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#![allow(clippy::too_many_arguments, reason = "buildstructor")]

use std::path::PathBuf;

use inferno::collapse::dtrace::Options as DtraceOptions;
use inferno::collapse::perf::Options as PerfOptions;

type FlamegraphOptions = inferno::flamegraph::Options<'static>;

#[derive(Clone, buildstructor::Builder)]
#[non_exhaustive] // Prevent direct construction.
pub struct TracingOptions {
    /// Samples per second.
    pub frequency: u32,

    /// Output filename for `dtrace`. Example: `my_worker.stacks`.
    pub dtrace_outfile: Option<PathBuf>,

    /// Output filename for the raw data emitted by `perf record`. Example: `my_worker.perf.data`.
    pub perf_raw_outfile: Option<PathBuf>,
    // /// Output filename for `perf script -i <`[`Self::perf_raw_outfile`]`>`. Example: `my_worker.perf`.
    // pub perf_script_outfile: Option<PathBuf>,
    /// If set, what the write the folded output to.
    pub fold_outfile: Option<PathBuf>,
    pub fold_dtrace_options: Option<DtraceOptions>,
    pub fold_perf_options: Option<PerfOptions>,
    /// If set, what to write the output flamegraph SVG file to.
    pub flamegraph_outfile: Option<PathBuf>,
    // This type is super annoying and isn't `clone` and has a lifetime... so wrap in fn pointer for now.
    pub flamegraph_options: Option<fn() -> FlamegraphOptions>,
}