#!/usr/bin/env bash
#
# Author: Dmitry Razumov <asmeron@ublinux.com>
# Copyright (c) 2021-2025 UBLinux <support@ublinux.com>
#
# Initial script for Linux UBLinux
# This script are launching before starting init from initrd script
# Current dir allways must be set to root (/)
# All system path must be relative, except initrd dirs

ENABLED=yes
[[ ${ENABLED} == "yes" ]] || exit 0
DEBUGMODE=no

PATH=.:/:/usr/bin:/usr/local/bin:/usr/local/sbin

[[ -d /usr/lib/ublinux ]] && { ROOTFS= ; CMD_CHROOT= ; } || { [[ -d /sysroot ]] && ROOTFS="/sysroot" || ROOTFS="."; CMD_CHROOT="chroot ${ROOTFS}"; }
SOURCE=${ROOTFS}/usr/lib/ublinux/functions; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
SOURCE=${ROOTFS}/usr/lib/ublinux/default; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null || exit 0
debug_mode "$0" "$@"

SYSCONF="${ROOTFS}${SYSCONF}"
SOURCE=${SYSCONF}/config; [[ -f ${SOURCE} ]] && . ${SOURCE} 2>/dev/null
SOURCE=${SYSCONF}/video; [ -f ${SOURCE} ] && . ${SOURCE} 2>/dev/null

exec_xorg_dpi(){
    FILE_LIGHTDM_GTK_GREATER_CONF="${ROOTFS}/etc/lightdm/lightdm-gtk-greeter.conf.d/100-hidpi-ubconfig.conf"
    rm -f ${FILE_LIGHTDM_GTK_GREATER_CONF}

    if [[ -n ${XORG_DPI} ]]; then
    ## Настрока XOrg DPI
        GDK_SCALE=1
        GDK_DPI_SCALE=0
        ELM_SCALE=1				# Масштабирование для UI Elementary
        QT_FONT_DPI=96				#
        PLASMA_USE_QT_SCALING=0		        # Разрешить Plasma использовать настройки QT по масштабированию
        #QT_AUTO_SCREEN_SCALE_FACTOR=0		# Автоматическое масштабирование, отключать при масштабировании вручную
        #QT_SCALE_FACTOR=2			# Масштабирование вручную, глобально для всех экранов
        #QT_SCREEN_SCALE_FACTORS="2;2;2;2"	# Масштабирование вручную для каждого экрана
	if [[ ${XORG_DPI} == @(no|disable) ]]; then
	    grep -q "^\s*GDK_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*GDK_SCALE=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    grep -q "^\s*GDK_DPI_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*GDK_DPI_SCALE=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    grep -q "^\s*ELM_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*ELM_SCALE=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    grep -q "^\s*QT_FONT_DPI=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*QT_FONT_DPI=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    grep -q "^\s*PLASMA_USE_QT_SCALING=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*PLASMA_USE_QT_SCALING=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    #grep -q "^\s*QT_AUTO_SCREEN_SCALE_FACTOR=" ${ROOTFS}/etc/environment 2>/dev/null && grep -v "^\s*QT_AUTO_SCREEN_SCALE_FACTOR=" ${ROOTFS}/etc/environment > ${ROOTFS}/etc/environment
	    return 0
	elif [[ ${XORG_DPI} == auto ]]; then
	    XORG_DPI=192
	fi

	if [[ ${XORG_DPI} == @(192|4K) ]]; then
	    XORG_DPI=192
	    GDK_SCALE=2
	    GDK_DPI_SCALE=0.5
	    ELM_SCALE=1.5
	    LIGHTDM_CURSOR_MOUSE=48
	    QT_FONT_DPI=192
	    PLASMA_USE_QT_SCALING=1
	    #QT_AUTO_SCREEN_SCALE_FACTOR=1
	elif [[ ${XORG_DPI} == @(144|2K) ]]; then
	    XORG_DPI=144
	    GDK_SCALE=2
	    GDK_DPI_SCALE=0.5
	    ELM_SCALE=1.5
	    LIGHTDM_CURSOR_MOUSE=32
	    QT_FONT_DPI=144
	    PLASMA_USE_QT_SCALING=1
	    #QT_AUTO_SCREEN_SCALE_FACTOR=1
	fi
	grep -q "^\s*GDK_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null \
	    && sed -E "s/^\s*(GDK_SCALE=).*/\1${GDK_SCALE}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	    || sed -e '$a\' -e "GDK_SCALE=${GDK_SCALE}" -i ${ROOTFS}/etc/environment 2>/dev/null
	grep -q "^\s*GDK_DPI_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null \
	    && sed -E "s/^\s*(GDK_DPI_SCALE=).*/\1${GDK_DPI_SCALE}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	    || sed -e '$a\' -e "GDK_DPI_SCALE=${GDK_DPI_SCALE}" -i ${ROOTFS}/etc/environment 2>/dev/null
	grep -q "^\s*ELM_SCALE=" ${ROOTFS}/etc/environment 2>/dev/null \
	    && sed -E "s/^\s*(ELM_SCALE=).*/\1${ELM_SCALE}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	    || sed -e '$a\' -e "ELM_SCALE=${ELM_SCALE}" -i ${ROOTFS}/etc/environment 2>/dev/null
	grep -q "^\s*QT_FONT_DPI=" ${ROOTFS}/etc/environment 2>/dev/null \
	    && sed -E "s/^\s*(QT_FONT_DPI=).*/\1${QT_FONT_DPI}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	    || sed -e '$a\' -e "QT_FONT_DPI=${QT_FONT_DPI}" -i ${ROOTFS}/etc/environment 2>/dev/null
	grep -q "^\s*PLASMA_USE_QT_SCALING=" ${ROOTFS}/etc/environment 2>/dev/null \
	    && sed -E "s/^\s*(PLASMA_USE_QT_SCALING=).*/\1${PLASMA_USE_QT_SCALING}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	    || sed -e '$a\' -e "PLASMA_USE_QT_SCALING=${PLASMA_USE_QT_SCALING}" -i ${ROOTFS}/etc/environment 2>/dev/null
	#grep -q "^\s*QT_AUTO_SCREEN_SCALE_FACTOR=" ${ROOTFS}/etc/environment 2>/dev/null \
	#    && sed -E "s/^\s*(QT_AUTO_SCREEN_SCALE_FACTOR=).*/\1${QT_AUTO_SCREEN_SCALE_FACTOR}/" -i ${ROOTFS}/etc/environment 2>/dev/null \
	#    || sed -e '$a\' -e "QT_AUTO_SCREEN_SCALE_FACTOR=${QT_AUTO_SCREEN_SCALE_FACTOR}" -i ${ROOTFS}/etc/environment 2>/dev/null
	## Настрока Lightdm DPI
	if [[ -d ${ROOTFS}/etc/lightdm ]]; then
	    [[ -d ${FILE_LIGHTDM_GTK_GREATER_CONF%/*} ]] || mkdir -p "${FILE_LIGHTDM_GTK_GREATER_CONF%/*}"
	    cat <<EOF > "${FILE_LIGHTDM_GTK_GREATER_CONF}"
[greeter]
    cursor-theme-size = ${LIGHTDM_CURSOR_MOUSE}
    xft-antialias = true
    xft-dpi = ${XORG_DPI}
    xft-hintstyle = hintfull
    xft-rgba = vrgb
EOF
	fi
    fi
}

################
##### MAIN #####
################

    exec_xorg_dpi $@