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# import declaration
from fastapi import FastAPI, Form, Request
from fastapi.responses import PlainTextResponse, HTMLResponse, FileResponse
from fastapi.staticfiles import StaticFiles
from fastapi.templating import Jinja2Templates
from pydantic import BaseModel
import random
import uvicorn
# initialization
app = FastAPI()
# mount static folder to serve static files
app.mount("/static", StaticFiles(directory="static"), name="static")
# Jinja2 template instance for returning webpage via template engine
templates = Jinja2Templates(directory="templates")
# Pydantic data model class
class Item(BaseModel):
#language: str
language = 'english'
# hello world, GET method, return string
@app.get("/", response_class=PlainTextResponse)
async def hello():
return "Hello World!"
# random number, GET method, return string
@app.get('/random-number', response_class=PlainTextResponse)
async def random_number():
return str(random.randrange(100))
# check isAlpha, GET method, query parameter, return JSON
async def alpha(text: str):
result = {'text': text, 'is_alpha' : text.isalpha()}
return result
# create new user, POST method, form fields, return JSON'/create-user')
async def create_user(id: str = Form(...), name: str = Form(...)):
# code for authentication, validation, update database
data = {'id': id, 'name': name}
result = {'status_code': '0', 'status_message' : 'Success', 'data': data}
return result
# update language, PUT method, JSON input, return string
@app.put('/update-language', response_class=PlainTextResponse)
async def update_language(item: Item):
language = item.language
return "Successfully updated language to %s" % (language)
# serve webpage, GET method, return HTML
@app.get('/get-webpage', response_class=HTMLResponse)
async def get_webpage(request: Request):
return templates.TemplateResponse("index.html", {"request": request, "message": "Contact Us"})
# file response, GET method, return file as attachment
async def get_language_file(language: str):
file_name = "%s.json" % (language)
file_path = "./static/language/" + file_name
return FileResponse(path=file_path, headers={"Content-Disposition": "attachment; filename=" + file_name})
# main
if __name__ == '__main__':'myapp:app', host='', port=8000)
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