#!/usr/bin/env bash
# Facts that come from jars rather than from running the scenarios:
#   12  what Spring Modulith's @ApplicationModuleListener is made of (read with javap)
#   13  what DataSourceTransactionManager does when a transaction is cleaned up (read with javap)
set -euo pipefail
cd "$(dirname "$0")/.."
mkdir -p output target/facts
M2=~/.m2/repository
MODULITH=2.1.1   # newest GA in maven-metadata.xml at the time of writing; 2.2.0-M1 is a milestone

fetch() { # url, destination: Maven Central rate-limits shared addresses, so retry politely
  for i in 1 2 3 4 5 6; do
    code=$(curl -s -o "$2" -w '%{http_code}' "$1" || true)
    [ "$code" = 200 ] && return 0
    sleep $((i * 10))
  done
  echo "could not fetch $1 (last status $code)" >&2; return 1
}

JAR=target/facts/spring-modulith-events-api-$MODULITH.jar
[ -s "$JAR" ] || fetch "https://repo1.maven.org/maven2/org/springframework/modulith/spring-modulith-events-api/$MODULITH/spring-modulith-events-api-$MODULITH.jar" "$JAR"
SPRING=7.0.9
CP="$JAR"
for a in spring-core spring-context spring-tx spring-aop spring-beans; do
  CP="$CP:$(find "$M2/org/springframework/$a/$SPRING" -name "$a-$SPRING.jar" | head -1)"
done
{
  echo "# spring-modulith-events-api $MODULITH: the annotations that @ApplicationModuleListener carries (reflection)"
  echo
  java -cp "$CP" scripts/facts/PrintAnnotations.java org.springframework.modulith.events.ApplicationModuleListener 2>/dev/null \
    | grep -E 'Async|Transactional'
} > output/12-modulith-application-module-listener.txt
cat output/12-modulith-application-module-listener.txt

SPRINGJDBC=$(find "$M2/org/springframework/spring-jdbc/7.0.9" -name 'spring-jdbc-7.0.9.jar' | head -1)
rm -rf target/facts/jdbc && mkdir -p target/facts/jdbc
unzip -o -q "$SPRINGJDBC" 'org/springframework/jdbc/datasource/DataSourceTransactionManager.class' -d target/facts/jdbc
{
  echo "# DataSourceTransactionManager.doCleanupAfterCompletion in spring-jdbc 7.0.9: the calls it makes (javap -c)"
  echo
  javap -c -p -cp target/facts/jdbc org.springframework.jdbc.datasource.DataSourceTransactionManager \
    | awk '/void doCleanupAfterCompletion/,/resetConnectionAfterTransaction/' | grep -E 'invoke' | sed -E 's/^.*\/\/ (Interface)?Method //'
} > output/13-transaction-cleanup-calls.txt
cat output/13-transaction-cleanup-calls.txt