feat: namespace team2
This commit is contained in:
adam
parent
10fdfebcb3
commit
22aec4322a
340
src/team2.cs
340
src/team2.cs
@ -1,151 +1,265 @@
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using System;
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using System;
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using Microsoft.Data.Sqlite;
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using Microsoft.Data.Sqlite;
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using Database.Dto;
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class AddRecords
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namespace Team2
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{
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{
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public static void AddAuthor(SqliteConnection connection, string name, string surname, DateTime dateOfBirth)
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public static class Team2
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{
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public static AuthorDto AddAuthor(SqliteConnection connection, string name, string surname, DateTime dateOfBirth)
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{
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{
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string query = "INSERT OR IGNORE INTO Authors (Name, Surname, DateOfBirth) VALUES (@name, @surname, @dob);";
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try
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using (var command = new SqliteCommand(query, connection))
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{
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{
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command.Parameters.AddWithValue("@name", name);
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var dob = dateOfBirth.ToString("yyyy-MM-dd");
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command.Parameters.AddWithValue("@surname", surname);
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using (var cmd = connection.CreateCommand())
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command.Parameters.AddWithValue("@dob", dateOfBirth.ToString("yyyy-MM-dd"));
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{
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command.ExecuteNonQuery();
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cmd.CommandText = "INSERT OR IGNORE INTO Authors (Name, Surname, DateOfBirth) VALUES (@name, @surname, @dob);";
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Console.WriteLine("Author added successfully.");
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@surname", surname);
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cmd.Parameters.AddWithValue("@dob", dob);
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cmd.ExecuteNonQuery();
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = "SELECT ID, Name, Surname, DateOfBirth FROM Authors WHERE Name = @name AND Surname = @surname AND DateOfBirth = @dob LIMIT 1;";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@surname", surname);
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cmd.Parameters.AddWithValue("@dob", dob);
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using (var reader = cmd.ExecuteReader())
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{
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if (!reader.Read()) return null;
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var a = new AuthorDto
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{
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Id = reader.IsDBNull(0) ? 0 : reader.GetInt32(0),
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Name = reader.IsDBNull(1) ? "" : reader.GetString(1),
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Surname = reader.IsDBNull(2) ? "" : reader.GetString(2),
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DateOfBirth = reader.IsDBNull(3) ? DateTime.MinValue : reader.GetDateTime(3)
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};
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return a;
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}
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}
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}
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catch
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{
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return null;
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}
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}
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}
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}
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public static void AddPublisher(SqliteConnection connection, string name, string state)
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public static Publisher AddPublisher(SqliteConnection connection, string name, string state)
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{
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{
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string query = "INSERT OR IGNORE INTO Publisher (Name, State) VALUES (@name, @state);";
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try
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using (var command = new SqliteCommand(query, connection))
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{
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{
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command.Parameters.AddWithValue("@name", name);
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using (var cmd = connection.CreateCommand())
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command.Parameters.AddWithValue("@state", state);
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{
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command.ExecuteNonQuery();
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cmd.CommandText = "INSERT OR IGNORE INTO Publisher (Name, State) VALUES (@name, @state);";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@state", state);
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cmd.ExecuteNonQuery();
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = "SELECT ID, Name, State FROM Publisher WHERE Name = @name AND State = @state LIMIT 1;";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@state", state);
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using (var reader = cmd.ExecuteReader())
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{
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if (!reader.Read()) return null;
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return new Publisher
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{
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Id = reader.IsDBNull(0) ? 0 : reader.GetInt32(0),
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Name = reader.IsDBNull(1) ? "" : reader.GetString(1),
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State = reader.IsDBNull(2) ? "" : reader.GetString(2)
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};
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}
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}
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}
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catch
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{
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return null;
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}
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}
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}
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}
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public static void AddBook(SqliteConnection connection, string name, int authorId, int publisherId, int year, int total, int available)
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public static BookDto AddBook(SqliteConnection connection, string name, int authorId, int publisherId, int year, int total, int available)
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{
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{
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string query = @"INSERT OR IGNORE INTO Books (Name, AuthorID, PublisherID, YearOfRelease, Total, Available)
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try
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VALUES (@name, @author, @publisher, @year, @total, @available);";
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using (var command = new SqliteCommand())
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{
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{
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command.Connection = connection;
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// check author
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try
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using (var cmd = connection.CreateCommand())
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{
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{
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// Check author exists
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cmd.CommandText = "SELECT 1 FROM Authors WHERE ID = @Aid;";
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command.CommandText = "SELECT 1 FROM Authors WHERE ID = @Aid;";
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cmd.Parameters.AddWithValue("@Aid", authorId);
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command.Parameters.Clear();
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using (var r = cmd.ExecuteReader())
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command.Parameters.AddWithValue("@Aid", authorId);
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using (var reader = command.ExecuteReader())
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{
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{
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if (!reader.HasRows)
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if (!r.HasRows) return null;
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{
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Console.WriteLine($"Author with ID {authorId} does not exist.");
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return;
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}
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}
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}
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// Check publisher exists
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command.CommandText = "SELECT 1 FROM Publisher WHERE ID = @Pid;";
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command.Parameters.Clear();
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command.Parameters.AddWithValue("@Pid", publisherId);
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using (var reader = command.ExecuteReader())
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{
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if (!reader.HasRows)
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{
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Console.WriteLine($"Publisher with ID {publisherId} does not exist.");
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return;
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}
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}
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// Insert book
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command.CommandText = query;
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command.Parameters.Clear();
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command.Parameters.AddWithValue("@name", name);
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command.Parameters.AddWithValue("@year", year);
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command.Parameters.AddWithValue("@total", total);
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command.Parameters.AddWithValue("@available", available);
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command.Parameters.AddWithValue("@author", authorId);
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command.Parameters.AddWithValue("@publisher", publisherId);
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command.ExecuteNonQuery();
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}
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}
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catch (Exception ex)
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// check publisher
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using (var cmd = connection.CreateCommand())
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{
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{
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// Log and return so the exception doesn't bubble to the caller
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cmd.CommandText = "SELECT 1 FROM Publisher WHERE ID = @Pid;";
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Console.WriteLine($"AddBook failed: {ex.Message}");
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cmd.Parameters.AddWithValue("@Pid", publisherId);
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return;
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using (var r = cmd.ExecuteReader())
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{
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if (!r.HasRows) return null;
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}
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}
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = @"INSERT OR IGNORE INTO Books (Name, AuthorID, PublisherID, YearOfRelease, Total, Available)
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VALUES (@name, @author, @publisher, @year, @total, @available);";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@author", authorId);
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cmd.Parameters.AddWithValue("@publisher", publisherId);
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cmd.Parameters.AddWithValue("@year", year);
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cmd.Parameters.AddWithValue("@total", total);
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cmd.Parameters.AddWithValue("@available", available);
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cmd.ExecuteNonQuery();
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = @"SELECT ID, Name, AuthorID, PublisherID, YearOfRelease, Total, Available
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FROM Books
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WHERE Name = @name AND AuthorID = @author AND PublisherID = @publisher AND YearOfRelease = @year
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LIMIT 1;";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@author", authorId);
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cmd.Parameters.AddWithValue("@publisher", publisherId);
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cmd.Parameters.AddWithValue("@year", year);
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using (var reader = cmd.ExecuteReader())
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{
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if (!reader.Read()) return null;
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return new BookDto
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{
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Id = reader.IsDBNull(0) ? 0 : reader.GetInt32(0),
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Name = reader.IsDBNull(1) ? "" : reader.GetString(1),
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YearOfRelease = reader.IsDBNull(4) ? 0 : reader.GetInt32(4),
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Total = reader.IsDBNull(5) ? 0 : reader.GetInt32(5),
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Author = new AuthorDto { Id = reader.IsDBNull(2) ? 0 : reader.GetInt32(2) },
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Publisher = new Publisher { Id = reader.IsDBNull(3) ? 0 : reader.GetInt32(3) }
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};
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}
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}
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}
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catch
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{
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return null;
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}
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}
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}
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}
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public static void AddUser(SqliteConnection connection, string name, string surname)
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public static UserDto AddUser(SqliteConnection connection, string name, string surname)
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{
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{
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string query = "INSERT OR IGNORE INTO Users (Name, Surname) VALUES (@name, @surname);";
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try
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using (var command = new SqliteCommand(query, connection))
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{
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{
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command.Parameters.AddWithValue("@name", name);
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using (var cmd = connection.CreateCommand())
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command.Parameters.AddWithValue("@surname", surname);
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{
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command.ExecuteNonQuery();
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cmd.CommandText = "INSERT OR IGNORE INTO Users (Name, Surname) VALUES (@name, @surname);";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@surname", surname);
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cmd.ExecuteNonQuery();
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = "SELECT ID, Name, Surname FROM Users WHERE Name = @name AND Surname = @surname LIMIT 1;";
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cmd.Parameters.AddWithValue("@name", name);
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cmd.Parameters.AddWithValue("@surname", surname);
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using (var reader = cmd.ExecuteReader())
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{
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if (!reader.Read()) return null;
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return new UserDto
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{
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Id = reader.IsDBNull(0) ? 0 : reader.GetInt32(0),
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Name = reader.IsDBNull(1) ? "" : reader.GetString(1),
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Surname = reader.IsDBNull(2) ? "" : reader.GetString(2)
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};
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}
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}
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}
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catch
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{
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return null;
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}
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}
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}
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}
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public static void AddBorrowedBookRecord(SqliteConnection connection, int bookId, int userId, DateTime borrowedDate, int days = 30)
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public static Borrow AddBorrowedBookRecord(SqliteConnection connection, int bookId, int userId, DateTime borrowedDate, int days = 30)
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{
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{
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string returnDue = borrowedDate.AddDays(days).ToString("yyyy-MM-dd");
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try
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string query = @"INSERT OR IGNORE INTO Borrows (DateOfBorrow, ReturnDue, UserID, BookID)
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VALUES (@borrowed, @due, @user, @book);";
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using (var command = new SqliteCommand())
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{
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{
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command.Connection = connection;
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var borrowed = borrowedDate.ToString("yyyy-MM-dd");
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try
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var due = borrowedDate.AddDays(days).ToString("yyyy-MM-dd");
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{
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// Check user exists
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command.CommandText = "SELECT 1 FROM Users WHERE ID = @Uid;";
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command.Parameters.Clear();
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command.Parameters.AddWithValue("@Uid", userId);
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using (var reader = command.ExecuteReader())
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{
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if (!reader.HasRows)
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{
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Console.WriteLine($"User with ID {userId} does not exist.");
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return;
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}
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}
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// Check book exists
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using (var cmd = connection.CreateCommand())
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command.CommandText = "SELECT 1 FROM Books WHERE ID = @Bid;";
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command.Parameters.Clear();
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command.Parameters.AddWithValue("@Bid", bookId);
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using (var reader = command.ExecuteReader())
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{
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if (!reader.HasRows)
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{
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Console.WriteLine($"Book with ID {bookId} does not exist.");
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return;
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}
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}
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// Insert borrow record
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command.CommandText = query;
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command.Parameters.Clear();
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command.Parameters.AddWithValue("@borrowed", borrowedDate.ToString("yyyy-MM-dd"));
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command.Parameters.AddWithValue("@due", returnDue);
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command.Parameters.AddWithValue("@user", userId);
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command.Parameters.AddWithValue("@book", bookId);
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command.ExecuteNonQuery();
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}
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catch (Exception ex)
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{
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{
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Console.WriteLine($"AddBorrowedBookRecord failed: {ex.Message}");
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cmd.CommandText = "SELECT 1 FROM Users WHERE ID = @Uid;";
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return;
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cmd.Parameters.AddWithValue("@Uid", userId);
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using (var r = cmd.ExecuteReader())
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{
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if (!r.HasRows) return null;
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}
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}
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = "SELECT 1 FROM Books WHERE ID = @Bid;";
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cmd.Parameters.AddWithValue("@Bid", bookId);
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using (var r = cmd.ExecuteReader())
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{
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if (!r.HasRows) return null;
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}
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = @"INSERT OR IGNORE INTO Borrows (DateOfBorrow, ReturnDue, UserID, BookID)
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VALUES (@borrowed, @due, @user, @book);";
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cmd.Parameters.AddWithValue("@borrowed", borrowed);
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cmd.Parameters.AddWithValue("@due", due);
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cmd.Parameters.AddWithValue("@user", userId);
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cmd.Parameters.AddWithValue("@book", bookId);
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cmd.ExecuteNonQuery();
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}
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using (var cmd = connection.CreateCommand())
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{
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cmd.CommandText = @"SELECT ID, DateOfBorrow, ReturnDue, DateOfReturn, UserID, BookID
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FROM Borrows
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WHERE DateOfBorrow = @borrowed AND ReturnDue = @due AND UserID = @user AND BookID = @book
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LIMIT 1;";
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cmd.Parameters.AddWithValue("@borrowed", borrowed);
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cmd.Parameters.AddWithValue("@due", due);
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cmd.Parameters.AddWithValue("@user", userId);
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cmd.Parameters.AddWithValue("@book", bookId);
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using (var reader = cmd.ExecuteReader())
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{
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if (!reader.Read()) return null;
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var b = new Borrow
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{
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Id = reader.IsDBNull(0) ? 0 : reader.GetInt32(0),
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DateOfBorrow = reader.IsDBNull(1) ? DateTime.MinValue : reader.GetDateTime(1),
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ReturnDue = reader.IsDBNull(2) ? DateTime.MinValue : reader.GetDateTime(2),
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DateOfReturn = reader.IsDBNull(3) ? DateTime.MinValue : reader.GetDateTime(3),
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User = new UserDto { Id = reader.IsDBNull(4) ? 0 : reader.GetInt32(4) },
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Book = new BookDto { Id = reader.IsDBNull(5) ? 0 : reader.GetInt32(5) }
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};
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return b;
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}
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}
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}
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catch
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{
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return null;
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}
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}
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}
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}
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}
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}
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}
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