//! `pr assign-reviewer <number> <user> [--remove]` — add or remove a
//! requested reviewer on a PR. Unlike `pr assign-committer` (assignees,
//! mutate + PATCH the issue) Forgejo has a dedicated endpoint pair for review
//! requests: `POST /repos/{repo}/pulls/{index}/requested_reviewers`
//! adds, `DELETE` (same path + body) removes. Requesting a review from
//! a user who is already requested is a Forgejo-side no-op, so the verb
//! is idempotent in both directions.

use anyhow::Result;
use clap::Args as ClapArgs;
use forgejo_api::structs::PullReviewRequestOptions;

use crate::client::{Client, index};

#[derive(ClapArgs)]
pub struct Args {
    /// PR number.
    number: u64,
    /// User login to request a review from (or withdraw with `--remove`).
    user: String,
    /// Withdraw the review request instead of adding it.
    #[arg(long)]
    remove: bool,
}

pub fn run(client: &Client, args: Args) -> Result<()> {
    let (owner, name) = client.owner_repo()?;
    let idx = index(args.number)?;
    let body = PullReviewRequestOptions {
        reviewers: Some(vec![args.user.clone()]),
        team_reviewers: None,
    };
    if args.remove {
        client
            .api()
            .repo_delete_pull_review_requests(owner, name, idx, body)
            .send()?;
        println!(
            "review request withdrawn: {} on #{}",
            args.user, args.number
        );
    } else {
        client
            .api()
            .repo_create_pull_review_requests(owner, name, idx, body)
            .send()?;
        println!("review requested: {} on #{}", args.user, args.number);
    }
    Ok(())
}