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use {
    crate::{
        makepad_live_compiler::{
            LiveType,
            LiveNode,
            LiveId,
            LiveModuleId,
            LiveTypeInfo,
            LiveNodeSliceApi
        },
        live_traits::{LiveNew, LiveApply, ApplyFrom},
        makepad_live_tokenizer::{LiveErrorOrigin, live_error_origin},
        id_pool::*,
        makepad_error_log::*,
        makepad_live_id::*,
        cx::Cx,
        os::CxOsTexture,
        live_traits::*,
    },
    std::rc::Rc,
};


#[derive(Clone)]
pub struct Texture(Rc<PoolId>);

#[derive(Clone, Debug, PartialEq, Copy)]
pub struct TextureId(pub (crate) usize, u64);

impl Texture {
    pub fn texture_id(&self) -> TextureId {TextureId(self.0.id, self.0.generation)}
}

#[derive(Default)]
pub struct CxTexturePool(pub (crate) IdPool<CxTexture>);
impl CxTexturePool {
    pub fn alloc(&mut self) -> Texture {
        Texture(Rc::new(self.0.alloc()))
    }
}

impl std::ops::Index<TextureId> for CxTexturePool {
    type Output = CxTexture;
    fn index(&self, index: TextureId) -> &Self::Output {
        let d = &self.0.pool[index.0];
        if d.generation != index.1 {
            error!("Texture id generation wrong {} {} {}", index.0, d.generation, index.1)
        }
        &d.item
    }
}

impl std::ops::IndexMut<TextureId> for CxTexturePool {
    fn index_mut(&mut self, index: TextureId) -> &mut Self::Output {
        let d = &mut self.0.pool[index.0];
        if d.generation != index.1 {
            error!("Texture id generation wrong {} {} {}", index.0, d.generation, index.1)
        }
        &mut d.item
    }
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub enum TextureFormat {
    Default,
    ImageBGRA,
    Depth32Stencil8,
    RenderBGRA,
    RenderBGRAf16,
    RenderBGRAf32,
    SharedBGRA(crate::cx_stdin::PresentableImageId),
    //    ImageBGRAf32,
    //    ImageRf32,
    //    ImageRGf32,
    //    MappedBGRA,
    //    MappedBGRAf32,
    //    MappedRf32,
    //    MappedRGf32,
}
impl TextureFormat{
    pub fn is_shared(&self)->bool{
         match self{
             Self::SharedBGRA(_)=>true,
             _=>false
         }
    }
}
#[derive(Clone, Copy, PartialEq)]
pub struct TextureDesc {
    pub format: TextureFormat,
    pub width: Option<usize>,
    pub height: Option<usize>,
}

impl Default for TextureDesc {
    fn default() -> Self {
        TextureDesc {
            format: TextureFormat::Default,
            width: None,
            height: None,
        }
    }
}

impl LiveHook for Texture {}
impl LiveNew for Texture {
    fn live_design_with(_cx:&mut Cx){}
    fn new(cx: &mut Cx) -> Self {
        let texture = cx.textures.alloc();
        texture
    }
    
    fn live_type_info(_cx: &mut Cx) -> LiveTypeInfo {
        LiveTypeInfo {
            module_id: LiveModuleId::from_str(&module_path!()).unwrap(),
            live_type: LiveType::of::<Self>(),
            live_ignore: true,
            fields: Vec::new(),
            type_name: id_lut!(Texture)
        }
    }
}

impl LiveApply for Texture {
    fn apply(&mut self, cx: &mut Cx, _apply_from: ApplyFrom, start_index: usize, nodes: &[LiveNode]) -> usize {
        
        if !nodes[start_index].value.is_structy_type() {
            cx.apply_error_wrong_type_for_struct(live_error_origin!(), start_index, nodes, live_id!(View));
            return nodes.skip_node(start_index);
        }
        
        let mut index = start_index + 1;
        loop {
            if nodes[index].value.is_close() {
                index += 1;
                break;
            }
            match nodes[index].id {
                _ => {
                    cx.apply_error_no_matching_field(live_error_origin!(), index, nodes);
                    index = nodes.skip_node(index);
                }
            }
        }
        return index;
    }
}


impl Texture {
    pub fn set_desc(&self, cx: &mut Cx, desc: TextureDesc) {
        let cxtexture = &mut cx.textures[self.texture_id()];
        cxtexture.desc = desc;
    }
    
    pub fn get_desc(&self, cx: &mut Cx) -> TextureDesc {
        cx.textures[self.texture_id()].desc.clone()
    }
    
    pub fn swap_image_u32(&self, cx: &mut Cx, image_u32: &mut Vec<u32>) {
        let cxtexture = &mut cx.textures[self.texture_id()];
        std::mem::swap(&mut cxtexture.image_u32, image_u32);
        cxtexture.update_image = true;
    }
}


#[derive(Default)]
pub struct CxTexture {
    pub (crate) desc: TextureDesc,
    pub (crate) image_u32: Vec<u32>,
    //pub(crate) _image_f32: Vec<f32>,
    pub (crate) update_image: bool,
    pub os: CxOsTexture
}