import Database from "better-sqlite3";

export default function prepareDB(db: Database.Database) {
    // setup tiers table
    db.exec("CREATE TABLE IF NOT EXISTS tiers (tier INT PRIMARY KEY);");
    for (let i = 1; i <= 8; i++) {
        if (!db.prepare(`SELECT tier FROM tiers WHERE tier = ${i};`).pluck().get()) {
            db.prepare("INSERT INTO tiers VALUES (?)").run(i);
        }
    }

    // setup item types table
    db.exec("CREATE TABLE IF NOT EXISTS types (type VARCHAR PRIMARY KEY);")
    for (const type of ["cloth", "hide", "fee_crafting", "fee_market"]) {
        if(!db.prepare(`SELECT type FROM types WHERE type = '${type}'`).pluck().get()) {
            db.prepare("INSERT INTO types VALUES (?)").run(type);
        }
    }
    
    // create transactions table
    db.exec("CREATE TABLE IF NOT EXISTS transactions (id INTEGER PRIMARY KEY AUTOINCREMENT, timestamp INTEGER DEFAULT (unixepoch()), tier INT, type VARCHAR, cost INT, CONSTRAINT fk_tier FOREIGN KEY (tier) REFERENCES tiers(tier), CONSTRAINT fk_type FOREIGN KEY (type) REFERENCES types(type));");
}