use crate::{
    addressing::Address,
    database::{entry::Entry, UpEndConnection},
    util::jobs::JobContainer,
};
use anyhow::Result;
use std::sync::{Arc, RwLock};

#[cfg(feature = "extractors-web")]
pub mod web;

#[cfg(feature = "extractors-audio")]
pub mod audio;

pub trait Extractor {
    fn get(
        &self,
        address: &Address,
        connection: &UpEndConnection,
        job_container: Arc<RwLock<JobContainer>>,
    ) -> Result<Vec<Entry>>;

    fn is_needed(&self, _address: &Address, _connection: &UpEndConnection) -> Result<bool> {
        Ok(true)
    }

    fn insert_info(
        &self,
        address: &Address,
        connection: &UpEndConnection,
        job_container: Arc<RwLock<JobContainer>>,
    ) -> Result<usize> {
        if self.is_needed(address, connection)? {
            let entries = self.get(address, connection, job_container)?;

            connection.transaction(|| {
                let len = entries.len();
                for entry in entries {
                    connection.insert_entry(entry)?;
                }
                Ok(len)
            })
        } else {
            Ok(0)
        }
    }
}

pub fn extract_all(
    address: &Address,
    connection: &UpEndConnection,
    job_container: Arc<RwLock<JobContainer>>,
) -> Result<usize> {
    let mut entry_count = 0;

    #[cfg(feature = "extractors-web")]
    {
        entry_count += web::WebExtractor.insert_info(address, connection, job_container.clone())?;
    }

    #[cfg(feature = "extractors-audio")]
    {
        entry_count += audio::ID3Extractor.insert_info(address, connection, job_container)?;
    }

    Ok(entry_count)
}