import { ObjectId } from 'bson';
import express from 'express';
import passport from 'passport';
import { MongoShelf } from '../models/shelf';
import { DB_NAME, getDatabaseClient } from '../db-utils';
import { MongoCategory } from '../models/category';
import { MongoUser } from '../models/user';
import { Word } from '../models/word';

export const userProfileRoutes = express.Router();

export const jwtAuthentication = passport.authenticate('jwt', { session: false });

userProfileRoutes.get('/profile/', jwtAuthentication, async (request, response) => {
    const user: MongoUser = (request.user as any);
    response.json({
        _id: user._id,
        name: user.name,
        email: user.email,
        isVerified: user.isVerified,
        categories: user.categories,
        uncategorised: user.uncategorised
    });
    return;
});


userProfileRoutes.get('/profile/deep-copy/', jwtAuthentication, async (request, response) => {
    const user: MongoUser = (request.user as any);
    const categoryCollection = getDatabaseClient().db(DB_NAME).collection<MongoCategory>('categories');
    const shelfCollection = getDatabaseClient().db(DB_NAME).collection<MongoShelf>('shelves');
    const wordCollection = getDatabaseClient().db(DB_NAME).collection<Word>('words');

    let deepCategories = [];

    for (let i = 0; i < user.categories.length; i += 1) {
        let deepShelves = [];

        const matchedCategory: any = await categoryCollection.findOne({
            _id: new ObjectId(user.categories[i])
        });

        if (matchedCategory && matchedCategory.shelves) {
            for (let j = 0; j < matchedCategory.shelves.length; j += 1) {
                let deepAddedWords = [];
    
                const matchedShelf: any = await shelfCollection.findOne({
                    _id: new ObjectId(matchedCategory.shelves[j])
                });
    
                
                if (matchedShelf && matchedShelf.addedWords) {
                    for (let k = 0; k < matchedShelf.addedWords.length; k += 1) {
                        const matchedWord = await wordCollection.findOne({
                            _id: new ObjectId(matchedShelf.addedWords[k].word)
                        });

                        if (matchedWord) {
                            deepAddedWords.push(matchedWord);
                        }
                    }
                }
    
                matchedShelf.addedWords = deepAddedWords;
                
                
                deepShelves.push(matchedShelf);
            }
        }

        matchedCategory.shelves = deepShelves;
        
        deepCategories.push(matchedCategory);

    }

    let deepUncategorisedAddedWords = [];
    
    const matchedUncategoisedShelf: any = await shelfCollection.findOne({
        _id: new ObjectId(user.uncategorised)
    });
    
    if (matchedUncategoisedShelf && matchedUncategoisedShelf.addedWords) {
        for (let k = 0; k < matchedUncategoisedShelf.addedWords.length; k += 1) {
            const matchedWord = await wordCollection.findOne({
                _id: new ObjectId(matchedUncategoisedShelf.addedWords[k].word)
            });

            if (matchedWord) {
                deepUncategorisedAddedWords.push(matchedWord);
            }
        }

        matchedUncategoisedShelf.addedWords = deepUncategorisedAddedWords;
    }

    response.json({
        _id: user._id,
        name: user.name,
        email: user.email,
        isVerified: user.isVerified,
        categories: deepCategories,
        uncategorised: matchedUncategoisedShelf
    });



    return;
});