#!/bin/sh
# activity CLI — review this script before piping to a shell:
#   curl -fsSL http://activity.apprunner.win/install.sh
set -eu

BASE="http://activity.apprunner.win"
SHA256="d222ffd66c82fc6e29e2332a43f994981ffedba65f92b00708dc3b61192e5247"
PREFIX="${ACTIVITY_PREFIX:-$HOME/.local}"
SHARE="$PREFIX/share/agent-activity"
BIN="$PREFIX/bin"

if [ "$(id -u)" -eq 0 ]; then
  echo "Don't install as root. The CLI lives in $PREFIX." >&2
  exit 1
fi

if ! command -v python3 >/dev/null 2>&1; then
  echo "python3 is required (3.12+)." >&2
  exit 1
fi
if ! python3 -c 'import sys; raise SystemExit(0 if sys.version_info >= (3, 12) else 1)'; then
  echo "Python 3.12+ is required. macOS: brew install python@3.12" >&2
  exit 1
fi

if command -v curl >/dev/null 2>&1; then
  fetch() { curl -fsSL "$1" -o "$2"; }
elif command -v wget >/dev/null 2>&1; then
  fetch() { wget -qO "$2" "$1"; }
else
  echo "curl or wget is required." >&2
  exit 1
fi

TMP=$(mktemp -d)
trap 'rm -rf "$TMP"' EXIT

echo "Downloading the activity CLI from $BASE …"
fetch "$BASE/download/cli.tar.gz" "$TMP/cli.tar.gz"

python3 - "$SHA256" "$TMP/cli.tar.gz" <<'PY'
import hashlib
import sys

expected, path = sys.argv[1], sys.argv[2]
digest = hashlib.sha256(open(path, "rb").read()).hexdigest()
if digest != expected:
    sys.stderr.write("checksum mismatch (got %s)\n" % digest)
    sys.exit(1)
PY

mkdir -p "$TMP/unpack"
tar -xzf "$TMP/cli.tar.gz" -C "$TMP/unpack"
SRC="$TMP/unpack/agent-activity-cli"
if [ ! -f "$SRC/agent_activity/cli.py" ] || [ ! -f "$SRC/skills/report-activity/SKILL.md" ]; then
  echo "The downloaded archive is missing the CLI or skills." >&2
  exit 1
fi

rm -rf "$SHARE"
mkdir -p "$SHARE" "$BIN"
cp -R "$SRC/agent_activity" "$SHARE/agent_activity"
cp -R "$SRC/skills" "$SHARE/skills"

# SHARE is expanded now; $@ stays for the wrapper's caller.
cat > "$BIN/activity" <<EOF
#!/bin/sh
SHARE="$SHARE"
export PYTHONPATH="\$SHARE\${PYTHONPATH:+:\$PYTHONPATH}"
exec python3 -m agent_activity "\$@"
EOF
chmod +x "$BIN/activity"
ln -sf activity "$BIN/agent-activity"

echo
echo "Installed  $BIN/activity"
"$BIN/activity" --help >/dev/null

if command -v activity >/dev/null 2>&1; then
  echo "Next:      activity setup --url $BASE"
else
  echo "Add $BIN to PATH, then:"
  echo "  export PATH=\"$BIN:\$PATH\""
  echo "  activity setup --url $BASE"
fi