Popover

// SPDX-FileCopyrightText: 2026 Proa Labs, Inc.
// SPDX-License-Identifier: MIT OR Apache-2.0

use super::{Popover, PopoverClose, PopoverContent, PopoverTrigger};
use crate::components::md_support::block_boundary;
use proa_core::WebContext;
use proa_core::{MdRenderSync, WriteBuf, WriteError};

/// Popover renders its trigger inline, then its content as a following block.
impl<
        Loader: ::proa_core::DataLoader,
        B: WriteBuf,
        Trigger: MdRenderSync<Loader, B>,
        Content: MdRenderSync<Loader, B>,
    > MdRenderSync<Loader, B> for Popover<Trigger, Content>
{
    fn render_md(self, cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        block_boundary(cx)?;
        let prev = cx.md_set_inline(true);
        self.trigger.render_md(cx)?;
        cx.md_set_inline(prev);
        block_boundary(cx)?;
        self.content.render_md(cx)?;
        block_boundary(cx)?;
        Ok(())
    }
}

/// PopoverTrigger renders as just its label text — the button chrome is meaningless in markdown.
impl<Loader: ::proa_core::DataLoader, B: WriteBuf, C: MdRenderSync<Loader, B>>
    MdRenderSync<Loader, B> for PopoverTrigger<C>
{
    fn render_md(self, cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        let prev = cx.md_set_inline(true);
        self.children.render_md(cx)?;
        cx.md_set_inline(prev);
        Ok(())
    }
}

/// PopoverContent renders its children as a plain block.
impl<Loader: ::proa_core::DataLoader, B: WriteBuf, C: MdRenderSync<Loader, B>>
    MdRenderSync<Loader, B> for PopoverContent<C>
{
    fn render_md(self, cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        block_boundary(cx)?;
        self.children.render_md(cx)?;
        block_boundary(cx)?;
        Ok(())
    }
}

/// PopoverClose is interaction chrome — renders nothing.
impl<Loader: ::proa_core::DataLoader, B: WriteBuf, C> MdRenderSync<Loader, B> for PopoverClose<C> {
    fn render_md(self, _cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn popover_renders_trigger_then_content() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        Popover {
            trigger: Some(PopoverTrigger {
                class: None,
                children: Some("Open settings"),
            }),
            content: Some(PopoverContent {
                class: None,
                children: Some("Set the dimensions for the layer."),
            }),
            ..Default::default()
        }
        .render_md(&mut cx)
        .unwrap();

        assert_eq!(
            String::from_utf8(buf).unwrap(),
            "Open settings\n\nSet the dimensions for the layer\\.\n\n"
        );
    }

    /// A block-emitting Popover after mid-line prose must not fuse with it.
    #[test]
    fn popover_composes_after_inline_text() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        cx.write_md_prepared_static(b"intro prose").unwrap();
        Popover {
            trigger: Some(PopoverTrigger {
                class: None,
                children: Some("Open settings"),
            }),
            content: Some(PopoverContent {
                class: None,
                children: Some("Set the dimensions for the layer."),
            }),
            ..Default::default()
        }
        .render_md(&mut cx)
        .unwrap();

        assert_eq!(
            String::from_utf8(buf).unwrap(),
            "intro prose\n\nOpen settings\n\nSet the dimensions for the layer\\.\n\n"
        );
    }

    #[test]
    fn popover_trigger_renders_label() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        PopoverTrigger {
            class: None,
            children: Some("Open"),
        }
        .render_md(&mut cx)
        .unwrap();
        assert_eq!(String::from_utf8(buf).unwrap(), "Open");
    }

    #[test]
    fn popover_close_renders_nothing() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        PopoverClose {
            class: None,
            children: Some("Close"),
        }
        .render_md(&mut cx)
        .unwrap();
        assert!(buf.is_empty());
    }
}

// SPDX-FileCopyrightText: 2026 Proa Labs, Inc.
// SPDX-License-Identifier: MIT OR Apache-2.0

//! Popover component - displays content in a floating panel
//!
//! Similar to Dialog but positioned relative to a trigger element.

use crate::Anatomy;

mod md;
#[allow(clippy::module_inception)]
mod popover;
mod recipe;

/// Static anatomy contract shared by SSR and the delegated runtime.
pub const POPOVER_ANATOMY: Anatomy =
    Anatomy::new("popover", &["root", "trigger", "content", "close"]);

pub use popover::{Popover, PopoverClose, PopoverContent, PopoverTrigger};
pub use recipe::{
    popover_recipe, PopoverAlign, PopoverRecipe, PopoverRecipeProps, PopoverSide, PopoverStyle,
    POPOVER_RECIPE,
};

#[cfg(test)]
mod anatomy_tests {
    use super::*;

    #[test]
    fn anatomy_declares_every_public_part() {
        assert_eq!(POPOVER_ANATOMY.scope(), "popover");
        assert_eq!(
            POPOVER_ANATOMY.parts(),
            &["root", "trigger", "content", "close"]
        );
    }
}

// SPDX-FileCopyrightText: 2026 Proa Labs, Inc.
// SPDX-License-Identifier: MIT OR Apache-2.0

//! Popover component implementations
//!
//! SSR markup for popovers. The TypeScript hydration handles positioning,
//! open/close state, and click-outside detection.
use super::recipe::{PopoverAlign, PopoverRecipeProps, PopoverSide, POPOVER_RECIPE};
use super::POPOVER_ANATOMY;
use crate::OverlayState;
use proa_core::{WebContext, WebRenderSync, WriteBuf};
use proa_macros::html_sync;
/// Popover root component - manages the popover state
pub struct Popover<Trigger = (), Content = ()> {
    /// Whether the popover starts open
    pub default_open: bool,
    /// Preferred side for the popover
    pub side: PopoverSide,
    /// Alignment relative to trigger
    pub align: PopoverAlign,
    /// The trigger element
    pub trigger: Option<Trigger>,
    /// The popover content
    pub content: Option<Content>,
}
impl Popover<(), ()> {
    pub const fn new() -> Self {
        Self {
            default_open: false,
            side: PopoverSide::Bottom,
            align: PopoverAlign::Center,
            trigger: None,
            content: None,
        }
    }
}
impl<Trigger, Content> Default for Popover<Trigger, Content> {
    fn default() -> Self {
        Self {
            default_open: false,
            side: PopoverSide::Bottom,
            align: PopoverAlign::Center,
            trigger: None,
            content: None,
        }
    }
}
impl<
        B: WriteBuf,
        Trigger: WebRenderSync<L, B>,
        Content: WebRenderSync<L, B>,
        L: ::proa_core::DataLoader,
    > WebRenderSync<L, B> for Popover<Trigger, Content>
{
    fn render(
        self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), proa_core::shared::write_buf::WriteError> {
        let style = POPOVER_RECIPE.resolve(PopoverRecipeProps {
            side: Some(self.side),
            align: Some(self.align),
        });
        let state = OverlayState::new(self.default_open, false);
        let initial_display = if state.hidden() { "none" } else { "block" };
        html_sync! {
            <div
                data-popover-root
                data-scope={POPOVER_ANATOMY.scope()}
                data-part="root"
                data-slot="popover"
                data-state={state.data_state()}
                data-side={style.side().as_str()}
                data-align={style.align().as_str()}
                class={style}
                style={proa_core::style_ok(proa_macros::text!(
                    "--proa-overlay-display: {};",
                    initial_display
                ))}
            >
                {self.trigger}
                {self.content}
            </div>
        }
        .render(cx)
    }
}
/// PopoverTrigger - the element that opens the popover
pub struct PopoverTrigger<C = ()> {
    pub class: Option<&'static str>,
    pub children: Option<C>,
}
impl<C> Default for PopoverTrigger<C> {
    fn default() -> Self {
        Self {
            class: None,
            children: None,
        }
    }
}
impl<B: WriteBuf, C: WebRenderSync<L, B>, L: ::proa_core::DataLoader> WebRenderSync<L, B>
    for PopoverTrigger<C>
{
    fn render(
        self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), proa_core::shared::write_buf::WriteError> {
        html_sync! {
            <button
                type="button"
                data-popover-trigger
                data-scope={POPOVER_ANATOMY.scope()}
                data-part="trigger"
                data-slot="popover-trigger"
                aria-haspopup="dialog"
                class={proa_macros::text!("{} {}", POPOVER_RECIPE.trigger, self.class)}
            >
                {self.children}
            </button>
        }
        .render(cx)
    }
}
/// PopoverContent - the popover container
pub struct PopoverContent<C = ()> {
    pub class: Option<&'static str>,
    pub children: Option<C>,
}
impl<C> Default for PopoverContent<C> {
    fn default() -> Self {
        Self {
            class: None,
            children: None,
        }
    }
}
impl<B: WriteBuf, C: WebRenderSync<L, B>, L: ::proa_core::DataLoader> WebRenderSync<L, B>
    for PopoverContent<C>
{
    fn render(
        self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), proa_core::shared::write_buf::WriteError> {
        html_sync! {
            <div
                data-popover-content
                data-scope={POPOVER_ANATOMY.scope()}
                data-part="content"
                data-slot="popover-content"
                role="dialog"
                tabindex="-1"
                class={proa_macros::text!("{} {}", POPOVER_RECIPE.content, self.class)}
                style="display: var(--proa-overlay-display, none); position: absolute;"
            >
                {self.children}
            </div>
        }
        .render(cx)
    }
}
/// PopoverClose - button that closes the popover
pub struct PopoverClose<C = ()> {
    pub class: Option<&'static str>,
    pub children: Option<C>,
}
impl<C> Default for PopoverClose<C> {
    fn default() -> Self {
        Self {
            class: None,
            children: None,
        }
    }
}
impl<B: WriteBuf, C: WebRenderSync<L, B>, L: ::proa_core::DataLoader> WebRenderSync<L, B>
    for PopoverClose<C>
{
    fn render(
        self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), proa_core::shared::write_buf::WriteError> {
        html_sync! {
            <button
                type="button"
                data-popover-close
                data-scope={POPOVER_ANATOMY.scope()}
                data-part="close"
                data-slot="popover-close"
                class={proa_macros::text!("{} {}", POPOVER_RECIPE.close, self.class)}
            >
                {self.children}
            </button>
        }
        .render(cx)
    }
}
#[cfg(test)]
mod tests {
    use super::*;
    use proa_core::ctx::Ctx;
    use proa_core::text::text;
    #[test]
    fn popover_renders_with_data_attributes() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Popover {
            default_open: false,
            side: PopoverSide::Bottom,
            align: PopoverAlign::Center,
            trigger: Some(text("Open")),
            content: Some(text("Content")),
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("data-popover-root"));
        assert!(html.contains("data-slot=\"popover\""));
        assert!(html.contains("data-scope=\"popover\""));
        assert!(html.contains("data-part=\"root\""));
        assert!(html.contains("data-state=\"closed\""));
        assert!(html.contains("data-side=\"bottom\""));
        assert!(html.contains("relative"));
        assert!(html.contains("inline-block"));
    }
    #[test]
    fn popover_content_renders_hidden() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        PopoverContent {
            class: None,
            children: Some(text("Hello")),
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("data-popover-content"));
        assert!(html.contains("data-slot=\"popover-content\""));
        assert!(html.contains("data-part=\"content\""));
        assert!(html.contains("var(--proa-overlay-display, none)"));
        assert!(html.contains("hidden"));
        assert!(html.contains("absolute"));
    }

    #[test]
    fn popover_parts_use_named_slots_and_custom_classes() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        PopoverTrigger {
            class: Some("trigger-extra"),
            children: Some("Open"),
        }
        .render(&mut cx)
        .unwrap();
        PopoverClose {
            class: Some("close-extra"),
            children: Some("Close"),
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("data-slot=\"popover-trigger\""));
        assert!(html.contains("data-part=\"trigger\""));
        assert!(html.contains("trigger-extra"));
        assert!(html.contains("data-slot=\"popover-close\""));
        assert!(html.contains("data-part=\"close\""));
        assert!(html.contains(r#"type="button""#));
        assert!(html.contains("close-extra"));
    }

    #[test]
    fn runtime_initializes_root_owned_state_and_canonical_ids() {
        let js = include_str!("../../../runtime/proa-free.js");
        assert!(js.contains("data-popover-id"));
        assert!(js.contains("`${id}--trigger`"));
        assert!(js.contains("`${id}--content`"));
        assert!(js.contains("initializeOnReady(() => Popover.init())"));
        assert!(js.contains("content.setAttribute('aria-hidden'"));
    }
}

// SPDX-FileCopyrightText: 2026 Proa Labs, Inc.
// SPDX-License-Identifier: MIT OR Apache-2.0

//! Popover recipe — semantic root placement and named slot classes.

use crate::theme::rounded;
use crate::tw_join;
use proa_core::shared::attr_value::AttrValue;
use proa_core::{DataLoader, WebContext, WriteBuf, WriteError};

/// Popover placement options.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default, proa_macros::ProaVariant)]
#[variant(name = "side")]
pub enum PopoverSide {
    Top,
    #[default]
    Bottom,
    Left,
    Right,
}

impl PopoverSide {
    pub const fn classes(self) -> &'static str {
        ""
    }

    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Top => "top",
            Self::Bottom => "bottom",
            Self::Left => "left",
            Self::Right => "right",
        }
    }
}

/// Popover alignment relative to its trigger.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default, proa_macros::ProaVariant)]
#[variant(name = "align")]
pub enum PopoverAlign {
    #[default]
    Center,
    Start,
    End,
}

impl PopoverAlign {
    pub const fn classes(self) -> &'static str {
        ""
    }

    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Center => "center",
            Self::Start => "start",
            Self::End => "end",
        }
    }
}

/// Optional root inputs accepted by [`PopoverRecipe::resolve`].
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub struct PopoverRecipeProps {
    pub side: Option<PopoverSide>,
    pub align: Option<PopoverAlign>,
}

/// Static named classes for every Popover part.
#[derive(Debug, Clone, Copy)]
pub struct PopoverRecipe {
    pub root: &'static str,
    pub trigger: &'static str,
    pub content: &'static str,
    pub close: &'static str,
    side_default: PopoverSide,
    align_default: PopoverAlign,
}

impl PopoverRecipe {
    pub const fn resolve(&'static self, props: PopoverRecipeProps) -> PopoverStyle {
        let side = match props.side {
            Some(side) => side,
            None => self.side_default,
        };
        let align = match props.align {
            Some(align) => align,
            None => self.align_default,
        };

        PopoverStyle {
            recipe: self,
            side,
            align,
        }
    }
}

/// Effective root placement and streamable root classes.
#[must_use]
#[derive(Debug, Clone, Copy)]
pub struct PopoverStyle {
    recipe: &'static PopoverRecipe,
    side: PopoverSide,
    align: PopoverAlign,
}

impl PopoverStyle {
    pub const fn side(self) -> PopoverSide {
        self.side
    }

    pub const fn align(self) -> PopoverAlign {
        self.align
    }
}

impl AttrValue for PopoverStyle {
    #[inline(always)]
    fn should_render(&self) -> bool {
        true
    }

    #[inline(always)]
    fn render_attr_value<B: WriteBuf, L: DataLoader>(
        &self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), WriteError> {
        cx.out.extend_static(self.recipe.root.as_bytes())
    }
}

const POPOVER_ROOT: &str = tw_join!("relative", "inline-block");

const POPOVER_TRIGGER: &str = tw_join!(
    "inline-flex",
    "items-center",
    "justify-center",
    "gap-2",
    "whitespace-nowrap",
    "rounded-md",
    "border",
    "border-input",
    "bg-background",
    "h-9",
    "px-4",
    "py-2",
    "text-sm",
    "font-medium",
    "text-foreground",
    "shadow-xs",
    "transition-all",
    "cursor-pointer",
    "hover:bg-accent",
    "hover:text-accent-foreground"
);

const POPOVER_CONTENT: &str = tw_join!(
    "hidden",
    "absolute",
    "z-50",
    "w-72",
    "border",
    "border-border",
    "bg-popover",
    "text-popover-foreground",
    "p-4",
    "shadow-md",
    "outline-hidden",
    rounded::MD
);

/// Close has no intrinsic visual treatment; it remains a named slot so
/// authors can target it consistently without the recipe owning markup.
const POPOVER_CLOSE: &str = "";

pub const POPOVER_RECIPE: PopoverRecipe = PopoverRecipe {
    root: POPOVER_ROOT,
    trigger: POPOVER_TRIGGER,
    content: POPOVER_CONTENT,
    close: POPOVER_CLOSE,
    side_default: PopoverSide::Bottom,
    align_default: PopoverAlign::Center,
};

pub const fn popover_recipe() -> &'static PopoverRecipe {
    &POPOVER_RECIPE
}

impl crate::variant_spec::ComponentSpec for PopoverRecipe {
    const NAME: &'static str = "Popover";

    fn base_classes(&self) -> &'static str {
        self.root
    }

    fn variant_metadata(&self) -> Vec<crate::variant_spec::VariantMetadata> {
        vec![
            crate::variant_spec::variant_metadata::<PopoverSide>(),
            crate::variant_spec::variant_metadata::<PopoverAlign>(),
        ]
    }

    fn anatomy(&self) -> Option<crate::Anatomy> {
        Some(super::POPOVER_ANATOMY)
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn recipe_exposes_named_slots() {
        let recipe = popover_recipe();
        assert!(recipe.root.contains("relative"));
        assert!(recipe.trigger.contains("border-input"));
        assert!(recipe.content.contains("bg-popover"));
        assert_eq!(recipe.close, "");
    }

    #[test]
    fn recipe_resolves_defaults_and_overrides() {
        let default = popover_recipe().resolve(PopoverRecipeProps::default());
        assert_eq!(default.side(), PopoverSide::Bottom);
        assert_eq!(default.align(), PopoverAlign::Center);

        let custom = popover_recipe().resolve(PopoverRecipeProps {
            side: Some(PopoverSide::Left),
            align: Some(PopoverAlign::End),
        });
        assert_eq!(custom.side(), PopoverSide::Left);
        assert_eq!(custom.align(), PopoverAlign::End);
    }

    #[test]
    fn component_metadata_uses_canonical_anatomy_and_axes() {
        use crate::variant_spec::ComponentSpec;

        assert_eq!(
            POPOVER_RECIPE.anatomy(),
            Some(super::super::POPOVER_ANATOMY)
        );
        assert_eq!(POPOVER_RECIPE.variant_metadata().len(), 2);
    }
}