#!/usr/bin/env bash
# 将 V1 运行包 cw_lib 中的电梯四模块 jar 用 CFR 反编译到本仓库 tools/v1-decompiled/ 下，
# 供与 maven-cw-elevator-application 源码逐类比对（不依赖历史 artifacts 手工目录）。
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
MV_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
REPO_ROOT="$(cd "$MV_ROOT/.." && pwd)"

# V1 解压目录（含 cw_lib）
: "${V1_RUN_DIR:=${REPO_ROOT}/cw-elevator-application-V1.0.0.20211103}"
CW_LIB="${V1_RUN_DIR}/cw_lib"

# CFR：优先环境变量，其次仓库 artifacts
: "${CFR_JAR:=${REPO_ROOT}/artifacts/decompiled/v1-cfr-compare-20211103/cfr-0.152.jar}"
if [[ ! -f "$CFR_JAR" ]]; then
  echo "ERROR: CFR not found: $CFR_JAR" >&2
  echo "Set CFR_JAR to a local cfr-*.jar path." >&2
  exit 1
fi

# 输出根目录（可用环境变量覆盖）
: "${V1_DECOMP_OUT:=${MV_ROOT}/tools/v1-decompiled/cfr-from-cw-lib}"
TIMESTAMP="$(date +%Y%m%d-%H%M%S)"
OUT="${V1_DECOMP_OUT}-${TIMESTAMP}"
FINAL_LINK="${MV_ROOT}/tools/v1-decompiled/cfr-from-cw-lib-current"

MODULES=(
  "cw-elevator-application-common-1.0-SNAPSHOT.jar"
  "cw-elevator-application-data-1.0-SNAPSHOT.jar"
  "cw-elevator-application-service-1.0-SNAPSHOT.jar"
  "cw-elevator-application-web-1.0-SNAPSHOT.jar"
)

echo "V1 cw_lib: $CW_LIB"
echo "CFR:       $CFR_JAR"
echo "Output:    $OUT"
mkdir -p "$OUT"

for j in "${MODULES[@]}"; do
  jar_path="${CW_LIB}/${j}"
  if [[ ! -f "$jar_path" ]]; then
    echo "WARNING: missing $jar_path — skip"
    continue
  fi
  mod="${j%.jar}"
  dest="${OUT}/${mod}"
  mkdir -p "$dest"
  echo ">>> Decompiling $j -> $dest"
  java -jar "$CFR_JAR" "$jar_path" \
    --outputdir "$dest" \
    --silent true
done

# 可选：V1 fat jar（体积大，默认关闭）
if [[ "${DECOMPILE_V1_FAT_JAR:-0}" == "1" ]]; then
  FAT="${V1_RUN_DIR}/cw-elevator-application-V1.0.0.20211103.jar"
  if [[ -f "$FAT" ]]; then
    echo ">>> Decompiling fat jar (may take several minutes)..."
    java -jar "$CFR_JAR" "$FAT" \
      --outputdir "${OUT}/cw-elevator-application-V1.0.0.20211103-fat" \
      --silent true
  else
    echo "WARNING: fat jar not found: $FAT"
  fi
fi

# 写元数据
{
  echo "generated_utc: $(date -u +%Y-%m-%dT%H:%M:%SZ)"
  echo "v1_run_dir: $V1_RUN_DIR"
  echo "cfr_jar: $CFR_JAR"
  echo "modules:"
  for j in "${MODULES[@]}"; do echo "  - $j"; done
} > "${OUT}/MANIFEST.txt"

ln -sfn "$OUT" "$FINAL_LINK"
echo ""
echo "Done. Latest symlink: $FINAL_LINK -> $OUT"
echo "Manifest: ${OUT}/MANIFEST.txt"