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

hive-forge/src/verbs/issue_edit.rs

@@ -0,0 +1,87 @@
+//! `issue-edit <number> [--title <t>] [body sources] [--state s]
+//! [--milestone id] [repo]` — partial update of an issue. Fields not
+//! provided are left unchanged.
+
+use anyhow::Result;
+use clap::{Args as ClapArgs, ValueEnum};
+use serde_json::{Map, Value, json};
+
+use crate::body;
+use crate::client::Client;
+use crate::verbs::print_json;
+
+#[derive(Copy, Clone, ValueEnum)]
+pub enum StateArg {
+    Open,
+    Closed,
+}
+
+impl StateArg {
+    fn as_str(self) -> &'static str {
+        match self {
+            Self::Open => "open",
+            Self::Closed => "closed",
+        }
+    }
+}
+
+#[derive(ClapArgs)]
+pub struct Args {
+    /// Issue number.
+    number: u64,
+    /// New title (omit to leave unchanged).
+    #[arg(long)]
+    title: Option<String>,
+    /// Inline body text (omit to leave unchanged).
+    #[arg(long, conflicts_with = "body_file")]
+    body: Option<String>,
+    /// Read body from a file. `-` means stdin.
+    #[arg(long = "body-file")]
+    body_file: Option<String>,
+    /// New state.
+    #[arg(long, value_enum)]
+    state: Option<StateArg>,
+    /// Milestone id (0 to unset).
+    #[arg(long)]
+    milestone: Option<u64>,
+    /// Repo override.
+    repo: Option<String>,
+}
+
+pub fn run(client: &Client, args: Args) -> Result<()> {
+    // Body is partial: only update the body field if a source was
+    // actually given. Piped stdin without --body/--body-file leaves
+    // body alone (the partial-update contract).
+    let body_explicit = args.body.is_some() || args.body_file.is_some();
+    let body = if body_explicit {
+        body::resolve(args.body.as_deref(), args.body_file.as_deref())?
+    } else {
+        None
+    };
+
+    let mut payload = Map::new();
+    if let Some(t) = args.title {
+        payload.insert("title".into(), Value::String(t));
+    }
+    if let Some(b) = body {
+        payload.insert("body".into(), Value::String(b));
+    }
+    if let Some(s) = args.state {
+        payload.insert("state".into(), Value::String(s.as_str().to_owned()));
+    }
+    if let Some(m) = args.milestone {
+        payload.insert("milestone".into(), Value::Number(m.into()));
+    }
+
+    let repo = client.repo(args.repo.as_deref());
+    let resp = client.patch_json(
+        &format!("/repos/{repo}/issues/{}", args.number),
+        &Value::Object(payload),
+    )?;
+    print_json(&json!({
+        "number": resp.get("number"),
+        "title": resp.get("title"),
+        "state": resp.get("state"),
+        "milestone": resp.get("milestone").and_then(|m| m.get("title")),
+    }))
+}