const fs = require('fs');

const databaseFile = "mytest.db"

fs.readFile(databaseFile, (err, data) => {
    if (err) {
        fs.openSync(databaseFile, 'w');
        const db = require('better-sqlite3')(databaseFile);
        // Bootstrap the db
        db.exec(`
        CREATE TABLE IF NOT EXISTS accounts (
        number integer NOT NULL,
        name text NOT NULL,
        qualifiedName text NOT NULL UNIQUE,
        parentAccount text,
        description text NOT NULL,
        type TEXT NOT NULL
        );

        CREATE TABLE IF NOT EXISTS transactions (
        transaction_id integer PRIMARY KEY,
        postingDate text NOT NULL,
        valueDate text,
        title text NOT NULL
        );

        CREATE TABLE IF NOT EXISTS transaction_entries (
        transaction_id int,
        account_name text NOT NULL,
        amount float,
        label text,
        FOREIGN KEY (transaction_id) REFERENCES transactions (transaction_id) FOREIGN KEY (account_name) REFERENCES accounts (qualifiedName) PRIMARY KEY (transaction_id, account_name)
        );
`)

        create_initial_accounts()
    }
})
// DB
const db = require('better-sqlite3')(databaseFile);

function create_initial_accounts() {
    fs.readFile("accounts.json", "utf8", (err, jsonString) => {
        if (err) {
            console.log("Error reading the JSON file:", err);
            response.send("error")
        }
        try {
            account_data = JSON.parse(jsonString);
            for (let i = 0; i < account_data.length; i++) {
                account = account_data[i]
                console.log(account_data[i]["qualifiedName"])
                parentAccount = account["qualifiedName"].split(":")
                parentAccount.pop()
                parentAccount = parentAccount.join(":")
                if (parentAccount == "") {
                    parentAccount = undefined
                }
                const new_acc = db
                    .prepare(
                        `INSERT INTO accounts (number, name, qualifiedName, description, type, parentAccount) VALUES (?, ?, ? ,?, ?, ?)`,
                    )
                    .run(account["number"], account["name"], account["qualifiedName"], "Initial Account", account["type"], parentAccount);

            }
        }
            catch (err) {
                console.log("Error parsing JSON string:", err);
        }
    });
}




module.exports = { db, create_initial_accounts }