// src/corporate/update.rs
use super::{scraper::*, openfigi::*};
use crate::config::Config;
use crate::check_shutdown;
use crate::corporate::update_companies::build_companies_jsonl_streaming_parallel;
use crate::corporate::update_companies_cleanse::{companies_yahoo_cleansed_low_profile, companies_yahoo_cleansed_no_data};
use crate::corporate::update_companies_enrich::enrich_companies_with_events;
use crate::corporate::update_companies_enrich_options_chart::{enrich_companies_with_options, enrich_companies_with_chart};
use crate::corporate::collect_exchanges::collect_and_save_exchanges;
use crate::economic::update_forex::collect_fx_rates;
use crate::util::directories::DataPaths;
use crate::util::logger;
use crate::scraper::webdriver::ChromeDriverPool;
use crate::scraper::yahoo::{YahooClientPool};

use std::result::Result::Ok;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool};

/// Main corporate update entry point with shutdown awareness
pub async fn run_full_update(
    config: &Config, 
    pool: &Arc<ChromeDriverPool>,
    shutdown_flag: &Arc<AtomicBool>,
) -> anyhow::Result<()> {
    logger::log_info("=== Corporate Update ===").await;

    let paths = DataPaths::new(".")?;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 1: Downloading GLEIF CSV...").await;
    let gleif_csv_path = match download_isin_lei_csv().await? {
        Some(p) => {
            logger::log_info(&format!("  ✓ GLEIF CSV at: {}", p)).await;
            p
        }
        None => {
            logger::log_warn("  ✗ Could not obtain GLEIF CSV").await;
            return Ok(());
        }
    };

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 2: Loading OpenFIGI metadata...").await;
    load_figi_type_lists(&paths).await.ok();
    logger::log_info("  ✓ OpenFIGI metadata loaded").await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 3: Checking LEI-FIGI mapping status...").await;
    let all_mapped = ensure_all_leis_mapped(&gleif_csv_path, None).await?;
    
    if !all_mapped {
        logger::log_warn("  ⚠ Some LEIs failed to map - continuing with partial data").await;
    } else {
        logger::log_info("  ✓ All LEIs successfully mapped").await;
    }

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 4: Building securities map (streaming)...").await;
    let date_dir = find_most_recent_figi_date_dir(&paths).await?;
    
    if let Some(date_dir) = date_dir {
        logger::log_info(&format!("  Using FIGI data from: {:?}", date_dir)).await;
        load_or_build_all_securities(&date_dir).await?;
        logger::log_info("  ✓ Securities map updated").await;
    } else {
        logger::log_warn("  ✗ No FIGI data directory found").await;
    }

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 5: Building companies.jsonl with parallel processing and validation...").await;
    let count = build_companies_jsonl_streaming_parallel(&paths, pool, shutdown_flag, config, &None).await?;
    logger::log_info(&format!("  ✓ Saved {} companies", count)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 6: Cleansing companies with missing essential data...").await;
    let cleansed_count = companies_yahoo_cleansed_no_data(&paths).await?;
    logger::log_info(&format!("  ✓ {} companies found on Yahoo ready for further use in companies_yahoo.jsonl", cleansed_count)).await;

    check_shutdown!(shutdown_flag);

    let proxy_pool = pool.get_proxy_pool()
        .ok_or_else(|| anyhow::anyhow!("ChromeDriverPool must be created with VPN proxy rotation enabled"))?;

    logger::log_info("Creating YahooClientPool with proxy rotation...").await;
    let yahoo_pool = Arc::new(YahooClientPool::new(proxy_pool, config, None).await?);
    logger::log_info(&format!("✓ YahooClientPool ready with {} clients", yahoo_pool.num_clients().await)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 7: Cleansing companies with too low profile (with abort-safe persistence)...").await;
    let cleansed_count = companies_yahoo_cleansed_low_profile(&paths, config, yahoo_pool.clone(), shutdown_flag).await?;
    logger::log_info(&format!("  ✓ {} companies with sufficient profile ready for analytics", cleansed_count)).await;

    check_shutdown!(shutdown_flag);
    
    logger::log_info("Step 8: Enriching companies with Yahoo Events (with abort-safe persistence)...").await;
    let enriched_count = enrich_companies_with_events(&paths, config, yahoo_pool.clone(), shutdown_flag).await?;
    logger::log_info(&format!("  ✓ {} companies enriched with event data", enriched_count)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 9: Enriching companies with Yahoo Options (with abort-safe persistence)...").await;
    let options_count = enrich_companies_with_options(&paths, config, yahoo_pool.clone(), shutdown_flag).await?;
    logger::log_info(&format!("  ✓ {} companies enriched with options data", options_count)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 10: Enriching companies with Yahoo Chart (with abort-safe persistence)...").await;
    let chart_count = enrich_companies_with_chart(&paths, config, yahoo_pool.clone(), shutdown_flag).await?;
    logger::log_info(&format!("  ✓ {} companies enriched with chart data", chart_count)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 11: Collecting FX rates...").await;
    let fx_count = collect_fx_rates(&paths, config, yahoo_pool.clone(), shutdown_flag).await?;
    logger::log_info(&format!("  ✓ Collected {} FX rates", fx_count)).await;

    check_shutdown!(shutdown_flag);

    logger::log_info("Step 12: Collecting exchange information...").await;
    let exchange_count = collect_and_save_exchanges(&paths).await?;
    logger::log_info(&format!("  ✓ Collected {} exchanges", exchange_count)).await;

    logger::log_info("=== Corporate update complete === ").await;
    Ok(())
}

async fn find_most_recent_figi_date_dir(paths: &DataPaths) -> anyhow::Result<Option<std::path::PathBuf>> {
    let map_cache_dir = paths.cache_gleif_openfigi_map_dir();
    
    if !map_cache_dir.exists() {
        return Ok(None);
    }
    
    let mut entries = tokio::fs::read_dir(&map_cache_dir).await?;
    let mut dates = Vec::new();
    
    while let Some(entry) = entries.next_entry().await? {
        let path = entry.path();
        if path.is_dir() {
            if let Some(name) = path.file_name().and_then(|n| n.to_str()) {
                if name.len() == 8 && name.chars().all(|c| c.is_numeric()) {
                    dates.push((name.to_string(), path));
                }
            }
        }
    }
    
    if dates.is_empty() {
        return Ok(None);
    }
    
    dates.sort_by(|a, b| b.0.cmp(&a.0));
    Ok(Some(dates[0].1.clone()))
}