from fastapi import FastAPI
from fastapi.openapi.models import AdditionalResponse
from pydantic import BaseModel
from starlette.responses import JSONResponse
from starlette.testclient import TestClient

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float = None


class Response400(BaseModel):
    '''HTTP 4xx Response Schema'''
    title: str
    detail: str
    error_code: int # functional error ref


response_403 = AdditionalResponse(
    status_code = 403,
    description = 'Forbidden',
    models = [
        Response400,
    ],
)

additional_responses = [
    response_403,
]

@app.api_route(
    "/items/{item_id}",
    methods=["GET"],
    additional_responses=additional_responses,
)
def get_items(item_id: str):
    return {"item_id": item_id}


def get_not_decorated(item_id: str):
    return {"item_id": item_id}


app.add_api_route(
    "/items-not-decorated/{item_id}",
    get_not_decorated,
    additional_responses=additional_responses,
)


@app.delete(
    "/items/{item_id}",
    additional_responses=additional_responses,
)
def delete_item(item_id: str, item: Item):
    return {"item_id": item_id, "item": item}


@app.head(
    "/items/{item_id}",
    additional_responses=additional_responses,
)
def head_item(item_id: str):
    return JSONResponse(headers={"x-fastapi-item-id": item_id})


@app.options(
    "/items/{item_id}",
    additional_responses=additional_responses,
)
def options_item(item_id: str):
    return JSONResponse(headers={"x-fastapi-item-id": item_id})


@app.patch(
    "/items/{item_id}",
    additional_responses=additional_responses,
)
def patch_item(item_id: str, item: Item):
    return {"item_id": item_id, "item": item}


@app.trace(
    "/items/{item_id}",
    additional_responses=additional_responses,
)
def trace_item(item_id: str):
    return JSONResponse(media_type="message/http")


client = TestClient(app)

openapi_schema = {
    "openapi": "3.0.2",
    "info": {
        "title": "Fast API",
        "version": "0.1.0"
    },
    "paths": {
        "/items/{item_id}": {
            "get": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Get Items Get",
                "operationId":
                "get_items_items__item_id__get",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
            },
            "delete": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Delete Item Delete",
                "operationId":
                "delete_item_items__item_id__delete",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
                "requestBody": {
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/Item"
                            }
                        }
                    },
                    "required": True,
                },
            },
            "options": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Options Item Options",
                "operationId":
                "options_item_items__item_id__options",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
            },
            "head": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Head Item Head",
                "operationId":
                "head_item_items__item_id__head",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
            },
            "patch": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Patch Item Patch",
                "operationId":
                "patch_item_items__item_id__patch",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
                "requestBody": {
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/Item"
                            }
                        }
                    },
                    "required": True,
                },
            },
            "trace": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Trace Item Trace",
                "operationId":
                "trace_item_items__item_id__trace",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
            },
        },
        "/items-not-decorated/{item_id}": {
            "get": {
                "responses": {
                    "200": {
                        "description": "Successful Response",
                        "content": {
                            "application/json": {
                                "schema": {}
                            }
                        },
                    },
                    "403": {
                        "description": "Forbidden",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Response400"
                                }
                            }
                        },
                    },
                    "422": {
                        "description": "Validation Error",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref":
                                    "#/components/schemas/HTTPValidationError"
                                }
                            }
                        },
                    },
                },
                "summary":
                "Get Not Decorated Get",
                "operationId":
                "get_not_decorated_items-not-decorated__item_id__get",
                "parameters": [{
                    "required": True,
                    "schema": {
                        "title": "Item_Id",
                        "type": "string"
                    },
                    "name": "item_id",
                    "in": "path",
                }],
            }
        },
    },
    "components": {
        "schemas": {
            "Item": {
                "title": "Item",
                "required": ["name"],
                "type": "object",
                "properties": {
                    "name": {
                        "title": "Name",
                        "type": "string"
                    },
                    "price": {
                        "title": "Price",
                        "type": "number"
                    },
                },
            },
            "Response400": {
                "title": "Response400",
                "description": "HTTP 4xx Response Schema",
                "required": ["title", "detail", "error_code"],
                "type": "object",
                "properties": {
                    "title": {
                        "title": "Title",
                        "type": "string"
                    },
                    "detail": {
                        "title": "Detail",
                        "type": "string"
                    },
                    "error_code": {
                        "title": "Error_Code",
                        "type": "integer"
                    },
                },
            },
            "ValidationError": {
                "title": "ValidationError",
                "required": ["loc", "msg", "type"],
                "type": "object",
                "properties": {
                    "loc": {
                        "title": "Location",
                        "type": "array",
                        "items": {
                            "type": "string"
                        },
                    },
                    "msg": {
                        "title": "Message",
                        "type": "string"
                    },
                    "type": {
                        "title": "Error Type",
                        "type": "string"
                    },
                },
            },
            "HTTPValidationError": {
                "title": "HTTPValidationError",
                "type": "object",
                "properties": {
                    "detail": {
                        "title": "Detail",
                        "type": "array",
                        "items": {
                            "$ref": "#/components/schemas/ValidationError"
                        },
                    }
                },
            },
        }
    },
}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200
    assert response.json() == openapi_schema


def test_get_api_route():
    response = client.get("/items/foo")
    assert response.status_code == 200
    assert response.json() == {"item_id": "foo"}


def test_get_api_route_not_decorated():
    response = client.get("/items-not-decorated/foo")
    assert response.status_code == 200
    assert response.json() == {"item_id": "foo"}


def test_delete():
    response = client.delete("/items/foo", json={"name": "Foo"})
    assert response.status_code == 200
    assert response.json() == {
        "item_id": "foo",
        "item": {
            "name": "Foo",
            "price": None
        }
    }


def test_head():
    response = client.head("/items/foo")
    assert response.status_code == 200
    assert response.headers["x-fastapi-item-id"] == "foo"


def test_options():
    response = client.options("/items/foo")
    assert response.status_code == 200
    assert response.headers["x-fastapi-item-id"] == "foo"


def test_patch():
    response = client.patch("/items/foo", json={"name": "Foo"})
    assert response.status_code == 200
    assert response.json() == {
        "item_id": "foo",
        "item": {
            "name": "Foo",
            "price": None
        }
    }


def test_trace():
    response = client.request("trace", "/items/foo")
    assert response.status_code == 200
    assert response.headers["content-type"] == "message/http"