import { Injectable } from '@nestjs/common';
import { ConnectionDto } from '../connection/dtos/connection';
import jwt from 'jsonwebtoken';
import { PartialType } from '@nestjs/swagger';

class PartialConnection extends PartialType(ConnectionDto) {}

@Injectable()
export class OauthService {
  generateStateFromRequest(prevState, req, type): string {
    if (req.route.path.includes('callback')) {
      return prevState;
    }
    const plugin: string = req.route.path.replace('/oauth/', '');

    const { query } = req;
    const {
      name,
      description,
      connector_id,
      connector_name,
      image_url,
      user_id,
      customer_id,
      customer_name,
      id,
    } = query;

    const properties = { plugin, credentials_type: 'oauth' };
    for (const key in query) {
      if (key.includes('properties.')) {
        const propertyKey = key.split('.')[1];
        properties[propertyKey] = query[key];
      }
    }

    const newConnection: PartialConnection = {
      name,
      description,
      connector_id,
      connector_name,
      image_url,
      user_id,
      customer_id,
      customer_name,
      type,
      properties,
      plugin,
      id,
    };
    return jwt.sign({ ...newConnection }, process.env.JWT_PRIVATE_KEY);
  }
}