use std::sync::Arc;

use crate::scrapers::{Media, MediaType, apple_music::AppleMusicClient, backloggd, letterboxd};

use askama::Template;
use rand::seq::IndexedRandom;
use serde::Deserialize;

#[derive(Deserialize)]
pub struct IndexOptions {
    #[cfg(debug_assertions)]
    #[serde(default)]
    mock: bool,
}

type MediaList = [(MediaType, Option<Media>); 3];

#[derive(Debug, Clone)]
pub struct Shas {
    pub website: Option<String>,
}

#[derive(Template, Debug, Clone)]
#[template(path = "index.html")]
pub struct RootTemplate {
    media: MediaList,
    consumption_verb: &'static str,
    shas: Shas,
}

impl RootTemplate {
    pub fn new(
        apple_music_client: Arc<AppleMusicClient>,
        shas: Shas,
        #[allow(unused_variables)] options: &IndexOptions,
    ) -> RootTemplate {
        #[cfg(debug_assertions)]
        let media = if options.mock {
            mocked_media()
        } else {
            Self::fetch_media(apple_music_client)
        };
        #[cfg(not(debug_assertions))]
        let media = Self::fetch_media(apple_music_client);

        let consumption_verb = Self::random_consumption_verb();

        RootTemplate {
            media,
            consumption_verb,
            shas,
        }
    }

    fn fetch_media(apple_music_client: Arc<AppleMusicClient>) -> MediaList {
        [
            (MediaType::Game, backloggd::try_cached_fetch()),
            (MediaType::Film, letterboxd::try_cached_fetch()),
            (MediaType::Song, apple_music_client.try_cached_fetch()),
        ]
    }

    fn random_consumption_verb() -> &'static str {
        static CONSUMPTION_VERBS: &[&str] = &["swallowed", "inhaled", "digested", "ingested"];

        CONSUMPTION_VERBS.choose(&mut rand::rng()).unwrap()
    }
}

#[cfg(debug_assertions)]
fn mocked_media() -> MediaList {
    [
        (MediaType::Game, Some(Media {
            name: "Cyberpunk 2077: Ultimate Edition".to_owned(),
            image: "https://images.igdb.com/igdb/image/upload/t_cover_big/co7iy1.jpg".to_owned(),
            context: "Nintendo Switch 2".to_owned(),
            url: "https://backloggd.com/u/cherryfunk/logs/cyberpunk-2077-ultimate-edition/".to_owned()
        })),
        (MediaType::Film, Some(Media {
            name: "The Thursday Murder Club".to_owned(),
            image: "https://a.ltrbxd.com/resized/film-poster/6/6/6/2/8/6/666286-the-thursday-murder-club-0-230-0-345-crop.jpg?v=4bfeae38a7".to_owned(),
            context: "1 star".to_owned(),
            url: "https://letterboxd.com/ivom/film/the-thursday-murder-club/".to_owned()
        })),
        (MediaType::Song, Some(Media {
            name: "We Might Feel Unsound".to_owned(),
            image: "https://is1-ssl.mzstatic.com/image/thumb/Music124/v4/f4/b2/8e/f4b28ee4-01c6-232c-56a7-b97fd5b0e0ae/00602527857671.rgb.jpg/240x240bb.jpg".to_owned(),
            context: "James Blake — James Blake".to_owned(),
            url: "https://music.apple.com/gb/album/we-might-feel-unsound/1443124478?i=1443125024".to_owned()
        })),
    ]
}