#!/bin/bash

set -e

# ==========================================
# Linux Parental Control Installer
# ==========================================

if [ "$EUID" -ne 0 ]; then
    echo "Please run with sudo:"
    echo "  sudo ./install.sh"
    exit 1
fi

INSTALL_DIR="$(cd "$(dirname "$0")" && pwd)"

APP_NAME="Parental Control"
DESKTOP_FILE="/usr/share/applications/parental-control.desktop"
SERVICE_FILE="/etc/systemd/system/parental-control.service"

echo
echo "=========================================="
echo " Linux Parental Control Installer"
echo "=========================================="
echo
echo "Installing from:"
echo "  $INSTALL_DIR"
echo

# ------------------------------------------
# 1. System dependencies
# ------------------------------------------

echo "[1/6] Installing system dependencies"

pacman -S --needed --noconfirm \
    python \
    python-pip

echo
echo "System dependencies installed."

# ------------------------------------------
# 2. Python virtual environment
# ------------------------------------------

echo
echo "[2/6] Creating Python virtual environment"

if [ ! -d "$INSTALL_DIR/.venv" ]; then
    python -m venv "$INSTALL_DIR/.venv"
else
    echo "Virtual environment already exists."
fi

echo
echo "Virtual environment ready."

# ------------------------------------------
# 3. Python dependencies
# ------------------------------------------

echo
echo "[3/6] Installing Python packages"

"$INSTALL_DIR/.venv/bin/python" -m pip install \
    --upgrade pip

"$INSTALL_DIR/.venv/bin/python" -m pip install \
    -r "$INSTALL_DIR/requirements.txt"

echo
echo "Python packages installed."

# ------------------------------------------
# 4. Install systemd service
# ------------------------------------------

echo
echo "[4/6] Installing systemd service"

sed \
    "s|%INSTALL_DIR%|$INSTALL_DIR|g" \
    "$INSTALL_DIR/parental-control.service" \
    > "$SERVICE_FILE"

chmod 644 "$SERVICE_FILE"

systemctl daemon-reload
systemctl enable parental-control.service
systemctl restart parental-control.service

echo
echo "Systemd service installed and started."

# ------------------------------------------
# 5. Install desktop application
# ------------------------------------------

echo
echo "[5/6] Installing application launcher"

cat > "$DESKTOP_FILE" <<EOF
[Desktop Entry]
Name=$APP_NAME
Comment=Linux Parental Control Manager
Exec=$INSTALL_DIR/.venv/bin/python -m desktop.main
Path=$INSTALL_DIR
Icon=preferences-system-parental-controls
Terminal=false
Type=Application
Categories=Settings;
StartupNotify=true
EOF

chmod 644 "$DESKTOP_FILE"

echo
echo "Desktop launcher installed:"
echo "  $DESKTOP_FILE"

# ------------------------------------------
# 6. Update desktop database
# ------------------------------------------

echo
echo "[6/6] Updating application database"

if command -v update-desktop-database >/dev/null 2>&1; then
    update-desktop-database /usr/share/applications
else
    echo "update-desktop-database is not installed."
    echo "Skipping desktop database update."
fi

# ------------------------------------------
# Verify installation
# ------------------------------------------

echo
echo "=========================================="
echo " Installation complete"
echo "=========================================="
echo
echo "Application:"
echo "  $APP_NAME"
echo
echo "Launch it from your application menu."
echo "On your system:"
echo "  Super + D"
echo
echo "Service:"
echo "  systemctl status parental-control"
echo
echo "=========================================="