Added importing existing server

core/src/implementations/minecraft/mod.rs

@@ -144,6 +144,7 @@ pub struct SetupConfig {
     pub version: String,
     pub flavour: Flavour,
     pub port: u32,
+    pub existing_server_path: Option<String>,
     pub cmd_args: Vec<String>,
     pub description: Option<String>,
     pub min_ram: Option<u32>,
@@ -247,6 +248,17 @@ impl MinecraftInstance {
             true,
         );
 
+        let existing_server_path_setting = SettingManifest::new_value_with_type(
+            "existing_server_path".to_string(),
+            "Existing Server Path".to_string(),
+            "Optionally specify path to an existing server to import into lodestone".to_string(),
+            None,
+            ConfigurableValueType::String { regex: None },
+            None,
+            false,
+            true,
+        );
+
         let min_ram_setting = SettingManifest::new_required_value(
             "min_ram".to_string(),
             "Minimum RAM".to_string(),
@@ -282,6 +294,7 @@ impl MinecraftInstance {
 
         section_1_map.insert("version".to_string(), version_setting);
         section_1_map.insert("port".to_string(), port_setting);
+        section_1_map.insert("existing_server_path".to_string(), existing_server_path_setting);
 
         let mut section_2_map = IndexMap::new();
 
@@ -344,6 +357,13 @@ impl MinecraftInstance {
             .try_as_unsigned_integer()
             .unwrap();
 
+        let existing_server_path = setup_value
+            .get_unique_setting("existing_server_path")
+            .unwrap()
+            .get_value()
+            .map(|v| v.try_as_string().unwrap())
+            .cloned();
+
         let min_ram = setup_value
             .get_unique_setting("min_ram")
             .unwrap()
@@ -375,6 +395,7 @@ impl MinecraftInstance {
             description,
             version: version.clone(),
             port,
+            existing_server_path,
             min_ram: Some(min_ram),
             max_ram: Some(max_ram),
             cmd_args,
@@ -449,15 +470,43 @@ impl MinecraftInstance {
             "1/4: Creating directories",
             1.0,
         ));
-        tokio::fs::create_dir_all(&path_to_instance)
-            .await
+        if let Some(existing_server_path) = config.existing_server_path {
+            if !existing_server_path.trim().is_empty() {
+                let existing_server_path = std::path::Path::new(&existing_server_path);
+                fs_extra::dir::copy(existing_server_path, &path_to_instance, &fs_extra::dir::CopyOptions::new().content_only(true))
+                    .context("Could not copy existing server for instance")
+                    .map_err(|e| {
+                        error!("{e}");
+                        e
+                    })?;
+                Ok(())
+            } else {
+                tokio::fs::create_dir_all(&path_to_instance).await
+            }
+        } else {
+            tokio::fs::create_dir_all(&path_to_instance).await
+        }
             .and(tokio::fs::create_dir_all(&path_to_macros).await)
             .and(tokio::fs::create_dir_all(&path_to_resources.join("mods")).await)
             .and(tokio::fs::create_dir_all(&path_to_resources.join("worlds")).await)
             .and(tokio::fs::create_dir_all(&path_to_resources.join("defaults")).await)
             .and(tokio::fs::write(&path_to_eula, "#generated by Lodestone\neula=true").await)
             .and(
-                tokio::fs::write(&path_to_properties, format!("server-port={}", config.port)).await,
+                tokio::fs::write(&path_to_properties,
+                    if let Ok(contents) = tokio::fs::read(&path_to_properties).await {
+                        let contents = String::from_utf8_lossy(&contents);
+                        if contents.contains("server-port") {
+                            fancy_regex::Regex::new(r"server-port=[0-9]*")
+                                .unwrap()
+                                .replace_all(&contents, format!("server-port={}", config.port))
+                                .to_string()
+                        } else {
+                            format!("{}\nserver-port={}", contents, config.port)
+                        }
+                    } else {
+                        format!("server-port={}", config.port)
+                    }
+                ).await
             )
             .context("Could not create some files or directories for instance")
             .map_err(|e| {