const fs = require('fs/promises');
const chalk = require('chalk');
const path = require('path');
import QuillDB from "../_/quilldb.js"
import Titles from "./model/Titles.js"
import Members from './model/Members.js'
import Tokens from './model/Tokens.js'

export default class Database {
    titles = new Titles()
    members = new Members()
    tokens = new Tokens()

    fromID = {
        "HY": this.titles,
        "MEMBER": this.members,
        "TOKEN": this.tokens
    }

    constructor() {
        this.loadData()
    }

    async loadData() {
        const dbData = await fs.readFile(path.join(process.cwd(), 'db/db.json'), 'utf8');
        let dbJson;
        try {
            dbJson = JSON.parse(dbData);
        } catch {
            dbJson = []
        }
        let nodes = dbJson["nodes"];
        let entries = Object.entries(nodes)
        
        for(let i=0; i<entries.length; i++) {
            let entry = entries[i]
            let id = entry[0]; let node = entry[1];
            let type = id.split("-")[0]
            try {
                let collection = this.fromID[type]
                if(collection) {
                    collection.add(node)
                } else {
                    throw new Error("Type does not exist for node: ", id)
                }
            } catch(e) {
                throw e
            }
        }
    }

    generateUserID() {
        let id = this.labels["User"].length + 1;
        while (this.get.user(`user-${id}`)) {
            id++;
        }
        return `user-${id}`; // O(1) most of the time
    }
}