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

import bpy


def library_state():
    libraries = list(bpy.data.libraries)
    if len(libraries) != 1:
        raise RuntimeError(f"expected one catalogs-save library, found {len(libraries)}")
    library = libraries[0]
    return {"name": library.name, "filepath": library.filepath, "packed": library.packed_file is not None}


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 2:
        raise SystemExit("usage: blender -b --factory-startup --python check-action-catalogs-save-desktop.py -- FIXTURE REPORT")
    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
    output.unlink(missing_ok=True)
    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
    before = library_state()
    accepted_errors = ("context is incorrect", "No asset selected", "No asset library", "Catalog")
    try:
        poll = bool(bpy.ops.asset.catalogs_save.poll())
    except RuntimeError as error:
        if not any(token in str(error) for token in accepted_errors):
            raise
        poll = False
    if poll:
        raise RuntimeError("asset.catalogs_save unexpectedly polled true")
    try:
        bpy.ops.asset.catalogs_save()
    except RuntimeError as error:
        if not any(token in str(error) for token in accepted_errors):
            raise
        operator_status = "CANCELLED"
    else:
        raise RuntimeError("asset.catalogs_save unexpectedly finished")
    after_cancel = library_state()
    if after_cancel != before:
        raise RuntimeError(f"catalogs-save cancellation changed Main data: {before} != {after_cancel}")
    with tempfile.NamedTemporaryFile(prefix="m16-catalogs-save-reopen-", suffix=".blend", dir=fixture.parent) as temporary:
        bpy.ops.wm.save_as_mainfile(filepath=temporary.name, check_existing=False, compress=True)
        bpy.ops.wm.open_mainfile(filepath=temporary.name, load_ui=False)
        after = library_state()
    if after != before:
        raise RuntimeError(f"catalogs-save save/reopen drift: {before} != {after}")
    report = {
        "schemaVersion": 1,
        "task": "M16-GAP-00274",
        "operation": "ASSET_CATALOGS_SAVE_DESKTOP",
        "fixture": str(fixture),
        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
        "before": before,
        "after": after,
        "poll": poll,
        "operatorStatus": operator_status,
        "mainMutation": "NONE",
        "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("asset-catalogs-save-desktop-ok poll=false status=CANCELLED mainMutation=none saveReopen=exact")


if __name__ == "__main__":
    try:
        main()
    except Exception as error:
        print(f"asset-catalogs-save-desktop-failed: {error}")
        raise SystemExit(1)