import express from 'express';
import dotenv from 'dotenv';

import { RegisterNewUser, GetUserFromEmail, GetUserFromPubkey, GetKeypairFromEmail, Authneticate, CreateNewRequest, SetRequestResult } from './database.js';
import { verifyFirebaseToken } from './firebase.js';

dotenv.config();

const app = express();
import cors from 'cors';
app.use(cors());
app.use((err,req,res,next)=>{
    console.error(err.stack);
    res.status(500).send("Something went wrong!");
})

//----------------------------------------------------------------------------------------------------------------------------------------------------------------
app.get("/registerv1", async (req,res)=>{
    const {email, password} = req.query;

    if(!email || !password){
        res.status(403).json({error: "Missing credentials"});
        return;
    }

    const newUser = await RegisterNewUser(email,password);
    if(!newUser){
        res.status(403).json({error: "Email exists"});
    }

    res.status(201).json(newUser);
})

app.get("/register", async (req,res)=>{
    const {tokenId} = req.query;

    if(!tokenId){
        res.status(403).json({error: "Missing tokenId"});
        return;
    }
    const user = await verifyFirebaseToken(tokenId);
    if(!user){
        res.status(403).json({error:"Invalid tokenId. Auth failed"});
        return;
    }


    const newUser = await RegisterNewUser(user.uid,user.uid);

    if(!newUser){
        res.status(403).json({error: "User exists"});
    }

    res.status(201).json(newUser);
})

app.get("/login", async(req,res)=>{
    const {tokenId} = req.query;
    if(!tokenId){
        res.status(403).json({error:"Missing tokenId"})
        return;
    }

    const fuser = await verifyFirebaseToken(tokenId);
    if(!fuser){
        res.status(403).json({error:"Invalid tokenId. Auth failed"});
        return;
    }
    const email = fuser.uid;

    if(email){
        const user = await GetUserFromEmail(email);
        if(user){
            res.status(200).json(user);
        }else{
            res.status(404).json({error:"User couldnt be found"})
        }
    }
})

app.get("/authenticate", async(req,res)=>{
    const {email, password} = req.query;
    if(!email || !password){
        res.status(403).json({error:"Credentials missing"})
        return;
    }

    const authResult = await Authneticate(email,password);
    if(authResult){
        res.status(200).json({authenticated: true})
    }else{
        res.status(403).json({authenticated: false})
    }
})

app.get("/getKeypairWithToken", async(req,res)=>{
    const {tokenId} = req.query;
    if(!tokenId){
        res.status(403).json({error:"tokenId missing"})
        return;
    }

    const fuser = await verifyFirebaseToken(tokenId);
    if(!fuser){
        res.status(403).json({error:"Invalid tokenId. Auth failed"});
        return;
    }

    const user = await GetKeypairFromEmail(fuser.uid);
    res.status(200).json(user);
})

app.get("/getPubkey", async(req,res)=>{
    const {email}= req.query;

    if(!email){
        res.status(403).json({error: "Missing credentials"});
        return;
    }

    const user = await GetUserFromEmail(email);
    res.status(200).json(user);
})

app.get("/getKeypair", async(req,res)=>{
    const {email, apiKey}= req.query;

    if(!email || !apiKey){
        res.status(403).json({error: "Missing credentials"});
        return;
    }
    if(apiKey!= process.env.API_KEY){
        res.status(403).json({error: `Invalid Api Key`});
        console.log(`Provided api key: ${apiKey}`);
        console.log(`Correcte api key: ${process.env.API_KEY}`);
        return;
    }

    const user = await GetKeypairFromEmail(email);
    res.status(200).json(user);
})

app.get("/firebaseAuth", async (req,res)=>{
    const {tokenId} = req.query;

    if(!tokenId){
        res.status(403).json({error: "Invalid tokenID"});
        return;
    }

    const user = await verifyFirebaseToken(tokenId);
    if(user){
        res.status(200).json({status:"Success", user: user});
    }else{
        res.status(403).json({status:"Failed", user:null});
    }
})

app.get("/createNewRequest", async(req,res)=>{
    const id = await CreateNewRequest();

    res.status(200).json({id:id});
})

app.get("/completeRequest", async(req,res)=>{
    const {id,result}=req.query;

    if(!id || !result){
        res.status(403).json({error:"Missing parameters, need id and result"});
        return;
    }

    await SetRequestResult(id,result);

    res.status(200).json({status:"Success"});
})

app.get("/status", async(req,res)=>{
    res.status(200).json({status:"Running"});
})

//----------------------------------------------------------------------------------------------------------------------------------------------------------------


app.listen(process.env.EXPRESS_PORT, ()=>{
    console.log(`Server is listening on Port ${process.env.EXPRESS_PORT}`);
})