feat(new parachain): show polkadot version

Cargo.toml

@@ -24,6 +24,7 @@ tempfile = "3.8"
 tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }
 url = { version = "2.5", optional = true }
 walkdir = "2.4"
+regex="1.5.4"
 
 # contracts
 contract-build = { version = "4.0.0-rc.3", optional = true }

src/commands/new/parachain.rs

@@ -7,7 +7,7 @@ use clap::{Args, Parser};
 use std::{fs, path::Path};
 use strum_macros::{Display, EnumString};
 
-use cliclack::{clear_screen, confirm, intro, outro, outro_cancel, set_theme};
+use cliclack::{clear_screen, confirm, intro, log, outro, outro_cancel, set_theme};
 
 #[derive(Clone, Parser, Debug, Display, EnumString, PartialEq)]
 pub enum Template {
@@ -69,7 +69,7 @@ impl NewParachainCommand {
 		}
 		let mut spinner = cliclack::spinner();
 		spinner.start("Generating parachain...");
-		instantiate_template_dir(
+		let tag = instantiate_template_dir(
 			&self.template,
 			destination_path,
 			Config {
@@ -84,6 +84,9 @@ impl NewParachainCommand {
 			}
 		}
 		spinner.stop("Generation complete");
+		if let Some(tag) = tag {
+			log::info(format!("Version: {}", tag))?;
+		}
 		outro(format!("cd into \"{}\" and enjoy hacking! 🚀", &self.name))?;
 		Ok(())
 	}

src/engines/contract_engine.rs

@@ -19,8 +19,9 @@ pub fn create_smart_contract(name: String, target: &Option<PathBuf>) -> anyhow::
 }
 
 pub fn build_smart_contract(path: &Option<PathBuf>) -> anyhow::Result<()> {
-	// If the user specifies a path (which is not the current directory), it will have to manually add a Cargo.toml file. If not provided, pop-cli will ask the user for a specific path. or
-	// ask to the user the specific path (Like cargo-contract does)
+	// If the user specifies a path (which is not the current directory), it will have to manually
+	// add a Cargo.toml file. If not provided, pop-cli will ask the user for a specific path. or ask
+	// to the user the specific path (Like cargo-contract does)
 	let manifest_path;
 	if path.is_some() {
 		let full_path: PathBuf =

src/engines/parachain_engine.rs

@@ -20,7 +20,11 @@ pub struct Config {
 }
 
 /// Creates a new template at `target` dir
-pub fn instantiate_template_dir(template: &Template, target: &Path, config: Config) -> Result<()> {
+pub fn instantiate_template_dir(
+	template: &Template,
+	target: &Path,
+	config: Config,
+) -> Result<Option<String>> {
 	sanitize(target)?;
 	use Template::*;
 	let url = match template {
@@ -30,15 +34,15 @@ pub fn instantiate_template_dir(template: &Template, target: &Path, config: Conf
 			return instantiate_base_template(target, config);
 		},
 	};
-	clone_and_degit(url, target)?;
+	let tag = clone_and_degit(url, target)?;
 	Repository::init(target)?;
-	Ok(())
+	Ok(tag)
 }
 
-pub fn instantiate_base_template(target: &Path, config: Config) -> Result<()> {
+pub fn instantiate_base_template(target: &Path, config: Config) -> Result<Option<String>> {
 	let temp_dir = ::tempfile::TempDir::new_in(std::env::temp_dir())?;
 	let source = temp_dir.path();
-	clone_and_degit("https://github.com/r0gue-io/base-parachain", source)?;
+	let tag = clone_and_degit("https://github.com/r0gue-io/base-parachain", source)?;
 
 	for entry in WalkDir::new(&source) {
 		let entry = entry?;
@@ -66,7 +70,7 @@ pub fn instantiate_base_template(target: &Path, config: Config) -> Result<()> {
 	let network = Network { node: "parachain-template-node".into() };
 	write_to_file(&target.join("network.toml"), network.render().expect("infallible").as_ref());
 	Repository::init(target)?;
-	Ok(())
+	Ok(tag)
 }
 
 pub fn build_parachain(path: &Option<PathBuf>) -> anyhow::Result<()> {
@@ -90,7 +94,7 @@ mod tests {
 			decimals: 18,
 			initial_endowment: "1000000".to_string(),
 		};
-		let result: anyhow::Result<()> = instantiate_base_template(temp_dir.path(), config);
+		let result: anyhow::Result<String> = instantiate_base_template(temp_dir.path(), config);
 		assert!(result.is_ok());
 		Ok(temp_dir)
 	}

src/helpers.rs

@@ -1,6 +1,7 @@
 use anyhow::Result;
 use cliclack::{log, outro_cancel};
 use git2::{IndexAddOption, Repository, ResetType};
+use regex::Regex;
 use std::{
 	env::current_dir,
 	fs::{self, OpenOptions},
@@ -43,11 +44,30 @@ pub(crate) fn write_to_file<'a>(path: &Path, contents: &'a str) {
 }
 
 /// Clone `url` into `target` and degit it
-pub(crate) fn clone_and_degit(url: &str, target: &Path) -> Result<()> {
+pub(crate) fn clone_and_degit(url: &str, target: &Path) -> Result<Option<String>> {
 	let repo = Repository::clone(url, target)?;
+
+	// fetch tags from remote
+	let release = fetch_latest_tag(&repo);
+
 	let git_dir = repo.path();
 	fs::remove_dir_all(&git_dir)?;
-	Ok(())
+	Ok(release)
+}
+
+/// Fetch the latest release from a repository
+fn fetch_latest_tag(repo: &Repository) -> Option<String> {
+	let version_reg = Regex::new(r"v\d+\.\d+\.\d+").expect("Valid regex");
+	let tags = repo.tag_names(None).ok()?;
+	// Start from latest tags
+	for tag in tags.iter().rev() {
+		if let Some(tag) = tag {
+			if version_reg.is_match(tag) {
+				return Some(tag.to_string());
+			}
+		}
+	}
+	None
 }
 
 /// Init a new git repo on creation of a parachain