#!/usr/bin/env bats
#
# party knock: ask a party's host for an invite via write(1). The
# unauthorized-party resolution path needs a foreign-owned dir, which a
# single-uid run can't create (roster_read anchors on dir ownership),
# so the send is tested through knock_send with a stubbed write(1) and
# the CLI paths through parties we can fake: our own.

load 'helpers'

setup() {
  setup_party_sandbox
  load_party_lib
}

teardown() { teardown_party_sandbox; }

# Put a stub write(1) on PATH. $1 = exit status. Records its user
# argument and stdin under $PARTY_TMP.
stub_write() {
  mkdir -p "$PARTY_TMP/bin"
  cat > "$PARTY_TMP/bin/write" <<EOF
#!/bin/sh
printf '%s\n' "\$1" > "$PARTY_TMP/write.user"
cat > "$PARTY_TMP/write.msg"
exit $1
EOF
  chmod +x "$PARTY_TMP/bin/write"
  PATH="$PARTY_TMP/bin:$PATH"
}

@test "knock_send pings the host with the exact invite command" {
  stub_write 0
  knock_send alice fiesta
  [ "$(cat "$PARTY_TMP/write.user")" = alice ]
  grep -q "$USER wants to join 'fiesta'" "$PARTY_TMP/write.msg"
  grep -q "party invite $USER --party fiesta" "$PARTY_TMP/write.msg"
}

@test "knock_send propagates write(1) failure" {
  stub_write 1
  run knock_send alice fiesta
  [ "$status" -ne 0 ]
}

@test "knock on an unknown party fails with not-found" {
  run "$PARTY_BIN" knock nowhere
  [ "$status" -eq 1 ]
  [[ "$output" == *"not found"* ]]
}

@test "knock rejects unknown flags and extra args" {
  run "$PARTY_BIN" knock --frob
  [ "$status" -eq 2 ]
  run "$PARTY_BIN" knock a b
  [ "$status" -eq 2 ]
}

@test "knock on your own party is refused" {
  # Live-looking own party via an always-ok tmux stub (rc 0, silent).
  cat > "$PARTY_TMP/tmux-ok" <<'EOF'
#!/bin/sh
exit 0
EOF
  chmod +x "$PARTY_TMP/tmux-ok"
  export PARTY_TMUX="$PARTY_TMP/tmux-ok"
  ensure_party_dir "$USER" mine
  d="$PARTY_SOCKET_DIR/party-$USER:mine.d"
  cat > "$d/roster" <<EOF
HOST_USER=$USER
PARTY_NAME=mine
SOCKET=$d/sock
SERVER_PID=12345
GROUP=$TMUX_PARTY_GROUP
CREATED=2026-07-11T00:00:00Z
EOF
  chmod 0640 "$d/roster"
  run "$PARTY_BIN" knock mine
  [ "$status" -eq 1 ]
  [[ "$output" == *"your own party"* ]]
}