{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "DSLO v0.7 Semantic Substrate Schema",
  "description": "Formal schema defining DSLO v0.7 geometry primitives, transitions, surfaces, invariants, examples, and metadata.",

  "type": "object",
  "properties": {
    "dslo_version": {
      "type": "string",
      "const": "0.7"
    },

    "geometry": {
      "type": "object",
      "properties": {
        "primitives": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "definition": { "type": "string" },
                "parameters": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "invariants": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["definition", "parameters", "invariants"]
            }
          }
        }
      },
      "required": ["primitives"]
    },

    "transitions": {
      "type": "object",
      "properties": {
        "transitions": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "definition": { "type": "string" },
                "parameters": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "invariants": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["definition", "parameters", "invariants"]
            }
          }
        }
      },
      "required": ["transitions"]
    },

    "surfaces": {
      "type": "object",
      "properties": {
        "bindings": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "description": { "type": "string" },
                "geometry_primitives": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "constraints": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["description", "geometry_primitives", "constraints"]
            }
          }
        }
      },
      "required": ["bindings"]
    },

    "invariants": {
      "type": "object",
      "properties": {
        "legality": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "definition": { "type": "string" },
                "constraints": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "applies_to": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["definition", "constraints", "applies_to"]
            }
          }
        },
        "collapse_safety": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "definition": { "type": "string" },
                "constraints": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "applies_to": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["definition", "constraints", "applies_to"]
            }
          }
        }
      },
      "required": ["legality", "collapse_safety"]
    },

    "examples": {
      "type": "object",
      "properties": {
        "examples": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "title": { "type": "string" },
                "description": { "type": "string" },
                "geometry_primitives": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "invariants": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "surface": { "type": "string" }
              },
              "required": ["title", "description", "geometry_primitives", "invariants", "surface"]
            }
          }
        }
      },
      "required": ["examples"]
    },

    "substrate_metadata": {
      "type": "object",
      "properties": {
        "substrates": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "object",
              "properties": {
                "description": { "type": "string" },
                "geometry_primitives": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "invariants": {
                  "type": "array",
                  "items": { "type": "string" }
                },
                "transition_modes": {
                  "type": "array",
                  "items": { "type": "string" }
                }
              },
              "required": ["description", "geometry_primitives", "invariants", "transition_modes"]
            }
          }
        }
      },
      "required": ["substrates"]
    }
  },

  "required": [
    "dslo_version",
    "geometry",
    "transitions",
    "surfaces",
    "invariants",
    "examples",
    "substrate_metadata"
  ]
}