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use yew::prelude::*;

/// Represents the optional size of a Modal dialog, described [here](https://getbootstrap.com/docs/5.1/components/modal/#optional-sizes)
#[derive(Clone, PartialEq, Eq)]
pub enum ModalSize {
    ExtraLarge,
    Large,
    Normal,
    Small,
}

impl Default for ModalSize {
    fn default() -> Self {
        ModalSize::Normal
    }
}

/// # Modal dialog
/// Modal dialog, parent of [ModalHeader], [ModalBody] and [ModalFooter].
/// 
/// See [ModalProps] for a listing of properties
/// 
/// ## Example
/// ```rust
/// use yew::prelude::*;
/// use yew_bootstrap::component::{Modal, ModalHeader, ModalBody, ModalFooter, Button, ModalSize};
/// use yew_bootstrap::util::Color;
/// fn test() -> Html {
///     html!{
///         <Modal id="ExampleModal" size={ModalSize::Large}> // size defaults to Normal
///             <ModalHeader title="Modal title" id="ExampleModal"/>
///             <ModalBody>
///                 <p>{"Modal body text goes here."}</p>
///             </ModalBody>
///             <ModalFooter>
///                 <Button style={ Color::Secondary } modal_dismiss={ true }>{ "Close" }</Button>
///                 <Button style={ Color::Primary }>{ "Save changes" }</Button>
///             </ModalFooter>
///         </Modal>
///     }
/// }
/// ```
pub struct Modal { }

/// # Header for a [Modal] dialog
/// See [ModalHeaderProps] for a listing of properties
pub struct ModalHeader { }

/// # Body for a [Modal] dialog
/// See [ModalBodyProps] for a listing of properties
pub struct ModalBody { }

/// # Footer for a [Modal] dialog
/// See [ModalFooterProps] for a listing of properties
pub struct ModalFooter { }

/// Properties for [ModalFooter]
#[derive(Properties, Clone, PartialEq)]
pub struct ModalFooterProps {
    #[prop_or_default]
    pub children: Children
}

impl Component for ModalFooter {
    type Message = ();
    type Properties = ModalFooterProps;

    fn create(_ctx: &Context<Self>) -> Self {
        Self {}
    }

    fn view(&self, ctx: &Context<Self>) -> Html {
        let props = ctx.props();

        html! {
            <div class="modal-footer">
                { for props.children.iter() }
            </div>
        }
    }
}

/// Properties for [ModalHeader]
#[derive(Properties, Clone, PartialEq)]
pub struct ModalHeaderProps {
    /// Title for the Modal dialog
    #[prop_or_default]
    pub title: String,

    /// required for triggering open/close
    #[prop_or_default]
    pub id: String,
}

impl Component for ModalHeader {
    type Message = ();
    type Properties = ModalHeaderProps;

    fn create(_ctx: &Context<Self>) -> Self {
        Self {}
    }

    fn view(&self, ctx: &Context<Self>) -> Html {
        let props = ctx.props();

        html! {
            <div class="modal-header">
                <h5 class="modal-title" id={format!("#{}", props.id.clone())}>{props.title.clone()}</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
        }
    }
}

/// Properties for [ModalBody]
#[derive(Properties, Clone, PartialEq)]
pub struct ModalBodyProps {
    #[prop_or_default]
    pub children: Children
}

impl Component for ModalBody {
    type Message = ();
    type Properties = ModalBodyProps;

    fn create(_ctx: &Context<Self>) -> Self {
        Self {}
    }

    fn view(&self, ctx: &Context<Self>) -> Html {
        let props = ctx.props();

        html! {
            <div class="modal-body">
                { for props.children.iter() }
            </div>
        }
    }
}

/// Properties for Modal
#[derive(Properties, Clone, PartialEq)]
pub struct ModalProps {
    #[prop_or_default]
    pub title: String,
    /// required for triggering open/close
    #[prop_or_default]
    pub id: String,
    /// modal body, typically [ModalHeader], [ModalBody] or [ModalFooter]
    #[prop_or_default]
    pub children: Children,
    /// Size of the modal
    #[prop_or_default]
    pub size: ModalSize,
}

impl Component for Modal {
    type Message = ();
    type Properties = ModalProps;

    fn create(_ctx: &Context<Self>) -> Self {
        Self {}
    }

    fn view(&self, ctx: &Context<Self>) -> Html {
        let props = ctx.props();

        let mut dialog_classes = Classes::new();
        dialog_classes.push("modal-dialog");

        match props.size {
            ModalSize::ExtraLarge => dialog_classes.push("modal-xl"),
            ModalSize::Large => dialog_classes.push("modal-lg"),
            ModalSize::Small => dialog_classes.push("modal-sm"),
            _ => (),
        }

        html! {
            <div class="modal" tabindex="-1" id={props.id.clone()}>
                <div class={dialog_classes}>
                    <div class="modal-content">
                        { for props.children.iter() }
                    </div>
                </div>
            </div>
        }
    }
}