Add a route to upload update to the platform

central_backend/src/ota/mod.rs

@@ -1 +1,2 @@
+pub mod ota_manager;
 pub mod ota_update;

central_backend/src/ota/ota_manager.rs

@@ -0,0 +1,24 @@
+use crate::app_config::AppConfig;
+use crate::ota::ota_update::OTAPlatform;
+use crate::utils::files_utils;
+
+/// Check out whether a given update exists or not
+pub fn update_exists(platform: OTAPlatform, version: &semver::Version) -> anyhow::Result<bool> {
+    Ok(AppConfig::get()
+        .path_ota_update(platform, version)
+        .is_file())
+}
+
+/// Save a new firmware update
+pub fn save_update(
+    platform: OTAPlatform,
+    version: &semver::Version,
+    update: &[u8],
+) -> anyhow::Result<()> {
+    let path = AppConfig::get().path_ota_update(platform, version);
+    files_utils::create_directory_if_missing(path.parent().unwrap())?;
+
+    std::fs::write(path, update)?;
+
+    Ok(())
+}

central_backend/src/ota/ota_update.rs

@@ -1,5 +1,22 @@
+use std::fmt::{Display, Formatter};
+
 #[derive(serde::Serialize, serde::Deserialize, Debug, Copy, Clone, Eq, PartialEq)]
 pub enum OTAPlatform {
     #[serde(rename = "Wt32-Eth01")]
     Wt32Eth01,
 }
+
+impl Display for OTAPlatform {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let s = serde_json::to_string(&self).unwrap().replace('"', "");
+        write!(f, "{s}")
+    }
+}
+
+/// Single OTA update information
+#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, Eq, PartialEq)]
+pub struct OTAUpdate {
+    platform: OTAPlatform,
+    version: semver::Version,
+    file_size: usize,
+}