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use mongodb::db::ThreadedDatabase;
use bson::Document;
use mongodb::common::WriteConcern;

impl super::Database {

    pub fn delete_many(
        &self,
        collection: String,
        filter: Document,
        write_concern: Option<WriteConcern>,
    ) -> Result<i32,String>
    {
        let collection = self.db.get().unwrap().collection(&collection);

        match collection.delete_many(
            filter,
            write_concern
        ) {
            Ok(deleted) => Ok(deleted.deleted_count),
            Err(e) => Err(e.to_string())
        }
    }
}