#![allow(unused)]
#![allow(warnings)]

use crate::database_control::*;
use crate::value_estimation_team::datapoints::price_data::RealtimePriceData;
use csv::{DeserializeRecordsIter, StringRecord};
use futures::future::try_join_all;
use serde::Deserialize;
use sqlx::FromRow;
use std::sync::Arc;
use tokio::{fs::*, io::AsyncWriteExt, sync::Mutex, time::*};

#[derive(Clone, Debug)]
pub struct SmaData {
    pub sma_value: f64,
    pub close_time: i64,
}
impl SmaData {
    fn new() -> SmaData {
        let a = SmaData {
            sma_value: 0.0,
            close_time: 0,
        };
        a
    }
}

// Binance MA (closeprice)
pub async fn sma(
    moving_number: usize,
    input_rt_data: &Vec<(String, Vec<RealtimePriceData>)>,
    filtered_symbols: &Vec<(String, i64)>,
) -> Result<Vec<(String, Vec<SmaData>)>, Box<dyn std::error::Error + Send + Sync>> {
    if filtered_symbols.is_empty() {
        Err("Err")?;
    }

    let mut sma_data_wrapper: Vec<(String, Vec<SmaData>)> = Vec::new();
    let mut sma_data_wrapper_arc = Arc::new(Mutex::new(sma_data_wrapper));

    let mut task_vec = Vec::new();
    for symbol in filtered_symbols {
        let symbol_search_result = input_rt_data.iter().position(|x| x.0 == *symbol.0);

        match symbol_search_result {
            Some(T) => {
                let sma_data_wrapper_arc_c = Arc::clone(&sma_data_wrapper_arc);
                let symbol_c = symbol.clone();
                let mut sma_data = SmaData::new();
                let mut sma_data_vec: Vec<SmaData> = Vec::new();
                let input_rt_data_c = input_rt_data.clone();
                task_vec.push(tokio::spawn(async move {
                    if input_rt_data_c[T].1.len() < moving_number {
                        sma_data.sma_value = 0.0;
                        sma_data.close_time = 0;
                        sma_data_vec.push(sma_data.clone());
                    } else {
                        let mut iter = input_rt_data_c[T].1.windows(moving_number);
                        for buffer in iter {
                            let mut avg = 0.0;
                            for element in buffer {
                                avg += element.close_price;
                            }
                            avg /= (moving_number as f64);

                            sma_data.sma_value = avg;
                            sma_data.close_time = buffer.last().unwrap().close_time;
                            sma_data_vec.push(sma_data.clone());
                        }
                    }
                    let mut sma_data_wrapper_lock = sma_data_wrapper_arc_c.lock().await;
                    sma_data_wrapper_lock.push((symbol_c.0.clone(), sma_data_vec.clone()));
                }));
            }
            None => {}
        }
    }
    try_join_all(task_vec).await?;
    let a = sma_data_wrapper_arc.lock().await.to_owned();
    Ok(a)
}