"""Read-only numerical probe of current UD00 event/evaluation consistency."""
import argparse
from pathlib import Path
import subprocess
import sys

ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(ROOT))
from app.simulation.native_codegen.build import _command, toolchain


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('--output', type=Path, required=True)
    args = parser.parse_args()
    out = args.output.resolve()
    out.mkdir(parents=True, exist_ok=True)
    source = out / 'signal-boundary-probe.c'
    code = r'''
#include "SIGNAL_SOURCE"
#include <stdio.h>
int main(void) {
    double d[24]={0};
    d[0]=1e17; d[8]=1e17; d[1]=49000; d[9]=49000; d[16]=.8; d[17]=10;
    double t=0;
    puts("boundary,left,at,right,expected_after,at_matches_after");
    for(int i=0;i<10;i++) {
        t=native_signal_break(t,60,0,2,1,d);
        double expected=i%2==0?49000:1e17;
        printf("%.17g,%.17g,%.17g,%.17g,%.17g,%d\n",t,
            native_signal(nextafter(t,-INFINITY),0,2,1,d),native_signal(t,0,2,1,d),
            native_signal(nextafter(t,INFINITY),0,2,1,d),expected,
            native_signal(t,0,2,1,d)==expected);
    }
    return 0;
}
'''
    source.write_text(code.replace('SIGNAL_SOURCE', (ROOT / 'native/components/modules/signal.c').as_posix()), encoding='ascii')
    compiler, _, version = toolchain()
    exe = out / ('signal-boundary-probe.exe' if sys.platform == 'win32' else 'signal-boundary-probe')
    command = [compiler, '-std=c11', '-O2', '-ffp-contract=off', '-fno-fast-math',
               '-I' + str(ROOT / 'native/include'), str(source), '-lm', '-o', str(exe)]
    _command(command, log=[], timeout=60)
    data = subprocess.check_output([str(exe)], timeout=10)
    (out / 'signal-boundaries.csv').write_bytes(data)
    print(version)
    print(data.decode('ascii'))


if __name__ == '__main__':
    main()