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use bot_config::Config;
use bot_consts::{NIXPKGS_REMOTE, NIXPKGS_URL};
use bot_error::Error;
use bot_http::{self as http, GithubClientExt};
use git_tracker::Tracker;
use log::trace;
use serenity::all::CreateEmbed;
use serenity::builder::{CreateCommand, CreateCommandOption, CreateInteractionResponseFollowup};
use serenity::model::application::{
CommandInteraction, CommandOptionType, InstallationContext, ResolvedOption, ResolvedValue,
};
use serenity::prelude::Context;
const REPO_OWNER: &str = "NixOS";
const REPO_NAME: &str = "nixpkgs";
/// Collect the status of the commit SHA [`commit_sha`] in each of the nixpkgs
/// branches in [`branches`], using the repository at path [`repository_path`]
///
/// # Errors
///
/// Will return [`Err`] if we can't start tracking a repository at the given path,
/// or if we can't determine if the branch has given commit
fn collect_statuses_in<'a>(
repository_path: &str,
commit_sha: &str,
branches: impl IntoIterator<Item = &'a String>,
) -> Result<Vec<String>, Error> {
// start tracking nixpkgs
let tracker = Tracker::from_path(repository_path)?;
// check to see what branches it's in
let mut status_results = vec![];
for branch_name in branches {
trace!("Checking for commit in {branch_name}");
let full_branch_name = format!("{NIXPKGS_REMOTE}/{branch_name}");
let has_pr = tracker.branch_contains_sha(&full_branch_name, commit_sha)?;
if has_pr {
status_results.push(format!("`{branch_name}` ✅"));
}
}
Ok(status_results)
}
pub async fn respond(
ctx: &Context,
http: &http::Client,
config: &Config,
command: &CommandInteraction,
) -> Result<(), Error> {
// this will probably take a while
command.defer(&ctx).await?;
let options = command.data.options();
let Some(ResolvedOption {
value: ResolvedValue::Integer(pr),
..
}) = options.first()
else {
let resp = CreateInteractionResponseFollowup::new()
.content("Please provide a valid pull request!");
command.create_followup(&ctx, resp).await?;
return Ok(());
};
let Ok(pr_id) = u64::try_from(*pr) else {
let resp =
CreateInteractionResponseFollowup::new().content("PR numbers aren't negative...");
command.create_followup(&ctx, resp).await?;
return Ok(());
};
// find out what commit our PR was merged in
let Some(commit_sha) = http.merge_commit_for(REPO_OWNER, REPO_NAME, pr_id).await? else {
let response = CreateInteractionResponseFollowup::new()
.content("It seems this pull request is very old. I can't track it");
command.create_followup(&ctx, response).await?;
return Ok(());
};
let status_results = collect_statuses_in(
&config.nixpkgs_path,
&commit_sha,
config.nixpkgs_branches.iter(),
)?;
// if we don't find the commit in any branches from above, we can pretty safely assume
// it's an unmerged PR
let embed_description: String = if status_results.is_empty() {
"It doesn't look like this PR has been merged yet! (or maybe I just haven't updated)"
.to_string()
} else {
status_results.join("\n")
};
let embed = CreateEmbed::new()
.title(format!("Nixpkgs PR #{} Status", *pr))
.url(format!("{NIXPKGS_URL}/pull/{pr}"))
.description(embed_description);
let resp = CreateInteractionResponseFollowup::new().embed(embed);
command.create_followup(&ctx, resp).await?;
Ok(())
}
pub fn register() -> CreateCommand {
CreateCommand::new("track")
.description("Track a nixpkgs PR")
.add_integration_type(InstallationContext::User)
.add_option(
CreateCommandOption::new(CommandOptionType::Integer, "pull_request", "PR to track")
.required(true),
)
}
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