"""Record committed git task/build/registry bytes; never untracked bytecode."""
import hashlib
import json
from pathlib import Path
import subprocess
ROOT=Path(__file__).resolve().parent


def update():
    path=ROOT/'task-source.json';source=json.loads(path.read_text());repo=ROOT/'.state/task-registry-repo'
    revision=source['commit']
    files=subprocess.check_output(['git','-C',str(repo),'ls-tree','-r','--name-only',revision,'tasks','build','registry.json'],text=True).splitlines()
    manifest={};build={}
    for file in files:
        data=subprocess.check_output(['git','-C',str(repo),'show',f'{revision}:{file}'])
        sha=hashlib.sha256(data).hexdigest()
        if file.startswith('tasks/'):
            _,task,relative=file.split('/',2)
            manifest.setdefault(task,{})[relative]=sha
        elif file.startswith('build/'):
            build[file]=sha
        else:
            source['registry_sha256']=sha
    source['task_manifest']=manifest;source['build_manifest']=build
    path.write_text(json.dumps(source,indent=2)+'\n')


if __name__=='__main__':
    update()