use crate::{Result, Rudof, api::query::QueryOperations};
use std::io;

/// Builder for `serialize_sparql_query` operation.
///
/// Provides a fluent interface for configuring and executing query serialization
/// operations.
pub struct SerializeSparqlQueryBuilder<'a, W: io::Write> {
    rudof: &'a Rudof,
    writer: &'a mut W,
}

impl<'a, W: io::Write> SerializeSparqlQueryBuilder<'a, W> {
    /// Creates a new builder instance.
    ///
    /// This is called internally by `Rudof::serialize_sparql_query()` and
    /// should not be constructed directly.
    pub(crate) fn new(rudof: &'a Rudof, writer: &'a mut W) -> Self {
        Self { rudof, writer }
    }

    /// Executes the query serialization operation.
    ///
    /// # Errors
    ///
    /// Returns an error if no query is loaded or serialization fails.
    pub fn execute(self) -> Result<()> {
        <Rudof as QueryOperations>::serialize_sparql_query(self.rudof, self.writer)
    }
}
