use std::{
    collections::HashSet,
    fs,
    path::PathBuf,
    sync::{Arc, Mutex},
};

use once_cell::sync::Lazy;

use musichoard::library::{
    beets::{executor::BeetsLibraryProcessExecutor, BeetsLibrary},
    Field, ILibrary, Item, Query,
};

use crate::library::testmod::LIBRARY_ITEMS;

pub static BEETS_TEST_CONFIG_PATH: Lazy<PathBuf> =
    Lazy::new(|| fs::canonicalize("./tests/files/library/config.yml").unwrap());

pub static BEETS_EMPTY_CONFIG: Lazy<Arc<Mutex<BeetsLibrary<BeetsLibraryProcessExecutor>>>> =
    Lazy::new(|| {
        Arc::new(Mutex::new(BeetsLibrary::new(
            BeetsLibraryProcessExecutor::default(),
        )))
    });

pub static BEETS_TEST_CONFIG: Lazy<Arc<Mutex<BeetsLibrary<BeetsLibraryProcessExecutor>>>> =
    Lazy::new(|| {
        Arc::new(Mutex::new(BeetsLibrary::new(
            BeetsLibraryProcessExecutor::default().config(Some(&*BEETS_TEST_CONFIG_PATH)),
        )))
    });

#[test]
fn test_no_config_list() {
    let beets_arc = BEETS_EMPTY_CONFIG.clone();
    let beets = &mut beets_arc.lock().unwrap();

    let output = beets.list(&Query::new()).unwrap();

    let expected: Vec<Item> = vec![];
    assert_eq!(output, expected);
}

#[test]
fn test_invalid_config() {
    let mut beets = BeetsLibrary::new(BeetsLibraryProcessExecutor::default().config(Some(
        &PathBuf::from("./tests/files/library/config-does-not-exist.yml"),
    )));

    let result = beets.list(&Query::new());
    assert!(result.is_err());
    assert!(!result.unwrap_err().to_string().is_empty());
}

#[test]
fn test_full_list() {
    let beets_arc = BEETS_TEST_CONFIG.clone();
    let beets = &mut beets_arc.lock().unwrap();

    let output = beets.list(&Query::new()).unwrap();
    let expected: Vec<Item> = LIBRARY_ITEMS.to_owned();

    let output: HashSet<_> = output.iter().collect();
    let expected: HashSet<_> = expected.iter().collect();
    assert_eq!(output, expected);
}

#[test]
fn test_album_artist_query() {
    let beets_arc = BEETS_TEST_CONFIG.clone();
    let beets = &mut beets_arc.lock().unwrap();

    let output = beets
        .list(Query::new().include(Field::AlbumArtist(String::from("Аркона"))))
        .unwrap();

    let expected: Vec<Item> = LIBRARY_ITEMS
        .iter()
        .filter(|it| it.album_artist == "Аркона")
        .cloned()
        .collect();
    assert_eq!(output, expected);
}

#[test]
fn test_album_title_query() {
    let beets_arc = BEETS_TEST_CONFIG.clone();
    let beets = &mut beets_arc.lock().unwrap();

    let output = beets
        .list(Query::new().include(Field::AlbumTitle(String::from("Slovo"))))
        .unwrap();

    let expected: Vec<Item> = LIBRARY_ITEMS
        .iter()
        .filter(|it| it.album_title == "Slovo")
        .cloned()
        .collect();
    assert_eq!(output, expected);
}

#[test]
fn test_exclude_query() {
    let beets_arc = BEETS_TEST_CONFIG.clone();
    let beets = &mut beets_arc.lock().unwrap();

    let output = beets
        .list(Query::new().exclude(Field::AlbumArtist(String::from("Аркона"))))
        .unwrap();
    let expected: Vec<Item> = LIBRARY_ITEMS
        .iter()
        .filter(|it| it.album_artist != "Аркона")
        .cloned()
        .collect();

    let output: HashSet<_> = output.iter().collect();
    let expected: HashSet<_> = expected.iter().collect();
    assert_eq!(output, expected);
}