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using Microsoft.AspNetCore.Authentication.OAuth;
using Npgsql;
namespace IOL.BookmarkThing.Server.Utilities;
public static class HandleGithubCreatingTicket
{
public static async Task Handle(OAuthCreatingTicketContext context, IConfiguration configuration) {
var githubId = context.Identity?.FindFirst(p => p.Type == ClaimTypes.NameIdentifier)?.Value;
var githubUsername = context.Identity?.FindFirst(p => p.Type == ClaimTypes.Name)?.Value;
if (githubId.IsNullOrWhiteSpace() || githubUsername.IsNullOrWhiteSpace() || context.Identity == default) {
return;
}
var claims = context.Identity.Claims.ToList();
foreach (var claim in claims) {
context.Identity.RemoveClaim(claim);
}
var connstring = ConnectionStrings.AppDatabaseConnectionString(configuration);
var connection = new NpgsqlConnection(connstring);
Console.WriteLine($"HandleGithubCreatingTicket: Getting user mappings for github user: {githubId}");
var getMappedUserQuery = @$"SELECT u.id,u.username FROM github_user_mappings INNER JOIN users u on u.id = github_user_mappings.user_id WHERE github_id='{githubId}'";
await connection.OpenAsync();
await using var getMappedUserCommand = new NpgsqlCommand(getMappedUserQuery, connection);
await using var reader = await getMappedUserCommand.ExecuteReaderAsync();
var handled = false;
while (await reader.ReadAsync()) {
try {
var userId = reader.GetGuid(0);
var username = reader.GetString(1);
context.Identity.AddClaim(new Claim(AppClaims.USER_ID, userId.ToString()));
context.Identity.AddClaim(new Claim(AppClaims.NAME, username));
Console.WriteLine($"HandleGithubCreatingTicket: Found mapping for github id {githubId} mapped to user id {userId}");
handled = true;
} catch (Exception e) {
Console.WriteLine(e);
handled = false;
}
}
await connection.CloseAsync();
if (!handled) {
var userId = Guid.NewGuid();
var insertUserQuery = $@"INSERT INTO users VALUES ('{userId}', '{githubUsername}', '', '{DateTime.UtcNow}')";
await connection.OpenAsync();
await using var insertUserCommand = new NpgsqlCommand(insertUserQuery, connection);
await insertUserCommand.ExecuteNonQueryAsync();
await connection.CloseAsync();
var insertMappingQuery = $@"INSERT INTO github_user_mappings VALUES ('{Guid.NewGuid()}', '{userId}', '{githubId}', '{DateTime.UtcNow}')";
await connection.OpenAsync();
await using var insertMappingCommand = new NpgsqlCommand(insertMappingQuery, connection);
await insertMappingCommand.ExecuteNonQueryAsync();
await connection.CloseAsync();
context.Identity.AddClaim(new Claim(AppClaims.USER_ID, userId.ToString()));
context.Identity.AddClaim(new Claim(AppClaims.NAME, githubUsername));
Console.WriteLine($"HandleGithubCreatingTicket: Created mapping for github id {githubId} mapped to user id {userId}");
}
}
}
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