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use std::sync::Arc;
use crate::util::vertex_3d::Vertex3D;
use crate::canvas::*;
use crate::canvas::managed::handles::{CanvasFontHandle, CanvasImageHandle, CanvasTextureHandle};
use crate::canvas::managed::shader::text_shader::GlyphInstance;
use crate::canvas::canvas_state::{DrawableTest, Drawable};

///
#[derive(Debug, Clone)]
pub struct Sprite {
    pub vertices: [(f32, f32, f32); 6],
    pub ti_position: [(f32, f32); 6],

    position: (f32, f32),
    size: (f32, f32),
    color: (f32, f32, f32, f32),

    textured: bool,
    texture_handle: Option<Arc<CanvasTextureHandle>>,

    value: GlyphInstance,
}

/// Container class which implements drawable.
impl Sprite {
    pub fn new(position: (f32, f32), size: (f32, f32)) -> Sprite {
        Sprite::new_with_color(position, size, 0, (0., 0., 0., 0.))
    }

    pub fn new_with_color(position: (f32, f32),
                          size: (f32, f32),
                          depth: u32,
                          color: (f32, f32, f32, f32)) -> Sprite {
        let normalized_depth = (depth as f32 / 255.0);

        Sprite {
            vertices: [
                (position.0, position.1, normalized_depth),    // top left
                (position.0, position.1 + size.1, normalized_depth),    // bottom left
                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
                (position.0, position.1, normalized_depth),    // top left
                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
                (position.0 + size.0, position.1, normalized_depth),    // top right
            ],

            position: position,
            ti_position: [
                (-0.0, -0.0),          // top left
                (-0.0, 1.0),          // bottom left
                (1.0, 1.0),          // bottom right
                (-0.0, -0.0),          // top left
                (1.0, 1.0),          // bottom right
                (1.0, -0.0),          // top right
            ],
            size: size,
            color: color,
            textured: false,
            texture_handle: None,
            value: GlyphInstance {
                screen_position: (0.0, 0.0),
                atlas_position: (0.0, 0.0),
                atlas_size: (0.0, 0.0),
                scale: 0.0,
            },
        }
    }

    ///
    pub fn new_with_texture(position: (f32, f32),
                            size: (f32, f32),
                            depth: u32,
                            texture_handle: Arc<CanvasTextureHandle>) -> Sprite {
        let normalized_depth = (depth as f32 / 255.0);

        Sprite {
            vertices: [
                (position.0, position.1, normalized_depth),    // top left
                (position.0, position.1 + size.1, normalized_depth),    // bottom left
                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
                (position.0, position.1, normalized_depth),    // top left
                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
                (position.0 + size.0, position.1, normalized_depth),    // top right
            ],
            position: position,
            ti_position: [
                (-0.0, -0.0),          // top left
                (-0.0, 1.0),          // bottom left
                (1.0, 1.0),          // bottom right
                (-0.0, -0.0),          // top left
                (1.0, 1.0),          // bottom right
                (1.0, -0.0),          // top right
            ],
            size: size,
            color: (1.0, 0.0, 0.0, 1.0),
            textured: true,
            texture_handle: Some(texture_handle.clone()),
            value: Default::default(),
        }
    }
}

impl<H, In> DrawableTest<Vertex3D, H, In> for Sprite {
    fn get_vertices(&self) -> Vec<Vertex3D> {
        unimplemented!()
    }

    fn get_instances(&self) -> Vec<In> {
        unimplemented!()
    }

    fn get_handle(&self) -> H {
        unimplemented!()
    }
}

impl Drawable for Sprite {
    fn get_vertices(&self) -> Vec<(f32, f32, f32)> {
        self.vertices.to_vec()
    }

    fn get_color(&self) -> (f32, f32, f32, f32) {
        self.color.clone()
    }

    fn get_ti_coords(&self) -> Vec<(f32, f32)> {
        self.ti_position.to_vec()
    }

    fn get_texture_handle(&self) -> Option<Arc<CanvasTextureHandle>> {
        match self.textured {
            true => {
                self.texture_handle.clone()
            }
            false => None,
        }
    }

    fn get_image_handle(&self) -> Option<Arc<CanvasImageHandle>> {
        None
    }
}


#[derive(Debug, Clone)]
pub struct Poly {
    pub vertices: Vec<(f32, f32, f32)>,
    pub ti_position: Vec<(f32, f32)>,

    position: (f32, f32),
    size: (f32, f32),
    color: (f32, f32, f32, f32),

    textured: bool,
    texture_handle: Option<Arc<CanvasTextureHandle>>,

    // ==================================
}

/// Container class which implements drawable.
impl Poly {
    pub fn new(position: (f32, f32), size: (f32, f32)) -> Poly {
        Poly::new_with_color(position, size, 0, (0., 0., 0., 0.))
    }

    pub fn new_with_color(position: (f32, f32),
                          size: (f32, f32),
                          depth: u32,
                          color: (f32, f32, f32, f32)) -> Poly {
        let normalized_depth = (depth as f32 / 255.0);

        Poly {
            vertices: vec![
                (-0.5, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (-0.25, 0.0, normalized_depth),
                (-0.25, 0.0, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.0, 0.5, normalized_depth),
                (0.25, 0.0, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.0, 0.5, normalized_depth),
                (0.5, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.25, 0.0, normalized_depth),
                (0.25, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.5, -0.5, normalized_depth),
                (0.25, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.0, -0.1, normalized_depth),
                (-0.25, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (0.0, -0.1, normalized_depth),
                (-0.5, -0.5, normalized_depth),
                (-1.0, 1.0, normalized_depth),
                (-0.25, -0.5, normalized_depth),
            ],

            position: position,
            ti_position: vec![
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
                (0.0, 0.0),
            ],
            size: size,
            color: color,
            textured: false,
            texture_handle: None,
        }
    }
}

impl Drawable for Poly {
    fn get_vertices(&self) -> Vec<(f32, f32, f32)> {
        self.vertices.to_vec()
    }

    fn get_color(&self) -> (f32, f32, f32, f32) {
        self.color.clone()
    }

    fn get_ti_coords(&self) -> Vec<(f32, f32)> {
        self.ti_position.to_vec()
    }

    fn get_texture_handle(&self) -> Option<Arc<CanvasTextureHandle>> {
        match self.textured {
            true => {
                self.texture_handle.clone()
            }
            false => None,
        }
    }

    fn get_image_handle(&self) -> Option<Arc<CanvasImageHandle>> {
        None
    }
}


#[derive(Debug, Clone)]
pub struct Text {
    position: (f32, f32, f32),
    scale: f32,
    color: (f32, f32, f32, f32),

    text_handle: Arc<CanvasFontHandle>,

}

/// Container class which implements drawable.
impl Text {
    pub fn new(position: (f32, f32), size: (f32, f32), font_handle: Arc<CanvasFontHandle>) -> Text {
        Text::new_with_color(position, size, 0, (0., 0., 0., 0.), font_handle)
    }

    pub fn new_with_color(position: (f32, f32),
                          size: (f32, f32),
                          depth: u32,
                          color: (f32, f32, f32, f32),
                          handle: Arc<CanvasFontHandle>) -> Text {
        let normalized_depth = (depth as f32 / 255.0);

        Text {
            position: (position.0, position.1, normalized_depth),
            scale: 0.0,
            color,
            text_handle: handle,
        }
    }
}

pub trait TextHandle {
    fn do_nothing() -> u32;
}

pub trait TextInstance {
    fn get_thing() -> Vec<(u32, u32, u32)>;
}

pub trait TextVertex {
    fn get_vertices() -> Vec<(u32, u32, u32)>;
}

impl<V: TextVertex, H, In: TextInstance> DrawableTest<V, H, In> for Text {
    fn get_vertices(&self) -> Vec<V> {
        unimplemented!()
    }

    fn get_instances(&self) -> Vec<In> {
        unimplemented!()
    }

    fn get_handle(&self) -> H {
        unimplemented!()
    }
}