"""Opens the saved fork and reports what a user would stumble over: missing images, absolute paths, what is hidden.

    blender -b --factory-startup models/M_Ship_v2_interior_season2.blend --python build/verify_file.py
"""
import json
import os

import bpy

out = {"file": bpy.data.filepath, "objects": len(bpy.data.objects), "meshes": len(bpy.data.meshes), "materials": len(bpy.data.materials),
       "images": len(bpy.data.images)}
missing, absolute, where = [], [], {}
packed = 0
for img in bpy.data.images:
    if img.source != "FILE" or not img.filepath:
        continue
    p = bpy.path.abspath(img.filepath, library=img.library)
    if img.packed_file is not None:
        packed += 1                      # (the ship file's own reference pictures and textures: inside the .blend)
    elif not os.path.isfile(p):
        missing.append(img.filepath)
    if not img.filepath.startswith("//") and img.packed_file is None:
        absolute.append(img.filepath)
    key = os.path.normpath(os.path.dirname(p)).split(os.sep)
    k = os.sep.join(key[:5])
    where[k] = where.get(k, 0) + 1
out["images_missing"] = missing[:10]
out["images_missing_count"] = len(missing)
out["images_packed_in_the_file"] = packed
out["images_with_absolute_path"] = absolute[:10]
out["image_folders"] = where
out["libraries"] = [(l.filepath, os.path.isfile(bpy.path.abspath(l.filepath))) for l in bpy.data.libraries]


def walk(lc, depth=0, acc=None):
    acc = acc if acc is not None else []
    acc.append(("  " * depth + lc.name, len(lc.collection.objects), "EXCLUDED" if lc.exclude else ""))
    if depth < 2:
        for c in lc.children:
            walk(c, depth + 1, acc)
    return acc


scene = bpy.data.scenes.get("M-Ship v2 | REFERENCE ASSET") or bpy.context.scene
out["scene"] = scene.name
out["collections"] = walk(scene.view_layers[0].layer_collection)
out["mask_modifiers"] = [(o.name, m.name) for o in bpy.data.objects for m in o.modifiers if m.type == "MASK"]
top = bpy.data.collections.get("10 INTERIOR | Season 2 layout")
no_path = [o.name for o in top.all_objects if o.type == "MESH" and not o.data.get("ue_mesh") and not o.get("ue_decal_material")
           and not o.data.name.startswith(("SM_wlombbzdw", "SM_DockArm", "SK_DockArm", "WGT_DockArm", "DECAL_"))]
out["layout_meshes_without_unreal_path (own parts)"] = no_path
out["texts"] = [t.name for t in bpy.data.texts]
out["unsaved_images"] = [i.name for i in bpy.data.images if i.is_dirty]
print("VERIFY " + json.dumps(out))