Checkbox

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

//! Checkbox component implementation
#![allow(unused_must_use)]

use super::recipe::{
    CheckboxColor, CheckboxIcon, CheckboxRecipeProps, CheckboxSize, CHECKBOX_RECIPE,
};
use super::CHECKBOX_ANATOMY;
use crate::free_web::{binding_to_js_attr, JsonAttr};
#[cfg(test)]
use proa_core::ctx::Ctx;
use proa_core::{WebContext, WebRenderSync, WriteBuf};
use proa_ir::{FieldRegistration, ReactiveAttr};
use proa_macros::html_sync;
/// Checkbox-specific name for the shared three-state value.
pub type CheckboxState = crate::CheckedState;
/// Type-safe Checkbox component.
///
/// A form checkbox with support for checked, unchecked, and indeterminate states.
/// Follows the shadcn/ui checkbox design with Tailwind CSS styling.
///
/// # Example
///
/// ```ignore
/// use proa_ui::{Checkbox, CheckboxSize, CheckboxState};
/// use proa_macros::html_sync;
///
/// // Basic usage
/// html_sync! {
///     <div class="flex items-center gap-2">
///         {Checkbox {
///             id: Some("terms"),
///             ..Checkbox::new()
///         }}
///         <label for="terms">"Accept terms and conditions"</label>
///     </div>
/// }.render(cx);
///
/// // Checked state
/// html_sync! {
///     <div>
///         {Checkbox {
///             state: CheckboxState::Checked,
///             ..Checkbox::new()
///         }}
///     </div>
/// }.render(cx);
/// ```
pub struct Checkbox {
    pub size: Option<CheckboxSize>,
    /// The color variant (default: Primary)
    pub color: Option<CheckboxColor>,
    /// The icon to display when checked (default: Check)
    pub icon: Option<CheckboxIcon>,
    /// The current state of the checkbox
    pub state: CheckboxState,
    /// The name attribute for form submission
    pub name: Option<&'static str>,
    /// The value attribute for form submission
    pub value: Option<&'static str>,
    /// Whether the checkbox is disabled
    pub disabled: ReactiveAttr<bool>,
    /// Whether the checkbox is required
    pub required: bool,
    pub aria_label: Option<&'static str>,
    pub aria_describedby: Option<&'static str>,
    pub aria_invalid: ReactiveAttr<bool>,
    /// Field registration data (from form.register_*)
    pub registration: Option<FieldRegistration>,
    pub class: Option<&'static str>,
    pub id: Option<&'static str>,
}
impl Checkbox {
    /// Create a new checkbox with default settings
    pub const fn new() -> Self {
        Self {
            size: None,
            color: None,
            icon: None,
            state: CheckboxState::Unchecked,
            name: None,
            value: None,
            disabled: ReactiveAttr::static_value(false),
            required: false,
            aria_label: None,
            aria_describedby: None,
            aria_invalid: ReactiveAttr::static_value(false),
            registration: None,
            class: None,
            id: None,
        }
    }
    /// Create a checked checkbox
    pub const fn checked() -> Self {
        Self {
            size: None,
            color: None,
            icon: None,
            state: CheckboxState::Checked,
            name: None,
            value: None,
            disabled: ReactiveAttr::static_value(false),
            required: false,
            aria_label: None,
            aria_describedby: None,
            aria_invalid: ReactiveAttr::static_value(false),
            registration: None,
            class: None,
            id: None,
        }
    }
}
impl Default for Checkbox {
    fn default() -> Self {
        Self::new()
    }
}
impl<B: WriteBuf, L: ::proa_core::DataLoader> WebRenderSync<L, B> for Checkbox {
    #[inline(always)]
    fn render(
        self,
        cx: &mut WebContext<L, B>,
    ) -> Result<(), proa_core::shared::write_buf::WriteError> {
        let style = CHECKBOX_RECIPE.resolve(CheckboxRecipeProps {
            size: self.size,
            color: self.color,
        });
        let icon = self.icon.unwrap_or_default();
        let icon_style = icon.style();
        let is_disabled = self.disabled.default;
        let is_aria_invalid = self.aria_invalid.default;
        let form_state = crate::FormControlState {
            disabled: is_disabled,
            invalid: is_aria_invalid,
            required: self.required,
            read_only: false,
        };
        let is_checked = self.state == CheckboxState::Checked;
        let is_indeterminate = self.state == CheckboxState::Indeterminate;
        let disabled_binding_string = binding_to_js_attr(&self.disabled.binding);
        let aria_invalid_binding_string = binding_to_js_attr(&self.aria_invalid.binding);
        let disabled_binding = disabled_binding_string.as_deref();
        let aria_invalid_binding = aria_invalid_binding_string.as_deref();
        let registration = self.registration.as_ref();
        let rules_attr = JsonAttr(registration.map(|reg| reg.rules.as_slice()));
        let data_field = registration.map(|reg| reg.data_field);
        let name_attr = registration.map(|reg| reg.name).or(self.name);
        let validate_on = registration.map(|reg| match reg.validate_on {
            proa_ir::ValidationTrigger::Blur => "blur",
            proa_ir::ValidationTrigger::Input => "input",
            proa_ir::ValidationTrigger::Change => "change",
            proa_ir::ValidationTrigger::Submit => "submit",
        });
        html_sync! {
            <input
                type="checkbox"
                class={proa_macros::text!("{} {}", style, self.class)}
                style={proa_core::style_ok(icon_style)}
                id={self.id}
                name={name_attr}
                value={self.value}
                checked={is_checked}
                disabled={is_disabled}
                required={self.required}
                aria-label={self.aria_label}
                aria-describedby={self.aria_describedby}
                aria-checked={self.state.aria_checked()}
                aria-disabled={form_state.aria_disabled()}
                aria-invalid={form_state.aria_invalid()}
                aria-required={form_state.aria_required()}
                data-checkbox
                data-scope={CHECKBOX_ANATOMY.scope()}
                data-part="root"
                data-slot="checkbox"
                data-state={self.state}
                data-disabled={form_state.data_disabled()}
                data-invalid={form_state.data_invalid()}
                data-required={form_state.data_required()}
                data-size={style.size().as_str()}
                data-color={style.color().as_str()}
                data-icon={icon.as_str()}
                data-indeterminate={is_indeterminate}
                data-field={data_field}
                data-rules={rules_attr}
                data-validate-on={validate_on}
                data-bind-disabled={disabled_binding}
                data-bind-aria-invalid={aria_invalid_binding}
            />
        }
        .render(cx)
    }
}
/// Convert a Binding to a JavaScript expression string
#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn checkbox_renders_with_defaults() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox::new().render(&mut cx).unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("<input"));
        assert!(html.contains("type=\"checkbox\""));
        assert!(html.contains("data-slot=\"checkbox\""));
        assert!(html.contains("data-size=\"default\""));
        assert!(html.contains("data-color=\"primary\""));
        assert!(html.contains("data-icon=\"check\""));
        assert!(html.contains("data-scope=\"checkbox\""));
        assert!(html.contains("data-part=\"root\""));
        assert!(html.contains("data-state=\"unchecked\""));
        assert!(html.contains("aria-checked=\"false\""));
        assert!(
            !html.contains(" checked ")
                && !html.contains(" checked>")
                && !html.contains(" checked/")
        );
    }
    #[test]
    fn checkbox_renders_checked_state() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            state: CheckboxState::Checked,
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("<input"));
        assert!(html.contains("type=\"checkbox\""));
        assert!(
            html.contains(" checked ") || html.contains(" checked>") || html.contains(" checked/")
        );
        assert!(html.contains("data-state=\"checked\""));
        assert!(html.contains("aria-checked=\"true\""));
    }
    #[test]
    fn checkbox_renders_indeterminate_state() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            state: CheckboxState::Indeterminate,
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("data-indeterminate"));
        assert!(html.contains("data-state=\"indeterminate\""));
        assert!(html.contains("aria-checked=\"mixed\""));
        assert!(
            !html.contains(" checked ")
                && !html.contains(" checked>")
                && !html.contains(" checked/")
        );
    }
    #[test]
    fn checkbox_handles_disabled_state() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            disabled: true.into(),
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains(" disabled"));
        assert!(html.contains("data-disabled=\"true\""));
        assert!(html.contains("aria-disabled=\"true\""));
    }
    #[test]
    fn checkbox_renders_with_id_and_name() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            id: Some("my-checkbox"),
            name: Some("agree"),
            value: Some("yes"),
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("id=\"my-checkbox\""));
        assert!(html.contains("name=\"agree\""));
        assert!(html.contains("value=\"yes\""));
    }
    #[test]
    fn checkbox_renders_aria_attributes() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            aria_label: Some("Accept terms"),
            aria_describedby: Some("terms-help"),
            required: true,
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("aria-label=\"Accept terms\""));
        assert!(html.contains("aria-describedby=\"terms-help\""));
        assert!(html.contains(" required"));
    }
    #[test]
    fn checkbox_renders_with_custom_class() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        Checkbox {
            class: Some("custom-checkbox"),
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("custom-checkbox"));
    }
    #[test]
    fn checkbox_size_is_reasonable() {
        assert!(std::mem::size_of::<Checkbox>() < 512);
        const _CHECKBOX: Checkbox = Checkbox::new();
    }
    #[test]
    fn checkbox_with_reactive_disabled() {
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        let disabled = !ReactiveAttr::form_state(false, "isValid");
        Checkbox {
            disabled,
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("disabled"));
        assert!(html.contains("data-bind-disabled"));
        assert!(html.contains("formState.isValid"));
    }
    #[test]
    fn checkbox_with_form_registration() {
        use proa_ir::ValidationTrigger;
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        let registration = FieldRegistration {
            name: "agree_terms",
            data_field: "agreeTerms",
            rules: vec![proa_ir::ValidationRule::Required {
                message: "You must agree to the terms",
            }],
            validate_on: ValidationTrigger::Change,
        };
        Checkbox {
            registration: Some(registration),
            state: CheckboxState::Unchecked,
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("name=\"agree_terms\""));
        assert!(html.contains("data-field=\"agreeTerms\""));
        assert!(html.contains("data-rules=\""));
        assert!(html.contains("You must agree to the terms"));
        assert!(html.contains("data-validate-on=\"change\""));
    }
    #[test]
    fn checkbox_registration_overrides_name() {
        use proa_ir::ValidationTrigger;
        let mut out = Vec::new();
        let mut cx = Ctx::with_buffer(&mut out);
        let registration = FieldRegistration {
            name: "registered_name",
            data_field: "registeredName",
            rules: vec![],
            validate_on: ValidationTrigger::Blur,
        };
        Checkbox {
            name: Some("manual_name"),
            registration: Some(registration),
            ..Checkbox::new()
        }
        .render(&mut cx)
        .unwrap();
        let html = String::from_utf8(out).unwrap();
        assert!(html.contains("name=\"registered_name\""));
        assert!(!html.contains("manual_name"));
        assert!(html.contains("data-validate-on=\"blur\""));
    }
}

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

//! rsjs-controlled checkbox pilot.

use proa_core::{DataLoader, WebContext, WebRenderSync, WriteBuf, WriteError};
use rsjs::Handler;

use super::{CheckboxColor, CheckboxRecipeProps, CheckboxSize, CHECKBOX_ANATOMY, CHECKBOX_RECIPE};

/// Minimal controlled checkbox for proving rsjs component composition.
///
/// This stays narrower than [`super::Checkbox`]: it exercises the
/// `checked` + `on_change` shape without pulling the full form-registration API
/// through rsjs.
pub struct ControlledCheckbox {
    pub checked: bool,
    pub label: &'static str,
    pub size: CheckboxSize,
    pub color: CheckboxColor,
    pub class: Option<&'static str>,
    pub on_change: Handler<bool>,
}

impl ControlledCheckbox {
    pub fn new(checked: bool, label: &'static str, on_change: Handler<bool>) -> Self {
        Self {
            checked,
            label,
            size: CheckboxSize::Default,
            color: CheckboxColor::Primary,
            class: None,
            on_change,
        }
    }
}

#[rsjs::rsjs(component, client)]
impl<B: WriteBuf, L: DataLoader> WebRenderSync<L, B> for ControlledCheckbox {
    fn render(self, cx: &mut WebContext<L, B>) -> Result<(), WriteError> {
        let checked = rsjs::signal(self.checked);
        let style = CHECKBOX_RECIPE.resolve(CheckboxRecipeProps {
            size: Some(self.size),
            color: Some(self.color),
        });
        let size = style.size().as_str();
        let color = style.color().as_str();

        proa_macros::html_sync! {
            <label
                data_controlled_checkbox
                data_slot="controlled-checkbox"
                class={CHECKBOX_RECIPE.controlled_root}
            >
                <input
                    type="checkbox"
                    data_checkbox
                    data_scope={CHECKBOX_ANATOMY.scope()}
                    data_part="root"
                    data_slot="checkbox"
                    data_state={if checked.get() { "checked" } else { "unchecked" }}
                    data_size={size}
                    data_color={color}
                    class={rsjs::server_attr(proa_macros::text!("{} {}", style, self.class))}
                    checked={checked.get()}
                    aria_checked={if checked.get() { "true" } else { "false" }}
                    on_change={|event: rsjs::ChangeEvent<rsjs::elem::Input>| self.on_change.call(event.current_checked())}
                />
                <span>{self.label}</span>
            </label>
        }
        .render(cx)
    }
}

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

    #[test]
    fn controlled_checkbox_renders() {
        let html = proa_core::render_to_string(ControlledCheckbox {
            checked: true,
            label: "Accept terms",
            size: CheckboxSize::Default,
            color: CheckboxColor::Primary,
            class: Some("extra-checkbox"),
            on_change: rsjs::noop_handler(),
        });

        assert!(html.contains("data-controlled-checkbox"));
        assert!(html.contains("data-slot=\"controlled-checkbox\""));
        assert!(html.contains(r#"data-scope="checkbox""#));
        assert!(html.contains(r#"data-part="root""#));
        assert!(html.contains(r#"data-state="checked""#));
        assert!(html.contains("Accept terms"));
        assert!(html.contains("checked"));
        assert!(html.contains("aria-checked=\"true\""));
        assert!(html.contains("extra-checkbox"));
    }

    #[test]
    fn controlled_checkbox_uses_resolved_recipe_axes() {
        let html = proa_core::render_to_string(ControlledCheckbox {
            checked: false,
            label: "Ship updates",
            size: CheckboxSize::Lg,
            color: CheckboxColor::Success,
            class: None,
            on_change: rsjs::noop_handler(),
        });

        assert!(html.contains(r#"data-size="lg""#));
        assert!(html.contains(r#"data-color="success""#));
        assert!(html.contains(CheckboxSize::Lg.classes()));
        assert!(html.contains(CheckboxColor::Success.classes()));
    }
}

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

//! Markdown rendering for the checkbox component.

#[cfg(feature = "rsjs")]
use super::ControlledCheckbox;
use super::{Checkbox, CheckboxState};
use crate::components::md_support::line_boundary;
use proa_core::WebContext;
use proa_core::{MdRenderSync, WriteBuf, WriteError};
use proa_macros::md_sync;

/// Checkbox renders as a task-list item: `- [x]` / `- [ ]` / `- [-]` for
/// indeterminate, followed by the aria-label when one is set.
impl<Loader: ::proa_core::DataLoader, B: WriteBuf> MdRenderSync<Loader, B> for Checkbox {
    fn render_md(self, cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        // Fresh line (not a full blank-line boundary): a lone checkbox after
        // prose needs its own line, but consecutive task items must stay
        // adjacent with no blank line between them.
        line_boundary(cx)?;
        cx.write_md_list_indent()?;
        match self.state {
            CheckboxState::Checked => md_sync! { "- [x]" }.render_md(cx)?,
            CheckboxState::Indeterminate => md_sync! { "- [-]" }.render_md(cx)?,
            CheckboxState::Unchecked => md_sync! { "- [ ]" }.render_md(cx)?,
        }
        if let Some(label) = self.aria_label {
            md_sync! { " " { label } }.render_md(cx)?;
        }
        md_sync! { "" "\n" }.render_md(cx)
    }
}

/// ControlledCheckbox renders as a task-list item with its label.
#[cfg(feature = "rsjs")]
impl<Loader: ::proa_core::DataLoader, B: WriteBuf> MdRenderSync<Loader, B> for ControlledCheckbox {
    fn render_md(self, cx: &mut WebContext<Loader, B>) -> Result<(), WriteError> {
        line_boundary(cx)?;
        cx.write_md_list_indent()?;
        if self.checked {
            md_sync! { "- [x] " { self.label } "\n" }.render_md(cx)
        } else {
            md_sync! { "- [ ] " { self.label } "\n" }.render_md(cx)
        }
    }
}

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

    #[test]
    fn checkbox_unchecked_renders_task_item() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        Checkbox::new().render_md(&mut cx).unwrap();
        assert_eq!(String::from_utf8(buf).unwrap(), "- [ ]\n");
    }

    #[test]
    fn checkbox_checked_with_label() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        Checkbox {
            state: CheckboxState::Checked,
            aria_label: Some("Accept terms"),
            ..Checkbox::new()
        }
        .render_md(&mut cx)
        .unwrap();
        assert_eq!(String::from_utf8(buf).unwrap(), "- [x] Accept terms\n");
    }

    #[test]
    fn checkbox_indeterminate_mark() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        Checkbox {
            state: CheckboxState::Indeterminate,
            ..Checkbox::new()
        }
        .render_md(&mut cx)
        .unwrap();
        assert_eq!(String::from_utf8(buf).unwrap(), "- [-]\n");
    }

    /// A checkbox composed after mid-line prose must start its task item on
    /// a fresh line, while consecutive checkboxes stay blank-line free.
    #[test]
    fn checkbox_after_prose_starts_on_fresh_line() {
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        cx.write_md_prepared_static(b"intro prose").unwrap();
        Checkbox {
            state: CheckboxState::Checked,
            aria_label: Some("Accept terms"),
            ..Checkbox::new()
        }
        .render_md(&mut cx)
        .unwrap();
        Checkbox {
            aria_label: Some("Subscribe"),
            ..Checkbox::new()
        }
        .render_md(&mut cx)
        .unwrap();
        let output = String::from_utf8(buf).unwrap();
        assert!(
            output.contains("intro prose\n- [x] Accept terms"),
            "output: {output}"
        );
        assert!(
            output.contains("- [x] Accept terms\n- [ ] Subscribe\n"),
            "output: {output}"
        );
    }

    #[cfg(feature = "rsjs")]
    #[test]
    fn controlled_checkbox_renders_label() {
        use super::super::{CheckboxColor, CheckboxSize};
        let mut buf = Vec::new();
        let mut cx = WebContext::with_buffer(&mut buf);
        ControlledCheckbox {
            checked: true,
            label: "Enable alerts",
            size: CheckboxSize::Default,
            color: CheckboxColor::Primary,
            class: None,
            on_change: rsjs::noop_handler(),
        }
        .render_md(&mut cx)
        .unwrap();
        assert_eq!(String::from_utf8(buf).unwrap(), "- [x] Enable alerts\n");
    }
}

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

#![allow(clippy::module_inception)]
//! Checkbox component - form checkbox with tri-state support
//!
//! The Checkbox component provides a styled checkbox with support for
//! checked, unchecked, and indeterminate states.

use crate::Anatomy;

mod checkbox;
#[cfg(feature = "rsjs")]
mod controlled;
mod md;
mod recipe;

/// Stable DOM root exposed by the native Checkbox control.
pub const CHECKBOX_ANATOMY: Anatomy = Anatomy::new("checkbox", &["root"]);

// Re-export checkbox types
pub use checkbox::{Checkbox, CheckboxState};
#[cfg(feature = "rsjs")]
pub use controlled::ControlledCheckbox;

// Re-export recipe types
pub use recipe::{
    checkbox_classes, checkbox_recipe, CheckboxColor, CheckboxIcon, CheckboxRecipe,
    CheckboxRecipeProps, CheckboxSize, CheckboxStyle, CHECKBOX_RECIPE,
};

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

    #[test]
    fn anatomy_declares_the_native_control_root() {
        assert_eq!(CHECKBOX_ANATOMY.scope(), "checkbox");
        assert_eq!(CHECKBOX_ANATOMY.parts(), &["root"]);
    }
}

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

//! Checkbox recipe - type-safe styling system for Checkbox component
//!
//! Provides size variants, color variants, icon variants, and base styling for the Checkbox component.

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

/// Base styles for the checkbox (without color-specific checked state styling)
mod base {
    use super::*;

    pub const CHECKBOX_BASE: &str = tw_join!(
        // Layout - peer for label styling
        "peer",
        // Size and shape
        "size-4",
        "shrink-0",
        "rounded-[4px]",
        // Border
        "border border-input",
        // Background
        "bg-background",
        // Shadow
        "shadow-xs",
        // Focus ring (shadcn style)
        "focus-visible:outline-hidden",
        "focus-visible:ring-[3px]",
        "focus-visible:ring-ring/50",
        "focus-visible:border-ring",
        // Disabled state
        "disabled:cursor-not-allowed",
        "disabled:opacity-50",
        // Aria invalid (error state)
        "aria-invalid:border-destructive",
        "aria-invalid:ring-destructive/20",
        "dark:aria-invalid:ring-destructive/40",
        // Appearance - hide default checkbox styling
        "appearance-none",
        // Cursor
        "cursor-pointer",
        // Background sizing for icons
        "bg-[length:100%_100%]",
        "bg-center",
        "bg-no-repeat"
    );
}

/// Color variants for the checkbox
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default, proa_macros::ProaVariant)]
#[variant(name = "color")]
pub enum CheckboxColor {
    /// Primary color (default) - typically blue/indigo
    #[default]
    Primary,
    /// Destructive/danger color - typically red
    Destructive,
    /// Success color - typically green
    Success,
}

impl CheckboxColor {
    /// Get the Tailwind classes for this color's checked state
    pub const fn classes(self) -> &'static str {
        match self {
            CheckboxColor::Primary => "checked:bg-primary checked:border-primary",
            CheckboxColor::Destructive => "checked:bg-destructive checked:border-destructive",
            CheckboxColor::Success => "checked:bg-green-600 checked:border-green-600",
        }
    }

    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Primary => "primary",
            Self::Destructive => "destructive",
            Self::Success => "success",
        }
    }
}

/// Icon variants for the checkbox checkmark
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
pub enum CheckboxIcon {
    /// Standard checkmark (default)
    #[default]
    Check,
    /// X/Cross mark
    Cross,
    /// Minus/dash (typically used for indeterminate, but can be used as checked icon)
    Minus,
    /// Circle/dot
    Dot,
}

impl CheckboxIcon {
    /// Get the CSS style string to set the --checkbox-icon custom property.
    /// Returns a style like: --checkbox-icon: url('data:...');
    /// Note: SVGs use black stroke/fill since they're used as mask-image,
    /// and the actual color is controlled by --checkbox-icon-color CSS variable.
    pub const fn style(self) -> Option<&'static str> {
        match self {
            // Default check icon - no style needed, CSS fallback handles it
            CheckboxIcon::Check => None,
            // Non-default icons need explicit style (use black for mask)
            CheckboxIcon::Cross => Some("--checkbox-icon: url('data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 24 24%27 fill=%27none%27 stroke=%27black%27 stroke-width=%273%27 stroke-linecap=%27round%27 stroke-linejoin=%27round%27%3E%3Cpath d=%27M18 6 6 18%27/%3E%3Cpath d=%27M6 6 18 18%27/%3E%3C/svg%3E')"),
            CheckboxIcon::Minus => Some("--checkbox-icon: url('data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 24 24%27 fill=%27none%27 stroke=%27black%27 stroke-width=%273%27 stroke-linecap=%27round%27 stroke-linejoin=%27round%27%3E%3Cpath d=%27M5 12h14%27/%3E%3C/svg%3E')"),
            CheckboxIcon::Dot => Some("--checkbox-icon: url('data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 24 24%27%3E%3Ccircle cx=%2712%27 cy=%2712%27 r=%275%27 fill=%27black%27/%3E%3C/svg%3E')"),
        }
    }

    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Check => "check",
            Self::Cross => "cross",
            Self::Minus => "minus",
            Self::Dot => "dot",
        }
    }
}

/// Size variants for the checkbox
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default, proa_macros::ProaVariant)]
#[variant(name = "size")]
pub enum CheckboxSize {
    Sm,
    #[default]
    Default,
    Lg,
}

impl CheckboxSize {
    /// Get the Tailwind classes for this size
    pub const fn classes(self) -> &'static str {
        match self {
            CheckboxSize::Sm => "size-3.5",
            CheckboxSize::Default => "size-4",
            CheckboxSize::Lg => "size-5",
        }
    }

    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Sm => "sm",
            Self::Default => "default",
            Self::Lg => "lg",
        }
    }
}

/// Optional inputs accepted by [`CheckboxRecipe::resolve`].
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub struct CheckboxRecipeProps {
    pub size: Option<CheckboxSize>,
    pub color: Option<CheckboxColor>,
}

/// Fully typed checkbox recipe with compile-time defaults.
#[derive(Debug, Clone, Copy)]
pub struct CheckboxRecipe {
    base: &'static str,
    /// Wrapper used by the rsjs-controlled checkbox surface.
    pub controlled_root: &'static str,
    size_default: CheckboxSize,
    color_default: CheckboxColor,
}

pub const CHECKBOX_CONTROLLED_ROOT: &str = "inline-flex items-center gap-2";

/// Global checkbox recipe instance
pub const CHECKBOX_RECIPE: CheckboxRecipe = CheckboxRecipe {
    base: base::CHECKBOX_BASE,
    controlled_root: CHECKBOX_CONTROLLED_ROOT,
    size_default: CheckboxSize::Default,
    color_default: CheckboxColor::Primary,
};

impl CheckboxRecipe {
    pub const fn resolve(&'static self, props: CheckboxRecipeProps) -> CheckboxStyle {
        let size = match props.size {
            Some(size) => size,
            None => self.size_default,
        };
        let color = match props.color {
            Some(color) => color,
            None => self.color_default,
        };
        CheckboxStyle {
            recipe: self,
            size,
            color,
        }
    }
}

/// Fully resolved, streamable Checkbox style.
#[must_use]
#[derive(Debug, Clone, Copy)]
pub struct CheckboxStyle {
    recipe: &'static CheckboxRecipe,
    size: CheckboxSize,
    color: CheckboxColor,
}

impl CheckboxStyle {
    pub const fn size(self) -> CheckboxSize {
        self.size
    }

    pub const fn color(self) -> CheckboxColor {
        self.color
    }
}

impl AttrValue for CheckboxStyle {
    #[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.base.as_bytes())?;
        cx.out.extend_static(b" ")?;
        cx.out.extend_static(self.size.classes().as_bytes())?;
        cx.out.extend_static(b" ")?;
        cx.out.extend_static(self.color.classes().as_bytes())
    }
}

/// Get the global checkbox recipe
pub const fn checkbox_recipe() -> &'static CheckboxRecipe {
    &CHECKBOX_RECIPE
}

/// Note: Icon variants are now handled via CSS custom properties (--checkbox-icon)
/// which are set via inline style in the component.
pub const fn checkbox_classes(size: CheckboxSize, color: CheckboxColor) -> CheckboxStyle {
    CHECKBOX_RECIPE.resolve(CheckboxRecipeProps {
        size: Some(size),
        color: Some(color),
    })
}

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

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

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

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

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

    #[test]
    fn checkbox_recipe_generates_default() {
        let style = checkbox_recipe().resolve(CheckboxRecipeProps::default());
        assert!(checkbox_recipe().base.contains("peer"));
        assert!(checkbox_recipe().base.contains("rounded-[4px]"));
        assert!(checkbox_recipe().controlled_root.contains("inline-flex"));
        assert_eq!(style.size(), CheckboxSize::Default);
        assert_eq!(style.color(), CheckboxColor::Primary);
    }

    #[test]
    fn checkbox_recipe_supports_sizes() {
        for (size, expected) in [(CheckboxSize::Sm, "size-3.5"), (CheckboxSize::Lg, "size-5")] {
            let style = checkbox_recipe().resolve(CheckboxRecipeProps {
                size: Some(size),
                color: None,
            });
            assert_eq!(style.size(), size);
            assert!(style.size().classes().contains(expected));
        }
    }

    #[test]
    fn recipe_is_fully_const() {
        const RECIPE: &CheckboxRecipe = &CHECKBOX_RECIPE;
        const STYLE: CheckboxStyle = RECIPE.resolve(CheckboxRecipeProps {
            size: Some(CheckboxSize::Lg),
            color: Some(CheckboxColor::Success),
        });
        assert_eq!(STYLE.size(), CheckboxSize::Lg);
        assert_eq!(STYLE.color(), CheckboxColor::Success);
    }
}