import io
from functions import *
from PyPDF2 import PdfReader
from fastapi import FastAPI, File, UploadFile
from fastapi.middleware.cors import CORSMiddleware


app = FastAPI(title = "ConversAI", root_path = "/api/v1")
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.post("/signup")
async def signup(username: str, password: str):
    try:
        response = createUser(username = username, password = password)
        output = {
            "output": response
        }
    except Exception as e:
        output = {
            "error": e
        }
    return output


@app.post("/login")
async def login(username: str, password: str):
    try:
        response = matchPassword(username = username, password = password)
        output = {
            "output": response
        }
    except Exception as e:
        output = {
            "error": e
        }
    return output


@app.get("/clear/{vectorstoreName}")
async def clearVectorStore(vectorStoreName: str):
    client.table(vectorStoreName).delete().neq("content", "").execute()
    return {
        "output": "SUCCESS"
    }


@app.post("/addPDF")
async def addPDFData(vectorstorename: str, pdf: UploadFile = File(...)):
    try:
        pdf = await pdf.read()
        reader = PdfReader(io.BytesIO(pdf))
        text = ""
        for page in reader.pages:
            text += page.extract_text()
        addDocuments(text = text, storename = vectorstorename)
        output = {
            "output": "SUCCESS"
        }
    except Exception as e:
        output = {
            "error": e
        }
    return output



@app.post("/addText")
async def addText(vectorstorename: str, text: str):
    try:
        addDocuments(text = text, storename = vectorstorename)
        output = {
            "output": "SUCCESS"
        }
    except Exception as e:
        output = {
            "error": e
        }
    return output


@app.get("/answerQuery")
async def answerQuery(query: str, vectorstorename: str, llmModel: str = "llama3-70b-8192"):
    try:
        response = answerQuery(query=query, vectorstorename=vectorstorename, llmModel=llmModel)
        output = {
            "output": response
        }
    except Exception as e:
        output = {
            "error": e
        }
    return output