#!/usr/bin/env bash
#
# Construit un paquet Flatpak de Pena à partir du .deb généré par Tauri.
#
# Étapes :
#   1. `cargo tauri build --bundles deb`  -> produit le .deb autonome
#   2. Copie du .deb à côté du manifeste sous le nom `pena.deb`
#   3. `flatpak-builder` construit le bundle dans la sandbox GNOME
#   4. Installation locale (--user) et/ou export en fichier .flatpak
#
# Usage :
#   ./build-flatpak.sh            # build + installation locale (--user)
#   ./build-flatpak.sh --bundle   # build + export d'un fichier Pena.flatpak
#   ./build-flatpak.sh --no-deb   # réutilise le .deb déjà présent (build rapide)
#
set -euo pipefail

APP_ID="com.pena.app"
RUNTIME_VERSION="48"

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"          # .../Pena-tauri
MANIFEST="$SCRIPT_DIR/${APP_ID}.yml"
BUILD_DIR="$SCRIPT_DIR/.build"                  # arbre de build flatpak-builder
REPO_DIR="$SCRIPT_DIR/.repo"                    # dépôt ostree temporaire
DEB_TARGET="$SCRIPT_DIR/pena.deb"

DO_BUNDLE=0
BUILD_DEB=1
for arg in "$@"; do
  case "$arg" in
    --bundle) DO_BUNDLE=1 ;;
    --no-deb) BUILD_DEB=0 ;;
    -h|--help) sed -n '2,16p' "$0"; exit 0 ;;
    *) echo "Argument inconnu : $arg" >&2; exit 1 ;;
  esac
done

# --- Vérification des outils -------------------------------------------------
need() { command -v "$1" >/dev/null 2>&1 || { echo "Outil manquant : $1" >&2; exit 1; }; }
need flatpak
if ! command -v flatpak-builder >/dev/null 2>&1; then
  echo "flatpak-builder est requis. Installez-le :" >&2
  echo "  flatpak install -y flathub org.flatpak.Builder" >&2
  echo "  (puis lancez ce script via : flatpak run org.flatpak.Builder ...)" >&2
  echo "  ou sur Fedora :  sudo dnf install flatpak-builder" >&2
  exit 1
fi

# --- Runtime / SDK GNOME -----------------------------------------------------
echo ">> Vérification du runtime GNOME ${RUNTIME_VERSION}…"
if ! flatpak info "org.gnome.Platform//${RUNTIME_VERSION}" >/dev/null 2>&1; then
  flatpak install -y --user flathub \
    "org.gnome.Platform//${RUNTIME_VERSION}" \
    "org.gnome.Sdk//${RUNTIME_VERSION}"
fi

# --- 1. Build du .deb via Tauri ---------------------------------------------
if [[ "$BUILD_DEB" -eq 1 ]]; then
  echo ">> Build du paquet .deb (cargo tauri build --bundles deb)…"
  ( cd "$PROJECT_DIR" && cargo tauri build --bundles deb )
fi

DEB_SRC="$(find "$PROJECT_DIR/src-tauri/target/release/bundle/deb" -name '*.deb' 2>/dev/null | sort | tail -n1 || true)"
if [[ -z "$DEB_SRC" ]]; then
  echo "Aucun .deb trouvé. Lancez le script sans --no-deb." >&2
  exit 1
fi
echo ">> Utilisation du .deb : $DEB_SRC"
cp -f "$DEB_SRC" "$DEB_TARGET"

# --- 2. Build Flatpak --------------------------------------------------------
echo ">> Construction du Flatpak…"
rm -rf "$BUILD_DIR"
FB_ARGS=(--force-clean --user --repo="$REPO_DIR")
if [[ "$DO_BUNDLE" -eq 0 ]]; then
  FB_ARGS+=(--install)
fi
flatpak-builder "${FB_ARGS[@]}" "$BUILD_DIR" "$MANIFEST"

# --- 3. Export d'un fichier .flatpak (optionnel) -----------------------------
if [[ "$DO_BUNDLE" -eq 1 ]]; then
  OUT="$SCRIPT_DIR/Pena.flatpak"
  echo ">> Export du bundle : $OUT"
  flatpak build-bundle "$REPO_DIR" "$OUT" "$APP_ID" "$RUNTIME_VERSION" 2>/dev/null \
    || flatpak build-bundle "$REPO_DIR" "$OUT" "$APP_ID"
  echo ">> Installer avec :  flatpak install --user $OUT"
else
  echo ">> Installé. Lancer avec :  flatpak run $APP_ID"
fi

echo ">> Terminé."