package static

import (
	"github.com/containous/flaeg/parse"
	"github.com/containous/traefik/ping"
	"github.com/containous/traefik/provider/file"
	"github.com/containous/traefik/tls"
	"github.com/containous/traefik/tracing/datadog"
	"github.com/containous/traefik/tracing/jaeger"
	"github.com/containous/traefik/tracing/zipkin"
	"github.com/containous/traefik/types"
	"github.com/elazarl/go-bindata-assetfs"
)

// Configuration FIXME temp static configuration
type Configuration struct {
	Global      *Global
	EntryPoints *EntryPoints

	API     *API           `description:"Enable api/dashboard" export:"true"`
	Metrics *types.Metrics `description:"Enable a metrics exporter" export:"true"`
	Ping    *ping.Handler  `description:"Enable ping" export:"true"`
	// Rest    *rest.Provider `description:"Enable Rest backend with default settings" export:"true"`

	Log       *types.TraefikLog
	AccessLog *types.AccessLog `description:"Access log settings" export:"true"`
	Tracing   *Tracing         `description:"OpenTracing configuration" export:"true"`

	File        *file.Provider    `description:"Enable File backend with default settings" export:"true"`
	Constraints types.Constraints `description:"Filter services by constraint, matching with service tags" export:"true"`

	HostResolver *HostResolverConfig `description:"Enable CNAME Flattening" export:"true"`

	// TODO
	// ACME        *acme.ACME         `description:"Enable ACME (Let's Encrypt): automatic SSL" export:"true"`
	// Retry       *Retry             `description:"Enable retry sending request if network error" export:"true"`
	// HealthCheck *HealthCheckConfig `description:"Health check parameters" export:"true"`
	//

}

// Global holds the global configuration.
type Global struct {
	Debug                     bool                `short:"d" description:"Enable debug mode" export:"true"`
	CheckNewVersion           bool                `description:"Periodically check if a new version has been released" export:"true"`
	SendAnonymousUsage        bool                `description:"send periodically anonymous usage statistics" export:"true"`
	InsecureSkipVerify        bool                `description:"Disable SSL certificate verification" export:"true"`
	RootCAs                   tls.FilesOrContents `description:"Add cert file for self-signed certificate"`
	ProvidersThrottleDuration parse.Duration      `description:"Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time." export:"true"`
	LifeCycle                 *LifeCycle          `description:"Timeouts influencing the server life cycle" export:"true"`
	RespondingTimeouts        *RespondingTimeouts `description:"Timeouts for incoming requests to the Traefik instance" export:"true"`
	ForwardingTimeouts        *ForwardingTimeouts `description:"Timeouts for requests forwarded to the backend servers" export:"true"`
	MaxIdleConnsPerHost       int                 `description:"If non-zero, controls the maximum idle (keep-alive) to keep per-host.  If zero, DefaultMaxIdleConnsPerHost is used" export:"true"`
}

// API holds the API configuration
type API struct {
	EntryPoint      string            `description:"EntryPoint" export:"true"`
	Dashboard       bool              `description:"Activate dashboard" export:"true"`
	Statistics      *types.Statistics `description:"Enable more detailed statistics" export:"true"`
	Middlewares     []string          `description:"Middleware list" export:"true"`
	DashboardAssets *assetfs.AssetFS  `json:"-"`
}

// RespondingTimeouts contains timeout configurations for incoming requests to the Traefik instance.
type RespondingTimeouts struct {
	ReadTimeout  parse.Duration `description:"ReadTimeout is the maximum duration for reading the entire request, including the body. If zero, no timeout is set" export:"true"`
	WriteTimeout parse.Duration `description:"WriteTimeout is the maximum duration before timing out writes of the response. If zero, no timeout is set" export:"true"`
	IdleTimeout  parse.Duration `description:"IdleTimeout is the maximum amount duration an idle (keep-alive) connection will remain idle before closing itself. Defaults to 180 seconds. If zero, no timeout is set" export:"true"`
}

// ForwardingTimeouts contains timeout configurations for forwarding requests to the backend servers.
type ForwardingTimeouts struct {
	DialTimeout           parse.Duration `description:"The amount of time to wait until a connection to a backend server can be established. Defaults to 30 seconds. If zero, no timeout exists" export:"true"`
	ResponseHeaderTimeout parse.Duration `description:"The amount of time to wait for a server's response headers after fully writing the request (including its body, if any). If zero, no timeout exists" export:"true"`
}

// LifeCycle contains configurations relevant to the lifecycle (such as the shutdown phase) of Traefik.
type LifeCycle struct {
	RequestAcceptGraceTimeout parse.Duration `description:"Duration to keep accepting requests before Traefik initiates the graceful shutdown procedure"`
	GraceTimeOut              parse.Duration `description:"Duration to give active requests a chance to finish before Traefik stops"`
}

// EntryPoint holds the entry point configuration
type EntryPoint struct {
	Address string
}

// EntryPointList holds the HTTP entry point list type.
type EntryPointList map[string]EntryPoint

// EntryPoints holds the entry points configuration.
type EntryPoints struct {
	EntryPointList
	Defaults []string
}

// Tracing holds the tracing configuration.
type Tracing struct {
	Backend       string          `description:"Selects the tracking backend ('jaeger','zipkin', 'datadog')." export:"true"`
	ServiceName   string          `description:"Set the name for this service" export:"true"`
	SpanNameLimit int             `description:"Set the maximum character limit for Span names (default 0 = no limit)" export:"true"`
	Jaeger        *jaeger.Config  `description:"Settings for jaeger"`
	Zipkin        *zipkin.Config  `description:"Settings for zipkin"`
	DataDog       *datadog.Config `description:"Settings for DataDog"`
}

// HostResolverConfig contain configuration for CNAME Flattening.
type HostResolverConfig struct {
	CnameFlattening bool   `description:"A flag to enable/disable CNAME flattening" export:"true"`
	ResolvConfig    string `description:"resolv.conf used for DNS resolving" export:"true"`
	ResolvDepth     int    `description:"The maximal depth of DNS recursive resolving" export:"true"`
}