// Register with Fs
func init() {
	fs.Register(&fs.RegInfo{
		Name:        "drive",
		Description: "Google Drive",
		NewFs:       NewFs,
		Config: func(name string) {
			err := oauthutil.Config("drive", name, driveConfig)
			if err != nil {
				log.Fatalf("Failed to configure token: %v", err)
			}
		},
		Options: []fs.Option{{
			Name: fs.ConfigClientID,
			Help: "Google Application Client Id - leave blank normally.",
		}, {
			Name: fs.ConfigClientSecret,
			Help: "Google Application Client Secret - leave blank normally.",
		}},
	})
	pflag.VarP(&driveUploadCutoff, "drive-upload-cutoff", "", "Cutoff for switching to chunked upload")
	pflag.VarP(&chunkSize, "drive-chunk-size", "", "Upload chunk size. Must a power of 2 >= 256k.")

	// Invert mimeTypeToExtension
	extensionToMimeType = make(map[string]string, len(mimeTypeToExtension))
	for mimeType, extension := range mimeTypeToExtension {
		extensionToMimeType[extension] = mimeType
	}
}

func initFlags() {
	flag.IntVarP(&options.Port, "port", "p", 80, "The port to listen on")
	flag.StringVarP(&options.StaticDir, "www", "w", ".", "Directory to serve static files from")
	flag.StringVar(&options.StaticPrefix, "www-prefix", "/", "Prefix to serve static files on")
	flag.DurationVar(&options.StaticCacheMaxAge, "max-age", 0, "Set the Cache-Control header for static content with the max-age set to this value, e.g. 24h. Must confirm to http://golang.org/pkg/time/#ParseDuration")
	flag.StringVarP(&options.DefaultPage, "default-page", "d", "", "Default page to send if page not found")
	flag.VarP(&options.Services, "service", "s", "The Kubernetes services to proxy to in the form \"<prefix>=<serviceUrl>\"")
	flag.VarP(&options.Configs, "config-file", "c", "The configuration files to create in the form \"<template>=<output>\"")
	flag.Var(&options.CACerts, "ca-cert", "CA certs used to verify proxied server certificates")
	flag.StringVar(&options.TlsCertFile, "tls-cert", "", "Certificate file to use to serve using TLS")
	flag.StringVar(&options.TlsKeyFile, "tls-key", "", "Certificate file to use to serve using TLS")
	flag.BoolVar(&options.SkipCertValidation, "skip-cert-validation", false, "Skip remote certificate validation - dangerous!")
	flag.BoolVarP(&options.AccessLogging, "access-logging", "l", false, "Enable access logging")
	flag.BoolVar(&options.CompressHandler, "compress", false, "Enable gzip/deflate response compression")
	flag.BoolVar(&options.FailOnUnknownServices, "fail-on-unknown-services", false, "Fail on unknown services in DNS")
	flag.BoolVar(&options.ServeWww, "serve-www", true, "Whether to serve static content")
	flag.Parse()
}

// Register with Fs
func init() {
	fs.Register(&fs.RegInfo{
		Name:        "swift",
		Description: "Openstack Swift (Rackspace Cloud Files, Memset Memstore, OVH)",
		NewFs:       NewFs,
		Options: []fs.Option{{
			Name: "user",
			Help: "User name to log in.",
		}, {
			Name: "key",
			Help: "API key or password.",
		}, {
			Name: "auth",
			Help: "Authentication URL for server.",
			Examples: []fs.OptionExample{{
				Help:  "Rackspace US",
				Value: "https://auth.api.rackspacecloud.com/v1.0",
			}, {
				Help:  "Rackspace UK",
				Value: "https://lon.auth.api.rackspacecloud.com/v1.0",
			}, {
				Help:  "Rackspace v2",
				Value: "https://identity.api.rackspacecloud.com/v2.0",
			}, {
				Help:  "Memset Memstore UK",
				Value: "https://auth.storage.memset.com/v1.0",
			}, {
				Help:  "Memset Memstore UK v2",
				Value: "https://auth.storage.memset.com/v2.0",
			}, {
				Help:  "OVH",
				Value: "https://auth.cloud.ovh.net/v2.0",
			}},
		}, {
			Name: "domain",
			Help: "User domain - optional (v3 auth)",
		}, {
			Name: "tenant",
			Help: "Tenant name - optional for v1 auth, required otherwise",
		}, {
			Name: "tenant_domain",
			Help: "Tenant domain - optional (v3 auth)",
		}, {
			Name: "region",
			Help: "Region name - optional",
		}, {
			Name: "storage_url",
			Help: "Storage URL - optional",
		}, {
			Name: "auth_version",
			Help: "AuthVersion - optional - set to (1,2,3) if your auth URL has no version",
		},
		},
	})
	// snet     = flag.Bool("swift-snet", false, "Use internal service network") // FIXME not implemented
	pflag.VarP(&chunkSize, "swift-chunk-size", "", "Above this size files will be chunked into a _segments container.")
}

// Register with Fs
func init() {
	fs.Register(&fs.RegInfo{
		Name:        "b2",
		Description: "Backblaze B2",
		NewFs:       NewFs,
		Options: []fs.Option{{
			Name: "account",
			Help: "Account ID",
		}, {
			Name: "key",
			Help: "Application Key",
		}, {
			Name: "endpoint",
			Help: "Endpoint for the service - leave blank normally.",
		},
		},
	})
	pflag.VarP(&uploadCutoff, "b2-upload-cutoff", "", "Cutoff for switching to chunked upload")
	pflag.VarP(&chunkSize, "b2-chunk-size", "", "Upload chunk size. Must fit in memory.")
}

// Register with Fs
func init() {
	fs.Register(&fs.Info{
		Name:  "onedrive",
		NewFs: NewFs,
		Config: func(name string) {
			err := oauthutil.Config(name, oauthConfig)
			if err != nil {
				log.Fatalf("Failed to configure token: %v", err)
			}
		},
		Options: []fs.Option{{
			Name: oauthutil.ConfigClientID,
			Help: "Microsoft App Client Id - leave blank normally.",
		}, {
			Name: oauthutil.ConfigClientSecret,
			Help: "Microsoft App Client Secret - leave blank normally.",
		}},
	})
	pflag.VarP(&chunkSize, "onedrive-chunk-size", "", "Above this size files will be chunked - must be multiple of 320k.")
	pflag.VarP(&uploadCutoff, "onedrive-upload-cutoff", "", "Cutoff for switching to chunked upload - must be <= 100MB")
}

// Register with Fs
func init() {
	fs.Register(&fs.FsInfo{
		Name:  "drive",
		NewFs: NewFs,
		Config: func(name string) {
			err := oauthutil.Config(name, driveConfig)
			if err != nil {
				log.Fatalf("Failed to configure token: %v", err)
			}
		},
		Options: []fs.Option{{
			Name: "client_id",
			Help: "Google Application Client Id - leave blank to use rclone's.",
		}, {
			Name: "client_secret",
			Help: "Google Application Client Secret - leave blank to use rclone's.",
		}},
	})
	pflag.VarP(&driveUploadCutoff, "drive-upload-cutoff", "", "Cutoff for switching to chunked upload")
	pflag.VarP(&chunkSize, "drive-chunk-size", "", "Upload chunk size. Must a power of 2 >= 256k.")
}

// Register with Fs
func init() {
	fs.Register(&fs.Info{
		Name:   "dropbox",
		NewFs:  NewFs,
		Config: configHelper,
		Options: []fs.Option{{
			Name: "app_key",
			Help: "Dropbox App Key - leave blank normally.",
		}, {
			Name: "app_secret",
			Help: "Dropbox App Secret - leave blank normally.",
		}},
	})
	pflag.VarP(&uploadChunkSize, "dropbox-chunk-size", "", fmt.Sprintf("Upload chunk size. Max %v.", maxUploadChunkSize))
}

func init() {
	flag.VarP(&testList, "test", "t", "Test to execute (may be repeated or comma separated list of tests.) Defaults to running all tests.")

	flag.StringVar(&context.KubeConfig, clientcmd.RecommendedConfigPathFlag, "", "Path to kubeconfig containing embeded authinfo.")
	flag.StringVar(&context.KubeContext, clientcmd.FlagContext, "", "kubeconfig context to use/override. If unset, will use value from 'current-context'")
	flag.StringVar(&context.AuthConfig, "auth_config", "", "Path to the auth info file.")
	flag.StringVar(&context.CertDir, "cert_dir", "", "Path to the directory containing the certs. Default is empty, which doesn't use certs.")
	flag.StringVar(&context.Host, "host", "", "The host, or apiserver, to connect to")
	flag.StringVar(&context.RepoRoot, "repo_root", "./", "Root directory of kubernetes repository, for finding test files. Default assumes working directory is repository root")
	flag.StringVar(&context.Provider, "provider", "", "The name of the Kubernetes provider (gce, gke, local, vagrant, etc.)")

	// TODO: Flags per provider?  Rename gce_project/gce_zone?
	flag.StringVar(&cloudConfig.MasterName, "kube_master", "", "Name of the kubernetes master. Only required if provider is gce or gke")
	flag.StringVar(&cloudConfig.ProjectID, "gce_project", "", "The GCE project being used, if applicable")
	flag.StringVar(&cloudConfig.Zone, "gce_zone", "", "GCE zone being used, if applicable")
}

// Register with Fs
func init() {
	fs.Register(&fs.Info{
		Name:  "swift",
		NewFs: NewFs,
		Options: []fs.Option{{
			Name: "user",
			Help: "User name to log in.",
		}, {
			Name: "key",
			Help: "API key or password.",
		}, {
			Name: "auth",
			Help: "Authentication URL for server.",
			Examples: []fs.OptionExample{{
				Help:  "Rackspace US",
				Value: "https://auth.api.rackspacecloud.com/v1.0",
			}, {
				Help:  "Rackspace UK",
				Value: "https://lon.auth.api.rackspacecloud.com/v1.0",
			}, {
				Help:  "Rackspace v2",
				Value: "https://identity.api.rackspacecloud.com/v2.0",
			}, {
				Help:  "Memset Memstore UK",
				Value: "https://auth.storage.memset.com/v1.0",
			}, {
				Help:  "Memset Memstore UK v2",
				Value: "https://auth.storage.memset.com/v2.0",
			}, {
				Help:  "OVH",
				Value: "https://auth.cloud.ovh.net/v2.0",
			}},
		}, {
			Name: "tenant",
			Help: "Tenant name - optional",
		}, {
			Name: "region",
			Help: "Region name - optional",
		}, {
			Name: "storage_url",
			Help: "Storage URL - optional",
		},
		},
	})
	// snet     = flag.Bool("swift-snet", false, "Use internal service network") // FIXME not implemented
	pflag.VarP(&chunkSize, "swift-chunk-size", "", "Above this size files will be chunked into a _segments container.")
}

// Register with Fs
func init() {
	fs.Register(&fs.Info{
		Name:  "amazon cloud drive",
		NewFs: NewFs,
		Config: func(name string) {
			err := oauthutil.Config("amazon cloud drive", name, acdConfig)
			if err != nil {
				log.Fatalf("Failed to configure token: %v", err)
			}
		},
		Options: []fs.Option{{
			Name: fs.ConfigClientID,
			Help: "Amazon Application Client Id - leave blank normally.",
		}, {
			Name: fs.ConfigClientSecret,
			Help: "Amazon Application Client Secret - leave blank normally.",
		}},
	})
	pflag.VarP(&tempLinkThreshold, "acd-templink-threshold", "", "Files >= this size will be downloaded via their tempLink.")
}

func init() {
	pflag.VarP(&bwLimit, "bwlimit", "", "Bandwidth limit in kBytes/s, or use suffix k|M|G")
}

func init() {
	flag.VarP(&testList, "test", "t", "Test to execute (may be repeated or comma separated list of tests.) Defaults to running all tests.")
}

func init() {
	pflag.VarP(&minSize, "min-size", "", "Don't transfer any file smaller than this in k or suffix k|M|G")
	pflag.VarP(&maxSize, "max-size", "", "Don't transfer any file larger than this in k or suffix k|M|G")
}

// VarP defines a flag which can be overridden by an environment variable
//
// It is a thin wrapper around pflag.VarP
func VarP(value pflag.Value, name, shorthand, usage string) {
	pflag.VarP(value, name, shorthand, usage)
	setDefaultFromEnv(name)
}