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

import bpy


RECEIPT_NAME = "WBV2-P7-001-ClusterFullBlenderGapInventoryReceipt"
CUBE_NAME = "WBV2P7001GapInventoryCube"


def state():
    scene = bpy.context.scene
    receipt_text = bpy.data.texts.get(RECEIPT_NAME)
    cube = bpy.data.objects.get(CUBE_NAME)
    if receipt_text is None or cube is None:
        raise RuntimeError("gap inventory fixture is missing receipt or cube")
    return {"sceneId": "scene:" + scene.name, "cubeId": "object:" + cube.name, "receipt": json.loads(receipt_text.as_string())}


def validate(receipt):
    if receipt.get("schemaVersion") != 1 or receipt.get("receiptId") != "workflow:cluster_full_blender_gap_inventory":
        raise RuntimeError("gap inventory receipt identity is invalid")
    source = receipt.get("inventorySource", {})
    if source.get("entryCount") != receipt.get("summary", {}).get("inventoryEntries") or len(source.get("sha256", "")) != 64:
        raise RuntimeError("gap inventory source binding is invalid")
    clusters = receipt.get("clusters", [])
    summary = receipt.get("summary", {})
    if len(clusters) != summary.get("clusterCount") or len(clusters) != 15:
        raise RuntimeError("gap inventory clusters are incomplete")
    if summary.get("currentParityClaims") != 0 or summary.get("currentParityLevel") != "L0":
        raise RuntimeError("gap inventory must not claim parity")
    if summary.get("webGapEntries") != summary.get("inventoryEntries"):
        raise RuntimeError("all unproven inventory entries must remain explicit gaps")
    ids = []
    for cluster in clusters:
        ids.append(cluster.get("capabilityId"))
        if (cluster.get("entryCount", 0) != cluster.get("legacyCompleted", 0) + cluster.get("legacyPending", 0) + cluster.get("legacyActive", 0) or
                cluster.get("currentParityLevel") != "L0" or cluster.get("completionClass") != "METADATA_ONLY" or
                cluster.get("evidenceStatus") != "NOT_RUN" or cluster.get("webStatus") != "GAP" or
                not isinstance(cluster.get("riskScore"), int) or not cluster.get("representativeIds")):
            raise RuntimeError("gap inventory cluster is not fail-closed")
    if len(set(ids)) != len(ids) or receipt.get("riskRanking") != [cluster["capabilityId"] for cluster in sorted(clusters, key=lambda value: (-value["riskScore"], value["capabilityId"]))]:
        raise RuntimeError("gap inventory risk ranking is not deterministic")


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 2:
        raise SystemExit("usage: blender -b --factory-startup --python check-wbv2-p7-001-desktop.py -- FIXTURE REPORT")
    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
    before = state()
    validate(before["receipt"])
    temporary = fixture.with_name(f"{fixture.stem}-reopen.blend")
    try:
        bpy.ops.wm.save_as_mainfile(filepath=str(temporary), check_existing=False, compress=True)
        bpy.ops.wm.open_mainfile(filepath=str(temporary), load_ui=False)
        after = state()
    finally:
        temporary.unlink(missing_ok=True)
    if before != after:
        raise RuntimeError(f"gap inventory save/reopen drift: {before} != {after}")
    report = {
        "schemaVersion": 1,
        "task": "WBV2-P7-001",
        "operation": "CLUSTER_FULL_BLENDER_GAP_INVENTORY_DESKTOP",
        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
        "state": after,
        "saveReopen": "EXACT",
        "blenderVersion": bpy.app.version_string,
    }
    output.parent.mkdir(parents=True, exist_ok=True)
    output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
    print(f"wbv2-p7-001-desktop-ok clusters={len(after['receipt']['clusters'])} entries={after['receipt']['summary']['inventoryEntries']} webGap={after['receipt']['summary']['webGapEntries']} saveReopen=exact")


if __name__ == "__main__":
    main()