#!/bin/bash

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
CONFIG_DIR="$PROJECT_DIR/config"
CONFIG_FILE="$PROJECT_DIR/config.json"
ENV_FILE="$PROJECT_DIR/.env"
BUILD_DIR="$PROJECT_DIR/build"
ICON_FILE="$PROJECT_DIR/data/assets/icon.png"

if [ -f "$ENV_FILE" ]; then
    set -a
    # shellcheck disable=SC1090
    . "$ENV_FILE"
    set +a
fi

SYSTEM_PYTHON="${PYTHON_PATH:-python3}"
if ! command -v "$SYSTEM_PYTHON" >/dev/null 2>&1; then
    echo "[ERROR] Python introuvable : $SYSTEM_PYTHON" >&2
    exit 1
fi
if ! command -v zip >/dev/null 2>&1; then
    echo "[ERROR] La commande zip est requise pour creer l'archive." >&2
    exit 1
fi

APP_NAME="$("$SYSTEM_PYTHON" -c "import json; print(json.load(open(r'$CONFIG_FILE', encoding='utf-8'))['app_name'])")"
ARCHITECTURE="$("$SYSTEM_PYTHON" -c "import json; print(json.load(open(r'$CONFIG_FILE', encoding='utf-8'))['architecture'])")"
OS_NAME="$(uname -s)"

case "$OS_NAME" in
    Darwin)
        ENV_NAME="MACenv_${ARCHITECTURE}"
        APP_FILE="$APP_NAME.app"
        ;;
    Linux)
        ENV_NAME="LINenv_${ARCHITECTURE}"
        APP_FILE="$APP_NAME"
        ;;
    *)
        echo "[ERROR] Systeme non supporte : $OS_NAME" >&2
        exit 1
        ;;
esac

ENV_PATH="$CONFIG_DIR/$ENV_NAME"
PYTHON_IN_VENV="$ENV_PATH/bin/python"
ZIP_FILE="$BUILD_DIR/${APP_NAME}-${OS_NAME}.zip"

if [ ! -x "$PYTHON_IN_VENV" ]; then
    echo "[INFO] Creation de l'environnement $ENV_NAME..."
    "$SYSTEM_PYTHON" -m venv "$ENV_PATH"
    "$PYTHON_IN_VENV" -m pip install --upgrade pip
    "$PYTHON_IN_VENV" -m pip install -r "$CONFIG_DIR/requirements.txt"
else
    echo "[INFO] Environnement $ENV_NAME trouve."
fi

mkdir -p "$BUILD_DIR"
cd "$PROJECT_DIR"
"$PYTHON_IN_VENV" -m PyInstaller \
    --distpath "$BUILD_DIR" \
    --workpath "$BUILD_DIR/dist" \
    --clean \
    "$CONFIG_DIR/BUILD.spec"
rm -rf "$BUILD_DIR/dist"

if [ ! -e "$BUILD_DIR/$APP_FILE" ]; then
    echo "[ERROR] Artefact attendu introuvable : $BUILD_DIR/$APP_FILE" >&2
    exit 1
fi

TEMP_ZIP_DIR="$BUILD_DIR/temp_zip"
rm -rf "$TEMP_ZIP_DIR"
mkdir -p "$TEMP_ZIP_DIR"
mv "$BUILD_DIR/$APP_FILE" "$TEMP_ZIP_DIR/"
cp "$CONFIG_FILE" "$TEMP_ZIP_DIR/"
cp "$ICON_FILE" "$TEMP_ZIP_DIR/"
cp -R "$PROJECT_DIR/data/lang" "$TEMP_ZIP_DIR/lang"

if [ "$OS_NAME" = "Linux" ] && [ -f "$BUILD_DIR/$APP_NAME.desktop" ]; then
    cp "$BUILD_DIR/$APP_NAME.desktop" "$TEMP_ZIP_DIR/"
fi

rm -f "$ZIP_FILE"
(cd "$BUILD_DIR" && zip -r "$ZIP_FILE" "temp_zip" >/dev/null)
rm -rf "$TEMP_ZIP_DIR"

echo "[INFO] Archive creee : $ZIP_FILE"