176 lines
7.0 KiB
C#
176 lines
7.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data.SQLite;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using compabetov2.database;
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using compabetov2.database.modelos;
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namespace compabetov2.database
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{
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internal class DAO
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{
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public static bool iniciarSesionDAO(String usuario, String contra)
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{
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var db_conexion = new Conexion();
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try
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{
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using (SQLiteConnection conexion = db_conexion.get_connection()) {
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conexion.Open();
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string sql = "SELECT usuario, contra FROM Login WHERE usuario = @param0";
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SQLiteCommand command = new SQLiteCommand(sql, conexion);
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command.Parameters.AddWithValue($"@param{0}", usuario);
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SQLiteDataReader reader = command.ExecuteReader();
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if (reader.HasRows)
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{
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while (reader.Read())
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{
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if (reader["contra"].Equals(contra))
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{
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conexion.Close();
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return true;
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}
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else
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{
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MessageBox.Show("Usuario o contraseña incorrectos");
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conexion.Close();
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return false;
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}
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}
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MessageBox.Show("Usuario o contraseña incorrectos");
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conexion.Close();
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return false;
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}
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else
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{
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MessageBox.Show("Usuario o contraseña incorrectos");
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conexion.Close();
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return false;
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}
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}
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}
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catch (SQLiteException ex)
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{
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if (ex.Message.Contains("no such table"))
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{
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crearDB();
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MessageBox.Show("La base de datos fue creada vuelva a intentar");
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return false;
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}
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else
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{
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MessageBox.Show(ex.Message);
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return false;
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}
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}
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}
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public static SQLiteDataReader conseguirProductosDAO()
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{
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SQLiteDataReader reader = null;
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var db_conexion = new Conexion();
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try
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{
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using (SQLiteConnection conexion = db_conexion.get_connection())
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{
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conexion.Open();
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string sql = "SELECT * FROM Producto INNER JOIN Categoria ON Producto.fk_idcategoria = Categoria.idcategoria";
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SQLiteCommand command = new SQLiteCommand(sql, conexion);
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reader = command.ExecuteReader();
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return reader;
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}
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}
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catch (SQLiteException ex) {
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MessageBox.Show(ex.Message);
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return reader;
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}
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}
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public static bool insertarProductoDAO(Producto producto)
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{
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var db_conexion = new Conexion();
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try
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{
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using (SQLiteConnection conexion = db_conexion.get_connection())
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{
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conexion.Open();
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string sql = "INSERT INTO Producto (nombre, descripcion, precio, stock, idcategoria) "+
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"VALUES (@nombre, @descripcion, @precio, @stock, @idcategoria)";
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using (SQLiteCommand command = new SQLiteCommand(sql, conexion))
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{
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command.Parameters.AddWithValue("@nombre", producto.nombre);
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command.Parameters.AddWithValue("@descripcion", producto.descripcion);
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command.Parameters.AddWithValue("@precio", producto.precion);
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command.Parameters.AddWithValue("@stock", producto.stock);
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command.Parameters.AddWithValue("@idcategoria", producto.categoria.idCategoria);
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int filasAfectadas = command.ExecuteNonQuery();
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if(filasAfectadas > 0) { return true; }
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else { return false; }
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}
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}
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}
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catch (SQLiteException ex)
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{
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MessageBox.Show(ex.Message);
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return false;
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}
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}
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private static void crearDB()
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{
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var db_conexion = new Conexion();
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try
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{
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SQLiteConnection conexion = db_conexion.get_connection();
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conexion.Open();
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string[] consultas = new string[]
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{
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"DROP TABLE IF EXISTS Login",
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"DROP TABLE IF EXISTS Empleado",
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"DROP TABLE IF EXISTS Producto",
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"DROP TABLE IF EXISTS Categoria",
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"CREATE TABLE Empleado (idempleado INTEGER PRIMARY KEY AUTOINCREMENT, nombre TEXT NOT NULL, "+
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"apellido TEXT NOT NULL, calle TEXT NOT NULL, fecha_contratacion TEXT NOT NULL, colonia TEXT NOT NULL, cp TEXT NOT NULL, no_ext TEXT NOT NULL" +
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"no_int TEXT NOT NULL, referencia TEXT NOT NULL, fecha_nac TEXT NOT NULL, telefono TEXT NOT NULL, activo INTEGER NOT NULL)",
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"CREATE TABLE Login (idlogin INTEGER PRIMARY KEY AUTOINCREMENT, tipo TEXT NOT NULL, usuario TEXT NOT NULL, "+
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"contra TEXT NOT NULL, fk_idempleado INTEGER NOT NULL, FOREIGN KEY (fk_idempleado) REFERENCES Empleado (idempleado))",
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"CREATE TABLE Categoria (idcategoria INTEGER PRIMARY KEY AUTOINCREMENT, nombre TEXT NOT NULL, descripcion TEXT NOT NULL)",
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"CREATE TABLE Producto (idproducto INTEGER PRIMARY KEY AUTOINCREMENT, nombre TEXT NOT NULL, descripcion TEXT NOT NULL, "+
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"precio DECIMAL(10, 2) NOT NULL, stock INTEGER NOT NULL, fk_idcategoria INTEGER NOT NULL, FOREIGN KEY (fk_idcategoria) REFERENCES Categoria (idcategoria))",
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"INSERT INTO Empleado ( nombre, apellido, calle, fecha_contratacion, colonia, cp, no_ext, referencia, fecha_nac, telefono, activo) VALUES('jefe', '', '', '', '', '', '', '', '', '', 0);",
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"INSERT INTO Login ( tipo, usuario, contra, fk_idempleado) VALUES('admin', 'admin', '12345', 1);"
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};
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foreach (string consulta in consultas)
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{
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using (var comando = new SQLiteCommand(consulta, conexion))
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{
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comando.ExecuteNonQuery();
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}
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message);
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}
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}
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}
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} |