#!/bin/bash

set -eu

CUR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
source $CUR/../_utils/test_prepare
WORK_DIR=$OUT_DIR/$TEST_NAME
CDC_BINARY=cdc.test
SINK_TYPE=$1

function split_and_random_merge() {
	pd_addr=$1
	scale=$2
	echo "split_and_random_merge scale: $scale"
	run_sql "SPLIT TABLE region_merge.t1 BETWEEN (-9223372036854775808) AND (9223372036854775807) REGIONS $scale;" ${UP_TIDB_HOST} ${UP_TIDB_PORT} || true
	run_sql "SELECT count(distinct region_id) from information_schema.tikv_region_status where db_name = 'region_merge' and table_name = 't1';" &&
		cat $OUT_DIR/sql_res.region_merge.txt
	run_sql "insert into region_merge.t1 values (-9223372036854775808),(0),(1),(9223372036854775807);" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
	run_sql "delete from region_merge.t1;" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
	# sleep 5s to wait some region merge
	sleep 5
}

large_scale=(100 200 400 800 1600 3200 6400 12800 25600 51200)
small_scale=(20 40 80)
# in CI, we use the small data set
test_scale=("${small_scale[@]}")

function run() {
	rm -rf $WORK_DIR && mkdir -p $WORK_DIR

	start_tidb_cluster --workdir $WORK_DIR --multiple-upstream-pd true --pd-config $CUR/conf/pd_config.toml

	cd $WORK_DIR

	pd_addr="http://$UP_PD_HOST_1:$UP_PD_PORT_1"
	run_cdc_server --workdir $WORK_DIR --binary $CDC_BINARY
	TOPIC_NAME="ticdc-region-merge-test-$RANDOM"
	case $SINK_TYPE in
	kafka) SINK_URI="kafka://127.0.0.1:9092/$TOPIC_NAME?protocol=open-protocol&partition-num=4&kafka-version=${KAFKA_VERSION}&max-message-bytes=10485760" ;;
	storage) SINK_URI="file://$WORK_DIR/storage_test/$TOPIC_NAME?protocol=canal-json&enable-tidb-extension=true" ;;
	pulsar)
		run_pulsar_cluster $WORK_DIR mtls
		SINK_URI="pulsar+ssl://127.0.0.1:6651/$TOPIC_NAME?protocol=canal-json&enable-tidb-extension=true"
		;;
	*) SINK_URI="mysql://normal:123456@127.0.0.1:3306/" ;;
	esac
	if [ "$SINK_TYPE" == "pulsar" ]; then
		cat <<EOF >>$WORK_DIR/pulsar_test.toml
        [sink.pulsar-config]
        tls-trust-certs-file-path="${WORK_DIR}/ca.cert.pem"
        auth-tls-private-key-path="${WORK_DIR}/broker_client.key-pk8.pem"
        auth-tls-certificate-path="${WORK_DIR}/broker_client.cert.pem"
EOF
		cdc cli changefeed create --sink-uri="$SINK_URI" --config=$WORK_DIR/pulsar_test.toml
	else
		cdc cli changefeed create --sink-uri="$SINK_URI"
	fi
	case $SINK_TYPE in
	kafka) run_kafka_consumer $WORK_DIR "kafka://127.0.0.1:9092/$TOPIC_NAME?protocol=open-protocol&partition-num=4&version=${KAFKA_VERSION}&max-message-bytes=10485760" ;;
	storage) run_storage_consumer $WORK_DIR $SINK_URI "" "" ;;
	pulsar) run_pulsar_consumer --upstream-uri $SINK_URI --ca "${WORK_DIR}/ca.cert.pem" --auth-tls-private-key-path "${WORK_DIR}/broker_client.key-pk8.pem" --auth-tls-certificate-path="${WORK_DIR}/broker_client.cert.pem" ;;
	esac

	# set max_execution_time to 30s, because split region could block even region has been split.
	run_sql "SET @@global.MAX_EXECUTION_TIME = 30000;" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
	run_sql "CREATE DATABASE region_merge;" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
	run_sql "CREATE TABLE region_merge.t1 (id bigint primary key);" ${UP_TIDB_HOST} ${UP_TIDB_PORT}

	for scale in "${test_scale[@]}"; do
		split_and_random_merge $pd_addr $scale
	done

	run_sql "insert into region_merge.t1 values (-9223372036854775808),(0),(1),(9223372036854775807);" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
	check_table_exists region_merge.t1 ${DOWN_TIDB_HOST} ${DOWN_TIDB_PORT}
	check_sync_diff $WORK_DIR $CUR/conf/diff_config.toml

	cleanup_process $CDC_BINARY
}

trap stop_tidb_cluster EXIT
run $*
check_logs $WORK_DIR
echo "[$(date)] <<<<<< run test case $TEST_NAME success! >>>>>>"