{
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "title": {
      "type": "string"
    },
    "image": {
      "type": "string"
    },
    "instruction": {
      "type": "string"
    },
    "requirements": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "default": []
    },
    "stages": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$"
          },
          "name": {
            "type": "string"
          },
          "requirements": {
            "$ref": "#/properties/requirements",
            "default": []
          },
          "condition": {
            "type": "object",
            "properties": {
              "command": {
                "type": "string"
              },
              "output": {
                "type": "string"
              },
              "error": {
                "type": "string"
              },
              "pwd": {
                "type": "string"
              },
              "files": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "path": {
                      "type": "string"
                    },
                    "type": {
                      "type": "string",
                      "enum": ["file", "directory"]
                    },
                    "exists": {
                      "type": "boolean"
                    }
                  },
                  "required": ["path", "type", "exists"],
                  "additionalProperties": false
                }
              },
              "or": {
                "type": "array",
                "items": {
                  "$ref": "#/properties/stages/items/properties/condition"
                }
              },
              "not": {
                "$ref": "#/properties/stages/items/properties/condition"
              }
            },
            "additionalProperties": false
          },
          "response": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "enum": ["narrative", "dialogue"],
                "default": "narrative"
              },
              "content": {
                "type": "string"
              },
              "hint": {
                "type": "string"
              }
            },
            "required": ["content"],
            "additionalProperties": false
          },
          "exceptions": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string"
                },
                "condition": {
                  "$ref": "#/properties/stages/items/properties/condition"
                },
                "response": {
                  "$ref": "#/properties/stages/items/properties/response"
                },
                "catchAll": {
                  "type": "boolean",
                  "default": false
                }
              },
              "required": ["id", "condition", "response"],
              "additionalProperties": false
            }
          }
        },
        "required": ["id", "condition", "response"],
        "additionalProperties": false
      }
    },
    "exceptions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "$ref": "#/properties/stages/items/properties/exceptions/items/properties/id"
          },
          "condition": {
            "$ref": "#/properties/stages/items/properties/condition"
          },
          "response": {
            "$ref": "#/properties/stages/items/properties/response"
          },
          "requirements": {
            "$ref": "#/properties/requirements",
            "default": []
          }
        },
        "required": ["id", "condition", "response"],
        "additionalProperties": false
      }
    }
  },
  "required": ["id", "title", "image", "instruction", "stages"],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}