#!/bin/bash

# Check the root privileges
if [ "$(whoami)" != "root" ]; then
  echo "Requires root privileges"

  exit 1
fi

# Initialize the host OS variable
OS=$(uname -s)
case "$OS" in
    Linux)
        OS="linux"
        ;;
    Darwin)
        OS="darwin"
        ;;
    *)
        echo "Unsupported OS: $OS"
        echo "Supported OS are Linux and MacOS"

        exit 1
        ;;
esac

# Initialize the host architecture variable
ARCH=$(uname -m)
case "$ARCH" in
    x86_64)
        ARCH="amd64"
        ;;
    aarch64)
        ARCH="arm64"
        ;;
    arm64)
        ARCH="arm64"
        ;;
    *)
        echo "Unsupported architecture: $ARCH"
        echo "Supported architectures are x86_64, aarch64, and arm64"

        exit 1
        ;;
esac

# Install the CLI
echo "Installing dxflow ..."
# Define a temporary directory for download
TEMP_DIR=$(mktemp -d)
# Retrieve the latest version tag from GitHub without using jq
LATEST_URL=$(curl -s https://api.github.com/repos/diphyx/dxflow/tags | grep -m 1 '"name":' | sed -E 's/.*"name": *"([^"]+)".*/\1/')
if [ -z "$LATEST_URL" ]; then
    echo "Error: Unable to retrieve the latest version tag from GitHub."
    exit 1
fi
echo "Latest release tag: ${LATEST_URL}"
VERSION=$(basename "${LATEST_URL}")
CLEAN_VERSION=${VERSION#v}
echo "Downloading dxflow version ${CLEAN_VERSION} for ${OS} ${ARCH}..."
CLI_ARCHIVE="${TEMP_DIR}/dxflow_${CLEAN_VERSION}_${OS}_${ARCH}.tar.gz"
# Remove the leading "v" from the version for the file name
GITHUB_URL="https://github.com/diphyx/dxflow/releases/download/v${CLEAN_VERSION}/dxflow_${CLEAN_VERSION}_${OS}_${ARCH}.tar.gz"
echo "Downloading from: ${GITHUB_URL}"
# Download the CLI archive
wget -qO "${CLI_ARCHIVE}" "${GITHUB_URL}"
if [ $? -ne 0 ]; then
    echo "Failed to download ${CLI} from GitHub"
    echo "Please check your internet connection and try again"

    exit 1
fi

# Extract the CLI to /usr/local/bin
tar -xzf "${CLI_ARCHIVE}" -C /usr/local/bin
if [ $? -ne 0 ]; then
    echo "Failed to extract ${CLI} archive"
    echo "Please check the archive and try again"

    exit 1
fi

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

# Make the CLI executable
chmod +x "/usr/local/bin/dxflow"

# Done CLI installation
echo "dxflow installed successfully"
echo "You can verify the CLI installation by running: 'dxflow --version'"