use maud::{PreEscaped, html};

use crate::ui::prelude::Optional;

// TODO : documentation

#[allow(non_snake_case)]
pub fn Meta(key: &str, value: &str) -> PreEscaped<String> {
    html! {
        meta property=(key) content=(value) {};
    }
}

#[derive(Debug, Clone)]
pub struct Metadata {
    pub title: String,
    pub kind: PreEscaped<String>,
    pub image: MediaItem,
    pub url: String,

    pub audio: Option<MediaItem>,
    pub description: Option<String>,
    pub determiner: Option<Determiner>,
    pub locale: Option<String>,
    pub locale_alternate: Vec<String>,
    pub site_name: Option<String>,
    pub video: Option<MediaItem>,
}

impl Metadata {
    pub fn new<T: ObjectType>(url: &str, title: &str, image: MediaItem, kind: T) -> Self {
        Self {
            title: title.to_string(),
            kind: kind.render(),
            image,
            url: url.to_string(),
            audio: None,
            description: None,
            determiner: None,
            locale: None,
            locale_alternate: Vec::new(),
            site_name: None,
            video: None,
        }
    }

    pub fn audio(mut self, audio: MediaItem) -> Self {
        self.audio = Some(audio);
        self
    }

    pub fn description(mut self, description: &str) -> Self {
        self.description = Some(description.to_string());
        self
    }

    pub fn determiner(mut self, determiner: Determiner) -> Self {
        self.determiner = Some(determiner);
        self
    }

    pub fn locale(mut self, locale: &str) -> Self {
        self.locale = Some(locale.to_string());
        self
    }

    pub fn locale_alternate(mut self, locale: &str) -> Self {
        self.locale_alternate.push(locale.to_string());
        self
    }

    pub fn site_name(mut self, site_name: &str) -> Self {
        self.site_name = Some(site_name.to_string());
        self
    }

    pub fn video(mut self, video: MediaItem) -> Self {
        self.video = Some(video);
        self
    }
}

fn array_meta(v: &[String], tag_name: &str) -> PreEscaped<String> {
    let r = v.into_iter().map(|x| Meta(tag_name, x)).collect::<Vec<_>>();
    html! {
        @for e in r {
            (e)
        }
    }
}

#[derive(Debug, Clone)]
pub enum Determiner {
    A,
    An,
    The,
    Blank,
    Auto,
}

impl Determiner {
    pub fn render(&self) -> PreEscaped<String> {
        match self {
            Determiner::A => Meta("og:determiner", "a"),
            Determiner::An => Meta("og:determiner", "an"),
            Determiner::The => Meta("og:determiner", "the"),
            Determiner::Blank => Meta("og:determiner", ""),
            Determiner::Auto => Meta("og:determiner", "auto"),
        }
    }
}

impl Metadata {
    pub fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("og:title", &self.title))
            (Optional(self.description.as_ref(), |desc| Meta("og:description", desc)))
            (Optional(self.site_name.as_ref(), |site_name| Meta("og:site_name", site_name)))
            (Optional(self.determiner.as_ref(), |determiner| determiner.render()))
            (Optional(self.locale.as_ref(), |locale| Meta("og:locale", locale)))
            (array_meta(&self.locale_alternate, "og:locale:alternate"))
            (Meta("og:url", &self.url))
            (self.image.render())
            (Optional(self.video.as_ref(), |video| video.render()))
            (Optional(self.audio.as_ref(), |audio| audio.render()))
            (self.kind)
        }
    }
}

#[derive(Debug, Clone)]
pub enum MediaItemKind {
    Image,
    Video,
    Audio,
}

#[derive(Debug, Clone)]
pub struct MediaItem {
    pub url: String,
    pub secure_url: Option<String>,
    pub mime: String,
    pub width: Option<u32>,
    pub height: Option<u32>,
    pub alt: String,
    pub kind: MediaItemKind,
}

impl MediaItem {
    pub fn secure_url(mut self, url: &str) -> Self {
        self.secure_url = Some(url.to_string());
        self
    }

    pub fn width(mut self, width: u32) -> Self {
        self.width = Some(width);
        self
    }

    pub fn height(mut self, height: u32) -> Self {
        self.height = Some(height);
        self
    }
}

impl MediaItem {
    #[allow(non_snake_case)]
    pub fn Image(url: &str, mime: &str, alt: &str) -> Self {
        let secure_url = if url.starts_with("https") {
            Some(url.to_string())
        } else {
            None
        };

        MediaItem {
            url: url.to_string(),
            secure_url: secure_url,
            mime: mime.to_string(),
            width: None,
            height: None,
            alt: alt.to_string(),
            kind: MediaItemKind::Image,
        }
    }

    #[allow(non_snake_case)]
    pub fn Video(url: &str, mime: &str, alt: &str) -> Self {
        let secure_url = if url.starts_with("https") {
            Some(url.to_string())
        } else {
            None
        };

        MediaItem {
            url: url.to_string(),
            secure_url: secure_url,
            mime: mime.to_string(),
            width: None,
            height: None,
            alt: alt.to_string(),
            kind: MediaItemKind::Video,
        }
    }

    #[allow(non_snake_case)]
    pub fn Audio(url: &str, mime: &str, alt: &str) -> Self {
        let secure_url = if url.starts_with("https") {
            Some(url.to_string())
        } else {
            None
        };

        MediaItem {
            url: url.to_string(),
            secure_url: secure_url,
            mime: mime.to_string(),
            width: None,
            height: None,
            alt: alt.to_string(),
            kind: MediaItemKind::Audio,
        }
    }
}

impl MediaItem {
    pub fn render(&self) -> PreEscaped<String> {
        match self.kind {
            MediaItemKind::Image => {
                html! {
                    (Meta("og:image", &self.url))
                    (Optional(self.secure_url.as_ref(), |secure_url| Meta("og:image:secure_url", secure_url)))
                    (Meta("og:image:type", &self.mime))
                    (Optional(self.width.as_ref(), |width| Meta("og:image:width", &width.to_string())))
                    (Optional(self.height.as_ref(), |height| Meta("og:image:height", &height.to_string())))
                    (Meta("og:image:alt", &self.alt))
                }
            }
            MediaItemKind::Video => {
                html! {
                    (Meta("og:video", &self.url))
                    (Optional(self.secure_url.as_ref(), |secure_url| Meta("og:video:secure_url", secure_url)))
                    (Meta("og:video:type", &self.mime))
                    (Optional(self.width.as_ref(), |width| Meta("og:video:width", &width.to_string())))
                    (Optional(self.height.as_ref(), |height| Meta("og:video:height", &height.to_string())))
                }
            }
            MediaItemKind::Audio => {
                html! {
                    (Meta("og:audio", &self.url))
                    (Optional(self.secure_url.as_ref(), |secure_url| Meta("og:audio:secure_url", secure_url)))
                    (Meta("og:audio:type", &self.mime))
                }
            }
        }
    }
}

pub struct Song {
    pub duration: u32,
    pub album: String,
    pub album_disc: u32,
    pub album_track: u32,
    pub musician: Vec<String>,
}

impl Song {
    pub fn new(duration: u32, album: &str, album_disc: u32, album_track: u32) -> Self {
        Self {
            duration,
            album: album.to_string(),
            album_disc,
            album_track,
            musician: Vec::new(),
        }
    }

    pub fn musician(mut self, musician: &str) -> Self {
        self.musician.push(musician.to_string());
        self
    }
}

impl ObjectType for Song {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("og:type", "music.song"))
            (Meta("music:duration", &self.duration.to_string()))
            (Meta("music:album:disc", &self.album_disc.to_string()))
            (Meta("music:album:track", &self.album_track.to_string()))
            (array_meta(&self.musician, "music:musician"))
        }
    }
}

pub struct Album {
    pub song: Vec<(String, u32, u32)>,
    pub musician: String,
    pub release_date: chrono::NaiveDate,
}

impl Album {
    pub fn new(musician: &str, release_date: chrono::NaiveDate) -> Self {
        Self {
            song: Vec::new(),
            musician: musician.to_string(),
            release_date,
        }
    }

    pub fn song(mut self, song: &str, disc: u32, track: u32) -> Self {
        self.song.push((song.to_string(), disc, track));
        self
    }
}

impl ObjectType for Album {
    fn render(&self) -> PreEscaped<String> {
        html! {
            @for song in &self.song {
                (Meta("music:song", &song.0))
                (Meta("music:song:disc", &song.1.to_string()))
                (Meta("music:song:track", &song.2.to_string()))
            }
            (Meta("music:musician", &self.musician))
            (Meta("music:release_date", &self.release_date.format("%Y-%m-%d").to_string()))
        }
    }
}

pub struct Playlist {
    pub song: Vec<(String, u32, u32)>,
    pub creator: String,
}

impl Playlist {
    pub fn new(creator: &str) -> Self {
        Self {
            song: Vec::new(),
            creator: creator.to_string(),
        }
    }

    pub fn song(mut self, song: &str, disc: u32, track: u32) -> Self {
        self.song.push((song.to_string(), disc, track));
        self
    }
}

impl ObjectType for Playlist {
    fn render(&self) -> PreEscaped<String> {
        html! {
            @for song in &self.song {
                (Meta("music:song", &song.0))
                (Meta("music:song:disc", &song.1.to_string()))
                (Meta("music:song:track", &song.2.to_string()))
            }
            (Meta("music:creator", &self.creator))
        }
    }
}

pub struct RadioStation {
    pub creator: String,
}

impl RadioStation {
    pub fn new(creator: &str) -> Self {
        Self {
            creator: creator.to_string(),
        }
    }
}

impl ObjectType for RadioStation {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("music:creator", &self.creator))
        }
    }
}

pub struct Video {
    pub actor: Vec<(String, String)>,
    pub director: Vec<String>,
    pub writer: Vec<String>,
    pub duration: u32,
    pub release_date: chrono::NaiveDate,
    pub tag: Vec<String>,
    pub series: Option<String>,
    pub kind: VideoType,
}

impl Video {
    pub fn actor(mut self, actor: &str, role: &str) -> Self {
        self.actor.push((actor.to_string(), role.to_string()));
        self
    }

    pub fn director(mut self, director: &str) -> Self {
        self.director.push(director.to_string());
        self
    }

    pub fn writer(mut self, writer: &str) -> Self {
        self.writer.push(writer.to_string());
        self
    }

    pub fn tag(mut self, tag: &str) -> Self {
        self.tag.push(tag.to_string());
        self
    }
}

impl Video {
    #[allow(non_snake_case)]
    pub fn Movie(duration: u32, release_date: chrono::NaiveDate) -> Self {
        Self {
            actor: Vec::new(),
            director: Vec::new(),
            writer: Vec::new(),
            duration,
            release_date,
            tag: Vec::new(),
            series: None,
            kind: VideoType::Movie,
        }
    }

    #[allow(non_snake_case)]
    pub fn Episode(duration: u32, release_date: chrono::NaiveDate) -> Self {
        Self {
            actor: Vec::new(),
            director: Vec::new(),
            writer: Vec::new(),
            duration,
            release_date,
            tag: Vec::new(),
            series: None,
            kind: VideoType::Episode,
        }
    }

    #[allow(non_snake_case)]
    pub fn TV_Show(duration: u32, release_date: chrono::NaiveDate, series: &str) -> Self {
        Self {
            actor: Vec::new(),
            director: Vec::new(),
            writer: Vec::new(),
            duration,
            release_date,
            tag: Vec::new(),
            series: Some(series.to_string()),
            kind: VideoType::TV_Show,
        }
    }

    #[allow(non_snake_case)]
    pub fn Other(duration: u32, release_date: chrono::NaiveDate) -> Self {
        Self {
            actor: Vec::new(),
            director: Vec::new(),
            writer: Vec::new(),
            duration,
            release_date,
            tag: Vec::new(),
            series: None,
            kind: VideoType::Other,
        }
    }
}

impl ObjectType for Video {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("og:type", self.kind.kind()))
            @for actor in &self.actor {
                (Meta("video:actor", &actor.0))
                (Meta("video:actor:role", &actor.1))
            }
            (array_meta(&self.director, "video:director"))
            (array_meta(&self.writer, "video:writer"))
            (Meta("video:duration", &self.duration.to_string()))
            (Meta("video:release_date", &self.release_date.format("%Y-%m-%d").to_string()))
            (array_meta(&self.tag, "video:tag"))
            (Optional(self.series.as_ref(), |series| Meta("video.series", series)))
        }
    }
}

pub enum VideoType {
    Movie,
    Episode,
    #[allow(non_camel_case_types)]
    TV_Show,
    Other,
}

impl VideoType {
    pub fn kind(&self) -> &str {
        match self {
            VideoType::Movie => "video.movie",
            VideoType::Episode => "video.episode",
            VideoType::TV_Show => "video.tv_show",
            VideoType::Other => "video.other",
        }
    }
}

pub struct Article {
    pub published_time: chrono::NaiveDate,
    pub modified_time: chrono::NaiveDate,
    pub expiration_time: chrono::NaiveDate,
    pub author: Vec<String>,
    pub section: String,
    pub tag: Vec<String>,
}

impl Article {
    pub fn new(
        published_time: chrono::NaiveDate,
        modified_time: chrono::NaiveDate,
        expiration_time: chrono::NaiveDate,
        section: &str,
    ) -> Self {
        Self {
            published_time,
            modified_time,
            expiration_time,
            author: Vec::new(),
            section: section.to_string(),
            tag: Vec::new(),
        }
    }

    pub fn author(mut self, author: &str) -> Self {
        self.author.push(author.to_string());
        self
    }

    pub fn tag(mut self, tag: &str) -> Self {
        self.tag.push(tag.to_string());
        self
    }
}

impl ObjectType for Article {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("article:published_time", &self.published_time.format("%Y-%m-%d").to_string()))
            (Meta("article:modified_time", &self.modified_time.format("%Y-%m-%d").to_string()))
            (Meta("article:expiration_time", &self.expiration_time.format("%Y-%m-%d").to_string()))
            (array_meta(&self.author, "article:author"))
            (Meta("article:section", &self.section))
            (array_meta(&self.tag, "article:tag"))
        }
    }
}

pub struct Book {
    pub author: Vec<String>,
    pub isbn: String,
    pub release_date: chrono::NaiveDate,
    pub tag: Vec<String>,
}

impl Book {
    pub fn new(isbn: &str, release_date: chrono::NaiveDate) -> Self {
        Self {
            author: Vec::new(),
            isbn: isbn.to_string(),
            release_date,
            tag: Vec::new(),
        }
    }

    pub fn author(mut self, author: &str) -> Self {
        self.author.push(author.to_string());
        self
    }

    pub fn tag(mut self, tag: &str) -> Self {
        self.tag.push(tag.to_string());
        self
    }
}

impl ObjectType for Book {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (array_meta(&self.author, "book:author"))
            (Meta("book:isbn", &self.isbn))
            (Meta("book:release_date", &self.release_date.format("%Y-%m-%d").to_string()))
            (array_meta(&self.tag, "book:tag"))
        }
    }
}

pub struct Profile {
    first_name: String,
    last_name: String,
    username: String,
    gender: Gender,
}

impl Profile {
    pub fn new(first_name: &str, last_name: &str, username: &str, gender: Gender) -> Self {
        Self {
            first_name: first_name.to_string(),
            last_name: last_name.to_string(),
            username: username.to_string(),
            gender,
        }
    }
}

pub enum Gender {
    Male,
    Female,
    None,
}

impl ObjectType for Profile {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("profile:first_name", &self.first_name))
            (Meta("profile:last_name", &self.last_name))
            (Meta("profile:username", &self.username))
            (Meta("profile:gender", match self.gender {
                Gender::Male => "male",
                Gender::Female => "female",
                Gender::None => "none",
            }))
        }
    }
}

pub struct Website;

impl Website {
    pub fn new() -> Self {
        Self
    }
}

impl ObjectType for Website {
    fn render(&self) -> PreEscaped<String> {
        html! {
            (Meta("og:type", "website"))
        }
    }
}

pub trait ObjectType {
    fn render(&self) -> PreEscaped<String>;
}