#!/bin/bash
#################################################
# Please do not make any changes to this file,  #
# change the variables in webui-user.sh instead #
#################################################
# 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 "${install_dir}" ]]
then
    install_dir="/home/$(whoami)"
fi

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

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

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

# Do not run as root
if [[ $(id -u) -eq 0 ]]
then
    printf "\n%s\n" "${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 [[ -d .git ]]
then
    printf "\n%s\n" "${delimiter}"
    printf "Repo already cloned, using it as install directory"
    printf "\n%s\n" "${delimiter}"
    install_dir="${PWD}/../"
    clone_dir="${PWD##*/}"
fi

# Check prequisites
for preq in git python3
do
    if ! hash "${preq}" &>/dev/null
    then
        printf "\n%s\n" "${delimiter}"
        printf "\e[1m\e[31mERROR: %s is not installed, aborting...\e[0m" "${preq}"
        printf "\n%s\n" "${delimiter}"
        exit 1
    fi
done

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

printf "\n%s\n" "${delimiter}"
printf "Clone or update stable-diffusion-webui"
printf "\n%s\n" "${delimiter}"
cd "${install_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/, aborting...\e[0m" "${install_dir}"; exit 1; }
if [[ -d "${clone_dir}" ]]
then
    cd "${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
    "${GIT}" pull
else
    "${GIT}" clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git "${clone_dir}"
    cd "${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
fi

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

printf "\n%s\n" "${delimiter}"
printf "Launching launch.py..."
printf "\n%s\n" "${delimiter}"
"${python_cmd}" "${LAUNCH_SCRIPT}"