#!/bin/bash
{
    set -euo pipefail

    SUDO=''
    if [ "$(id -u)" != "0" ]; then
      SUDO='sudo'
      echo "This script requires superuser access."
      echo "You will be prompted for your password by sudo."
      # clear any previous sudo permission
      sudo -k
    fi

    echoerr() { echo "$@" 1>&2; }

    case $(uname -s) in
        Linux|linux) os=linux ;;
        Darwin|darwin) os=darwin ;;
        *) os= ;;
    esac

    if [ -z "$os" ]; then
        echoerr "OS $(uname -s) not supported."
        exit 1
    fi

    case $(uname -m) in
        amd64|x86_64) arch=amd64 ;;
        arm64|aarch64) arch=arm64 ;;
        *) arch= ;;
    esac

    if [ -z "$arch" ]; then
        echoerr "Architecture  $(uname -m) not supported."
        exit 1
    fi

    INSTALL_DIR=/usr/local/bin
    INSTALL_PATH="$INSTALL_DIR/devcloud"

    if [[ ! ":$PATH:" == *":$INSTALL_DIR:"* ]]; then
      echoerr "Your path is missing /usr/local/bin, you need to add this to use this installer."
      exit 1
    fi

    $SUDO install -d -m 755 "$INSTALL_DIR"

    URL=https://cli.sehlat.io/bin/$os/$arch/devcloud
    echo "Downloading CLI from $URL to a temporary file..."

    TMPFILE=$(mktemp)
    trap 'rm -f "$TMPFILE"' EXIT

    curl_supports_retry_all_errors() {
        curl --help all 2>/dev/null | grep -q -- '--retry-all-errors'
    }

    download_with_curl() {
        local url=$1
        local output=$2
        local curl_args=(
            --fail
            --location
            --silent
            --show-error
            --output "$output"
            --retry 5
            --retry-delay 2
            --continue-at -
        )

        if curl_supports_retry_all_errors; then
            curl_args+=(--retry-all-errors)
        fi

        if curl "${curl_args[@]}" --http2 "$url"; then
            return 0
        fi

        echoerr "Download over HTTP/2 failed, retrying over HTTP/1.1..."
        curl "${curl_args[@]}" --http1.1 "$url"
    }

    if command -v curl >/dev/null 2>&1; then
        download_with_curl "$URL" "$TMPFILE"
    elif command -v wget >/dev/null 2>&1; then
        wget -O "$TMPFILE" "$URL"
    else
        echoerr "This installer requires curl or wget."
        exit 1
    fi

    if [ ! -s "$TMPFILE" ]; then
        echoerr "Downloaded file is empty."
        exit 1
    fi

    echo "Installing devcloud to $INSTALL_DIR..."

    $SUDO install -m 755 "$TMPFILE" "$INSTALL_PATH"

    echo "devcloud installed to $INSTALL_PATH"
    devcloud --version
}