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use crate::{AsClasses, SpaceItems, Spacer, WithBreakpoints};
use std::fmt::Debug;
use std::rc::Rc;
use yew::{
    html::ChildrenRenderer,
    prelude::*,
    virtual_dom::{VChild, VComp},
};

#[derive(Copy, Clone, Debug, PartialEq)]
pub enum FlexModifier {
    Grow,
    Shrink,
    Flex1,
    Flex2,
    Flex3,
    Flex4,
    FullWidth,
    Default,
    None,
    Column,
    Justify(Justify),
    Align(Alignement),
}

#[derive(Copy, Clone, Debug, PartialEq)]
pub enum Justify {
    Start,
    End,
    SpaceBetween,
}

#[derive(Copy, Clone, Debug, PartialEq)]
pub enum Alignement {
    Right,
    Left,
    Start,
    Center,
    End,
    Baseline,
    Stretch,
}

impl ToString for FlexModifier {
    fn to_string(&self) -> String {
        match self {
            FlexModifier::Grow => "pf-m-grow",
            FlexModifier::Shrink => "pf-m-shrink",
            FlexModifier::Flex1 => "pf-m-flex-1",
            FlexModifier::Flex2 => "pf-m-flex-2",
            FlexModifier::Flex3 => "pf-m-flex-3",
            FlexModifier::Flex4 => "pf-m-flex-4",
            FlexModifier::FullWidth => "pf-m-full-width",
            FlexModifier::Default => "pf-m-default",
            FlexModifier::None => "pf-m-none",
            FlexModifier::Column => "pf-m-column",
            FlexModifier::Justify(layout) => match layout {
                Justify::Start => "pf-m-justify-content-flex-start",
                Justify::End => "pf-m-justify-content-flex-end",
                Justify::SpaceBetween => "pf-m-justify-content-space-between",
            },
            FlexModifier::Align(alignement) => match alignement {
                Alignement::Right => "pf-m-align-right",
                Alignement::Left => "pf-m-align-left",
                Alignement::Start => "pf-m-align-self-flex-start",
                Alignement::Center => "pf-m-align-self-flex-center",
                Alignement::End => "pf-m-align-self-flex-end",
                Alignement::Baseline => "pf-m-align-self-flex-baseline",
                Alignement::Stretch => "pf-m-align-self-flex-stretch",
            },
        }
        .to_string()
    }
}

#[derive(Clone, PartialEq)]
pub enum FlexChild {
    Flex(Rc<<Flex as Component>::Properties>),
    FlexItem(Rc<<FlexItem as Component>::Properties>),
}

impl From<FlexProps> for FlexChild {
    fn from(props: FlexProps) -> Self {
        FlexChild::Flex(Rc::new(props))
    }
}

impl From<FlexItemProps> for FlexChild {
    fn from(props: FlexItemProps) -> Self {
        FlexChild::FlexItem(Rc::new(props))
    }
}

#[derive(PartialEq, Clone)]
pub struct FlexChildVariant {
    props: FlexChild,
}

impl<CHILD> From<VChild<CHILD>> for FlexChildVariant
where
    CHILD: Component,
    CHILD::Properties: Into<FlexChild> + Clone,
{
    fn from(vchild: VChild<CHILD>) -> Self {
        Self {
            props: (*vchild.props).clone().into(),
        }
    }
}

impl Into<Html> for FlexChildVariant {
    fn into(self) -> Html {
        match self.props {
            FlexChild::Flex(props) => VComp::new::<Flex>(props, NodeRef::default(), None).into(),
            FlexChild::FlexItem(props) => {
                VComp::new::<FlexItem>(props, NodeRef::default(), None).into()
            }
        }
    }
}

pub trait ToFlexItems {
    fn into_flex_items(self) -> Vec<VChild<FlexItem>>;
}

impl ToFlexItems for Vec<Html> {
    fn into_flex_items(self) -> Vec<VChild<FlexItem>> {
        self.into_iter()
            .map(|html| html_nested! {<FlexItem> { html }</FlexItem>})
            .collect()
    }
}

#[derive(Clone, PartialEq, Properties)]
pub struct FlexProps {
    #[prop_or_default]
    pub children: ChildrenRenderer<FlexChildVariant>,
    #[prop_or_default]
    pub modifiers: WithBreakpoints<FlexModifier>,
    #[prop_or_default]
    pub spacer: WithBreakpoints<Spacer>,
    #[prop_or_default]
    pub space_items: WithBreakpoints<SpaceItems>,
}

#[function_component(Flex)]
pub fn flex(props: &FlexProps) -> Html {
    let mut classes = Classes::from("pf-l-flex");

    classes.extend(props.modifiers.as_classes());
    classes.extend(props.space_items.as_classes());
    classes.extend(props.spacer.as_classes());

    html! {
        <div class={classes}>
            { for props.children.iter() }
        </div>
    }
}

// flex item

#[derive(Clone, PartialEq, Properties)]
pub struct FlexItemProps {
    #[prop_or_default]
    pub children: Children,
    #[prop_or_default]
    pub modifiers: WithBreakpoints<FlexModifier>,
    #[prop_or_default]
    pub spacer: WithBreakpoints<Spacer>,
}

#[function_component(FlexItem)]
pub fn flex_item(props: &FlexItemProps) -> Html {
    let mut classes = Classes::from("pf-l-flex__item");

    classes.extend(props.modifiers.as_classes());
    classes.extend(props.spacer.as_classes());

    html! {
        <div class={classes}>
            { for props.children.iter() }
        </div>
    }
}