Initial commit.

backend/application/src/configuration/service.rs

@@ -0,0 +1,46 @@
+use std::io::{Error, ErrorKind};
+use rand::distr::Alphanumeric;
+use rand::RngExt;
+use surveillant_systeme_domain::configuration::port::ConfigurationPort;
+
+pub struct ConfigurationService {
+    configuration_port: Box<dyn ConfigurationPort>
+}
+
+impl ConfigurationService {
+    pub fn new(configuration_repository: Box<dyn ConfigurationPort>) -> Self {
+        Self { configuration_port: configuration_repository }
+    }
+
+    pub fn create_initialisation_code(&self) -> Result<(), Error> {
+        let initialisation_code = random_string();
+        self.configuration_port.save(initialisation_code)
+    }
+
+    pub fn get_initialisation_code(&self) -> Result<Option<String>, Error> {
+        self.configuration_port.get_initialisation_code()
+            .map_err(|database_error| Error::new(
+                ErrorKind::Other,
+                format!("Unable to retrieve the initialisation code… Cause: {}", database_error)
+            ))
+    }
+
+    pub fn set_database_initialised(&self) -> Result<(), Error> {
+        self.configuration_port.erase_initialisation_code()
+            .map_err(|database_error| Error::new(
+                ErrorKind::Other,
+                format!("Unable to erase the initialisation code in database… Cause: {}", database_error)
+            ))
+    }
+}
+
+impl Clone for ConfigurationService {
+    fn clone(&self) -> Self {
+        ConfigurationService::new(self.configuration_port.clone())
+    }
+}
+
+fn random_string() -> String {
+    let mut rng = rand::rng();
+    (0..10).map(|_| rng.sample(Alphanumeric) as char).collect()
+}