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use anyhow::{bail, Context, Result};
#[cfg(not(test))]
use crate::client::Client;
#[cfg(test)]
use crate::client::MockConnect;
use crate::{
client::Connect,
git::{Repo, RepoActions},
repo_ref,
sub_commands::{
list::get_most_recent_patch_with_ancestors, push::fetch_pr_and_most_recent_patch_chain,
},
};
pub async fn launch() -> Result<()> {
let git_repo = Repo::discover().context("cannot find a git repository")?;
let (main_or_master_branch_name, _) = git_repo
.get_main_or_master_branch()
.context("no main or master branch")?;
let root_commit = git_repo
.get_root_commit()
.context("failed to get root commit of the repository")?;
let branch_name = git_repo
.get_checked_out_branch_name()
.context("cannot get checked out branch name")?;
if branch_name == main_or_master_branch_name {
bail!("checkout a branch associated with a PR first")
}
#[cfg(not(test))]
let client = Client::default();
#[cfg(test)]
let client = <MockConnect as std::default::Default>::default();
let repo_ref = repo_ref::fetch(
&git_repo,
root_commit.to_string(),
&client,
client.get_fallback_relays().clone(),
)
.await?;
let (_pr_event, commit_events) =
fetch_pr_and_most_recent_patch_chain(&client, &repo_ref, &root_commit, &branch_name)
.await?;
if git_repo.has_outstanding_changes()? {
bail!("cannot pull changes when repository is not clean. discard changes and try again.");
}
let most_recent_pr_patch_chain = get_most_recent_patch_with_ancestors(commit_events)
.context("cannot get most recent patch for PR")?;
let applied = git_repo
.apply_patch_chain(&branch_name, most_recent_pr_patch_chain)
.context("cannot apply patch chain")?;
if applied.is_empty() {
println!("branch already up-to-date");
} else {
println!("applied {} new commits", applied.len(),);
}
Ok(())
}
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