#!/bin/sh
{
    set -eu

    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=
    case ":$PATH:" in
        *":/usr/local/bin:"*) INSTALL_DIR=/usr/local/bin ;;
    esac

    if [ -z "$INSTALL_DIR" ] && [ "$os" = darwin ]; then
        case ":$PATH:" in
            *":/opt/homebrew/bin:"*) INSTALL_DIR=/opt/homebrew/bin ;;
        esac
    fi

    if [ -z "$INSTALL_DIR" ]; then
        if [ "$os" = darwin ]; then
            echoerr "Your path is missing /usr/local/bin or /opt/homebrew/bin, you need to add one of them to use this installer."
        else
            echoerr "Your path is missing /usr/local/bin, you need to add this to use this installer."
        fi
        exit 1
    fi

    INSTALL_PATH="$INSTALL_DIR/devcloud"

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

    URL=https://cli.tribbles.cloud/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() {
        url=$1
        output=$2
        retry_all_errors=

        if curl_supports_retry_all_errors; then
            retry_all_errors=--retry-all-errors
        fi

        if curl --fail --location --silent --show-error --output "$output" \
            --retry 5 --retry-delay 2 --continue-at - $retry_all_errors \
            --http2 "$url"; then
            return 0
        fi

        echoerr "Download over HTTP/2 failed, retrying over HTTP/1.1..."
        curl --fail --location --silent --show-error --output "$output" \
            --retry 5 --retry-delay 2 --continue-at - $retry_all_errors \
            --http1.1 "$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
}