#!/usr/bin/env bash
# ─────────────────────────────────────────────────────────────────────────────
# Isolated LIVE smoke of the CLAUDE backend, driven entirely through the harness.
#
# Brings a throwaway scratch project (its OWN session_prefix "aotest-c-<pid>-" and a temporary
# log_dir) up through `agents.py up`, on the real `claude` CLI:
#   • the harness builds the claude launch command (arg delivery + remote-control + model flag),
#   • the agent attaches in tmux (claude TUI alive, not an instant crash),
#   • `agents.py status` reports it RUNNING,
#   • `agents.py down` tears it down cleanly — no leftover sessions.
#
# SAFE BY CONSTRUCTION — never touches the live cc-ci-* sessions:
#   • a unique per-run session prefix (NOT "cc-ci-")
#   • cleans up everything it creates on exit (even on Ctrl+C / error).
#
# Usage:  bash tests/smoke_claude.sh
# Env:    CLAUDE_BIN (default: `claude` on PATH, else ~/.local/bin/claude)
#         AOTEST_MODEL (default: claude-haiku-4-5 — a cheap model for the trivial probe)
# Exit:   0 = PASS or SKIP (claude unavailable); 1 = FAIL.
# ─────────────────────────────────────────────────────────────────────────────
set -uo pipefail

HERE="$(cd "$(dirname "$0")" && pwd)"
REPO="$(cd "$HERE/.." && pwd)"
CLAUDE_BIN="${CLAUDE_BIN:-$(command -v claude 2>/dev/null || echo "$HOME/.local/bin/claude")}"
MODEL="${AOTEST_MODEL:-claude-haiku-4-5}"
PREFIX="aotest-c-$$-"
SANDBOX="$(mktemp -d)"
CFG="$SANDBOX/agents.toml"
FAILED=0

pass(){ echo "  PASS: $*"; }
fail(){ echo "  FAIL: $*"; FAILED=1; }

cleanup(){
  local rc=$?
  python3 "$REPO/agents.py" --config "$CFG" down probe >/dev/null 2>&1 || true
  if command -v tmux >/dev/null 2>&1; then
    tmux ls 2>/dev/null | sed 's/:.*//' | grep "^${PREFIX}" | while read -r s; do
      tmux kill-session -t "=$s" 2>/dev/null || true
    done || true
  fi
  rm -rf "$SANDBOX"
  exit "$rc"
}
trap cleanup EXIT INT TERM

echo "=== claude backend smoke (isolated: prefix=${PREFIX}) ==="

# 0 — preconditions (SKIP, not FAIL, when claude/tmux can't run here)
command -v tmux >/dev/null 2>&1 || { echo "SKIP: tmux not on PATH (run inside 'nix develop')"; exit 0; }
[ -x "$CLAUDE_BIN" ] || command -v "$CLAUDE_BIN" >/dev/null 2>&1 \
  || { echo "SKIP: claude binary not found ($CLAUDE_BIN)"; exit 0; }

# 1 — isolated sandbox config (unique prefix + temp log_dir; one trivial persistent probe)
cat > "$CFG" <<EOF
[defaults]
project_dir    = "$REPO"
session_prefix = "$PREFIX"
log_dir        = "$SANDBOX/state"
backend        = "claude"
model          = "$MODEL"
watch          = "none"

[backend.claude]
bin             = "$CLAUDE_BIN"
flags           = "--dangerously-skip-permissions"
remote_control  = true
supports_resume = true
prompt_delivery = "arg"
process_name    = "claude"
submit_key      = "Enter"
stall_idle      = 300
active_re = "esc to interrupt|Running tool|bypass permissions"
limit_re  = "usage limit|limit reached"

[[agent]]
name   = "probe"
kind   = "persistent"
prompt = "You are a harness self-test. Reply with the single word READY and then wait silently. Do nothing else."
EOF

# 2 — bring the probe up THROUGH the harness
if ! python3 "$REPO/agents.py" --config "$CFG" up probe; then
  fail "agents.py up probe errored"; echo "=== RESULT: FAIL ==="; exit 1
fi

# 3 — session created?
sleep 6
if tmux has-session -t "=${PREFIX}probe" 2>/dev/null; then
  cmd=$(tmux display-message -p -t "=${PREFIX}probe:" '#{pane_current_command}' 2>/dev/null)
  pass "session ${PREFIX}probe created via agents.py (pane command: ${cmd})"
else
  fail "${PREFIX}probe session was not created"; echo "=== RESULT: FAIL ==="; exit 1
fi

# 4 — claude actually attached (TUI alive), not an instant crash
sleep 6
cmd=$(tmux display-message -p -t "=${PREFIX}probe:" '#{pane_current_command}' 2>/dev/null)
pane=$(tmux capture-pane -p -t "=${PREFIX}probe:" 2>/dev/null)
if [ "$cmd" = "claude" ] || echo "$pane" | grep -qiE "esc to interrupt|bypass permissions|READY|claude|❯|welcome"; then
  pass "claude TUI attached + alive (driven entirely by agents.py)"
else
  fail "no claude TUI in pane (cmd=${cmd}); tail: $(echo "$pane" | grep -vE '^\s*$' | tail -3)"
fi

# 5 — status reports it RUNNING
if python3 "$REPO/agents.py" --config "$CFG" status | grep -E '^\s*probe\b' | grep -q RUNNING; then
  pass "agents.py status reports probe RUNNING"
else
  fail "agents.py status did not report probe RUNNING"
fi

# 6 — lifecycle: down removes it cleanly
python3 "$REPO/agents.py" --config "$CFG" down probe >/dev/null 2>&1
sleep 2
if tmux has-session -t "=${PREFIX}probe" 2>/dev/null; then
  fail "${PREFIX}probe still alive after agents.py down"
else
  pass "agents.py down cleanly removed the session"
fi

if [ "$FAILED" = 0 ]; then echo "=== CLAUDE BACKEND SMOKE: PASS ==="; exit 0
else echo "=== CLAUDE BACKEND SMOKE: FAIL ==="; exit 1; fi