#!/bin/bash
#
# Copyright (C) - 2020 EfficiOS, inc
#
# This library is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; version 2.1 of the License.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA

# Test the `lttng remove-trigger` command line interface.

CURDIR="$(dirname "$0")"
TESTDIR="$CURDIR/../../.."

# shellcheck source=../../../utils/utils.sh
source "$TESTDIR/utils/utils.sh"

plan_tests 17

FULL_LTTNG_BIN="${TESTDIR}/../src/bin/lttng/${LTTNG_BIN}"

tmp_stdout=$(mktemp -t test_list_triggers_cli_stdout.XXXXXX)
tmp_stderr=$(mktemp -t test_list_triggers_cli_stderr.XXXXXX)
tmp_expected_stdout=$(mktemp -t test_list_triggers_cli_expected_stdout.XXXXXX)

uid=$(id --user)
gid=$(id --group)

function list_triggers ()
{
	local test_name="$1"
	local expected_stdout_file="$2"

	"${FULL_LTTNG_BIN}" list-triggers > "${tmp_stdout}" 2> "${tmp_stderr}"
	ok $? "${test_name}: exit code is 0"

	diff -u "${expected_stdout_file}" "${tmp_stdout}"
	ok $? "${test_name}: expected stdout"

	diff -u /dev/null "${tmp_stderr}"
	ok $? "${test_name}: expected stderr"
}

function remove_trigger ()
{
	local name="$1"
	local test_name="remove trigger ${name}"

	"${FULL_LTTNG_BIN}" remove-trigger "${name}" > "${tmp_stdout}" 2> "${tmp_stderr}"
	ok $? "${test_name}: exit code is 0"

	diff -u <(echo "Removed trigger \`${name}\`.") "${tmp_stdout}"
	ok $? "${test_name}: expected stdout"

	diff -u /dev/null "${tmp_stderr}"
	ok $? "${test_name}: expected stderr"
}

# shellcheck disable=SC2119
start_lttng_sessiond_notap

# Add a few triggers
lttng_add_trigger_ok "ABC" --condition event-rule-matches --name=aaa --domain=user --filter 'p == 2' --action notify
lttng_add_trigger_ok "DEF" --condition event-rule-matches --domain=user --action notify

cat > "${tmp_expected_stdout}" <<- EOF
- name: ABC
  owner uid: ${uid}
  condition: event rule hit
    rule: aaa (type: tracepoint, domain: ust, filter: p == 2)
  actions:
    notify
      errors: none
  errors: none
- name: DEF
  owner uid: ${uid}
  condition: event rule hit
    rule: * (type: tracepoint, domain: ust)
  actions:
    notify
      errors: none
  errors: none
EOF
list_triggers "two triggers left" "${tmp_expected_stdout}"

remove_trigger "ABC"

cat > "${tmp_expected_stdout}" <<- EOF
- name: DEF
  owner uid: ${uid}
  condition: event rule hit
    rule: * (type: tracepoint, domain: ust)
  actions:
    notify
      errors: none
  errors: none
EOF
list_triggers "one trigger left" "${tmp_expected_stdout}"

remove_trigger "DEF"

list_triggers "no triggers left" "/dev/null"

# Cleanup
stop_lttng_sessiond_notap
rm -f "${tmp_stdout}"
rm -f "${tmp_stderr}"
rm -f "${tmp_expected_stdout}"