#!/usr/bin/env bash
#################################################
# Please do not make any changes to this file,  #
# change the variables in webui-user.sh instead #
#################################################

# If run from macOS, load defaults from webui-macos-env.sh
if [[ "$OSTYPE" == "darwin"* ]]; then
    if [[ -f webui-macos-env.sh ]]
        then
        source ./webui-macos-env.sh
    fi
fi

# Read variables from webui-user.sh
# shellcheck source=/dev/null
if [[ -f webui-user.sh ]]
then
    source ./webui-user.sh
fi

# Set defaults
# Install directory without trailing slash
if [[ -z "${install_dir}" ]]
then
    install_dir="$(pwd)"
fi

# Name of the subdirectory (defaults to hcp-diffusion-webui)
if [[ -z "${clone_dir}" ]]
then
    clone_dir="hcp-diffusion-webui"
fi

# python3 executable
if [[ -z "${python_cmd}" ]]
then
    python_cmd="python"
fi

# nodejs executable
if [[ -z "${nodejs_cmd}" ]]
then
    nodejs_cmd="node"
fi

# git executable
if [[ -z "${GIT}" ]]
then
    export GIT="git"
fi

# python3 venv without trailing slash (defaults to ${install_dir}/${clone_dir}/venv)
if [[ -z "${venv_dir}" ]]
then
    venv_dir="venv"
fi

if [[ -z "${LAUNCH_SCRIPT}" ]]
then
    LAUNCH_SCRIPT="launch.sh"
fi

# this script cannot be run as root by default
can_run_as_root=0

# read any command line flags to the webui.sh script
while getopts "f" flag > /dev/null 2>&1
do
    case ${flag} in
        f) can_run_as_root=1;;
        *) break;;
    esac
done

# Disable sentry logging
export ERROR_REPORTING=FALSE

# Do not reinstall existing pip packages on Debian/Ubuntu
export PIP_IGNORE_INSTALLED=0

# Pretty print
delimiter="################################################################"

printf "\n%s\n" "${delimiter}"
printf "\e[1m\e[32mInstall script for hcp-diffusion + Web UI\n"
printf "\e[1m\e[34mTested on Debian 11 (Bullseye)\e[0m"
printf "\n%s\n" "${delimiter}"

# Do not run as root
if [[ $(id -u) -eq 0 && can_run_as_root -eq 0 ]]
then
    printf "\n%s\n" "${delimiter}"
    printf "\e[1m\e[31mERROR: This script must not be launched as root, aborting...\e[0m"
    printf "\n%s\n" "${delimiter}"
    exit 1
else
    printf "\n%s\n" "${delimiter}"
    printf "Running on \e[1m\e[32m%s\e[0m user" "$(whoami)"
    printf "\n%s\n" "${delimiter}"
fi

if [[ $(getconf LONG_BIT) = 32 ]]
then
    printf "\n%s\n" "${delimiter}"
    printf "\e[1m\e[31mERROR: Unsupported Running on a 32bit OS\e[0m"
    printf "\n%s\n" "${delimiter}"
    exit 1
fi

if ! "${python_cmd}" -c "import venv" &>/dev/null
then
    printf "\n%s\n" "${delimiter}"
    printf "\e[1m\e[31mERROR: python3-venv is not installed, aborting...\e[0m"
    printf "\n%s\n" "${delimiter}"
    exit 1
fi

if [[ -z "${VIRTUAL_ENV}" ]];
then
    printf "\n%s\n" "${delimiter}"
    printf "Create and activate python venv"
    printf "\n%s\n" "${delimiter}"
    # cd "${install_dir}"/"${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
    if [[ ! -d "${venv_dir}" ]]
    then
        "${python_cmd}" -m venv "${venv_dir}"
        first_launch=1
    fi
    # shellcheck source=/dev/null
    if [[ -f "${venv_dir}"/bin/activate ]]
    then
        source "${venv_dir}"/bin/activate
    else
        printf "\n%s\n" "${delimiter}"
        printf "\e[1m\e[31mERROR: Cannot activate python venv, aborting...\e[0m"
        printf "\n%s\n" "${delimiter}"
        exit 1
    fi
else
    printf "\n%s\n" "${delimiter}"
    printf "python venv already activate: ${VIRTUAL_ENV}"
    printf "\n%s\n" "${delimiter}"
fi

# Try using TCMalloc on Linux
prepare_tcmalloc() {
    if [[ "${OSTYPE}" == "linux"* ]] && [[ -z "${NO_TCMALLOC}" ]] && [[ -z "${LD_PRELOAD}" ]]; then
        TCMALLOC="$(ldconfig -p | grep -Po "libtcmalloc.so.\d" | head -n 1)"
        if [[ ! -z "${TCMALLOC}" ]]; then
            echo "Using TCMalloc: ${TCMALLOC}"
            export LD_PRELOAD="${TCMALLOC}"
        else
            printf "\e[1m\e[31mCannot locate TCMalloc (improves CPU memory usage)\e[0m\n"
        fi
    fi
}

launch_webui() {
    "${python_cmd}" ./env_check.py
    cd web
    npm install || { echo "npm install failed"; exit 1; }
    npm run build || { echo "npm run build failed"; exit 1; }
    cd ..
    "${python_cmd}" web/hcpdiff-server/main.py
}


printf "\n%s\n" "${delimiter}"
printf "Launching..."
printf "\n%s\n" "${delimiter}"
prepare_tcmalloc
launch_webui
