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use std::collections::BTreeMap;

use crate::{interpolate_bone, ActionKeyframes, Bone};

pub use self::joint_indices::*;
pub use self::sample_desc::*;
pub use self::surrounding_keyframes::get_surrounding_keyframes;

mod joint_indices;
mod sample_desc;
mod surrounding_keyframes;

impl ActionKeyframes {
    /// Sample the bone transforms from the action
    pub fn sample(&self, joint_indices: &[u8], sample_desc: SampleDesc) -> BTreeMap<u8, Bone> {
        // let mut interpolated_bones = BTreeMap::new();
        //
        // if joint_indices.len() == 0 {
        //     return interpolated_bones;
        // }
        //
        // let keyframes = self.keyframes();
        //
        // let (lowest_keyframe, highest_keyframe) =
        //     (self.smallest_frame as f32, self.largest_frame as f32);
        //
        // let mut frames_elapsed = sample_desc.frame_offset.get();
        //
        // let mut key_time_to_sample = lowest_keyframe as f32 + frames_elapsed;
        //
        // let action_duration = (highest_keyframe - lowest_keyframe) as f32;
        //
        // if frames_elapsed > action_duration {
        //     if sample_desc.should_loop {
        //         frames_elapsed = frames_elapsed % action_duration;
        //     } else {
        //         frames_elapsed = action_duration;
        //     }
        //
        //     key_time_to_sample = lowest_keyframe as f32 + frames_elapsed;
        // }
        //
        // let (action_lower_keyframe, action_upper_keyframe) =
        //     get_surrounding_keyframes(keyframes, key_time_to_sample);
        //
        // let percent_elapsed_into_keyframe = if action_lower_keyframe == action_upper_keyframe {
        //     0.0
        // } else {
        //     (key_time_to_sample - action_lower_keyframe.frame as f32)
        //         / (action_upper_keyframe.frame - action_lower_keyframe.frame) as f32
        // };
        //
        // for joint_index in joint_indices.iter() {
        //     let joint_index = *joint_index;
        //
        //     let lower_bone = &action_lower_keyframe.bones[joint_index as usize];
        //     let upper_bone = &action_upper_keyframe.bones[joint_index as usize];
        //
        //     let interpolated_bone =
        //         interpolate_bone(&lower_bone, &upper_bone, percent_elapsed_into_keyframe);
        //     interpolated_bones.insert(joint_index, interpolated_bone);
        // }
        //
        // interpolated_bones
        unimplemented!()
    }
}