#!/usr/bin/env python3
"""Build the opt-in saturation observer without changing product dependencies."""
import argparse
import json
from pathlib import Path
import subprocess
import xml.etree.ElementTree as ET


def build(output, libraries, linux):
    output = output.resolve()
    output.mkdir(parents=True, exist_ok=False)
    project = ET.Element("Project", Sdk="Microsoft.NET.Sdk")
    properties = ET.SubElement(project, "PropertyGroup")
    for key, value in {"OutputType": "Exe", "TargetFramework": "net10.0", "ImplicitUsings": "enable",
                       "TreatWarningsAsErrors": "true", "EnableDefaultCompileItems": "false"}.items():
        ET.SubElement(properties, key).text = value
    items = ET.SubElement(project, "ItemGroup")
    ET.SubElement(items, "FrameworkReference", Include="Microsoft.AspNetCore.App")
    ET.SubElement(items, "Compile", Include=str(Path(__file__).resolve().parent / "SaturationObserver.cs"))
    for name in ["Microsoft.Diagnostics.NETCore.Client", "Microsoft.Diagnostics.Tracing.TraceEvent", "Microsoft.Diagnostics.FastSerialization"]:
        path = (libraries / (name + ".dll")).resolve(strict=True)
        reference = ET.SubElement(items, "Reference", Include=name)
        ET.SubElement(reference, "HintPath").text = str(path)
    project_path = output / "observer.csproj"
    ET.indent(project)
    ET.ElementTree(project).write(project_path, encoding="unicode")
    command = ["dotnet", "publish" if linux else "build", str(project_path), "-c", "Release", "-m:2", "--nologo"]
    if linux:
        command += ["-r", "linux-arm64", "--self-contained", "true", "-p:RuntimeFrameworkVersion=10.0.14",
                    "-p:PublishSingleFile=false", "-p:PublishTrimmed=false", "-p:UseAppHost=true", "-o", str(output / "published")]
    with (output / "build.log").open("w") as log:
        result = subprocess.run(command, stdout=log, stderr=subprocess.STDOUT)
    (output / "build-command.json").write_text(json.dumps(command, indent=2) + "\n")
    if result.returncode:
        raise subprocess.CalledProcessError(result.returncode, command)
    return output / ("published" if linux else "bin/Release/net10.0")


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--output", required=True, type=Path)
    parser.add_argument("--libraries", required=True, type=Path)
    parser.add_argument("--linux-self-contained", action="store_true")
    args = parser.parse_args()
    print(build(args.output, args.libraries, args.linux_self_contained))