"""Prepare source-bound implementation work without claiming user acceptance."""

import hashlib
import json
from pathlib import Path
import subprocess
from wbv2_execution_phase import implementation_only


ROOT = Path(__file__).resolve().parents[1]


def prepare(job, workflow, units, sources, changed, dependencies):
    context = json.loads(subprocess.check_output(
        ["node", "tools/web/print-task-context.mjs"], cwd=ROOT, text=True))
    if not implementation_only(ROOT):
        subprocess.run(["node", "tools/web/check-task-context.mjs"], cwd=ROOT, check=True)
    dependencies = sorted(set(sources + changed + dependencies + [
        "my-tools/wbv2_compilation_recipe.py", "my-tools/build_local_webengine.py",
        "tools/web/incremental-web-build.mjs", "tools/web/sync-web-engine-runtime.mjs",
        "tools/web/run-incremental-typecheck.mjs", ".emscripten-web",
        "build_web_blender6/CMakeCache.txt", "web/app/vite.config.ts",
        "web/package.json", "web/tsconfig.json", "web/protocol/scene-ir.ts",
        "web/protocol/web-engine.ts", "web/app/src/engine-client/WebEngineClient.ts",
        "web/app/src/workers/web-engine.worker.ts",
    ]))
    missing = [path for path in dependencies if not (ROOT / path).is_file()]
    if missing:
        raise ValueError(f"Missing compilation inputs: {missing}")
    result = {
        "status": "ready", "contractKind": "compilation_only",
        "summary": workflow, "workflow": workflow,
        "sourceUnits": sorted(set(units)), "routeIds": sorted(set(units)),
        "sourceReferences": sources, "changedFiles": changed,
        "dependencies": dependencies,
        "artifacts": ["build_web_blender6/bin/web_engine.wasm",
                      "build_web_blender6/bin/web_engine.js", "build_blender_native/bin/blender"],
        "checks": [
            {"id": "wasm-source-build", "argv": ["python3", "my-tools/build_local_webengine.py"],
             "cwd": ".", "kinds": ["source_build"], "timeoutSeconds": 1800},
            {"id": "web-build", "argv": ["node", "tools/web/incremental-web-build.mjs"],
             "cwd": ".", "kinds": ["typecheck"], "dependsOn": ["wasm-source-build"],
             "timeoutSeconds": 180},
        ],
        "cases": [],
    }
    document = {
        "schemaVersion": 1, "task": context["task"], "job": job,
        "parentSha256": hashlib.sha256(
            (ROOT / context["sourceDocuments"]["parentManifest"]).read_bytes()).hexdigest(),
        "acceptance": "deferred until user use; no behavioral acceptance claimed",
        "result": result,
    }
    target = ROOT / "my-tools/local-workflows" / f"{job}.json"
    target.parent.mkdir(parents=True, exist_ok=True)
    temporary = target.with_suffix(".json.tmp")
    temporary.write_text(json.dumps(document, indent=2) + "\n")
    temporary.replace(target)
    print(json.dumps({"job": job, "state": "prepared", "contractKind": "compilation_only"}))