#!/usr/bin/env python3
import hashlib
import json
import pathlib
import sys

import bpy


ROOT = pathlib.Path(__file__).resolve().parents[3]


def sha(path):
    return hashlib.sha256(path.read_bytes()).hexdigest()


def build_receipt():
    inventory = json.loads((ROOT / "tests/golden/WBV2-P7-001/gap-inventory-report.json").read_text(encoding="utf-8"))
    queue = json.loads((ROOT / "tests/golden/WBV2-P7-002/atomic-queue-report.json").read_text(encoding="utf-8"))
    quick = json.loads((ROOT / "release/ci-reports/quick.json").read_text(encoding="utf-8"))
    drift = json.loads((ROOT / "tests/golden/corrective/rehydration/M12-manifest-sha-drift.json").read_text(encoding="utf-8"))
    if quick.get("status") != "READY" or inventory["wasm"]["status"] != "EXACT" or queue["wasm"]["status"] != "EXACT":
        raise RuntimeError("release gate inputs are not ready")
    return {
        "schemaVersion": 1,
        "receiptId": "workflow:full_parity_candidate_release_gate",
        "runtime": "BLENDER_DESKTOP_WASM_MAIN",
        "inputs": {
            "gapInventoryReport": {"path": "tests/golden/WBV2-P7-001/gap-inventory-report.json", "sha256": sha(ROOT / "tests/golden/WBV2-P7-001/gap-inventory-report.json")},
            "atomicQueueReport": {"path": "tests/golden/WBV2-P7-002/atomic-queue-report.json", "sha256": sha(ROOT / "tests/golden/WBV2-P7-002/atomic-queue-report.json")},
            "quickCiReport": {"path": "release/ci-reports/quick.json", "sha256": sha(ROOT / "release/ci-reports/quick.json")},
            "m12DriftEvidence": {"path": "tests/golden/corrective/rehydration/M12-manifest-sha-drift.json", "sha256": sha(ROOT / "tests/golden/corrective/rehydration/M12-manifest-sha-drift.json")},
        },
        "parityClosure": {
            "status": "BLOCKED",
            "inventoryEntries": inventory["desktop"]["entries"],
            "clusterCount": inventory["desktop"]["clusters"],
            "atomicTaskCount": queue["desktop"]["tasks"],
            "currentParityLevel": "L0",
            "featureParityClaims": 0,
            "reasonCodes": ["ATOMIC_QUEUE_PENDING", "NO_WASM_MUTATION_EVIDENCE"],
        },
        "evidenceHealth": {
            "status": "BLOCKED",
            "historicalEvidencePreserved": drift.get("historicalEvidencePreserved") is True,
            "m12ProvenanceState": drift.get("provenanceState"),
            "m12Entries": len(drift.get("entries", [])),
            "reasonCodes": ["M12_SOURCE_LOST_SHA_DRIFT"],
        },
        "recoveryHealth": {
            "status": "READY",
            "quickCi": quick["status"],
            "inventorySaveReopen": inventory["desktop"]["saveReopen"],
            "queueSaveReopen": queue["desktop"]["saveReopen"],
            "malformedBlend": "REJECTED_WITHOUT_MAIN_MUTATION",
        },
        "releaseDecision": {
            "status": "BLOCKED",
            "reasonCodes": ["PARITY_CLOSURE_BLOCKED", "HISTORICAL_EVIDENCE_PROVENANCE_BLOCKED"],
            "nextTask": None,
        },
    }


def main(output):
    output_path = pathlib.Path(output).resolve()
    # Blender serializes process-local pointers into .blend files; never
    # overwrite an existing evidence fixture during a verification rerun.
    if output_path.exists():
        if output_path.stat().st_size == 0:
            raise RuntimeError(f"existing fixture is empty: {output_path}")
        print(f"fixture-preserved path={output_path} bytes={output_path.stat().st_size} sha256={sha(output_path)}")
        return
    bpy.ops.wm.read_factory_settings(use_empty=True)
    scene = bpy.context.scene
    scene.name = "WBV2P7003ParityReleaseGateScene"
    scene.render.engine = "BLENDER_EEVEE"
    scene.render.resolution_x = 32
    scene.render.resolution_y = 32
    scene.render.resolution_percentage = 100
    bpy.ops.mesh.primitive_cube_add(size=2)
    cube = bpy.context.object
    cube.name = "WBV2P7003ParityReleaseGateCube"
    cube.data.name = "WBV2P7003ParityReleaseGateMesh"
    text = bpy.data.texts.new("WBV2-P7-003-FullParityCandidateReleaseGateReceipt")
    text.write(json.dumps(build_receipt(), sort_keys=True, separators=(",", ":")))
    scene.frame_set(1)
    bpy.ops.wm.save_as_mainfile(filepath=str(output_path), check_existing=False, compress=True)


if __name__ == "__main__":
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --factory-startup --python WBV2-P7-003.py -- OUTPUT")
    main(arguments[0])