#!/usr/bin/env bash
# Render Report/puml/fig_*.puml → Report/images/fig_*.png (имя PNG = @startuml в файле).
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPORT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
PUML_DIR="$REPORT_DIR/puml"
IMG_DIR="$REPORT_DIR/images"

mkdir -p "$IMG_DIR"

if [[ -z "${JAVA_HOME:-}" ]]; then
  for j in /usr/lib/jvm/java-21-openjdk /usr/lib/jvm/java-17-openjdk; do
    if [[ -x "$j/bin/java" ]]; then
      export JAVA_HOME="$j"
      break
    fi
  done
fi
export PATH="${JAVA_HOME:+$JAVA_HOME/bin:}$PATH"

JAR="${PLANTUML_JAR:-/usr/share/java/plantuml/plantuml.jar}"
JAVA_BIN="${JAVA_HOME:+$JAVA_HOME/bin/}java"
if [[ ! -f "$JAR" ]]; then
  echo "plantuml.jar not found at $JAR" >&2
  exit 1
fi

shopt -s nullglob
PUML_FILES=("$PUML_DIR"/fig_*.puml)
if ((${#PUML_FILES[@]} == 0)); then
  echo "No fig_*.puml in $PUML_DIR" >&2
  exit 1
fi

export PLANTUML_LIMIT_SIZE=8192
"$JAVA_BIN" -Djava.awt.headless=true -jar "$JAR" \
  -charset UTF-8 -tpng -o "$IMG_DIR" "${PUML_FILES[@]}"

echo "Done. $(ls -1 "$IMG_DIR"/fig_*.png 2>/dev/null | wc -l) PNG in images/"