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use crate::ArrowChunk;
use anyhow::{anyhow, Result};
use arrow2::datatypes::SchemaRef;

#[derive(Debug, Clone)]
pub struct QueryResponseData {
    pub blocks: Vec<ArrowBatch>,
    pub transactions: Vec<ArrowBatch>,
    pub logs: Vec<ArrowBatch>,
}

#[derive(Debug, Clone)]
pub struct QueryResponse {
    pub archive_height: Option<u64>,
    pub next_block: u64,
    pub total_execution_time: u64,
    pub data: QueryResponseData,
}

#[derive(Debug, Clone)]
pub struct ArrowBatch {
    pub chunk: ArrowChunk,
    pub schema: SchemaRef,
}

impl ArrowBatch {
    pub fn column<T: 'static>(&self, name: &str) -> Result<&T> {
        match self
            .schema
            .fields
            .iter()
            .enumerate()
            .find(|(_, f)| f.name == name)
        {
            Some((idx, _)) => {
                let col = self.chunk.columns()[idx]
                    .as_any()
                    .downcast_ref::<T>()
                    .unwrap();
                Ok(col)
            }
            None => Err(anyhow!("field {} not found in schema", name)),
        }
    }
}