#!/bin/bash
# Verify an NNTP server is running and can list/post/read
# Usage: scripts/verify-nntp.sh [host] [port]
HOST="${1:-localhost}"
PORT="${2:-119}"

echo "=== NNTP Server Verification ==="
echo "Target: $HOST:$PORT"
echo

# 1. Check port is open
echo "--- Step 1: Port open? ---"
ss -tlnp 2>/dev/null | grep -qE ":${PORT}\s" && echo "PASS: Port $PORT is listening" || { echo "FAIL: Port $PORT not listening"; exit 1; }

# 2. Connect and get greeting
echo "--- Step 2: Server greeting ---"
GREETING=$(echo -e "QUIT\r\n" | timeout 5 nc -w 3 "$HOST" "$PORT" 2>&1)
echo "$GREETING" | head -1

if echo "$GREETING" | head -1 | grep -q "200 "; then
  echo "PASS: Got valid NNTP greeting"
else
  echo "FAIL: No NNTP greeting received"
  exit 1
fi

# 3. List newsgroups
echo "--- Step 3: LIST newsgroups ---"
GROUPS=$(echo -e "MODE READER\r\nLIST\r\nQUIT\r\n" | timeout 5 nc -w 3 "$HOST" "$PORT" 2>&1)
if echo "$GROUPS" | grep -q "215 "; then
  echo "PASS: LIST command works"
  echo "Groups:"
  echo "$GROUPS" | grep -v "^200\|^215\|^\.\|^205"
else
  echo "FAIL: LIST command failed"
  exit 1
fi

# 4. Post a test article
echo "--- Step 4: POST test article ---"
POST_RESULT=$(echo -e 'POST\r\nFrom: verify@test.local\r\nNewsgroups: local.test\r\nSubject: NNTP Docker verification\r\n\r\nVerification article from automated test.\r\n.\r\nQUIT\r\n' | timeout 5 nc -w 3 "$HOST" "$PORT" 2>&1)
if echo "$POST_RESULT" | grep -q "240 "; then
  echo "PASS: Article posted successfully"
else
  echo "FAIL: Posting failed"
  echo "$POST_RESULT"
  exit 1
fi

# 5. Read it back
echo "--- Step 5: Read test article ---"
READ_RESULT=$(echo -e "GROUP local.test\r\nARTICLE 1\r\nQUIT\r\n" | timeout 5 nc -w 3 "$HOST" "$PORT" 2>&1)
if echo "$READ_RESULT" | grep -q "220 "; then
  SUBJECT=$(echo "$READ_RESULT" | grep "^Subject: ")
  echo "PASS: Article readable — $SUBJECT"
else
  echo "FAIL: Reading article failed"
  exit 1
fi

echo
echo "=== All checks PASSED ==="