#!/usr/bin/env bash
# Writes docs/output/14-legacy-1x.txt: what happens to the code in the 1.x version of the article.
# Needs network access to Maven Central. It runs deliberately failing builds, so it never exits non-zero
# because of them. Needs unzip and python3 for the configuration-metadata part.
set -uo pipefail
cd "$(dirname "$0")/.."
mkdir -p docs/output target/legacy
OUT=docs/output/14-legacy-1x.txt
CENTRAL=https://repo1.maven.org/maven2/org/springframework/ai

latest() { curl -s "$CENTRAL/$1/maven-metadata.xml" | grep -o '<latest>[^<]*' | sed 's/.*>//'; }
first_errors() { grep -E 'ERROR.*(is missing|Could not|error:)|error:' | sed 's/^\[ERROR\] *//' | sort -u | head -"${1:-6}"; }

{
  echo "# The 1.x article's code, against 1.1.0 and 2.0.1"
  echo
  echo "## The starter artifact ids in the 1.x article: latest version ever published"
  echo "spring-ai-openai-spring-boot-starter        latest: $(latest spring-ai-openai-spring-boot-starter)"
  echo "spring-ai-pgvector-store-spring-boot-starter latest: $(latest spring-ai-pgvector-store-spring-boot-starter)"
  echo "the ids that replaced them:"
  echo "spring-ai-starter-model-openai              latest: $(latest spring-ai-starter-model-openai)"
  echo "spring-ai-starter-vector-store-pgvector     latest: $(latest spring-ai-starter-vector-store-pgvector)"

  for v in 1.1.0 2.0.1; do
    echo
    echo "## mvn validate on the article's dependency block with spring-ai-bom $v"
    mvn -B -f legacy-1x/pom.xml validate -Dspring-ai.version=$v 2>&1 | first_errors 3
  done

  # Compile the two Spring AI calls against the 1.1.0 jars, then against 2.0.1.
  for m in spring-ai-commons spring-ai-pdf-document-reader; do
    [ -f target/legacy/$m-1.1.0.jar ] || curl -s -o target/legacy/$m-1.1.0.jar "$CENTRAL/$m/1.1.0/$m-1.1.0.jar"
  done
  mvn -B -q dependency:build-classpath -Dmdep.outputFile=target/classpath.txt >/dev/null 2>&1
  OTHERS="$(tr ':' '\n' < target/classpath.txt | grep -v '/spring-ai-' | paste -sd:)"
  CP21="$(cat target/classpath.txt)"
  CP11="target/legacy/spring-ai-commons-1.1.0.jar:target/legacy/spring-ai-pdf-document-reader-1.1.0.jar:$OTHERS"

  for v in 1.1.0 2.0.1; do
    echo
    echo "## javac legacy-1x/src/LegacyIngestion.java against Spring AI $v"
    if [ "$v" = 1.1.0 ]; then CP="$CP11"; else CP="$CP21"; fi
    rm -rf target/legacy/out && mkdir -p target/legacy/out
    if RESULT="$(javac -proc:none -Xmaxerrs 10 -d target/legacy/out -cp "$CP" legacy-1x/src/LegacyIngestion.java 2>&1)"; then
      echo "(compiles)"
    else
      echo "$RESULT" | grep -A2 'error:' | grep -v '^--$'
    fi
  done

  # The three 1.x configuration keys, read from the configuration metadata inside the auto-configuration jar.
  echo
  echo "## the 1.x configuration keys in the metadata of spring-ai-autoconfigure-model-openai"
  for v in 1.1.0 2.0.1; do
    J=target/legacy/spring-ai-autoconfigure-model-openai-$v.jar
    [ -f "$J" ] || curl -s -o "$J" "$CENTRAL/spring-ai-autoconfigure-model-openai/$v/spring-ai-autoconfigure-model-openai-$v.jar"
    unzip -p "$J" META-INF/spring-configuration-metadata.json | python3 -c '
import json, sys
v = sys.argv[1]
props = {p["name"]: p for p in json.load(sys.stdin)["properties"]}
for k in ("spring.ai.openai.chat.options.model", "spring.ai.openai.chat.options.temperature", "spring.ai.openai.embedding.options.model"):
    p = props.get(k)
    state = "unknown" if p is None else ("deprecated, use " + p["deprecation"]["replacement"] if "deprecation" in p else "current")
    print("%-6s %-46s %s" % (v, k, state))
' "$v"
  done
} > "$OUT"
echo "wrote $OUT"