public HttpResponseMessage GetPostComments(int postId)
{
GetPostCommentsResult result = new GetPostCommentsResult();
result.postId = postId;
List <PostCommentInfo> comments = new List <PostCommentInfo>();
try
{
using (SqlConnection connection = new SqlConnection(Constants.ConnectionStr))
{
connection.Open();
string query = "SELECT * FROM post_comments where PostId = (@postId) ORDER BY Timestamp asc";
using (SqlCommand cmd = new SqlCommand(query, connection))
{
cmd.Parameters.Add("@postId", SqlDbType.Int).Value = postId;
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
var comment = new PostCommentInfo()
{
commentId = reader.GetInt32(0),
// index 1 is postId
userName = reader.IsDBNull(2) ? null : reader.GetString(2),
content = reader.IsDBNull(3) ? null : reader.GetString(3),
timestamp = (long)reader.GetDateTime(4).Subtract(StartTime).TotalMilliseconds,
};
comments.Add(comment);
}
}
}
result.success = true;
result.message = $"Get post comments succeeded";
result.comments = comments.ToArray();
return(Utilities.CreateJsonReponse(Request, result));
}
}
catch (Exception e)
{
result.message = $"Failed to list posts: {e.Message}";
return(Utilities.CreateJsonReponse(Request, result));
}
}
public HttpResponseMessage GetPost(int postId, Boolean includeComment = true)
{
GetPostResult result = new GetPostResult();
try
{
using (SqlConnection connection = new SqlConnection(Constants.ConnectionStr))
{
connection.Open();
string getQuery = "SELECT p.*, u.PhotoUrl FROM posts AS p " +
"LEFT JOIN users AS u " +
"ON p.UserName = u.userName " +
"WHERE p.PostId = (@postId)";
using (SqlCommand cmd = new SqlCommand(getQuery, connection))
{
cmd.Parameters.Add("@postId", SqlDbType.Int).Value = postId;
using (SqlDataReader reader = cmd.ExecuteReader())
{
if (reader.Read())
{
var post = new PostInfo()
{
postId = reader.GetInt32(0),
userName = reader.IsDBNull(1) ? null : reader.GetString(1),
imageUrl = reader.IsDBNull(2) ? null : reader.GetString(2),
description = reader.IsDBNull(3) ? null : reader.GetString(3),
longitude = reader.GetSqlSingle(4).Value,
latitude = reader.GetSqlSingle(5).Value,
timestamp = (long)reader.GetDateTime(6).Subtract(StartTime).TotalMilliseconds,
userPhotoUrl = reader.IsDBNull(7) ? null : reader.GetString(7)
};
result.postInfo = post;
}
else
{
result.message = $"Post with id {postId} not found!";
return(Utilities.CreateJsonReponse(Request, result));
}
}
}
if (includeComment)
{
List <PostCommentInfo> comments = new List <PostCommentInfo>();
string query = "SELECT * FROM post_comments where PostId = (@postId) ORDER BY Timestamp asc";
using (SqlCommand cmd = new SqlCommand(query, connection))
{
cmd.Parameters.Add("@postId", SqlDbType.Int).Value = postId;
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
var comment = new PostCommentInfo()
{
commentId = reader.GetInt32(0),
// index 1 is postId
userName = reader.IsDBNull(2) ? null : reader.GetString(2),
content = reader.IsDBNull(3) ? null : reader.GetString(3),
timestamp = (long)reader.GetDateTime(4).Subtract(StartTime).TotalMilliseconds,
};
comments.Add(comment);
}
}
}
result.comments = comments.ToArray();
}
result.success = true;
result.message = $"Get post succeeded";
return(Utilities.CreateJsonReponse(Request, result));
}
}
catch (Exception e)
{
result.message = $"Failed to list posts: {e.Message}";
return(Utilities.CreateJsonReponse(Request, result));
}
}
