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2chBackAPI/DBchat.cs
rak 5fee059b51
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Added Test echo posting
2022-10-18 20:35:11 +10:00

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C#
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using Npgsql;
namespace NeDvachAPI
{
public class DBchat
{
// Obtain connection string information from the portal
private static string Host = "postgres.vdk2ch.ru";
private static string User = "postgres";
private static string DBname = "postgres";
private static string Password = "postgres";
private static string Port = "5432";
public static Post[] DbList()
{
// Build connection string using parameters from portal
Post[] posts = new Post[10];
int postCount = 0;
string received = "";
string connString =
String.Format(
"Server={0}; User Id={1}; Database={2}; Port={3}; Password={4};SSLMode=Prefer",
Host,
User,
DBname,
Port,
Password);
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
using (var command = new NpgsqlCommand(@"
SELECT * FROM
(SELECT post_id, substring(post,1,200)
FROM dvach
ORDER BY post_id
DESC limit 10)
subquery ORDER BY post_id ASC", conn))
{
var reader = command.ExecuteReader();
while (reader.Read())
{
//received +=(
//string.Format(
//"#{0}: {1}" + "\n",
// reader.GetInt32(0).ToString(),
//reader.GetString(1)
//)
//);
Post receivedPost = new()
{
Date = DateTime.Now,
Id = reader.GetInt32(0),
Text = reader.GetString(1)
};
posts[postCount] = receivedPost;
postCount++;
}
reader.Close();
}
}
return posts;
}
public static void DbUpdate(string id, string text)
{
// Build connection string using parameters from portal
string connString =
String.Format(
"Server={0}; User Id={1}; Database={2}; Port={3}; Password={4};SSLMode=Prefer",
Host,
User,
DBname,
Port,
Password);
using (var conn = new NpgsqlConnection(connString))
{
//Console.Out.WriteLine("Opening connection");
conn.Open();
using (var command = new NpgsqlCommand("UPDATE dvach " +
"SET post = @postText WHERE post_id = @ID", conn))
{
command.Parameters.AddWithValue("ID", int.Parse(id));
command.Parameters.AddWithValue("postText", text);
int nRows = command.ExecuteNonQuery();
Console.Out.WriteLine(String.Format("Number of rows updated={0}", nRows));
}
}
Console.WriteLine("Данные обновлены!");
Console.ReadLine();
}
public static void SendPost(Post postToSend)
{
// Build connection string using parameters from portal
//
string connString =
String.Format(
"Server={0}; User Id={1}; Database={2}; Port={3}; Password={4};SSLMode=Prefer",
Host,
User,
DBname,
Port,
Password);
using (var conn = new NpgsqlConnection(connString))
{
Console.Out.WriteLine("Opening connection");
conn.Open();
using (var command = new NpgsqlCommand(@"
INSERT INTO dvach " + @"(post_id, post)
VALUES (DEFAULT, @postText)", conn))
{
command.Parameters.AddWithValue("postText", postToSend.Text);
int nRows = command.ExecuteNonQuery();
Console.Out.WriteLine(String.Format("Number of rows updated={0}", nRows));
}
}
Console.WriteLine("С добавлением закончено");
}
}
}