internal

var (
	// GenerationDuration measures the runtime for playlist generation
	GenerationDuration = prometheus.NewHistogram(prometheus.HistogramOpts{
		Name:    "generate_playlist_request_duration_seconds",
		Help:    "Histogram for the runtime of generating the playlist.",
		Buckets: []float64{0.1, 0.2, 0.4, 0.6, 1, 2, 5, 10},
	})

	// FeedbackRequest measures the feedback request latencies
	FeedbackRequest = prometheus.NewHistogram(prometheus.HistogramOpts{
		Name:    "fb_req",
		Help:    "Histogram for the runtime of requesting feedback.",
		Buckets: []float64{0.1, 0.2, 0.4, 0.6, 1, 2, 5, 10},
	})

	// FeedbackInstrumentPreference is a counter for feedback instrument preferences
	FeedbackInstrumentPreference = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "fb_inst_pref",
			Help: "A counter vec for feedback requested instrument preferences.",
		},
		[]string{"inst"},
	)

	// FeedbackRequestSize is a counter feedback files sent
	FeedbackRequestSize = prometheus.NewCounter(
		prometheus.CounterOpts{
			Name: "fb_size",
			Help: "A counter for feedback files sent.",
		},
	)

	// FeedbackGenrePreference is a counter for feedback genre preferences
	FeedbackGenrePreference = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "fb_genr_pref",
			Help: "A counter vec for feedback requested genre preferences.",
		},
		[]string{"genr"},
	)

	// RequestGauge represents a gauge of reqeusts
	RequestGauge = prometheus.NewGauge(prometheus.GaugeOpts{
		Name: "in_flight_requests",
		Help: "A gauge of requests currently being served by the wrapped handler.",
	})

	// RequestCounter is a counter for wrapped requests
	RequestCounter = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "api_requests_total",
			Help: "A counter for requests to the wrapped handler.",
		},
		[]string{"code", "method"},
	)

	// RequestDuration is a histogram of latencies
	RequestDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "request_duration_seconds",
			Help:    "A histogram of latencies for requests.",
			Buckets: []float64{0.05, 0.1, 0.2, 0.25, .5, 1, 2.5, 5, 10},
		},
		[]string{"method"},
	)

	// ResponseSize is a histogram of response sizes
	ResponseSize = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "response_size_bytes",
			Help:    "A histogram of response sizes for requests.",
			Buckets: []float64{200, 500, 1000, 25000, 50000, 1000000, 5000000},
		},
		[]string{},
	)
)

var ConfigFile string

var Data *config

var Db *gorm.DB

var DebugMode bool

var Exists = struct{}{}

var Localizer *i18n.Localizer

var Log *log.Logger

var LogFile string

var Token tokenSecrets