//! `HIVE_FORGE_URL` has no default: unset or empty is a clear error naming
//! the variable, and a set value is the URL the client dials.

use std::process::{Command, Output};

const UNSET_MSG: &str = "HIVE_FORGE_URL is unset or empty";

fn scratch_state_dir(tag: &str) -> std::path::PathBuf {
    let ts = std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .map_or(0, |d| d.as_nanos());
    let dir = std::env::temp_dir().join(format!("hive-forge-url-required-{tag}-{ts}"));
    std::fs::create_dir_all(&dir).expect("create scratch state dir");
    std::fs::write(dir.join("forge-token"), "test-token\n").expect("seed forge-token");
    dir
}

fn run(tag: &str, url: Option<&str>) -> Output {
    let mut cmd = Command::new(env!("CARGO_BIN_EXE_hive-forge"));
    cmd.args(["-r", "o/r", "pr", "edit", "7", "--title", "t"])
        .env("HYPERHIVE_STATE_DIR", scratch_state_dir(tag))
        .env_remove("HIVE_FORGE_TOKEN_FILE")
        .env_remove("HIVE_LABEL");
    match url {
        Some(u) => cmd.env("HIVE_FORGE_URL", u),
        None => cmd.env_remove("HIVE_FORGE_URL"),
    };
    cmd.output().expect("run hive-forge")
}

#[test]
fn unset_url_is_a_clear_error() {
    let out = run("unset", None);
    let stderr = String::from_utf8_lossy(&out.stderr);
    assert!(!out.status.success());
    assert!(stderr.contains(UNSET_MSG), "stderr: {stderr}");
    assert!(!stderr.contains("localhost"), "stderr: {stderr}");
}

#[test]
fn empty_url_is_a_clear_error() {
    let out = run("empty", Some(""));
    let stderr = String::from_utf8_lossy(&out.stderr);
    assert!(!out.status.success());
    assert!(stderr.contains(UNSET_MSG), "stderr: {stderr}");
}

/// Presence control: a set value passes the URL check and the client dials it
/// (nothing listens on port 1, so the failure is a connection error).
#[test]
fn set_url_is_used_as_is() {
    let out = run("set", Some("http://127.0.0.1:1"));
    let stderr = String::from_utf8_lossy(&out.stderr);
    assert!(!out.status.success());
    assert!(!stderr.contains(UNSET_MSG), "stderr: {stderr}");
    assert!(stderr.contains("127.0.0.1"), "stderr: {stderr}");
}