#!/usr/bin/env python3
"""
Use case: CLI startup and clean exit.

Starts the Adolf CLI, reads its welcome banner, then closes it by sending
EOF (simulating Ctrl+D). Prints a structured transcript for the Claude Code
agent to evaluate.

Expected:
  - Banner line contains "Adolf CLI"
  - Prompt "> " appears
  - Process exits with code 0 after EOF
"""

import os
import subprocess
import sys
import time

CLI = os.path.join(os.path.dirname(__file__), "../../cli.py")

proc = subprocess.Popen(
    [sys.executable, CLI, "--session", "use-case-cli-startup"],
    stdin=subprocess.PIPE,
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE,
    text=True,
)

# Give the process time to print its banner before closing stdin
time.sleep(0.3)

try:
    stdout, stderr = proc.communicate(input="", timeout=10)
except subprocess.TimeoutExpired:
    proc.kill()
    stdout, stderr = proc.communicate()
    print("RESULT: TIMEOUT — process did not exit within 10s after EOF")
    sys.exit(1)

print("=== stdout ===")
print(stdout)
if stderr.strip():
    print("=== stderr ===")
    print(stderr)
print(f"=== exit code: {proc.returncode} ===")