#!/usr/bin/env bash
# Laedt fuer die laufende Plattform die Service-Binaries und legt sie unter
# binaries/<platform>/ ab. Pinning kommt aus binaries/manifest.json.
#
# AKTUELL implementiert:
#   - postgres : echt, via Zonky embedded-postgres-binaries (Maven Central)
#   - alle anderen : Bash-Placeholder (sleep loop) bis ihre Quellen verdrahtet sind
#
# Verzeichnis-Layout fuer Postgres: binaries/<platform>/postgres-bundle/
#   ├── bin/   (postgres, initdb, psql, pg_dumpall, ...)
#   ├── lib/   (libpq + Sprach-Plugins)
#   └── share/ (initdb-Templates etc.)

set -euo pipefail
cd "$(dirname "$0")/.."

uname_s=$(uname -s)
uname_m=$(uname -m)

case "$uname_s-$uname_m" in
  Darwin-arm64)  PLATFORM="macos-aarch64"; PG_TARGET="aarch64-apple-darwin"; PGRST_ASSET="macos-aarch64" ;;
  Darwin-x86_64) PLATFORM="macos-x86_64";  PG_TARGET="x86_64-apple-darwin";  PGRST_ASSET="macos-x86-64" ;;
  Linux-x86_64)  PLATFORM="linux-x86_64";  PG_TARGET="x86_64-unknown-linux-gnu"; PGRST_ASSET="ubuntu-aarch64" ;;
  *) echo "Unsupported platform: $uname_s-$uname_m"; exit 1 ;;
esac

DEST="binaries/$PLATFORM"
mkdir -p "$DEST"

# ---------------------------------------------------------------------------
# Postgres (native binary via theseus-rs/postgresql-binaries)
# Liefert komplettes bin/ (postgres, initdb, psql, pg_dump, pg_dumpall, ...).
# ---------------------------------------------------------------------------
PG_VERSION="15.7.0"   # keep in sync with binaries/manifest.json
PG_BUNDLE_DIR="$DEST/postgres-bundle"
PG_VERSION_STAMP="$PG_BUNDLE_DIR/.rapport-version"

if [[ -x "$PG_BUNDLE_DIR/bin/postgres" && "$(cat "$PG_VERSION_STAMP" 2>/dev/null)" == "theseus-$PG_VERSION-$PG_TARGET" ]]; then
  echo "Postgres bundle already present (theseus $PG_VERSION $PG_TARGET): $PG_BUNDLE_DIR"
else
  echo "Downloading Postgres $PG_VERSION ($PG_TARGET) from theseus-rs ..."
  TMP=$(mktemp -d)
  trap 'rm -rf "$TMP"' EXIT
  URL="https://github.com/theseus-rs/postgresql-binaries/releases/download/$PG_VERSION/postgresql-$PG_VERSION-$PG_TARGET.tar.gz"
  curl --fail --location --silent --show-error -o "$TMP/pg.tar.gz" "$URL"

  rm -rf "$PG_BUNDLE_DIR"
  mkdir -p "$PG_BUNDLE_DIR"
  tar -xzf "$TMP/pg.tar.gz" -C "$PG_BUNDLE_DIR" --strip-components=1
  echo "theseus-$PG_VERSION-$PG_TARGET" > "$PG_VERSION_STAMP"
  echo "Postgres extracted to $PG_BUNDLE_DIR"
fi

# ---------------------------------------------------------------------------
# PostgREST (native binary via PostgREST GitHub releases)
# ---------------------------------------------------------------------------
PGRST_VERSION="v14.12"   # keep in sync with binaries/manifest.json
PGRST_BIN="$DEST/postgrest"
PGRST_STAMP="$DEST/.postgrest-version"

if [[ -x "$PGRST_BIN" && "$(cat "$PGRST_STAMP" 2>/dev/null)" == "$PGRST_VERSION-$PGRST_ASSET" ]]; then
  echo "PostgREST already present ($PGRST_VERSION-$PGRST_ASSET): $PGRST_BIN"
else
  echo "Downloading PostgREST $PGRST_VERSION ($PGRST_ASSET) ..."
  TMP_R=$(mktemp -d)
  URL="https://github.com/PostgREST/postgrest/releases/download/$PGRST_VERSION/postgrest-$PGRST_VERSION-$PGRST_ASSET.tar.xz"
  curl --fail --location --silent --show-error -o "$TMP_R/pgrst.tar.xz" "$URL"
  tar -xJf "$TMP_R/pgrst.tar.xz" -C "$TMP_R"
  mv "$TMP_R/postgrest" "$PGRST_BIN"
  chmod +x "$PGRST_BIN"
  rm -f "$DEST/postgrest.is-placeholder"
  echo "$PGRST_VERSION-$PGRST_ASSET" > "$PGRST_STAMP"
  rm -rf "$TMP_R"
  echo "PostgREST extracted to $PGRST_BIN"
fi

# Reste der ehemaligen Placeholder aufraeumen (gotrue/realtime/storage-api/kong/nginx
# laufen jetzt als Docker-Container und brauchen kein lokales Binary mehr).
for stale in gotrue realtime storage-api kong nginx; do
  rm -f "$DEST/$stale" "$DEST/$stale.is-placeholder"
done

for svc in "${PLACEHOLDER_SERVICES[@]}"; do
  target="$DEST/$svc"
  if [[ -x "$target" && ! -f "$target.is-placeholder" ]]; then
    continue
  fi
  cat > "$target" <<'PLACEHOLDER'
#!/usr/bin/env bash
echo "placeholder: $(basename "$0") would run here"
sleep 999999
PLACEHOLDER
  chmod +x "$target"
  touch "$target.is-placeholder"
done

echo "Done."
echo "  Postgres: $PG_BUNDLE_DIR (real)"
echo "  GoTrue:   $GOTRUE_BIN (real)"
echo "  Andere:   $DEST/{postgrest,realtime,storage-api,kong,nginx} (placeholder)"