{
    "openapi": "3.0.0",
    "info": {
        "description": "A simple bookshop API",
        "title": "bookshop",
        "version": "1.0.0"
    },
    "servers": [
        {
            "url": "https://api.yoursite.com/"
        }
    ],
    "tags": [],
    "paths": {
        "/books": {
            "get": {
                "summary": "Get all instances of Books",
                "tags": [
                    "Books"
                ],
                "parameters": [],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "type": "array",
                                    "items": {
                                        "$ref": "#/components/schemas/Books"
                                    }
                                }
                            }
                        }
                    },
                    "400": {
                        "$ref": "#/components/responses/400"
                    },
                    "401": {
                        "$ref": "#/components/responses/401"
                    },
                    "403": {
                        "$ref": "#/components/responses/403"
                    },
                    "500": {
                        "$ref": "#/components/responses/500"
                    },
                    "504": {
                        "$ref": "#/components/responses/504"
                    }
                }
            }
        },
        "/books/{id}": {
            "get": {
                "summary": "Retrieve the specified instance of Books by id",
                "tags": [
                    "Books"
                ],
                "parameters": [
                    {
                        "in": "path",
                        "name": "id",
                        "description": "id of the Books",
                        "required": true,
                        "schema": {
                            "type": "integer"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Books"
                                }
                            }
                        }
                    },
                    "400": {
                        "$ref": "#/components/responses/400"
                    },
                    "401": {
                        "$ref": "#/components/responses/401"
                    },
                    "403": {
                        "$ref": "#/components/responses/403"
                    },
                    "500": {
                        "$ref": "#/components/responses/500"
                    },
                    "504": {
                        "$ref": "#/components/responses/504"
                    }
                }
            }
        },
        "/orders": {
            "get": {
                "summary": "Get all instances of Orders",
                "tags": [
                    "Orders"
                ],
                "parameters": [],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "type": "array",
                                    "items": {
                                        "$ref": "#/components/schemas/Orders"
                                    }
                                }
                            }
                        }
                    },
                    "400": {
                        "$ref": "#/components/responses/400"
                    },
                    "401": {
                        "$ref": "#/components/responses/401"
                    },
                    "403": {
                        "$ref": "#/components/responses/403"
                    },
                    "500": {
                        "$ref": "#/components/responses/500"
                    },
                    "504": {
                        "$ref": "#/components/responses/504"
                    }
                }
            }
        },
        "/orders/{id}": {
            "get": {
                "summary": "Retrieve the specified instance of Orders by id",
                "tags": [
                    "Orders"
                ],
                "parameters": [
                    {
                        "in": "path",
                        "name": "id",
                        "description": "id of the Orders",
                        "required": true,
                        "schema": {
                            "type": "integer"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Orders"
                                }
                            }
                        }
                    },
                    "400": {
                        "$ref": "#/components/responses/400"
                    },
                    "401": {
                        "$ref": "#/components/responses/401"
                    },
                    "403": {
                        "$ref": "#/components/responses/403"
                    },
                    "500": {
                        "$ref": "#/components/responses/500"
                    },
                    "504": {
                        "$ref": "#/components/responses/504"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "Books": {
                "type": "object",
                "properties": {
                    "id": {
                        "type": "integer",
                        "description": "Unique identifier for book",
                        "example": "1"
                    },
                    "title": {
                        "type": "string",
                        "description": "Book title",
                        "example": "A tale of two cities"
                    },
                    "author": {
                        "type": "string",
                        "description": "Book author",
                        "example": "Charles Dickens"
                    }
                }
            },
            "Orders": {
                "type": "object",
                "properties": {
                    "id": {
                        "type": "integer",
                        "description": "Unique order ID",
                        "example": "100"
                    },
                    "bookId": {
                        "type": "integer",
                        "description": "Book ID in the order",
                        "example": "1"
                    },
                    "name": {
                        "type": "string",
                        "description": "Name of customer",
                        "example": "Jo Blogs"
                    },
                    "address": {
                        "type": "string",
                        "description": "Address to dispatch order to",
                        "example": "12 North Street"
                    },
                    "date": {
                        "type": "string",
                        "description": "Date of order",
                        "example": "2022-01-01"
                    }
                }
            }
        },
        "responses": {
            "400": {
                "description": "Bad Request",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "BAD_REQUEST"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "Bad request in body/params/headers"
                                }
                            }
                        }
                    }
                }
            },
            "401": {
                "description": "Unauthorized",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "UNAUTHORIZED"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "Authentication error"
                                }
                            }
                        }
                    }
                }
            },
            "403": {
                "description": "Forbidden",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "FORBIDDEN"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "You cannot access this resource"
                                }
                            }
                        }
                    }
                }
            },
            "404": {
                "description": "Not Found",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "RESOURCE_NOT_FOUND"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "The resource with id XX cannot be found"
                                }
                            }
                        }
                    }
                }
            },
            "500": {
                "description": "Internal Server Error",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "UNEXPECTED_SERVER_ERROR"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "The server encountered an error"
                                }
                            }
                        }
                    }
                }
            },
            "504": {
                "description": "Gateway Timeout",
                "content": {
                    "application/json": {
                        "schema": {
                            "type": "object",
                            "properties": {
                                "errorCode": {
                                    "type": "string",
                                    "enum": [
                                        "REQUEST_TIMEOUT"
                                    ]
                                },
                                "errorDescription": {
                                    "type": "string",
                                    "example": "The server encountered a timeout"
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}