hive-forge: rewrite bash CLI helper as a rust binary (closes #280)

hive-forge/src/verbs/attach.rs

@@ -0,0 +1,69 @@
+//! `attach-issue <number> <file> [repo]` and `attach-comment
+//! <comment-id> <file> [repo]` — upload a file as an attachment.
+//! Prints the browser download URL.
+
+use std::path::PathBuf;
+
+use anyhow::{Result, bail};
+use clap::Args as ClapArgs;
+use serde_json::Value;
+
+use crate::client::Client;
+
+#[derive(ClapArgs)]
+pub struct IssueArgs {
+    /// Issue number.
+    number: u64,
+    /// File path to upload.
+    file: PathBuf,
+    /// Repo override.
+    repo: Option<String>,
+}
+
+#[derive(ClapArgs)]
+pub struct CommentArgs {
+    /// Comment id.
+    id: u64,
+    /// File path to upload.
+    file: PathBuf,
+    /// Repo override.
+    repo: Option<String>,
+}
+
+pub fn run_issue(client: &Client, args: IssueArgs) -> Result<()> {
+    if !args.file.is_file() {
+        bail!(
+            "hive-forge attach-issue: file not found: {}",
+            args.file.display()
+        );
+    }
+    let repo = client.repo(args.repo.as_deref());
+    let resp = client.post_multipart_file(
+        &format!("/repos/{repo}/issues/{}/assets", args.number),
+        &args.file,
+    )?;
+    print_url(&resp);
+    Ok(())
+}
+
+pub fn run_comment(client: &Client, args: CommentArgs) -> Result<()> {
+    if !args.file.is_file() {
+        bail!(
+            "hive-forge attach-comment: file not found: {}",
+            args.file.display()
+        );
+    }
+    let repo = client.repo(args.repo.as_deref());
+    let resp = client.post_multipart_file(
+        &format!("/repos/{repo}/issues/comments/{}/assets", args.id),
+        &args.file,
+    )?;
+    print_url(&resp);
+    Ok(())
+}
+
+fn print_url(v: &Value) {
+    if let Some(url) = v.get("browser_download_url").and_then(Value::as_str) {
+        println!("{url}");
+    }
+}