added moving images into downlink lp folder

src/controller.rs

@@ -9,8 +9,7 @@ use std::{
     path::{Path, PathBuf},
     sync::{atomic::AtomicBool, mpsc, Arc},
 };
-
-use ops_sat_rs::config::{action_err::INVALID_ACTION_ID, HOME_PATH, STOP_FILE_NAME, TO_GROUND_FOLDER_EXPERIMENT};
+use ops_sat_rs::config::{action_err::INVALID_ACTION_ID, HOME_FOLDER_EXPERIMENT, HOME_PATH, STOP_FILE_NAME, TO_GROUND_FOLDER_EXPERIMENT};
 use crate::logger::LOGFILE_PATH;
 
 use crate::requests::CompositeRequest;
@@ -20,6 +19,7 @@ use crate::requests::CompositeRequest;
 pub enum ActionId {
     StopExperiment = 1,
     DownlinkLogfile = 2,
+    DownlinkImages = 3,
 }
 
 pub struct ExperimentController {
@@ -104,8 +104,7 @@ impl ExperimentController {
             ActionId::DownlinkLogfile => {
                 if let Some(logfile_path) = LOGFILE_PATH.get() {
                     if let Ok(logfile_path) = <PathBuf as Clone>::clone(logfile_path).into_os_string().into_string() {
-                        let ground_folder_path = TO_GROUND_FOLDER_EXPERIMENT.to_string();
-                        if std::fs::copy(logfile_path.as_str(), ground_folder_path.as_str()).is_err() {
+                        if std::fs::copy(logfile_path.as_str(), TO_GROUND_FOLDER_EXPERIMENT).is_err() {
                                 log::error!("Copying logfile into downlink path failed")
                         }
                     }
@@ -113,6 +112,17 @@ impl ExperimentController {
                     log::error!("Downlink path emtpy")
                 }
             }
+
+            // downlink images, default will be the last image, otherwise specified counting down (2 = second to last image, etc.)
+            ActionId::DownlinkImages => {
+                if let Ok(image_path) = get_latest_image() {
+                    if let Ok(image_path) = <PathBuf as Clone>::clone(&image_path).into_os_string().into_string() {
+                        if std::fs::copy(image_path, TO_GROUND_FOLDER_EXPERIMENT).is_err() {
+                            log::error!("Copying logfile into downlink path failed")
+                        }
+                    }
+                }
+            }
         }
     }
 
@@ -140,3 +150,34 @@ impl ExperimentController {
         check_at_path(self.home_path_stop_file.as_path());
     }
 }
+
+// TODO this may very well cause everything to crash
+pub fn get_latest_image() -> Result<PathBuf, std::io::Error> {
+    // Get the most recently modified file
+    if let Some(last_modified_file) = std::fs::read_dir(HOME_FOLDER_EXPERIMENT)?
+        .flatten()
+        .filter(|f| match f.metadata() {
+            Ok(metadata) => {metadata.is_file()}
+            Err(_) => {false}
+        })
+        .filter(|f| match f.file_name().into_string(){
+            Ok(name) => {name.ends_with(".png")}
+            Err(_) => {false}
+        })
+        .max_by_key(|x| match x.metadata() {
+            Ok(metadata) => {
+                if let Ok(time) = metadata.modified() {
+                    time
+                } else {
+                    std::time::SystemTime::UNIX_EPOCH
+                }
+            }
+            Err(_) => {
+                std::time::SystemTime::UNIX_EPOCH
+            }
+        }) {
+        Ok(last_modified_file.path())
+    } else {
+        Err(std::io::Error::other("No latest image found"))
+    }
+}