use maud::{Markup, Render, html};

use crate::ui::UIWidget;

#[allow(non_snake_case)]
pub fn Animated<T: UIWidget + 'static>(inner: T) -> AnimatedWidget {
    AnimatedWidget {
        inner: Box::new(inner),
        scope: Scope::Normal,
        timing: None,
        delay: None,
        duration: None,
        animation: None,
    }
}

pub struct AnimatedWidget {
    inner: Box<dyn UIWidget>,
    scope: Scope,
    timing: Option<Timing>,
    delay: Option<Delay>,
    duration: Option<Duration>,
    animation: Option<Animation>,
}

macro_rules! setter {
    ($fnname:ident, $varname:ident, $vartype:ident, $internal_var:ident) => {
        #[must_use]
        pub fn $fnname(mut self, $varname: $vartype) -> Self {
            self.$internal_var = $varname;
            self
        }
    };
}

macro_rules! setter_opt {
    ($fnname:ident, $varname:ident, $vartype:ident, $internal_var:ident) => {
        #[must_use]
        pub fn $fnname(mut self, $varname: $vartype) -> Self {
            self.$internal_var = Some($varname);
            self
        }
    };
}

impl AnimatedWidget {
    setter!(scope, scope, Scope, scope);
    setter_opt!(timing, timing, Timing, timing);
    setter_opt!(delay, delay, Delay, delay);
    setter_opt!(duration, duration, Duration, duration);
    setter_opt!(animate, animation, Animation, animation);
}

impl Render for AnimatedWidget {
    fn render(&self) -> Markup {
        self.render_with_class("")
    }
}

impl UIWidget for AnimatedWidget {
    fn can_inherit(&self) -> bool {
        true
    }

    fn base_class(&self) -> Vec<String> {
        let mut ret = vec![self.scope.to_value().to_string()];

        if let Some(timing) = &self.timing {
            ret.push(timing.to_value().to_owned());
        }

        if let Some(delay) = &self.delay {
            ret.push(delay.to_value());
        }

        if let Some(duration) = &self.duration {
            ret.push(duration.to_value());
        }

        if let Some(anim) = &self.animation {
            ret.push(anim.to_value().to_owned());
        }

        ret
    }

    fn extended_class(&self) -> Vec<String> {
        let mut c = self.base_class();
        c.extend_from_slice(&self.inner.extended_class());
        c
    }

    fn render_with_class(&self, class: &str) -> Markup {
        if self.inner.as_ref().can_inherit() {
            self.inner
                .as_ref()
                .render_with_class(&format!("{} {class}", self.base_class().join(" ")))
        } else {
            html! {
                div class=(format!("{} {class}", self.base_class().join(" "))) {
                    (self.inner.as_ref())
                }
            }
        }
    }
}

pub enum Scope {
    None,
    All,
    Normal,
    Colors,
    Opacity,
    Shadow,
    Transform,
}

impl Scope {
    pub fn to_value(&self) -> &str {
        match self {
            Scope::None => "transition-none",
            Scope::All => "transition-all",
            Scope::Normal => "transition",
            Scope::Colors => "transition-colors",
            Scope::Opacity => "transition-opacity",
            Scope::Shadow => "transition-shadow",
            Scope::Transform => "transition-transform",
        }
    }
}

macro_rules! num_opt {
    ($name:ident, $id:literal) => {
        pub enum $name {
            Custom(String),
            _0,
            _75,
            _100,
            _150,
            _200,
            _300,
            _500,
            _700,
            _1000,
        }

        impl $name {
            pub fn to_value(&self) -> String {
                match self {
                    Self::Custom(s) => format!("{}-[{s}]", $id),
                    Self::_0 => concat!($id, "-0").to_string(),
                    Self::_75 => concat!($id, "-75").to_string(),
                    Self::_100 => concat!($id, "-100").to_string(),
                    Self::_150 => concat!($id, "-150").to_string(),
                    Self::_200 => concat!($id, "-200").to_string(),
                    Self::_300 => concat!($id, "-300").to_string(),
                    Self::_500 => concat!($id, "-500").to_string(),
                    Self::_700 => concat!($id, "-700").to_string(),
                    Self::_1000 => concat!($id, "-1000").to_string(),
                }
            }
        }
    };
}

num_opt!(Duration, "duration");
num_opt!(Delay, "delay");

pub enum Timing {
    EaseLinear,
    EaseIn,
    EaseOut,
    EaseInOut,
}

impl Timing {
    pub const fn to_value(&self) -> &str {
        match self {
            Timing::EaseLinear => "ease-linear",
            Timing::EaseIn => "ease-in",
            Timing::EaseOut => "ease-out",
            Timing::EaseInOut => "ease-in-out",
        }
    }
}

pub enum Animation {
    None,
    Spin,
    Ping,
    Pulse,
    Bounce,
}

impl Animation {
    pub fn to_value(&self) -> &str {
        match self {
            Animation::None => "animate-none",
            Animation::Spin => "animate-spin",
            Animation::Ping => "animate-ping",
            Animation::Pulse => "animate-pulse",
            Animation::Bounce => "animate-bounce",
        }
    }
}