{
  "$schema": "http://json-schema.org/draft-07/schema",
  "$id": "MigrationMetadataSchema",
  "description": "Schema of migration metadata",
  "type": "object",
  "required": [
    "version",
    "changes"
  ],
  "properties": {
    "version": {
      "type": "string",
      "description": "Version of the documented migration"
    },
    "libraries": {
      "type": "object",
      "description": "Map of dependencies for which the migration scripts should be checked with their associated version",
      "additionalProperties": {
        "type": "string"
      }
    },
    "changes": {
      "type": "array",
      "description": "List of all the changes contained in this version",
      "items": {
        "oneOf": [
          {
            "$ref": "#/definitions/ConfigChange"
          },
          {
            "$ref": "#/definitions/LocalizationChange"
          },
          {
            "$ref": "#/definitions/StyleChange"
          },
          {
            "$ref": "#/definitions/AssetChange"
          },
          {
            "$ref": "#/definitions/ComponentChange"
          },
          {
            "$ref": "#/definitions/RuleFactChange"
          }
        ]
      }
    }
  },
  "definitions": {
    "ConfigMigrationItem": {
      "type": "object",
      "required": [
        "libraryName"
      ],
      "properties": {
        "libraryName": {
          "type": "string",
          "description": "Library name"
        },
        "configName": {
          "type": "string",
          "description": "Configuration name"
        },
        "propertyName": {
          "type": "string",
          "description": "Configuration property name"
        }
      }
    },
    "LocalizationMigrationItem": {
      "type": "object",
      "required": [
        "key"
      ],
      "properties": {
        "key": {
          "type": "string",
          "description": "Localization key"
        }
      }
    },
    "StyleMigrationItem": {
      "type": "object",
      "required": [
        "name"
      ],
      "properties": {
        "name": {
          "type": "string",
          "description": "CSS variable name"
        }
      }
    },
    "AssetMigrationItem": {
      "type": "object",
      "required": [
        "path"
      ],
      "properties": {
        "path": {
          "type": "string",
          "description": "Path of the asset, starting from the root assets folder"
        }
      }
    },
    "ComponentMigrationItem": {
      "type": "object",
      "required": [
        "libraryName"
      ],
      "properties": {
        "libraryName": {
          "type": "string",
          "description": "Library name"
        },
        "componentName": {
          "type": "string",
          "description": "Component name"
        },
        "placeholderId": {
          "type": "string",
          "description": "Placeholder id"
        }
      }
    },
    "RuleFactMigrationItem": {
      "type": "object",
      "required": [
        "name"
      ],
      "properties": {
        "name": {
          "type": "string",
          "description": "Name of the fact"
        }
      }
    },
    "ConfigChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "CONFIG"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/ConfigMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/ConfigMigrationItem"
        }
      }
    },
    "LocalizationChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "LOCALIZATION"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/LocalizationMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/LocalizationMigrationItem"
        }
      }
    },
    "StyleChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "STYLE"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/StyleMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/StyleMigrationItem"
        }
      }
    },
    "AssetChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "ASSET"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/AssetMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/AssetMigrationItem"
        }
      }
    },
    "ComponentChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "COMPONENT"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/ComponentMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/ComponentMigrationItem"
        }
      }
    },
    "RuleFactChange": {
      "type": "object",
      "required": [
        "contentType",
        "before"
      ],
      "properties": {
        "contentType": {
          "type": "string",
          "description": "Metadata type",
          "const": "RULE_FACT"
        },
        "before": {
          "description": "Previous metadata value",
          "$ref": "#/definitions/RuleFactMigrationItem"
        },
        "after": {
          "description": "New metadata value",
          "$ref": "#/definitions/RuleFactMigrationItem"
        }
      }
    }
  }
}