#![allow(non_upper_case_globals)]
use bitflags::bitflags;
use std::os::raw::{c_char, c_int};

use crate::render::renderer::TextureId;
use crate::string::ImStr;
use crate::widget::color_editors::*;
use crate::widget::combo_box::*;
use crate::widget::image::{Image, ImageButton};
use crate::widget::menu::*;
use crate::widget::progress_bar::ProgressBar;
use crate::widget::selectable::*;
use crate::window::{Window, WindowFlags, WindowFocusedFlags};
use crate::{Id, Ui};

#[deprecated(since = "0.2.0", note = "use ColorEditFlags instead")]
pub type ImGuiColorEditFlags = ColorEditFlags;

#[deprecated(since = "0.2.0", note = "use ComboFlags instead")]
pub type ImGuiComboFlags = ComboBoxFlags;

bitflags!(
    /// Flags for igBeginDragDropSource(), igAcceptDragDropPayload()
    #[repr(C)]
    pub struct ImGuiDragDropFlags: c_int {
        /// By default, a successful call to igBeginDragDropSource opens a tooltip so you can
        /// display a preview or description of the source contents. This flag disable this
        /// behavior.
        const SourceNoPreviewTooltip = 1;
        /// By default, when dragging we clear data so that igIsItemHovered() will return false, to
        /// avoid subsequent user code submitting tooltips. This flag disable this behavior so you
        /// can still call igIsItemHovered() on the source item.
        const SourceNoDisableHover = 1 << 1;
        /// Disable the behavior that allows to open tree nodes and collapsing header by holding
        /// over them while dragging a source item.
        const SourceNoHoldToOpenOthers = 1 << 2;
        /// Allow items such as igText(), igImage() that have no unique identifier to be used as
        /// drag source, by manufacturing a temporary identifier based on their window-relative
        /// position. This is extremely unusual within the dear imgui ecosystem and so we made it
        /// explicit.
        const SourceAllowNullID = 1 << 3;
        /// External source (from outside of imgui), won't attempt to read current item/window
        /// info. Will always return true. Only one Extern source can be active simultaneously.
        const SourceExtern = 1 << 4;
        /// Automatically expire the payload if the source cease to be submitted (otherwise
        /// payloads are persisting while being dragged)
        const SourceAutoExpirePayload = 1 << 5;
        /// igAcceptDragDropPayload() will returns true even before the mouse button is released.
        /// You can then call igIsDelivery() to test if the payload needs to be delivered.
        const AcceptBeforeDelivery = 1 << 10;
        /// Do not draw the default highlight rectangle when hovering over target.
        const AcceptNoDrawDefaultRect = 1 << 11;
        /// Request hiding the igBeginDragDropSource tooltip from the igBeginDragDropTarget site.
        const AcceptNoPreviewTooltip = 1 << 12;
        /// For peeking ahead and inspecting the payload before delivery.
        const AcceptPeekOnly = ImGuiDragDropFlags::AcceptBeforeDelivery.bits
            | ImGuiDragDropFlags::AcceptNoDrawDefaultRect.bits;
    }
);

bitflags!(
    /// Flags for indictating which corner of a rectangle should be rounded
    #[repr(C)]
    pub struct ImDrawCornerFlags: c_int {
        const TopLeft = 1;
        const TopRight = 1 << 1;
        const BotLeft = 1 << 2;
        const BotRight = 1 << 3;
        const Top = ImDrawCornerFlags::TopLeft.bits
            | ImDrawCornerFlags::TopRight.bits;
        const Bot = ImDrawCornerFlags::BotLeft.bits
            | ImDrawCornerFlags::BotRight.bits;
        const Left = ImDrawCornerFlags::TopLeft.bits
            | ImDrawCornerFlags::BotLeft.bits;
        const Right = ImDrawCornerFlags::TopRight.bits
            | ImDrawCornerFlags::BotRight.bits;
        const All = 0xF;
    }
);

bitflags!(
    /// Draw list flags
    #[repr(C)]
    pub struct ImDrawListFlags: c_int {
        const AntiAliasedLines = 1;
        const AntiAliasedFill = 1 << 1;
    }
);

bitflags!(
    /// Flags for text inputs
    #[repr(C)]
    pub struct ImGuiInputTextFlags: c_int {
        /// Allow 0123456789.+-*/
        const CharsDecimal = 1;
        /// Allow 0123456789ABCDEFabcdef
        const CharsHexadecimal = 1 << 1;
        /// Turn a..z into A..Z
        const CharsUppercase = 1 << 2;
        /// Filter out spaces, tabs
        const CharsNoBlank = 1 << 3;
        /// Select entire text when first taking mouse focus
        const AutoSelectAll = 1 << 4;
        /// Return 'true' when Enter is pressed (as opposed to when the value was modified)
        const EnterReturnsTrue = 1 << 5;
        /// Call user function on pressing TAB (for completion handling)
        const CallbackCompletion = 1 << 6;
        /// Call user function on pressing Up/Down arrows (for history handling)
        const CallbackHistory = 1 << 7;
        /// Call user function every time. User code may query cursor position, modify text buffer.
        const CallbackAlways = 1 << 8;
        /// Call user function to filter character.
        const CallbackCharFilter = 1 << 9;
        /// Pressing TAB input a '\t' character into the text field
        const AllowTabInput = 1 << 10;
        /// In multi-line mode, unfocus with Enter, add new line with Ctrl+Enter (default is
        /// opposite: unfocus with Ctrl+Enter, add line with Enter).
        const CtrlEnterForNewLine = 1 << 11;
        /// Disable following the cursor horizontally
        const NoHorizontalScroll = 1 << 12;
        /// Insert mode
        const AlwaysInsertMode = 1 << 13;
        /// Read-only mode
        const ReadOnly = 1 << 14;
        /// Password mode, display all characters as '*'
        const Password = 1 << 15;
        /// Disable undo/redo.
        const NoUndoRedo = 1 << 16;
        /// Allow 0123456789.+-*/eE (Scientific notation input)
        const CharsScientific = 1 << 17;
        /// Allow buffer capacity resize + notify when the string wants to be resized
        const CallbackResize = 1 << 18;
    }
);

#[deprecated(since = "0.2.0", note = "use SelectableFlags instead")]
pub type ImGuiSelectableFlags = SelectableFlags;

bitflags!(
    /// Flags for trees and collapsing headers
    #[repr(C)]
    pub struct ImGuiTreeNodeFlags: c_int {
        /// Draw as selected
        const Selected = 1;
        /// Full colored frame (e.g. for collapsing header)
        const Framed = 1 << 1;
        /// Hit testing to allow subsequent widgets to overlap this one
        const AllowItemOverlap = 1 << 2;
        /// Don't do a tree push when open (e.g. for collapsing header) = no extra indent nor
        /// pushing on ID stack
        const NoTreePushOnOpen = 1 << 3;
        /// Don't automatically and temporarily open node when Logging is active (by default
        /// logging will automatically open tree nodes)
        const NoAutoOpenOnLog = 1 << 4;
        /// Default node to be open
        const DefaultOpen = 1 << 5;
        /// Need double-click to open node
        const OpenOnDoubleClick = 1 << 6;
        /// Only open when clicking on the arrow part. If OpenOnDoubleClick is also set,
        /// single-click arrow or double-click all box to open.
        const OpenOnArrow = 1 << 7;
        /// No collapsing, no arrow (use as a convenience for leaf nodes).
        const Leaf = 1 << 8;
        /// Display a bullet instead of arrow
        const Bullet = 1 << 9;
        /// Use FramePadding (even for an unframed text node) to vertically align text baseline to
        /// regular widget height.
        const FramePadding = 1 << 10;
        const NavLeftJumpsBackHere = 1 << 13;

        const CollapsingHeader  =
            ImGuiTreeNodeFlags::Framed.bits | ImGuiTreeNodeFlags::NoTreePushOnOpen.bits |
            ImGuiTreeNodeFlags::NoAutoOpenOnLog.bits;
    }
);

#[deprecated(since = "0.2.0", note = "use WindowFlags instead")]
pub type ImGuiWindowFlags = WindowFlags;

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::Window::new(...) instead")]
    pub fn window<'p>(&self, name: &'p ImStr) -> Window<'p> {
        Window::new(name)
    }
    #[deprecated(since = "0.2.0", note = "use Ui::window_size instead")]
    pub fn get_window_size(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetWindowSize_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::window_pos instead")]
    pub fn get_window_pos(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetWindowPos_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::content_region_max instead")]
    pub fn get_content_region_max(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetContentRegionMax_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::content_region_avail instead")]
    pub fn get_content_region_avail(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetContentRegionAvail_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::window_content_region_min instead")]
    pub fn get_window_content_region_min(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetWindowContentRegionMin_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::window_content_region_max instead")]
    pub fn get_window_content_region_max(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetWindowContentRegionMax_nonUDT2() };
        size.into()
    }
    #[deprecated(
        since = "0.2.0",
        note = "use Ui::is_window_focused(WindowFlags::RootWindow) instead"
    )]
    pub fn is_root_window_focused(&self) -> bool {
        unsafe { sys::igIsWindowFocused(WindowFocusedFlags::ROOT_WINDOW.bits() as i32) }
    }
    #[deprecated(
        since = "0.2.0",
        note = "use Ui::is_window_focused(WindowFlags::ChildWindows) instead"
    )]
    pub fn is_child_window_focused(&self) -> bool {
        unsafe { sys::igIsWindowFocused(WindowFocusedFlags::CHILD_WINDOWS.bits() as i32) }
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::ProgressBar::new(...) instead")]
    pub fn progress_bar<'p>(&self, fraction: f32) -> ProgressBar<'p> {
        ProgressBar::new(fraction)
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::ColorEdit::new(...) instead")]
    pub fn color_edit<'p, V: Into<EditableColor<'p>>>(
        &self,
        label: &'p ImStr,
        value: V,
    ) -> ColorEdit<'p> {
        ColorEdit::new(label, value.into())
    }
    #[deprecated(since = "0.2.0", note = "use imgui::ColorPicker::new(...) instead")]
    pub fn color_picker<'p, V: Into<EditableColor<'p>>>(
        &self,
        label: &'p ImStr,
        value: V,
    ) -> ColorPicker<'p> {
        ColorPicker::new(label, value.into())
    }
    #[deprecated(since = "0.2.0", note = "use imgui::ColorButton::new(...) instead")]
    pub fn color_button<'p>(&self, desc_id: &'p ImStr, color: [f32; 4]) -> ColorButton<'p> {
        ColorButton::new(desc_id, color.into())
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use Ui::cursor_screen_pos instead")]
    pub fn get_cursor_screen_pos(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetCursorScreenPos_nonUDT2() };
        size.into()
    }
    #[deprecated(since = "0.2.0", note = "use Ui::cursor_pos instead")]
    pub fn get_cursor_pos(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetCursorPos_nonUDT2() };
        size.into()
    }
    #[deprecated(
        since = "0.2.0",
        note = "use Ui::text_line_height_with_spacing instead"
    )]
    pub fn get_text_line_height_with_spacing(&self) -> f32 {
        unsafe { sys::igGetTextLineHeightWithSpacing() }
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use Ui::current_column_index instead")]
    pub fn get_column_index(&self) -> i32 {
        unsafe { sys::igGetColumnIndex() }
    }
    #[deprecated(since = "0.2.0", note = "use Ui::column_offset instead")]
    pub fn get_column_offset(&self, column_index: i32) -> f32 {
        unsafe { sys::igGetColumnOffset(column_index) }
    }
    #[deprecated(since = "0.2.0", note = "use Ui::column_width instead")]
    pub fn get_column_width(&self, column_index: i32) -> f32 {
        unsafe { sys::igGetColumnWidth(column_index) }
    }
    #[deprecated(since = "0.2.0", note = "use Ui::column_count instead")]
    pub fn get_columns_count(&self) -> i32 {
        unsafe { sys::igGetColumnsCount() }
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use Ui::push_id instead")]
    pub fn with_id<'a, F, I>(&self, id: I, f: F)
    where
        F: FnOnce(),
        I: Into<Id<'a>>,
    {
        let _token = self.push_id(id);
        f();
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use Ui::item_rect_size instead")]
    pub fn get_item_rect_size(&self) -> [f32; 2] {
        let size = unsafe { sys::igGetItemRectSize_nonUDT2() };
        size.into()
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::Image::new(...) instead")]
    pub fn image(&self, texture: TextureId, size: [f32; 2]) -> Image {
        Image::new(texture, size)
    }
    #[deprecated(since = "0.2.0", note = "use imgui::ImageButton::new(...) instead")]
    pub fn image_button(&self, texture: TextureId, size: [f32; 2]) -> ImageButton {
        ImageButton::new(texture, size)
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(
        since = "0.2.0",
        note = "use imgui::ComboBox::new(...), and either build_simple(), build_simple_string(), or custom rendering (e.g. selectables) instead"
    )]
    pub fn combo<'p, StringType: AsRef<ImStr> + ?Sized>(
        &self,
        label: &'p ImStr,
        current_item: &mut i32,
        items: &'p [&'p StringType],
        height_in_items: i32,
    ) -> bool {
        let items_inner: Vec<*const c_char> = items
            .into_iter()
            .map(|item| item.as_ref().as_ptr())
            .collect();
        unsafe {
            sys::igCombo(
                label.as_ptr(),
                current_item,
                items_inner.as_ptr() as *mut *const c_char,
                items_inner.len() as i32,
                height_in_items,
            )
        }
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::Selectable::new(...) instead")]
    pub fn selectable(
        &self,
        label: &ImStr,
        selected: bool,
        flags: SelectableFlags,
        size: [f32; 2],
    ) -> bool {
        unsafe { sys::igSelectable(label.as_ptr(), selected, flags.bits() as i32, size.into()) }
    }
}

impl<'ui> Ui<'ui> {
    #[deprecated(since = "0.2.0", note = "use imgui::MenuItem::new(...) instead")]
    pub fn menu_item<'a>(&self, label: &'a ImStr) -> MenuItem<'a> {
        MenuItem::new(label)
    }
}