{
  "openapi": "3.0.0",
  "info": {
    "title": "Example API 7",
    "description": "An API to test converting Open API Specs 3.0 to GraphQL",
    "version": "1.0.0",
    "termsOfService": "http://example.com/terms/",
    "license": {
      "name": "Apache 2.0",
      "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
    }
  },
  "externalDocs": {
    "url": "http://example.com/docs",
    "description": "Some more natural language description."
  },
  "tags": [
    {
      "name": "test",
      "description": "Indicates this API is for testing"
    }
  ],
  "servers": [
    {
      "url": "http://localhost:{port}/{basePath}",
      "description": "The location of the local test server.",
      "variables": {
        "port": {
          "default": "3007"
        },
        "basePath": {
          "default": "api"
        }
      }
    },
    {
      "url": "mqtt://localhost:{port}/{basePath}",
      "description": "The location of the local MQTT test broker.",
      "variables": {
        "port": {
          "default": "1885"
        },
        "basePath": {
          "default": "api"
        }
      }
    }
  ],
  "paths": {
    "/user": {
      "get": {
        "description": "Return a user.",
        "responses": {
          "202": {
            "description": "A user.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/User"
                }
              }
            }
          }
        }
      }
    },
    "/devices": {
      "get": {
        "operationId": "findDevices",
        "description": "Return a device collection.",
        "responses": {
          "200": {
            "description": "A device collection",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "description": "The device collection",
                  "items": {
                    "$ref": "#/components/schemas/Device"
                  }
                }
              }
            }
          }
        }
      },
      "post": {
        "operationId": "createDevice",
        "description": "Create and return a device.",
        "requestBody": {
          "$ref": "#/components/requestBodies/DeviceBody"
        },
        "responses": {
          "200": {
            "$ref": "#/components/responses/DeviceInstance"
          },
          "default": {
            "$ref": "#/components/responses/GeneralError"
          }
        },
        "callbacks": {
          "deviceCreated": {
            "$ref": "#/components/callbacks/DevicesEvent"
          }
        }
      }
    },
    "/devices/{deviceName}": {
      "get": {
        "operationId": "findDeviceByName",
        "description": "Find a device by name.",
        "parameters": [
          {
            "name": "deviceName",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "$ref": "#/components/responses/DeviceInstance"
          },
          "default": {
            "$ref": "#/components/responses/GeneralError"
          }
        }
      },
      "put": {
        "operationId": "replaceDeviceByName",
        "description": "Replace a device by name.",
        "parameters": [
          {
            "name": "deviceName",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "requestBody": {
          "$ref": "#/components/requestBodies/DeviceBody"
        },
        "responses": {
          "200": {
            "$ref": "#/components/responses/DeviceInstance"
          },
          "default": {
            "$ref": "#/components/responses/GeneralError"
          }
        },
        "callbacks": {
          "deviceUpdated": {
            "$ref": "#/components/callbacks/DevicesEvent"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "User": {
        "type": "object",
        "description": "A user represents a natural person",
        "properties": {
          "name": {
            "type": "string",
            "description": "The legal name of a user"
          }
        }
      },
      "Device": {
        "type": "object",
        "description": "A device is an object connected to the network",
        "properties": {
          "name": {
            "type": "string",
            "description": "The device name in the network"
          },
          "userName": {
            "type": "string",
            "description": "The device owner Name"
          },
          "status": {
            "type": "boolean"
          }
        },
        "required": ["name", "userName"]
      },
      "Topic": {
        "type": "object",
        "description": "A topic is used to listen events",
        "properties": {
          "userName": {
            "type": "string",
            "description": "The device owner"
          },
          "deviceName": {
            "type": "string",
            "description": "The device name"
          },
          "method": {
            "type": "string",
            "description": "The device method to watch",
            "example": "Equivalent to HTTP methods"
          }
        },
        "required": ["userName", "method"]
      },
      "Error": {
        "type": "object",
        "description": "A topic is used to listen an event",
        "properties": {
          "code": {
            "type": "string",
            "description": "Error code"
          },
          "message": {
            "type": "string",
            "description": "Error message"
          }
        },
        "required": ["code", "message"]
      }
    },
    "requestBodies": {
      "EventsBody": {
        "description": "Properties to generate the event path",
        "required": true,
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/Topic"
            }
          }
        }
      },
      "DeviceBody": {
        "description": "Device instance to update / create",
        "required": true,
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/Device"
            }
          }
        }
      }
    },
    "responses": {
      "DeviceInstance": {
        "description": "Device instance",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/Device"
            }
          }
        }
      },
      "GeneralError": {
        "description": "Error reponse",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/Error"
            }
          }
        }
      }
    },
    "callbacks": {
      "DevicesEvent": {
        "/api/{$request.body#/userName}/devices/{$request.body#/method}/+": {
          "post": {
            "operationId": "devicesEventListener",
            "description": "Listen all devices events owned by userName",
            "requestBody": {
              "$ref": "#/components/requestBodies/EventsBody"
            },
            "responses": {
              "200": {
                "$ref": "#/components/responses/DeviceInstance"
              }
            }
          }
        }
      }
    }
  }
}