#!/data/data/com.termux/files/usr/bin/bash

# Script: GCloud SDK Installer for Termux
# Description: Automates the installation and setup of Google Cloud SDK on Termux.
# Author: Samir Badaila
# Version: 1.1
# Date: 2025-02-27

set -e # Exit on error

# Color codes for terminal output
GREEN='\033[0;32m'
RED='\033[0;31m'
BLUE='\033[0;34m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Function to display a header
header() {
    clear
    echo -e "${GREEN}========================================${NC}"
    echo -e "${GREEN}   Google Cloud SDK Installer for Termux   ${NC}"
    echo -e "${GREEN}========================================${NC}"
    echo -e "${BLUE}Version: 1.1 | Published Date: 2025-02-27${NC}\n"
}

success() {
    echo -e "${GREEN}[✓] $1${NC}"
}

error() {
    echo -e "${RED}[✗] Error: $1${NC}"
    exit 1
}

warning() {
    echo -e "${YELLOW}[!] Warning: $1${NC}"
}

install_package() {
    local package=$1
    echo -e "${BLUE}[~] Installing $package...${NC}"
    if pkg install "$package" -y >/dev/null 2>&1; then
        success "$package installed successfully."
    else
        warning "Failed to install $package. Skipping..."
    fi
}

header

echo -e "${BLUE}[~] Updating system packages...${NC}"
if pkg update -y >/dev/null 2>&1; then
    success "System packages updated successfully."
else
    error "Failed to update system packages. Check your network connection."
fi

ARCH=$(dpkg --print-architecture)
SUPPORTED_ARCHS=("aarch64" "arm")
if [[ ! " ${SUPPORTED_ARCHS[*]} " =~ " ${ARCH} " ]]; then
    error "Unsupported architecture: $ARCH. Only 'aarch64' and 'arm' are supported."
fi
echo -e "${BLUE}[~] Detected architecture: $ARCH${NC}"

DEPENDENCIES=("ldns" "libffi" "python" "openssl" "openssh" "libsqlite" "libresolv-wrapper")
echo -e "${BLUE}[~] Installing dependencies...${NC}"
for package in "${DEPENDENCIES[@]}"; do
    install_package "$package"
done
success "All dependencies installed successfully."

echo -e "${BLUE}[~] Downloading Google Cloud SDK...${NC}"
TEMP_DIR=$(mktemp -d)
GCLOUD_URL="https://dl.google.com/dl/cloudsdk/channels/rapid/google-cloud-sdk.tar.gz"
if curl -# -f "$GCLOUD_URL" -o "$TEMP_DIR/gcloud.tar.gz"; then
    success "Google Cloud SDK downloaded successfully."
else
    error "Failed to download Google Cloud SDK."
fi

echo -e "${BLUE}[~] Extracting Google Cloud SDK...${NC}"
if tar --strip-components=1 -C "$PREFIX" -zxf "$TEMP_DIR/gcloud.tar.gz"; then
    success "Google Cloud SDK extracted successfully."
else
    error "Failed to extract Google Cloud SDK."
fi

echo -e "${BLUE}[~] Configuring environment...${NC}"
if ! grep -q "$PREFIX/bin" "$HOME/.bashrc"; then
    echo "export PATH=\$PATH:$PREFIX/bin" >> "$HOME/.bashrc"
fi
if ! grep -q "CLOUDSDK_PYTHON" "$HOME/.bashrc"; then
    echo "export CLOUDSDK_PYTHON=$(command -v python3)" >> "$HOME/.bashrc"
fi
source "$HOME/.bashrc"
success "Environment configured successfully."

echo -e "${BLUE}[~] Verifying Google Cloud SDK installation...${NC}"
if command -v gcloud &>/dev/null; then
    success "Google Cloud SDK is installed. Version details:"
    gcloud --version
else
    error "Google Cloud SDK installation failed."
fi

echo -e "${BLUE}[~] Cleaning up cache files...${NC}"
if rm -rf "$TEMP_DIR" 2>/dev/null; then
    success "Cache files removed successfully."
else
    warning "Failed to clean up temporary files."
fi

echo -e "\n${GREEN}========================================${NC}"
echo -e "${GREEN}   Google Cloud SDK Installation Complete   ${NC}"
echo -e "${GREEN}========================================${NC}"
echo -e "${BLUE}Run 'gcloud init' to configure your Google Cloud account.${NC}"