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worry about it. You need to have Docker installed on your machine. You can find instructions on how to install Docker on your machine [here](https://docs.docker.com/engine/install/). -## Usage +## Installation -First, clone the repository: -```bash -git clone https://github.com/rails/rails-new.git -cd rails-new -``` + +## Usage To generate a new Rails application, you can run the following command: ```bash -bin/rails-new myapp +rails-new myapp ``` Or with options: ```bash -bin/rails-new myapp --main +rails-new myapp --main ``` diff --git a/bin/rails-new b/bin/rails-new deleted file mode 100755 index 7a2d0a4..0000000 --- a/bin/rails-new +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/env sh - -# This script is to generate a new Rails application using the Dockerfile in this repository. - -# The first argument is the name of the new Rails application. - -# Ruby version variable -RUBY_VERSION=3.2.3 - -# Rails version variable -RAILS_VERSION=7.1.3 - -# Build the image -docker build \ - --build-arg RUBY_VERSION=$RUBY_VERSION \ - --build-arg RAILS_VERSION=$RAILS_VERSION \ - -t rails-new-$RUBY_VERSION-$RAILS_VERSION . - -# Run the image -docker run -v $(pwd):/$(pwd) -w $(pwd) rails-new-$RUBY_VERSION-$RAILS_VERSION rails new $@ diff --git a/src/docker_client.rs b/src/docker_client.rs new file mode 100644 index 0000000..84188e9 --- /dev/null +++ b/src/docker_client.rs @@ -0,0 +1,43 @@ +use std::process::{Command, Stdio}; + +pub struct DockerClient {} + +impl DockerClient { + pub fn build_image(ruby_version: &str, rails_version: &str) -> Command { + let mut command = Command::new("docker"); + + command + .arg("build") + .arg("--build-arg") + .arg(format!("RUBY_VERSION={}", ruby_version)) + .arg("--build-arg") + .arg(format!("RAILS_VERSION={}", rails_version)) + .arg("-t") + .arg(format!("rails-new-{}-{}", ruby_version, rails_version)) + .arg("-") + .stdin(Stdio::piped()); + + command + } + + pub fn run_image(ruby_version: &str, rails_version: &str, args: Vec) -> Command { + let binding = std::env::current_dir().unwrap(); + let current_dir = binding.to_str().unwrap(); + + let mut command = Command::new("docker"); + + command + .arg("run") + .arg("--rm") + .arg("-v") + .arg(format!("{}:{}", current_dir, current_dir)) + .arg("-w") + .arg(current_dir) + .arg(format!("rails-new-{}-{}", ruby_version, rails_version)) + .arg("rails") + .arg("new") + .args(args); + + command + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..91084e9 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,43 @@ +// Write a CLI program that call the bash file rails-new inside the bin folder. + +// use std::process::Command; +mod docker_client; +mod rails_new; +use rails_new::Cli; +use std::io::Write; + +use clap::Parser; + +use crate::docker_client::DockerClient; + +fn main() { + let cli = Cli::parse(); + + // read the content of the DOCKERFILE and store it in a variable + let dockerfile = include_bytes!("../Dockerfile"); + + let ruby_version = cli.ruby_version; + let rails_version = cli.rails_version; + + // Run docker build --build-arg RUBY_VERSION=$RUBY_VERSION --build-arg RAILS_VERSION=$RAILS_VERSION -t rails-new-$RUBY_VERSION-$RAILS_VERSION + // passing the content of DOCKERFILE to the command stdin + let mut child = DockerClient::build_image(&ruby_version, &rails_version) + .spawn() + .expect("Failed to execute process"); + + let mut stdin = child.stdin.take().expect("Failed to open stdin"); + std::thread::spawn(move || { + stdin.write_all(dockerfile).unwrap(); + }); + + let status = child.wait().expect("failed to wait on child"); + + assert!(status.success()); + + // Run the image with docker run -v $(pwd):/$(pwd) -w $(pwd) rails-new-$RUBY_VERSION-$RAILS_VERSION rails new $@ + let status = DockerClient::run_image(&ruby_version, &rails_version, cli.args) + .status() + .expect("Failed to execute process"); + + assert!(status.success()); +} diff --git a/src/rails_new.rs b/src/rails_new.rs new file mode 100644 index 0000000..b0ca823 --- /dev/null +++ b/src/rails_new.rs @@ -0,0 +1,32 @@ +use clap::Parser; + +#[derive(Parser)] +#[command(version, about, long_about = None)] +pub struct Cli { + #[clap(trailing_var_arg = true, required = true)] + /// arguments passed to `rails new` + pub args: Vec, + #[clap(long, short = 'u', default_value = "3.2.3")] + pub ruby_version: String, + #[clap(long, short = 'r', default_value = "7.1.3")] + pub rails_version: String, +} + +#[test] +fn verify_cli() { + use clap::CommandFactory; + Cli::command().debug_assert() +} + +#[test] +fn arguments_are_directed_to_rails_new() -> Result<(), Box> { + use clap::CommandFactory; + + let m = Cli::command().get_matches_from(vec!["rails-new", "my_app", "--main"]); + + let trail: Vec<_> = m.get_many::("args").unwrap().collect(); + + assert_eq!(trail, &["my_app", "--main"]); + + Ok(()) +} diff --git a/tests/cli.rs b/tests/cli.rs new file mode 100644 index 0000000..4339e52 --- /dev/null +++ b/tests/cli.rs @@ -0,0 +1,17 @@ +use assert_cmd::prelude::*; +use predicates::prelude::*; +use std::process::Command; + +#[test] +fn requires_a_name() -> Result<(), Box> { + let mut cmd = Command::cargo_bin("rails-new")?; + + cmd.assert() + .failure() + .stderr(predicate::str::contains( + "the following required arguments were not provided:", + )) + .stderr(predicate::str::contains("...")); + + Ok(()) +}