pub use gpui2::{
    div, Element, ElementId, Component, ParentElement, SharedString, StatefulInteractive,
    StatelessInteractive, Styled, ViewContext, WindowContext,
};

pub use crate::elevation::*;
use crate::settings::user_settings;
pub use crate::{old_theme, theme, ButtonVariant, ElementExt, Theme};

use gpui2::{rems, Hsla, Rems};
use strum::EnumIter;

pub fn ui_size(cx: &mut WindowContext, size: f32) -> Rems {
    const UI_SCALE_RATIO: f32 = 0.875;

    let settings = user_settings(cx);

    rems(*settings.ui_scale * UI_SCALE_RATIO * size)
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum FileSystemStatus {
    #[default]
    None,
    Conflict,
    Deleted,
}

impl std::fmt::Display for FileSystemStatus {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "{}",
            match self {
                Self::None => "None",
                Self::Conflict => "Conflict",
                Self::Deleted => "Deleted",
            }
        )
    }
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum GitStatus {
    #[default]
    None,
    Created,
    Modified,
    Deleted,
    Conflict,
    Renamed,
}

impl GitStatus {
    pub fn hsla(&self, cx: &WindowContext) -> Hsla {
        let theme = theme(cx);

        match self {
            Self::None => theme.transparent,
            Self::Created => theme.git_created,
            Self::Modified => theme.git_modified,
            Self::Deleted => theme.git_deleted,
            Self::Conflict => theme.git_conflict,
            Self::Renamed => theme.git_renamed,
        }
    }
}

impl std::fmt::Display for GitStatus {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "{}",
            match self {
                Self::None => "None",
                Self::Created => "Created",
                Self::Modified => "Modified",
                Self::Deleted => "Deleted",
                Self::Conflict => "Conflict",
                Self::Renamed => "Renamed",
            }
        )
    }
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum DiagnosticStatus {
    #[default]
    None,
    Error,
    Warning,
    Info,
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum IconSide {
    #[default]
    Left,
    Right,
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum OrderMethod {
    #[default]
    Ascending,
    Descending,
    MostRecent,
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum Shape {
    #[default]
    Circle,
    RoundedRectangle,
}

#[derive(Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum DisclosureControlVisibility {
    #[default]
    OnHover,
    Always,
}

#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, EnumIter)]
pub enum DisclosureControlStyle {
    /// Shows the disclosure control only when hovered where possible.
    ///
    /// More compact, but not available everywhere.
    ChevronOnHover,
    /// Shows an icon where possible, otherwise shows a chevron.
    ///
    /// For example, in a file tree a folder or file icon is shown
    /// instead of a chevron
    Icon,
    /// Always shows a chevron.
    Chevron,
    /// Completely hides the disclosure control where possible.
    None,
}

#[derive(Debug, PartialEq, Eq, Clone, Copy, EnumIter)]
pub enum OverflowStyle {
    Hidden,
    Wrap,
}

#[derive(Default, PartialEq, Copy, Clone, EnumIter, strum::Display)]
pub enum InteractionState {
    #[default]
    Enabled,
    Hovered,
    Active,
    Focused,
    Disabled,
}

impl InteractionState {
    pub fn if_enabled(&self, enabled: bool) -> Self {
        if enabled {
            *self
        } else {
            InteractionState::Disabled
        }
    }
}

#[derive(Default, PartialEq)]
pub enum SelectedState {
    #[default]
    Unselected,
    PartiallySelected,
    Selected,
}

#[derive(Default, Debug, Copy, Clone, PartialEq, Eq)]
pub enum Toggleable {
    Toggleable(ToggleState),
    #[default]
    NotToggleable,
}

impl Toggleable {
    pub fn is_toggled(&self) -> bool {
        match self {
            Self::Toggleable(ToggleState::Toggled) => true,
            _ => false,
        }
    }
}

impl From<ToggleState> for Toggleable {
    fn from(state: ToggleState) -> Self {
        Self::Toggleable(state)
    }
}

#[derive(Default, Debug, Copy, Clone, PartialEq, Eq)]
pub enum ToggleState {
    /// The "on" state of a toggleable element.
    ///
    /// Example:
    ///     - A collasable list that is currently expanded
    ///     - A toggle button that is currently on.
    Toggled,
    /// The "off" state of a toggleable element.
    ///
    /// Example:
    ///     - A collasable list that is currently collapsed
    ///     - A toggle button that is currently off.
    #[default]
    NotToggled,
}

impl From<Toggleable> for ToggleState {
    fn from(toggleable: Toggleable) -> Self {
        match toggleable {
            Toggleable::Toggleable(state) => state,
            Toggleable::NotToggleable => ToggleState::NotToggled,
        }
    }
}

impl From<bool> for ToggleState {
    fn from(toggled: bool) -> Self {
        if toggled {
            ToggleState::Toggled
        } else {
            ToggleState::NotToggled
        }
    }
}