// src/adresar/handlers/get_adresar_by_position.rs
use tonic::{Status};
use sqlx::PgPool;
use crate::proto::multieko2::{PositionRequest, AdresarResponse, GetAdresarRequest};
use super::get_adresar;

pub async fn get_adresar_by_position(
    db_pool: &PgPool,
    request: PositionRequest,
) -> Result<AdresarResponse, Status> {
    if request.position < 1 {
        return Err(Status::invalid_argument("Position must be at least 1"));
    }
    
    // Find the ID of the Nth non-deleted record
    let id: i64 = sqlx::query_scalar!(
        r#"
        SELECT id 
        FROM adresar 
        WHERE deleted = FALSE 
        ORDER BY id ASC 
        OFFSET $1 
        LIMIT 1
        "#,
        request.position - 1
    )
    .fetch_optional(db_pool)
    .await
    .map_err(|e| Status::internal(e.to_string()))?
    .ok_or_else(|| Status::not_found("Position out of bounds"))?;
    
    // Now fetch the complete record using the existing get_adresar function
    get_adresar(db_pool, GetAdresarRequest { id }).await
}