If specified, do not warn about reserved IP addresses/networks."`
	AllowHostNet  bool   `short:"H" long:"allow-host" description:"If specified, do not warn about host bits."`
	InFile        string `short:"i" long:"input" default:"-" description:"Input file to parse. Default is '-' (for STDIN)." required:"true" validate:"required,filepath|eq=-"`
}

type SplitCIDRArgs struct {
	Prefix uint8 `short:"s" long:"size" required:"true" description:"Prefix length/network size in bits (as CIDR number)." validate:"required"`
	common
}

type SplitHostArgs struct {
	Strict bool `short:"t" long:"strict" description:"If specified, an error will occur if the number of hosts/assignable addresses in a subnet is not exactly -n/--num-hosts."`
	Hosts  uint `short:"n" long:"num-hosts" required:"true" description:"Number of hosts (usable addresses) per subnet." validate:"required"`
	common
}

type SplitSubnetArgs struct {
	Strict  bool `short:"t" long:"strict" description:"If specified, an error will occur if the number of possible equally-sized subnets is not exactly -n/--num-nets."`
	NumNets uint `short:"n" long:"num-nets" required:"true" description:"Number of networks." validate:"required"`
	common
}

type TableArgs struct {
	tableOpts
}

type XNetArgs struct {
	Plain     bool   `short:"p" long:"plain" description:"Show plain output instead of unicode (only used if -f/--format=pretty)."`
	Seperator string `short:"S" long:"seperator" default:"\n" description:"Separator between addresses; only used for -f/--format=pretty with no verbosity."`
	Fmt       string `short:"f" long:"format" choice:"json" choice:"pretty" choice:"yml" choice:"xml" default:"pretty" description:"Output format. 'pretty' is not intended to be parseable, either by subnetter or by external tooling."`
	Verbose   []bool `short:"v" long:"verbose" description:"Show verbose information (if -n/--network is specified). May be specified multiple times to increase verbosity (up to 2 levels)."`
	Network   Net    `positional-args:"yes" required:"true" description:"The network address to print information about." validate:"required"`
}

type VLSMArgs struct {
	Asc   bool    `short:"a" long:"asc" description:"If specified, place smaller networks (larger prefixes) at the beginning. You almost assuredly do not want to do this."`
	Sizes []uint8 `short:"s" long:"size" required:"true" description:"Prefix lengths. May be specified multiple times." validate:"required"`
	common
}

type Net struct {
	Network string `positional-arg-name:"<network>/<prefix>" description:"Network address with prefix. Can be IPv4 or IPv6." validate:"required,cidr"`
}