#!/bin/bash

function cmd_ti_safe_point()
{
	local ti_file="${1}"
	local ti_args="${2}"
	local cmd_mod_names="${3}"
	local cmd_hosts="${4}"
	local cmd_indexes="${5}"
	local mods="${6}"

	shift 6

	local format='ts'
	if [ ! -z "${1+x}" ]; then
		local format="${1}"
	fi
	if [ "${format}" != 'ts' ] && [ "${format}" != 'time' ]; then
		echo "[cmd safe_point] arg 'format' should be 'ts' or 'time'"
		return 1
	fi

	local index=`from_mods_random_mod "${mods}" 'tidb'`
	if [ -z "${index}" ]; then
		echo "[cmd safe_point] no tidb selected"
		return 1
	fi

	local read_res=`"${integrated}/ops/ti.sh" -h "${cmd_hosts}" -m 'tidb' -i "${index}" \
		-k "${ti_args}" "${ti_file}" 'mysql' \
		"select VARIABLE_VALUE from tidb where VARIABLE_NAME='tikv_gc_safe_point'" \
		'mysql' 'false' 2>&1`
	local res=`echo "${read_res}" | grep -v 'VARIABLE_VALUE' | trim_host`

	if [ -z "${res}" ]; then
		echo "[cmd safe_point] read from tidb failed: ${read_res}"
		return 1
	fi

	if [ "${format}" != 'time' ]; then
		local res_tz=${res:18}
		local local_tz=`date +%z`
		if [ "${res_tz}" != "${local_tz}" ]; then
			echo "[cmd safe_point] local timezone not equal to tidb timezone: ${res_tz} != ${local_tz}"
			return 1
		fi
		local res="${res:0:17}"
		local res="${res:0:4}-${res:4:2}-${res:6:2} ${res:9}"
		local res=`to_ts "${res}"`
	fi

	echo "${res}"
}

source "`cd $(dirname ${BASH_SOURCE[0]}) && pwd`/_env.sh"
auto_error_handle
cmd_ti_safe_point "${@}"