#!/usr/bin/env python3
"""Compile diagnostic adapters against the immutable original publication; never build product code."""
import argparse
import hashlib
import json
from pathlib import Path
import subprocess
import xml.etree.ElementTree as ET

parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--host', type=Path, required=True)
parser.add_argument('--client', type=Path, required=True)
parser.add_argument('--assertions', type=Path, required=True, help='Directory containing Shouldly.dll; only assertion dependencies are selected')
parser.add_argument('--output', type=Path, required=True)
parser.add_argument('--inventory', action='store_true')
args = parser.parse_args()
root = args.output.resolve(); root.mkdir(parents=True, exist_ok=False)
source = Path(__file__).resolve().parent
references = {}
for directory in [args.host, args.client]:
    for dll in sorted(directory.resolve(strict=True).glob('*.dll')):
        references.setdefault(dll.name, dll)
for name in ['Shouldly.dll', 'DiffEngine.dll', 'EmptyFiles.Xml.dll']:
    path = args.assertions.resolve(strict=True) / name
    if path.exists(): references.setdefault(name, path)
project = ET.Element('Project', Sdk='Microsoft.NET.Sdk')
properties = ET.SubElement(project, 'PropertyGroup')
for key,value in {'OutputType':'Exe','TargetFramework':'net10.0','Nullable':'enable','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')
for name,path in references.items():
    reference=ET.SubElement(items,'Reference',Include=path.stem); ET.SubElement(reference,'HintPath').text=str(path)
files = ['Inventory.cs'] if args.inventory else ['Program.cs','BaselineRig.cs','BaselineMetrics.cs','CanonicalOperations.cs','SemanticRetention.cs']
for name in files: ET.SubElement(items,'Compile',Include=str(source/name))
path=root/'adapter.csproj'; ET.indent(project); ET.ElementTree(project).write(path,encoding='unicode')
manifest={'diagnosticOnly':True,'productRebuilt':False,'references':{name:hashlib.sha256(p.read_bytes()).hexdigest() for name,p in references.items()},
          'sources':{name:hashlib.sha256((source/name).read_bytes()).hexdigest() for name in files}}
(root/'provenance.json').write_text(json.dumps(manifest,indent=2)+'\n')
with (root/'build.log').open('w') as log:
    result=subprocess.run(['dotnet','build',str(path),'-c','Release','-m:2'],stdout=log,stderr=subprocess.STDOUT)
raise SystemExit(result.returncode)