package db

import (
        "database/sql"
        _ "github.com/mattn/go-sqlite3"
    )

var Database *sql.DB

func DbConnect() {
   Database, _ = sql.Open("sqlite3", "db.db")
}

func DbBuild()  {
   statement, _ := Database.Prepare("CREATE TABLE IF NOT EXISTS Category (id INTEGER PRIMARY KEY, name TEXT)")
   statement.Exec()
   statement, _ = Database.Prepare("CREATE TABLE IF NOT EXISTS Product (id INTEGER PRIMARY KEY, categoryId INTEGER, name TEXT, description TEXT, imgUrl TEXT, quantity INTEGER, price INTEGER)")
   statement.Exec()
   statement, _ = Database.Prepare("CREATE TABLE IF NOT EXISTS PurchasementProduct (id INTEGER PRIMARY KEY, purchasementId INTEGER, productId INTEGER, quantity INTEGER, priceTotal INTEGER)")
   statement.Exec()
   statement, _ = Database.Prepare("CREATE TABLE IF NOT EXISTS Purchasement (id INTEGER PRIMARY KEY, priceTotal TEXT, firstName TEXT, lastName TEXT, paymentMethod INTEGER, deliveryDate TEXT)")
   statement.Exec()
}

func DbInsert(table, columns, values string)  {
   statement, _ := Database.Prepare("INSERT INTO "+ table +" ("+ columns +") VALUES ("+ values +")")
   statement.Exec()
}

func DbSelect(table, columns string) *sql.Rows {
   rows, _ := Database.Query("SELECT "+ columns +" FROM "+ table)
   return rows
}

func DbUpdate(table, column, columnValue, conditionValue string) {
   statement, _ := Database.Prepare("UPDATE "+ table + " SET " + column + " = "+ columnValue + " WHERE id = " + conditionValue)
   statement.Exec()
}