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use std::{path::PathBuf, sync::RwLock};
use sha2::{Digest, Sha256};
use synchronoise::SignalEvent;
use crate::{config::Config, error::TracerError};
use super::ImageAction;
pub struct SavePng {}
impl ImageAction for SavePng {
fn action(
&self,
screen_buffer: &RwLock<Vec<u32>>,
_event: &SignalEvent,
config: &Config,
) -> Result<(), TracerError> {
screen_buffer
.read()
.map_err(|e| TracerError::FailedToAcquireLock(e.to_string()))
.map(|buf| {
// Convert ARGB8 to RGBA8
buf.iter()
.map(|v| {
let a: u32 = (v >> 24) & 0xff;
let r: u32 = (v >> 16) & 0xff;
let g: u32 = (v >> 8) & 0xff;
let b: u32 = v & 0xff;
(r << 24) | (g << 16) | (b << 8) | a
})
.flat_map(|val| val.to_be_bytes())
.collect::<Vec<u8>>()
})
.and_then(|buf| match &config.image_output_dir {
Some(image_dir) => {
println!("Saving image...");
let mut sha = Sha256::new();
sha.update(buf.as_slice());
let mut file_path = PathBuf::from(image_dir);
file_path.push(format!("{:X}.png", sha.finalize()));
img::save_buffer(
file_path.as_path(),
buf.as_slice(),
config.screen.width as u32,
config.screen.height as u32,
img::ColorType::Rgba8,
)
.map_err(|e| {
let error = e.to_string();
TracerError::ImageSave(error)
})
.map(|_| {
println!("Saved image to: {}", file_path.to_string_lossy());
})
}
None => Ok(()),
})
}
}
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