# shellcheck shell=bash
# Define this here so it can be used by all of the Powerline themes
THEME_CHECK_SUDO=${THEME_CHECK_SUDO:=true}

function set_color() {
	set +u
	if [[ "${1}" != "-" ]]; then
		fg="38;5;${1}"
	fi
	if [[ "${2}" != "-" ]]; then
		bg="48;5;${2}"
		[[ -n "${fg}" ]] && bg=";${bg}"
	fi
	echo -e "\[\033[${fg}${bg}m\]"
}

function __powerline_user_info_prompt() {
	local user_info=""
	local color=${USER_INFO_THEME_PROMPT_COLOR}

	if [[ "${THEME_CHECK_SUDO}" = true ]]; then
		sudo -vn 1> /dev/null 2>&1 && color=${USER_INFO_THEME_PROMPT_COLOR_SUDO}
	fi

	case "${POWERLINE_PROMPT_USER_INFO_MODE}" in
		"sudo")
			if [[ "${color}" = "${USER_INFO_THEME_PROMPT_COLOR_SUDO}" ]]; then
				user_info="!"
			fi
			;;
		*)
			local user=${SHORT_USER:-${USER}}
			if [[ -n "${SSH_CLIENT}" ]] || [[ -n "${SSH_CONNECTION}" ]]; then
				user_info="${USER_INFO_SSH_CHAR}${user}"
			else
				user_info="${user}"
			fi
			;;
	esac
	[[ -n "${user_info}" ]] && echo "${user_info}|${color}"
}

function __powerline_terraform_prompt() {
	local terraform_workspace=""

	if [ -d .terraform ]; then
		terraform_workspace="$(terraform_workspace_prompt)"
		[[ -n "${terraform_workspace}" ]] && echo "${TERRAFORM_CHAR}${terraform_workspace}|${TERRAFORM_THEME_PROMPT_COLOR}"
	fi
}

function __powerline_gcloud_prompt() {
	local active_gcloud_account=""

	active_gcloud_account="$(active_gcloud_account_prompt)"
	[[ -n "${active_gcloud_account}" ]] && echo "${GCLOUD_CHAR}${active_gcloud_account}|${GCLOUD_THEME_PROMPT_COLOR}"
}

function __powerline_node_prompt() {
	local node_version=""

	node_version="$(node_version_prompt)"
	[[ -n "${node_version}" ]] && echo "${NODE_CHAR}${node_version}|${NODE_THEME_PROMPT_COLOR}"
}

function __powerline_ruby_prompt() {
	local ruby_version=""

	if _command_exists rvm; then
		ruby_version="$(rvm_version_prompt)"
	elif _command_exists rbenv; then
		ruby_version=$(rbenv_version_prompt)
	fi

	[[ -n "${ruby_version}" ]] && echo "${RUBY_CHAR}${ruby_version}|${RUBY_THEME_PROMPT_COLOR}"
}

function __powerline_k8s_context_prompt() {
	local kubernetes_context=""

	if _command_exists kubectl; then
		kubernetes_context="$(k8s_context_prompt)"
	fi

	[[ -n "${kubernetes_context}" ]] && echo "${KUBERNETES_CONTEXT_THEME_CHAR}${kubernetes_context}|${KUBERNETES_CONTEXT_THEME_PROMPT_COLOR}"
}

function __powerline_k8s_namespace_prompt() {
	local kubernetes_namespace=""

	if _command_exists kubectl; then
		kubernetes_namespace="$(k8s_namespace_prompt)"
	fi

	[[ -n "${kubernetes_namespace}" ]] && echo "${KUBERNETES_NAMESPACE_THEME_CHAR}${kubernetes_namespace}|${KUBERNETES_NAMESPACE_THEME_PROMPT_COLOR}"
}

function __powerline_python_venv_prompt() {
	set +u
	local python_venv=""

	if [[ -n "${CONDA_DEFAULT_ENV}" ]]; then
		python_venv="${CONDA_DEFAULT_ENV}"
		PYTHON_VENV_CHAR=${CONDA_PYTHON_VENV_CHAR}
	elif [[ -n "${VIRTUAL_ENV}" ]]; then
		python_venv=$(basename "${VIRTUAL_ENV}")
	fi

	[[ -n "${python_venv}" ]] && echo "${PYTHON_VENV_CHAR}${python_venv}|${PYTHON_VENV_THEME_PROMPT_COLOR}"
}

function __powerline_scm_prompt() {
	local color=""
	local scm_prompt=""

	scm_prompt_vars

	if [[ "${SCM_NONE_CHAR}" != "${SCM_CHAR}" ]]; then
		if [[ "${SCM_DIRTY}" -eq 3 ]]; then
			color=${SCM_THEME_PROMPT_STAGED_COLOR}
		elif [[ "${SCM_DIRTY}" -eq 2 ]]; then
			color=${SCM_THEME_PROMPT_UNSTAGED_COLOR}
		elif [[ "${SCM_DIRTY}" -eq 1 ]]; then
			color=${SCM_THEME_PROMPT_DIRTY_COLOR}
		else
			color=${SCM_THEME_PROMPT_CLEAN_COLOR}
		fi
		if [[ "${SCM_GIT_CHAR}" == "${SCM_CHAR}" ]]; then
			scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
		elif [[ "${SCM_P4_CHAR}" == "${SCM_CHAR}" ]]; then
			scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
		elif [[ "${SCM_HG_CHAR}" == "${SCM_CHAR}" ]]; then
			scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
		elif [[ "${SCM_SVN_CHAR}" == "${SCM_CHAR}" ]]; then
			scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
		fi
		echo "$(eval "echo ${scm_prompt}")${scm}|${color}"
	fi
}

function __powerline_cwd_prompt() {
	local cwd=$(pwd | sed "s|^${HOME}|~|")

	echo "${cwd}|${CWD_THEME_PROMPT_COLOR}"
}

function __powerline_hostname_prompt() {
	echo "${SHORT_HOSTNAME:-$(hostname -s)}|${HOST_THEME_PROMPT_COLOR}"
}

function __powerline_wd_prompt() {
	echo "\W|${CWD_THEME_PROMPT_COLOR}"
}

function __powerline_clock_prompt() {
	echo "$(date +"${THEME_CLOCK_FORMAT}")|${CLOCK_THEME_PROMPT_COLOR}"
}

function __powerline_battery_prompt() {
	local color=""
	local battery_status="$(battery_percentage 2> /dev/null)"

	if [[ -z "${battery_status}" ]] || [[ "${battery_status}" = "-1" ]] || [[ "${battery_status}" = "no" ]]; then
		true
	else
		if [[ "$((10#${battery_status}))" -le 5 ]]; then
			color="${BATTERY_STATUS_THEME_PROMPT_CRITICAL_COLOR}"
		elif [[ "$((10#${battery_status}))" -le 25 ]]; then
			color="${BATTERY_STATUS_THEME_PROMPT_LOW_COLOR}"
		else
			color="${BATTERY_STATUS_THEME_PROMPT_GOOD_COLOR}"
		fi
		ac_adapter_connected && battery_status="${BATTERY_AC_CHAR}${battery_status}"
		echo "${battery_status}%|${color}"
	fi
}

function __powerline_in_vim_prompt() {
	if [ -n "$VIMRUNTIME" ]; then
		echo "${IN_VIM_THEME_PROMPT_TEXT}|${IN_VIM_THEME_PROMPT_COLOR}"
	fi
}

function __powerline_aws_profile_prompt() {
	if [[ -n "${AWS_PROFILE}" ]]; then
		echo "${AWS_PROFILE_CHAR}${AWS_PROFILE}|${AWS_PROFILE_PROMPT_COLOR}"
	fi
}

function __powerline_in_toolbox_prompt() {
	if [ -f /run/.containerenv ] && [ -f /run/.toolboxenv ]; then
		echo "${IN_TOOLBOX_THEME_PROMPT_TEXT}|${IN_TOOLBOX_THEME_PROMPT_COLOR}"
	fi
}

function __powerline_shlvl_prompt() {
	if [[ "${SHLVL}" -gt 1 ]]; then
		local prompt="${SHLVL_THEME_PROMPT_CHAR}"
		local level=$((SHLVL - 1))
		echo "${prompt}${level}|${SHLVL_THEME_PROMPT_COLOR}"
	fi
}

function __powerline_dirstack_prompt() {
	if [[ "${#DIRSTACK[@]}" -gt 1 ]]; then
		local depth=$((${#DIRSTACK[@]} - 1))
		local prompt="${DIRSTACK_THEME_PROMPT_CHAR}"
		if [[ "${depth}" -ge 2 ]]; then
			prompt+="${depth}"
		fi
		echo "${prompt}|${DIRSTACK_THEME_PROMPT_COLOR}"
	fi
}

function __powerline_history_number_prompt() {
	echo "${HISTORY_NUMBER_THEME_PROMPT_CHAR}\!|${HISTORY_NUMBER_THEME_PROMPT_COLOR}"
}

function __powerline_command_number_prompt() {
	echo "${COMMAND_NUMBER_THEME_PROMPT_CHAR}\#|${COMMAND_NUMBER_THEME_PROMPT_COLOR}"
}

function __powerline_duration_prompt() {
	local duration=$(_command_duration)
	[[ -n "$duration" ]] && echo "${duration}|${COMMAND_DURATION_PROMPT_COLOR}"
}

function __powerline_left_segment() {
	local params
	IFS="|" read -ra params <<< "${1}"
	local pad_before_segment=" "

	if [[ "${SEGMENTS_AT_LEFT}" -eq 0 ]]; then
		if [[ "${POWERLINE_COMPACT_BEFORE_FIRST_SEGMENT}" -ne 0 ]]; then
			pad_before_segment=""
		fi
	else
		if [[ "${POWERLINE_COMPACT_AFTER_SEPARATOR}" -ne 0 ]]; then
			pad_before_segment=""
		fi
		# Since the previous segment wasn't the last segment, add padding, if needed
		#
		if [[ "${POWERLINE_COMPACT_BEFORE_SEPARATOR}" -eq 0 ]]; then
			LEFT_PROMPT+="$(set_color - "${LAST_SEGMENT_COLOR}") ${normal}"
		fi
		if [[ "${LAST_SEGMENT_COLOR}" -eq "${params[1]}" ]]; then
			LEFT_PROMPT+="$(set_color - "${LAST_SEGMENT_COLOR}")${POWERLINE_LEFT_SEPARATOR_SOFT}${normal}"
		else
			LEFT_PROMPT+="$(set_color "${LAST_SEGMENT_COLOR}" "${params[1]}")${POWERLINE_LEFT_SEPARATOR}${normal}"
		fi
	fi

	LEFT_PROMPT+="$(set_color - "${params[1]}")${pad_before_segment}${params[0]}${normal}"
	LAST_SEGMENT_COLOR=${params[1]}
	((SEGMENTS_AT_LEFT += 1))
}

function __powerline_left_last_segment_padding() {
	LEFT_PROMPT+="$(set_color - "${LAST_SEGMENT_COLOR}") ${normal}"
}

function __powerline_last_status_prompt() {
	[[ "$1" -ne 0 ]] && echo "${1}|${LAST_STATUS_THEME_PROMPT_COLOR}"
}

function __powerline_prompt_command() {
	local last_status="$?" ## always the first
	local separator_char="${POWERLINE_PROMPT_CHAR}"

	LEFT_PROMPT=""
	SEGMENTS_AT_LEFT=0
	LAST_SEGMENT_COLOR=""

	if [[ -n "${POWERLINE_PROMPT_DISTRO_LOGO}" ]]; then
		LEFT_PROMPT+="$(set_color "${PROMPT_DISTRO_LOGO_COLOR}" "${PROMPT_DISTRO_LOGO_COLORBG}")${PROMPT_DISTRO_LOGO}$(set_color - -)"
	fi

	## left prompt ##
	for segment in $POWERLINE_PROMPT; do
		local info="$(__powerline_"${segment}"_prompt)"
		[[ -n "${info}" ]] && __powerline_left_segment "${info}"
	done

	[[ "${last_status}" -ne 0 ]] && __powerline_left_segment "$(__powerline_last_status_prompt ${last_status})"

	if [[ -n "${LEFT_PROMPT}" ]] && [[ "${POWERLINE_COMPACT_AFTER_LAST_SEGMENT}" -eq 0 ]]; then
		__powerline_left_last_segment_padding
	fi

	# By default we try to match the prompt to the adjacent segment's background color,
	# but when part of the prompt exists within that segment, we instead match the foreground color.
	local prompt_color="$(set_color "${LAST_SEGMENT_COLOR}" -)"
	if [[ -n "${LEFT_PROMPT}" ]] && [[ -n "${POWERLINE_LEFT_LAST_SEGMENT_PROMPT_CHAR}" ]]; then
		LEFT_PROMPT+="$(set_color - "${LAST_SEGMENT_COLOR}")${POWERLINE_LEFT_LAST_SEGMENT_PROMPT_CHAR}"
		prompt_color="${normal}"
	fi
	[[ -n "${LEFT_PROMPT}" ]] && LEFT_PROMPT+="${prompt_color}${separator_char}${normal}"

	if [[ "${POWERLINE_COMPACT_PROMPT}" -eq 0 ]]; then
		LEFT_PROMPT+=" "
	fi

	PS1="${LEFT_PROMPT}"

	## cleanup ##
	unset LAST_SEGMENT_COLOR \
		LEFT_PROMPT \
		SEGMENTS_AT_LEFT
}