const (
	// NS is the root namespace for etcd operations. All keys must use it!
	NS = "/_mgmt" // must not end with a slash!

	// MetadataPrefix is the etcd prefix where all our fs superblocks live.
	MetadataPrefix = "/fs"

	// StoragePrefix is the etcd prefix where all our fs data lives.
	StoragePrefix = "/storage"
)

type Config struct {
	// Program is the name of this program, usually set at compile time.
	Program string `arg:"-"` // cli should ignore

	// Version is the version of this program, usually set at compile time.
	Version string `arg:"-"` // cli should ignore

	// Debug represents if we're running in debug mode or not.
	Debug bool `arg:"-"` // cli should ignore

	// Logf is a logger which should be used.
	Logf func(format string, v ...interface{}) `arg:"-"` // cli should ignore

	// Hostname to use; nil if undefined. Useful for testing multiple
	// instances on same machine or for overriding a bad automatic hostname.
	Hostname *string `arg:"--hostname" help:"hostname to use"`

	// Prefix passed in; nil if undefined.
	Prefix *string `arg:"--prefix,env:MGMT_PREFIX" help:"specify a path to the working prefix directory"`

	// TmpPrefix requests a pseudo-random, temporary prefix to be used.
	TmpPrefix bool `arg:"--tmp-prefix" help:"request a pseudo-random, temporary prefix to be used"`

	// AllowTmpPrefix allows creation of a new temporary prefix if main
	// prefix is unavailable.
	AllowTmpPrefix bool `arg:"--allow-tmp-prefix" help:"allow creation of a new temporary prefix if main prefix is unavailable"`

	// NoWatch tells engine to not change graph under any circumstances.
	// TODO: We should consider deprecating this feature.
	NoWatch bool `arg:"--no-watch" help:"do not update graph under any switch events"`

	// NoStreamWatch tells engine to not update graph due to stream changes.
	// TODO: We should consider deprecating this feature.
	NoStreamWatch bool `arg:"--no-stream-watch" help:"do not update graph on stream switch events"`

	// NoDeployWatch tells engine to not change deploys after an initial
	// deploy.
	// TODO: We should consider deprecating this feature.
	NoDeployWatch bool `arg:"--no-deploy-watch" help:"do not change deploys after an initial deploy"`

	// NoAutoEdges tells the engine to not try and build autoedges.
	NoAutoEdges bool `arg:"--no-autoedges" help:"skip the autoedges stage"`

	// Noop globally forces all resources into no-op mode.
	Noop bool `arg:"--noop" help:"globally force all resources into no-op mode"`

	// Sema adds a semaphore with this lock count to each resource. This is
	// useful for reducing parallelism.
	Sema int `arg:"--sema" default:"-1" help:"globally add a semaphore to downloads with this lock count"`

	// Graphviz is the output file for graphviz data.
	Graphviz string `arg:"--graphviz" help:"output file for graphviz data"`

	// GraphvizFilter is the graphviz filter to use, such as `dot` or
	// `neato`.
	GraphvizFilter string `arg:"--graphviz-filter" help:"graphviz filter to use"`

	// ConvergedTimeout of approximately this many seconds of inactivity
	// means we're in a converged state; -1 to disable.
	ConvergedTimeout int `arg:"--converged-timeout,env:MGMT_CONVERGED_TIMEOUT" default:"-1" help:"after approximately this many seconds without activity, we're considered to be in a converged state"`

	// ConvergedTimeoutNoExit means we don't exit on converged timeout.
	ConvergedTimeoutNoExit bool `arg:"--converged-timeout-no-exit" help:"don't exit on converged-timeout"`

	// ConvergedStatusFile is a file we append converged status to.
	ConvergedStatusFile string `arg:"--converged-status-file" help:"file to append the current converged state to, mostly used for testing"`

	// MaxRuntime tells the engine to exit after a maximum of approximately
	// this many seconds. Use 0 to disable this.
	MaxRuntime uint `arg:"--max-runtime,env:MGMT_MAX_RUNTIME" help:"exit after a maximum of approximately this many seconds"`

	// SshUrl can be specified if we want to transport the SSH client
	// connection over SSH. If this is specified, the second hop is made
	// with the Seeds values, but they connect from this destination. You
	// can specify this in the standard james@server:22 format. This will
	// use your ~/.ssh/ directory for public key authentication and
	// verifying the host key in the known_hosts file. This must already be
	// setup for things to work.
	SshUrl string `arg:"--ssh-url" help:"transport the etcd client connection over SSH to this server"`

	// Seeds are the list of default etcd client endpoints. If empty, it
	// will startup a new server.
	Seeds []string `arg:"--seeds,env:MGMT_SEEDS" help:"default etcd client endpoints"`

	// ClientURLs are a list of URLs to listen on for client traffic. Ports
	// 2379 and 4001 are common.
	ClientURLs []string `arg:"--client-urls,env:MGMT_CLIENT_URLS" help:"list of URLs to listen on for client traffic"`

	// ServerURLs are a list of URLs to listen on for server (peer) traffic.
	// Ports 2380 and 7001 are common. Etcd now uses --peer-urls instead.
	ServerURLs []string `arg:"--server-urls,env:MGMT_SERVER_URLS" help:"list of URLs to listen on for server (peer) traffic"`

	// AdvertiseClientURLs are a list of URLs to advertise for client
	// traffic. Ports 2379 and 4001 are common.
	AdvertiseClientURLs []string `arg:"--advertise-client-urls,env:MGMT_ADVERTISE_CLIENT_URLS" help:"list of URLs to listen on for client traffic"`

	// AdvertiseServerURLs are a list of URLs to advertise for server (peer)
	// traffic. Ports 2380 and 7001 are common. Etcd now uses
	// --advertise-peer-urls instead.
	AdvertiseServerURLs []string `arg:"--advertise-server-urls,env:MGMT_ADVERTISE_SERVER_URLS" help:"list of URLs to listen on for server (peer) traffic"`

	// IdealClusterSize is the ideal number of server peers in cluster. This
	// value is only read by the initial server.
	IdealClusterSize int `arg:"--ideal-cluster-size,env:MGMT_IDEAL_CLUSTER_SIZE" default:"-1" help:"ideal number of server peers in cluster; only read by initial server"`

	// NoServer tells the engine to not let other servers peer with me.
	NoServer bool `arg:"--no-server" help:"do not start embedded etcd server (do not promote from client to peer)"`

	// NoNetwork tells the engine to run a single node instance without
	// clustering or opening tcp ports to the outside.
	NoNetwork bool `arg:"--no-network,env:MGMT_NO_NETWORK" help:"run single node instance without clustering or opening tcp ports to the outside"`

	// NoMagic turns off some things which aren't needed when used with a
	// simple Seeds and NoServer option.
	NoMagic bool `arg:"--no-magic" help:"do not do any etcd magic (for simple clients)"`

	// NoPgp disables pgp functionality.
	NoPgp bool `arg:"--no-pgp" help:"don't create pgp keys"`

	// PgpKeyPath is used to import a pre-made key pair.
	PgpKeyPath *string `arg:"--pgp-key-path" help:"path for instance key pair"`

	// PgpIdentity is the user string used for pgp identity.
	PgpIdentity *string `arg:"--pgp-identity" help:"default identity used for generation"`

	// Prometheus enables prometheus metrics.
	Prometheus bool `arg:"--prometheus" help:"start a prometheus instance"`

	// PrometheusListen is the prometheus instance bind specification.
	PrometheusListen string `arg:"--prometheus-listen" help:"specify prometheus instance binding"`
}

type Main struct {
	// Config is all of our data embedded directly for reusability.
	*Config // embedded config

	Deploy   *gapi.Deploy // deploy object including GAPI for static deploys
	DeployFs engine.Fs    // used for static deploys
	// contains filtered or unexported fields
}