#!/usr/bin/env bash
# Does spring-boot-configuration-processor actually run?
#
# Two builds of the SAME sources with the SAME processor jar, differing only in how the
# processor is declared to the compiler. On JDK 23+ that difference decides whether
# META-INF/spring-configuration-metadata.json exists at all -- and neither build fails.
set -euo pipefail
cd "$(dirname "$0")/.."
source scripts/env.sh

WORK="${TMPDIR:-/tmp}/configprops-metadata-ab"
rm -rf "$WORK"; mkdir -p "$WORK/a" "$WORK/b"

PROC_JAR=$(find ~/.m2/repository/org/springframework/boot/spring-boot-configuration-processor \
             -name 'spring-boot-configuration-processor-*.jar' | sort | tail -1)
CP=$("$MVN" -B -o -q dependency:build-classpath -Dmdep.outputFile=/dev/stdout 2>/dev/null | tail -1)

SOURCES=$(find src/main/java -name '*.java')

{
  echo "== is the annotation processor discovered? =="
  echo
  java -version 2>&1 | clean | head -1
  echo "processor jar: $(basename "$PROC_JAR")"
  echo
  echo "A) processor on the classpath, javac defaults -- what an <optional> dependency gives you"
  echo "\$ javac -cp <deps>:spring-boot-configuration-processor.jar -d a \$SOURCES"
  javac -nowarn -cp "$PROC_JAR:$CP" -d "$WORK/a" $SOURCES 2>&1 | clean | head -3 || true
  echo "   spring-configuration-metadata.json files produced: \
$(find "$WORK/a" -name 'spring-configuration-metadata.json' | wc -l)"
  echo
  echo "B) identical, plus -proc:full"
  echo "\$ javac -proc:full -cp <deps>:spring-boot-configuration-processor.jar -d b \$SOURCES"
  javac -nowarn -proc:full -cp "$PROC_JAR:$CP" -d "$WORK/b" $SOURCES 2>&1 | clean | head -3 || true
  echo "   spring-configuration-metadata.json files produced: \
$(find "$WORK/b" -name 'spring-configuration-metadata.json' | wc -l)"
  echo
  echo "Both compilations succeed. Only one of them has metadata."
  echo
  echo "== what this project's pom does instead =="
  echo "The processor is declared as an <annotationProcessorPath> on maven-compiler-plugin,"
  echo "which puts it on javac's --processor-path where discovery is not disabled:"
  echo
  echo "\$ mvn clean package && ls target/classes/META-INF/"
  ls target/classes/META-INF/ 2>/dev/null || echo "(run mvn package first)"
  echo
  echo "== the generated metadata, first entries =="
  python3 -m json.tool target/classes/META-INF/spring-configuration-metadata.json 2>/dev/null \
    | head -45
} > docs/output/05-metadata-generation.txt 2>&1
cat docs/output/05-metadata-generation.txt