//! `issue-create --title <t> [body sources] [--assignee <u>] [repo]`
//! — create an issue. Prints the issue URL.

use anyhow::Result;
use clap::Args as ClapArgs;
use serde_json::{Value, json};

use crate::body;
use crate::client::Client;

#[derive(ClapArgs)]
pub struct Args {
    /// Issue title (required).
    #[arg(long)]
    title: String,
    /// Inline body text.
    #[arg(long, conflicts_with = "body_file")]
    body: Option<String>,
    /// Read body from a file. `-` means stdin.
    #[arg(long = "body-file")]
    body_file: Option<String>,
    /// Initial assignee login.
    #[arg(long)]
    assignee: Option<String>,
}

/// # Errors
///
/// Propagates any I/O error from the body input (`--body-file`,
/// stdin), any transport error from the Forgejo REST call (network
/// unreachable, 4xx/5xx response, token missing/invalid), and any
/// I/O error from writing the issue URL to stdout.
pub fn run(client: &Client, args: Args) -> Result<()> {
    let body = body::resolve(args.body.as_deref(), args.body_file.as_deref())?.unwrap_or_default();
    let repo = client.repo();
    let mut payload = json!({ "title": args.title, "body": body });
    if let Some(a) = args.assignee {
        payload["assignees"] = json!([a]);
    }
    let resp = client.post_json(&format!("/repos/{repo}/issues"), &payload)?;
    if let Some(url) = resp.get("html_url").and_then(Value::as_str) {
        println!("{url}");
    }
    Ok(())
}