/*
    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
    Copyright (C) 2025 metamuffin <metamuffin.org>
*/
#![feature(array_try_map)]
pub mod api;
pub mod config;
pub mod helpers;
pub mod r#impl;
pub mod jhls;
pub mod routes;
pub mod stream;
pub mod user;

pub use chrono;

use bincode::{Decode, Encode};
use serde::{Deserialize, Serialize};
use std::{
    collections::{BTreeMap, BTreeSet},
    path::PathBuf,
};

#[macro_export]
macro_rules! url_enum {
    ($(#[$a:meta])* enum $i:ident { $($(#[$va:meta])* $vi:ident = $vk:literal),*, }) => {
        $(#[$a])*
        pub enum $i { $($(#[$va])* $vi),* }
        impl $i {
            pub const ALL: &'static [$i] = &[$($i::$vi),*];
            pub fn to_str(&self) -> &'static str { match self { $(Self::$vi => $vk),* } }
            pub fn from_str_opt(s: &str) -> Option<Self> { match s { $($vk => Some(Self::$vi) ),*, _ => None } }
        }
        impl std::fmt::Display for $i {
            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                f.write_str(self.to_str())
            }
        }
        impl std::str::FromStr for $i {
            type Err = ();
            fn from_str(s: &str) -> Result<Self, Self::Err> {
                Self::from_str_opt(s).ok_or(())
            }
        }
    };
}

#[derive(Clone, Copy, Debug, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct NodeID(pub [u8; 32]);

pub enum NodeIDOrSlug {
    ID(NodeID),
    Slug(String),
}

#[derive(Debug, Clone, Deserialize, Serialize, Default, Encode, Decode)]
pub struct Node {
    #[serde(default)]
    pub slug: String,
    #[serde(default)]
    pub parents: BTreeSet<NodeID>,
    pub kind: NodeKind,
    pub poster: Option<Asset>,
    pub backdrop: Option<Asset>,
    pub title: Option<String>,
    pub subtitle: Option<String>,
    pub tagline: Option<String>,
    pub description: Option<String>,
    pub release_date: Option<i64>, // in unix millis
    pub index: Option<usize>,
    pub media: Option<MediaInfo>,
    #[serde(default)]
    pub ratings: BTreeMap<Rating, f64>,
    pub federated: Option<String>,
    #[serde(default)]
    pub tags: BTreeSet<String>,
    #[serde(default)]
    pub people: BTreeMap<PeopleGroup, Vec<Appearance>>,
    #[serde(default)]
    pub external_ids: BTreeMap<String, String>,
    #[serde(default)]
    pub visibility: Visibility,
    #[serde(default)]
    pub storage_size: u64,
}

#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone, Encode, Decode)]
pub struct Asset(pub String);

#[derive(Debug, Clone, Deserialize, Serialize, Default, Encode, Decode)]
pub struct Appearance {
    #[serde(default)]
    pub jobs: Vec<String>,
    #[serde(default)]
    pub characters: Vec<String>,
    pub person: Person,
}

#[derive(Debug, Clone, Deserialize, Serialize, Default, Encode, Decode)]
pub struct Person {
    pub name: String,
    pub headshot: Option<Asset>,
    pub ids: ObjectIds,
}

#[derive(Debug, Clone, Deserialize, Serialize, Default, Encode, Decode)]
pub struct ObjectIds {
    pub trakt: Option<u64>,
    pub slug: Option<String>,
    pub imdb: Option<String>,
    pub tmdb: Option<u64>,
    pub omdb: Option<u64>,
    pub tvdb: Option<u64>,
}

url_enum!(
    #[derive(
        Debug, Clone, Copy, Deserialize, Serialize, PartialEq, Eq, PartialOrd, Ord, Encode, Decode,
    )]
    #[serde(rename_all = "snake_case")]
    enum PeopleGroup {
        Cast = "cast",
        Writing = "writing",
        Directing = "directing",
        Art = "art",
        Sound = "sound",
        Camera = "camera",
        Lighting = "lighting",
        Crew = "crew",
        Editing = "editing",
        Production = "production",
        Vfx = "vfx",
        CostumeMakeup = "costume_makeup",
        CreatedBy = "created_by",
        // https://musicbrainz.org/relationships/artist-recording
        // modelling after this, but its too many categories
        Performance = "performance",
        Instrument = "instrument",
        Vocal = "vocal",
        Arranger = "arranger",
        Producer = "producer",
        Engineer = "engineer",
    }
);

#[derive(
    Debug,
    Clone,
    Copy,
    Deserialize,
    Serialize,
    PartialEq,
    Eq,
    PartialOrd,
    Ord,
    Encode,
    Decode,
    Default,
)]
#[serde(rename_all = "snake_case")]
pub enum Visibility {
    Hidden,
    Reduced,
    #[default]
    Visible,
}

url_enum!(
    #[derive(
        Debug,
        Clone,
        Copy,
        Deserialize,
        Serialize,
        PartialEq,
        Eq,
        Default,
        Encode,
        Decode,
        PartialOrd,
        Ord,
    )]
    #[serde(rename_all = "snake_case")]
    enum NodeKind {
        #[default]
        Unknown = "unknown",
        Movie = "movie",
        Video = "video",
        Music = "music",
        ShortFormVideo = "short_form_video",
        Collection = "collection",
        Channel = "channel",
        Show = "show",
        Series = "series",
        Season = "season",
        Episode = "episode",
    }
);

#[derive(Debug, Clone, Deserialize, Serialize, Encode, Decode)]
#[serde(rename_all = "snake_case")]
pub enum TrackSource {
    Local(Asset),
    Remote(usize),
}

pub type TrackID = usize;

#[derive(Debug, Clone, Deserialize, Serialize, Hash, Encode, Decode, PartialEq, Eq)]
pub struct LocalTrack {
    pub path: PathBuf,
    pub track: TrackID,
}

#[derive(Debug, Clone, Deserialize, Serialize, Encode, Decode)]
pub struct MediaInfo {
    pub duration: f64, // in seconds
    pub tracks: Vec<SourceTrack>,
    #[serde(default)]
    pub chapters: Vec<Chapter>,
}

#[derive(Debug, Clone, Deserialize, Serialize, Default, Encode, Decode)]
pub struct Chapter {
    pub time_start: Option<f64>,
    pub time_end: Option<f64>,
    pub labels: Vec<(String, String)>,
}

#[derive(Debug, Clone, Deserialize, Serialize, Encode, Decode)]
pub struct SourceTrack {
    pub source: TrackSource,
    pub kind: SourceTrackKind,
    pub name: String,
    pub codec: String,
    pub language: String,
    pub default_duration: Option<u64>,
    pub seek_pre_roll: u64,
    pub codec_delay: u64,
    pub flag_lacing: u64,
    #[serde(default)]
    pub federated: Vec<String>,
}

url_enum!(
    #[derive(
        Debug, Clone, Deserialize, Serialize, PartialEq, Eq, PartialOrd, Ord, Hash, Encode, Decode,
    )]
    #[serde(rename_all = "snake_case")]
    enum Rating {
        Imdb = "imdb",
        Tmdb = "tmdb",
        RottenTomatoes = "rotten_tomatoes",
        Metacritic = "metacritic",
        YoutubeViews = "youtube_views",
        YoutubeLikes = "youtube_likes",
        YoutubeFollowers = "youtube_followers",
        Trakt = "trakt",
    }
);

#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Encode, Decode)]
#[serde(rename_all = "snake_case")]
pub enum SourceTrackKind {
    Video {
        width: u64,
        height: u64,
        display_width: Option<u64>,
        display_height: Option<u64>,
        display_unit: u64,
        fps: Option<f64>,
    },
    Audio {
        channels: usize,
        sample_rate: f64,
        bit_depth: Option<usize>,
    },
    Subtitle,
}

#[derive(Debug, Serialize, Deserialize, Clone, Copy, Hash, PartialEq, Encode, Decode)]
#[serde(rename_all = "snake_case")]
pub enum TraktKind {
    Movie,
    Show,
    Season,
    Episode,
    Person,
    User,
}

#[derive(Debug, Clone, Copy, Hash, Serialize, Deserialize)]
pub enum TmdbKind {
    Tv,
    Movie,
}