#!/usr/bin/env bash
# main HEAD vs 마지막 성공 PC 빌드(build-info) 비교 → source-state.json (API·UI용)
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
WORK_TREE="${WORK_TREE:-$ROOT}"
RELEASE_DIR="${GC_DESKTOP_APP_RELEASE_DIR:-$WORK_TREE/data/desktop-releases}"
BUILD_INFO="$RELEASE_DIR/build-info.json"
OUT="$RELEASE_DIR/source-state.json"

mkdir -p "$RELEASE_DIR"

HEAD_SHA="$(git -C "$WORK_TREE" rev-parse HEAD 2>/dev/null || echo '')"
HEAD_SHORT="$(git -C "$WORK_TREE" rev-parse --short HEAD 2>/dev/null || echo '')"

LAST_SHA=""
PUBLISHED_VER=""
if [[ -f "$BUILD_INFO" ]]; then
  read -r LAST_SHA PUBLISHED_VER < <(node -e "
const fs=require('fs');
try {
  const j=JSON.parse(fs.readFileSync(process.argv[1],'utf8'));
  console.log((j.gitSha||'')+' '+(j.version||''));
} catch { console.log(' '); }
" "$BUILD_INFO")
fi

PENDING=0
AFFECTS=0
if [[ -n "$HEAD_SHA" && -n "$LAST_SHA" && "$HEAD_SHA" != "$LAST_SHA" ]]; then
  PENDING="$(git -C "$WORK_TREE" rev-list --count "${LAST_SHA}..${HEAD_SHA}" 2>/dev/null || echo 0)"
  # shellcheck disable=SC1091
  source "$ROOT/scripts/desktop-version-scope.sh"
  if desktop_version_diff_affects_app "${LAST_SHA}..${HEAD_SHA}"; then
    AFFECTS=1
  fi
elif [[ -n "$HEAD_SHA" && -z "$LAST_SHA" ]]; then
  PENDING=1
  AFFECTS=1
fi

node -e "
const fs=require('fs');
const out=process.argv[1];
const data={
  headSha: process.argv[2]||'',
  headShort: process.argv[3]||'',
  lastBuiltSha: process.argv[4]||'',
  publishedVersion: process.argv[5]||'',
  pendingCommitCount: parseInt(process.argv[6],10)||0,
  affectsDesktop: process.argv[7]==='1',
  updatedAt: new Date().toISOString(),
};
fs.writeFileSync(out, JSON.stringify(data,null,2)+'\n');
console.log('[source-state]', data.headShort||'?','pending',data.pendingCommitCount,'affects',data.affectsDesktop);
" "$OUT" "$HEAD_SHA" "$HEAD_SHORT" "$LAST_SHA" "$PUBLISHED_VER" "$PENDING" "$AFFECTS"