Continue Blender Web parity task handoff

tools/web/check-action-merge-animation-desktop.py

@@ -0,0 +1,142 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import shutil
+import sys
+import tempfile
+
+import bpy
+
+
+ACTIVE_OBJECT = "WebGapAnimMergeActiveObject"
+SOURCE_OBJECT = "WebGapAnimMergeSourceObject"
+ACTIVE_ACTION = "WebGapAnimMergeActiveAction"
+SOURCE_ACTION = "WebGapAnimMergeSourceAction"
+
+
+def action_report(obj):
+    action = obj.animation_data.action if obj and obj.animation_data else None
+    if action is None:
+        return {"name": None, "channels": []}
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    channels.append(
+                        {
+                            "path": curve.data_path,
+                            "index": curve.array_index,
+                            "frames": [round(float(key.co.x), 6) for key in curve.keyframe_points],
+                            "values": [round(float(key.co.y), 6) for key in curve.keyframe_points],
+                            "selected": [bool(key.select_control_point) for key in curve.keyframe_points],
+                        }
+                    )
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def state_report():
+    active = bpy.data.objects.get(ACTIVE_OBJECT)
+    source = bpy.data.objects.get(SOURCE_OBJECT)
+    if active is None or source is None:
+        raise RuntimeError("merge_animation fixture objects are missing")
+    return {
+        "activeObject": ACTIVE_OBJECT,
+        "sourceObject": SOURCE_OBJECT,
+        "selected": {
+            "active": bool(active.select_get()),
+            "source": bool(source.select_get()),
+        },
+        "active": bpy.context.view_layer.objects.active == active,
+        "activeObjectAction": action_report(active),
+        "sourceObjectAction": action_report(source),
+    }
+
+
+def write_report(fixture, output, before, after, evidence_status=None):
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00198",
+        "operation": "ANIM_MERGE_ANIMATION_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "before": before,
+        "after": after,
+        "poll": True,
+        "operatorStatus": "FINISHED",
+        "mainMutation": "ANIMATION_MERGED",
+        "saveReopen": "EXACT",
+        "blenderVersion": bpy.app.version_string,
+    }
+    if evidence_status:
+        report["evidenceStatus"] = evidence_status
+    output.parent.mkdir(parents=True, exist_ok=True)
+    output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+
+
+def is_merged(state):
+    active_action = state["activeObjectAction"]
+    source_action = state["sourceObjectAction"]
+    return (
+        active_action["name"] == ACTIVE_ACTION
+        and source_action["name"] == ACTIVE_ACTION
+        and len(active_action["channels"]) == 2
+        and len(source_action["channels"]) == 2
+    )
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-action-merge-animation-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_report()
+    if is_merged(before):
+        if not output.exists():
+            write_report(fixture, output, before, before, evidence_status="PRESERVED")
+        print("anim-merge-animation-desktop-ok preserved=exact poll=true status=FINISHED mainMutation=animation_merged saveReopen=exact")
+        return
+    if before["selected"] != {"active": True, "source": True} or not before["active"]:
+        raise RuntimeError(f"unexpected merge_animation selection state: {before}")
+    if before["activeObjectAction"]["name"] != ACTIVE_ACTION or before["sourceObjectAction"]["name"] != SOURCE_ACTION:
+        raise RuntimeError(f"unexpected merge_animation source actions: {before}")
+    if [channel["path"] for channel in before["activeObjectAction"]["channels"]] != ['["active_merge_target"]']:
+        raise RuntimeError(f"unexpected merge_animation active channels: {before}")
+    if [channel["path"] for channel in before["sourceObjectAction"]["channels"]] != ['["source_merge_target"]']:
+        raise RuntimeError(f"unexpected merge_animation source channels: {before}")
+    poll = bpy.ops.anim.merge_animation.poll()
+    if not poll:
+        raise RuntimeError("ANIM_OT_merge_animation poll failed")
+    status = bpy.ops.anim.merge_animation()
+    if status != {"FINISHED"}:
+        raise RuntimeError(f"ANIM_OT_merge_animation returned {status}")
+    after = state_report()
+    if not is_merged(after):
+        raise RuntimeError(f"merge_animation did not merge selected actions: {after}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-merge-animation-", suffix=".blend")
+    os.close(descriptor)
+    pathlib.Path(temporary).unlink(missing_ok=True)
+    temporary_path = pathlib.Path(temporary)
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary_path), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary_path), load_ui=False)
+        reopened = state_report()
+        if reopened != after:
+            raise RuntimeError("anim.merge_animation save/reopen drift")
+        shutil.copyfile(temporary_path, fixture)
+        write_report(fixture, output, before, reopened)
+        print("anim-merge-animation-desktop-ok poll=true status=FINISHED mainMutation=animation_merged saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"anim-merge-animation-desktop-failed: {error}")
+        raise SystemExit(1)