using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;

namespace CSharpLibrary.SqlTypes
{
    public abstract class Component
    {
        public static readonly string strcon = "Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True";

        public static SqlCommand select, insert, delete, update;

        public SqlConnection con = new SqlConnection(strcon);

        public abstract void Add();
        public abstract void Edit(int id, List<string> vlr);
        public abstract bool Remove(int id);

        // Retornar valores -- implementados dps...

        public bool checkLen(int len, int intent)
        {
            if (len <= (intent + 1))
                return true;
            return false;
        }
    }

    public abstract class Pessoa : Component
    {
        public int? id;
        public string nome;
        public string rg;
        public string cpf;
        public string tel;
        public string cel;
        public string rua;
        public string num;
        public string cidade;
        public string STATUS_PESSOA;

        protected Pessoa(int? id, string nome, string rg, string cpf, string tel, string cel, string rua, string num, string cidade, string STATUS_PESSOA)
        {
            if(id != null)
                this.id = id;
            this.nome = checkLen(nome.Length, 50) ? nome : throw new Exception();
            this.rg = checkLen(rg.Length, 12) ? cel : throw new Exception();
            this.cpf = checkLen(cpf.Length, 11) ? cpf : throw new Exception();
            this.tel = checkLen(tel.Length, 10) ? tel : throw new Exception();
            this.cel = checkLen(cel.Length, 11) ? cel : throw new Exception();
            this.rua = checkLen(rua.Length, 100) ? rua : throw new Exception();
            this.num = checkLen(num.Length, 4) ? num : throw new Exception();
            this.cidade = checkLen(cidade.Length, 30) ? cidade : throw new Exception();
            this.STATUS_PESSOA = STATUS_PESSOA;
        }
    }

    public static class ReturnTypes
    {

        // ------------------- Returns Normais ------------------- //
        public static Autor AReturnAutorByName(string nome)
        {
            throw new NotImplementedException();
        }
        public static Emprestimo AReturnEmprestimo(int i)
        {
            Emprestimo g = null;
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {

                con.Open();
                Emprestimo.select = new SqlCommand("SELECT * from tbEmprestimo WHERE idEmprestimo = @nome", con);
                Emprestimo.select.Parameters.Add("@nome", SqlDbType.Int).Value = i;
                Emprestimo.select.Prepare();

                SqlDataReader r2 = Emprestimo.select.ExecuteReader();
                while (r2.Read())
                {
                    g = new Emprestimo(
                            r2.GetInt32(0),
                            r2.GetInt32(1),
                            r2.GetInt32(2),
                            r2.GetInt32(3),
                            r2.GetDateTime(4),
                            r2.GetDateTime(5),
                            r2.GetString(6)
                        );
                }

                con.Close();
            }
            return g;
        }
        public static Item AReturnItem(int i)
        {
            Item g = null;
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                
                con.Open();
                Item.select = new SqlCommand("SELECT * from tbItem WHERE idItem = @nome", con);
                Item.select.Parameters.Add("@nome", SqlDbType.Int).Value = i;
                Item.select.Prepare();

                SqlDataReader r2 = Item.select.ExecuteReader();
                while (r2.Read())
                {
                    g = new Item(r2.GetInt32(0), r2.GetString(1), r2.GetInt32(2), r2.GetInt32(3), r2.GetInt32(4), r2.GetInt32(5), r2.GetString(6), r2.GetString(7));
                }

                con.Close();
            }
            return g;
        }

        public static Cliente AReturnCliente(int i)
        {
            Cliente g = null;
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {

                con.Open();
                Cliente.select = new SqlCommand("SELECT * from tbCliente WHERE idCliente = @nome", con);
                Cliente.select.Parameters.Add("@nome", SqlDbType.Int).Value = i;
                Cliente.select.Prepare();

                SqlDataReader r2 = Cliente.select.ExecuteReader();
                while (r2.Read())
                {
                    g = new Cliente(
                        r2.GetInt32(0),
                        r2.GetString(1),
                        r2.GetString(2),
                        r2.GetString(3),
                        r2.GetString(4),
                        r2.GetString(5),
                        r2.GetString(6),
                        r2.GetString(7),
                        r2.GetString(8),
                        r2.GetString(9)
                        );
                }

                con.Close();
            }
            return g;
        }
        public static Funcionario AReturnFuncionario(int i)
        {
            Funcionario g = null;
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {

                con.Open();
                Funcionario.select = new SqlCommand("SELECT * from tbFuncionario WHERE idFunc = @nome", con);
                Funcionario.select.Parameters.Add("@nome", SqlDbType.Int).Value = i;
                Funcionario.select.Prepare();

                SqlDataReader r2 = Funcionario.select.ExecuteReader();
                while (r2.Read())
                {
                    g = new Funcionario(
                        r2.GetInt32(0),
                        r2.GetString(1),
                        r2.GetString(2),
                        r2.GetString(3),
                        r2.GetString(4),
                        r2.GetString(5),
                        r2.GetString(6),
                        r2.GetString(7),
                        r2.GetString(8),
                        r2.GetString(9),
                        r2.GetString(10),
                        r2.GetString(11)
                        );
                }

                con.Close();
            }
            return g;
        }
        public static Funcionario AReturnFuncionarioByName(string i)
        {
            Funcionario g = null;
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {

                con.Open();
                Funcionario.select = new SqlCommand("SELECT * from tbFuncionario WHERE usuarioFunc = @user", con);
                Funcionario.select.Parameters.Add("@user", SqlDbType.NVarChar,15).Value = i;
                Funcionario.select.Prepare();

                SqlDataReader r2 = Item.select.ExecuteReader();
                while (r2.Read())
                {
                    g = new Funcionario(
                        r2.GetInt32(0),
                        r2.GetString(1),
                        r2.GetString(2),
                        r2.GetString(3),
                        r2.GetString(4),
                        r2.GetString(5),
                        r2.GetString(6),
                        r2.GetString(7),
                        r2.GetString(8),
                        r2.GetString(9),
                        r2.GetString(10),
                        r2.GetString(11)
                        );
                }

                con.Close();
            }
            return g;
        }

        // ------------------- DataSets ------------------- // 
        public static DataSet DSReturnAutorByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Autor.select = new SqlCommand("SELECT * from tbAutor WHERE nomeAutor LIKE @nome", con);
                Autor.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Autor.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Autor.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }

        public static DataSet DSReturnGeneroByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Genero.select = new SqlCommand("SELECT * from tbGenero WHERE nomeGenero LIKE @nome", con);
                Genero.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Genero.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Genero.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnClienteByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Cliente.select = new SqlCommand("SELECT * from tbCliente WHERE nomeCliente LIKE @nome", con);
                Cliente.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Cliente.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Cliente.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnFuncionarioByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Funcionario.select = new SqlCommand("SELECT * from tbFuncionario WHERE nomeFunc LIKE @nome", con);
                Funcionario.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Funcionario.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Funcionario.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnTipoByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Item.select = new SqlCommand("SELECT * from tbTipo WHERE nomeTipo LIKE @nome", con);
                Item.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Item.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Item.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnItemByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Item.select = new SqlCommand("SELECT " +
                    "i.idItem, i.nomeItem, a.nomeAutor, g.nomeGenero, e.nomeEditora, t.nomeTipo, i.isbnItem, i.statusItem " +
                    "from tbItem i " +
                    "INNER JOIN tbAutor a ON i.idAutor = a.idAutor " +
                    "INNER JOIN tbGenero g ON i.generoItem = g.idGenero " +
                    "INNER JOIN tbEditora e on i.editoraItem = e.idEditora " +
                    "INNER JOIN tbTipo t on i.tipoItem = t.idTipo " +
                    "WHERE i.nomeItem LIKE @nome", con);
                Item.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%"+nome+"%";
                Item.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Item.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnEditoraByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Editora.select = new SqlCommand("SELECT * from tbEditora WHERE nomeEditora LIKE @nome", con);
                Editora.select.Parameters.Add("@nome", SqlDbType.NVarChar).Value = "%" + nome + "%";
                Editora.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Editora.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnEmprestimoByName(string nome)
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Emprestimo.select = new SqlCommand("SELECT " +
                    "e.idEmprestimo as #, c.nomeCliente as Cliente, f.nomeFunc as Funcionario, i.nomeItem as Item, e.dataEmprestimo as Emprestado, e.dataDevolucao as Devolvido, e.statusEmprestimo as Estado " +
                    "FROM tbEmprestimo e " +
                    "INNER JOIN tbCliente c ON e.idCliente = c.idCliente " +
                    "INNER JOIN tbFuncionario f ON e.idFunc = f.idFunc " +
                    "INNER JOIN tbItem i on e.idItem = i.idItem " +
                    "WHERE c.nomeCliente LIKE @nomeCliente", con);

                Emprestimo.select.Parameters.Add("@nomeCliente", SqlDbType.NVarChar, 50).Value = "%" + nome + "%";
                Emprestimo.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Emprestimo.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }
        public static DataSet DSReturnEmprestimoAtivo()
        {
            DataSet tmp = new DataSet();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Emprestimo.select = new SqlCommand("SELECT " +
                    "e.idEmprestimo as #, c.nomeCliente as Cliente, f.nomeFunc as Funcionario, i.nomeItem as Item, e.dataEmprestimo as Emprestado, e.dataDevolucao as Devolvido, e.statusEmprestimo as Estado " +
                    "FROM tbEmprestimo e " +
                    "INNER JOIN tbCliente c ON e.idCliente = c.idCliente " +
                    "INNER JOIN tbFuncionario f ON e.idFunc = f.idFunc " +
                    "INNER JOIN tbItem i on e.idItem = i.idItem", con);

                Emprestimo.select.ExecuteNonQuery();

                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = Emprestimo.select;

                da.Fill(tmp);
                con.Close();
            }
            return tmp;
        }


        // ----------------------------------------------------------------------------------------------------------------------- //
        public static List<int> ReturnEmprestimoVals(string nomeFunc, string nomeCliente, string nomeItem)
        {
            List<int> tmp = new List<int>();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                SqlCommand tmpSql1 = new SqlCommand("SELECT idFunc from tbFuncionario WHERE nomeFunc = @nomeFunc", con);
                SqlCommand tmpSql2 = new SqlCommand("SELECT idCliente from tbCliente WHERE nomeCliente = @nomeCliente", con);
                SqlCommand tmpSql3 = new SqlCommand("SELECT idItem from tbItem WHERE nomeItem = @nomeItem", con);

                tmpSql1.Parameters.Add("@nomeFunc", SqlDbType.NVarChar, 50).Value = nomeFunc;
                tmpSql1.Prepare();
                SqlDataReader r1 = tmpSql1.ExecuteReader();
                while (r1.Read())
                    tmp.Add(r1.GetInt32(0));
                r1.Close();

                tmpSql2.Parameters.Add("@nomeCliente", SqlDbType.NVarChar, 50).Value = nomeCliente;
                tmpSql2.Prepare();
                SqlDataReader r2 = tmpSql2.ExecuteReader();
                while (r2.Read())
                    tmp.Add(r2.GetInt32(0));
                r2.Close();

                tmpSql3.Parameters.Add("@nomeItem", SqlDbType.NVarChar, 50).Value = nomeItem;
                tmpSql3.Prepare();
                SqlDataReader r3 = tmpSql3.ExecuteReader();
                while (r3.Read())
                    tmp.Add(r3.GetInt32(0));
                r3.Close();

                con.Close();
            }
            return tmp;
        }

        public static List<int> ReturnItemVals(string Autor, string Genero, string Editora, string Tipo)
        {
            List<int> tmp = new List<int>();

            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();

                SqlCommand tmpSql1 = new SqlCommand("SELECT idAutor from tbAutor WHERE nomeAutor = @nomeAutor", con);
                SqlCommand tmpSql2 = new SqlCommand("SELECT idGenero from tbGenero WHERE nomeGenero = @nomeGenero", con);
                SqlCommand tmpSql3 = new SqlCommand("SELECT idEditora from tbEditora WHERE nomeEditora = @nomeEditora", con);
                SqlCommand tmpSql4 = new SqlCommand("SELECT idTipo from tbTipo WHERE nomeTipo = @nomeTipo", con);

                tmpSql1.Parameters.Add("@nomeAutor", SqlDbType.NVarChar, 200).Value = Autor;
                tmpSql1.Prepare();
                SqlDataReader r1 = tmpSql1.ExecuteReader();
                while (r1.Read())
                    tmp.Add(r1.GetInt32(0));
                r1.Close();

                tmpSql2.Parameters.Add("@nomeGenero", SqlDbType.NVarChar, 30).Value = Genero;
                tmpSql2.Prepare();
                SqlDataReader r2 = tmpSql1.ExecuteReader();
                while (r2.Read())
                    tmp.Add(r2.GetInt32(0));
                r2.Close();

                tmpSql3.Parameters.Add("@nomeEditora", SqlDbType.NVarChar, 30).Value = Editora;
                tmpSql3.Prepare();
                SqlDataReader r3 = tmpSql1.ExecuteReader();
                while (r3.Read())
                    tmp.Add(r3.GetInt32(0));
                r3.Close();

                tmpSql4.Parameters.Add("@nomeTipo", SqlDbType.NVarChar, 30).Value = Tipo;
                tmpSql4.Prepare();
                SqlDataReader r4 = tmpSql1.ExecuteReader();
                while (r4.Read())
                    tmp.Add(r4.GetInt32(0));
                r4.Close();

                con.Close();
            }

            return tmp;
        }
        public static List<Tuple<int,string,string,string,DateTime,DateTime,string>> ReturnEmprestimoByName(string nomeCliente)
        {
            List<Tuple<int, string, string, string, DateTime, DateTime, string>> tmp = new List<Tuple<int, string, string, string, DateTime, DateTime, string>>();
            using (SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True"))
            {
                con.Open();
                Emprestimo.select = new SqlCommand("SELECT " +
                    "e.idEmprestimo, f.nomeFunc, c.nomeCliente, i.nomeItem, e.dataEmprestimo, e.dataDevolucao, e.statusEmprestimo " +
                    "FROM tbEmprestimo e " +
                    "INNER JOIN tbCliente c ON e.idCliente = c.idCliente " +
                    "INNER JOIN tbFuncionario f ON e.idFunc = f.idFunc " +
                    "INNER JOIN tbItem i on e.idItem = i.idItem " +
                    "WHERE c.nomeCliente LIKE @nomeCliente", con);

                Emprestimo.select.Parameters.Add("@nomeCliente", SqlDbType.NVarChar, 50).Value = "%" + nomeCliente + "%";
                Emprestimo.select.Prepare();

                using (SqlDataReader r = Emprestimo.select.ExecuteReader())
                {
                    while (r.Read())
                    {
                        tmp.Add(
                                new Tuple<int,string, string, string, DateTime, DateTime, string>
                                (
                                    r.GetInt32(0),
                                    r.GetString(1),
                                    r.GetString(2),
                                    r.GetString(3),
                                    r.GetDateTime(4),
                                    r.GetDateTime(5),
                                    r.GetString(6)
                                )
                            );
                    }
                }
                con.Close();
            }
            return tmp;
        }

        // *       Verificar Login         * //
        public static bool CheckLogin(string USER, string PASSWD)
        {
            try
            {
                SqlConnection con = new SqlConnection("Data Source=DESKTOP-PPL6NEP;Initial Catalog=tbTrabalho;Integrated Security=True");
                con.Open();
                List < Tuple<string, string>> a = new List<Tuple<string, string>>();
                int i = 0;

                Funcionario.select = new SqlCommand("SELECT usuarioFunc, senhaFunc FROM " +
                    "tbFuncionario", con);

                using (SqlDataReader r = Funcionario.select.ExecuteReader())
                {
                    while(r.Read())
                    {
                        a.Add(
                                new Tuple<string,string>
                                (
                                    r.GetString(0),
                                    r.GetString(1)
                                )
                            );
                    }
                }
                con.Close();

                foreach(Tuple<string,string> e in a)
                {
                    if(e.Item1 == USER)
                    {
                        i++;
                    }
                    if (e.Item2 == PASSWD)
                    {
                        i++;
                    }
                }
                if (i == 2)
                    return true;
            }
            catch (SqlException)
            {
                throw new Exception();
            }
            return false;
        }
    }
}