{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/lucianum7/AuditorProcessual/schemas/visual_element.schema.json",
  "title": "Visual element inventory record",
  "type": "object",
  "required": ["image_id", "page_pdf", "kind", "location", "semantic_description", "description_source"],
  "properties": {
    "image_id": {"type": "string", "pattern": "^P[0-9]{4}-(?:I[0-9]{3}|SCAN)$"},
    "page_pdf": {"type": "integer", "minimum": 1},
    "kind": {"enum": ["embedded_image", "referenced_image", "page_scan"]},
    "asset_class": {"enum": ["visual_asset", "technical_artifact", "qr_code", "logo", "document_scan", "photo", "unknown"]},
    "visual_class": {"type": "string"},
    "unique_image_id": {"type": "string", "pattern": "^IMG-[A-Za-z0-9_-]+$"},
    "relevant": {"type": "boolean"},
    "occurrence_index": {"type": "integer", "minimum": 1},
    "source_name": {"type": "string"},
    "source_reference": {"type": "string"},
    "alt_text": {"type": "string"},
    "image_path": {"type": "string"},
    "relative_path": {"type": "string"},
    "zoom_relative_path": {"type": "string"},
    "format": {"type": "string"},
    "width": {"type": ["integer", "null"], "minimum": 1},
    "height": {"type": ["integer", "null"], "minimum": 1},
    "sha256": {"type": "string", "pattern": "^[a-f0-9]{64}$"},
    "location": {"type": "string"},
    "semantic_description": {"type": "string", "minLength": 1},
    "visible_text": {"type": "string"},
    "ocr_text": {"type": "string"},
    "objects": {"type": "array", "items": {"type": "string"}},
    "people": {"type": "array", "items": {"type": "string"}},
    "tables": {"type": "array", "items": {"type": "string"}},
    "confidence": {"enum": ["high", "medium", "low", "not_assessed"]},
    "description_source": {"type": "string"}
  },
  "additionalProperties": true
}