#!/bin/bash

# Exit immediately if a command exits with a non-zero status
set -e

# --- INTERACTIVE PROMPT ---
read -p "Enter the target installation directory [/var/www/html/osticket]: " INSTALL_DIR
INSTALL_DIR="${INSTALL_DIR:-/var/www/html/osticket}"

# --- CONFIGURATION ---
# IMPORTANT: Adjust these for your OS. 
# Fedora/RHEL/CentOS typically uses 'apache'
# Ubuntu/Debian typically uses 'www-data'
read -p "Enter web server user [apache]: " WEB_USER
WEB_USER="${WEB_USER:-apache}"
read -p "Enter web server group [apache]: " WEB_GROUP
WEB_GROUP="${WEB_GROUP:-apache}"

OSTICKET_VERSION="v1.18.3"
DOWNLOAD_URL="https://github.com/osTicket/osTicket/releases/download/${OSTICKET_VERSION}/osTicket-${OSTICKET_VERSION}.zip"

echo "=== Starting osTicket ${OSTICKET_VERSION} Installation ==="
echo "Target Directory: ${INSTALL_DIR}"

# 1. Set SELinux to Permissive mode
echo "Setting SELinux to permissive mode..."
sudo setenforce 0

# 2. Ensure required dependencies are present
if ! command -v unzip &> /dev/null || ! command -v wget &> /dev/null; then
    echo "Installing required dependencies (unzip, wget)..."
    if [ -f /etc/debian_version ]; then
        sudo apt-get update && sudo apt-get install -y unzip wget
    elif [ -f /etc/redhat-release ]; then
        sudo dnf install -y unzip wget
    fi
fi

# 3. Create the target directory
echo "Creating target directory..."
sudo mkdir -p "${INSTALL_DIR}"

# 4. Download osTicket archive
echo "Downloading osTicket..."
TEMP_DIR=$(mktemp -d)
wget -q "${DOWNLOAD_URL}" -O "${TEMP_DIR}/osticket.zip"

# 5. Extract files to the target directory
echo "Extracting files..."
sudo unzip -q "${TEMP_DIR}/osticket.zip" -d "${TEMP_DIR}/extracted"
sudo cp -r "${TEMP_DIR}/extracted/upload/"* "${INSTALL_DIR}/"

# Clean up temp directory
rm -rf "${TEMP_DIR}"

# 6. Rename the configuration file
echo "Renaming ost-sampleconfig.php to ost-config.php..."
if [ -f "${INSTALL_DIR}/include/ost-sampleconfig.php" ]; then
    sudo mv "${INSTALL_DIR}/include/ost-sampleconfig.php" "${INSTALL_DIR}/include/ost-config.php"
else
    echo "Error: Sample configuration file not found!"
    exit 1
fi

# 7. Apply permissions and set ownership
echo "Applying permissions and setting ownership for user: ${WEB_USER}..."
sudo chown -R "${WEB_USER}:${WEB_GROUP}" "${INSTALL_DIR}"
sudo chmod 0755 "${INSTALL_DIR}"
sudo chmod 0666 "${INSTALL_DIR}/include/ost-config.php"

echo "=== Installation Complete! ==="
echo "osTicket is ready at: ${INSTALL_DIR}"
echo "You can now complete the setup via your browser."