pub use {

    metrics::{counter, gauge, histogram, Unit},

    std::time::Instant,

    tracing::{info, instrument},

};

pub enum MetricEvents {

    ProofExpired,

    ProvingFailed,

    ProvingSucceeded,

    ClaimAttempt,

    ClaimMissed,

    ClaimReceived,

    ImageDeployment,

    ImageDownload,

    ImageCompressed,

    ImageLoaded,

    ImageComputeEstimate,

    ExecutionRequest,

    ProofGeneration,

    ProofCompression,

    ProofConversion,

    InputDownload,

    ProofCycles,

    ProofSegments,

    BonsolStartup,

    SignaturesInFlight,

    IncompatibleProverVersion,

    ProofSubmissionError,

    TransactionExpired,

}

macro_rules! emit_event {

  ($event:expr, $($field_name:ident => $field_value:expr),* $(,)?) => {

      info!(event = $event.to_string(), $($field_name = $field_value),*, "Event: {}", $event);

      let c = counter!("events", "event" => $event.to_string());

      c.increment(1);

  };

}

macro_rules! emit_event_with_duration {

    ($event:expr, $op:block, $($field_name:ident => $field_value:expr),*) => {{

        let start = Instant::now();

        let result = $op;

        let duration_ms = start.elapsed().as_millis();

        info!(

            event = $event.to_string(),

            $($field_name = $field_value),*,

            "Duration: {} = {} ms", $event, duration_ms

        );

        let h = histogram!("durations", "duration" => $event.to_string());

        h.record(duration_ms as f64);

        result

    }};

}

macro_rules! emit_counter {

    ($event:expr, $value:expr, $($field_name:expr => $field_value:expr)*) => {

      info!(event = $event.to_string(), $($field_name = $field_value),*, "{} = {}", $event, $value);

      let c = counter!("counters", "counter" => $event.to_string());

      c.increment($value);

    };

}

macro_rules! emit_gauge {

    ($event:expr, $value:expr, $($field_name:expr => $field_value:expr)*) => {

        info!(event = $event.to_string(), $($field_name = $field_value),* "{} = {}", $event, $value);

        let g = gauge!("gauges", "gauge" => $event.to_string());

        g.set($value);

    };

}

macro_rules! emit_histogram {

    ($event:expr, $value:expr, $($field_name:ident => $field_value:expr),*) => {{

        info!(event = $event.to_string(), $($field_name = $field_value),*, "{} = {}", $event, $value);

        let h = histogram!("histograms", "histogram" => $event.to_string());

        h.record($value);

    }};

}