Ashark/davinci-resolve PKGBUILD

## davinci-resolve PKGBUILD
# Maintainer: Alex S. <shantanna_at_hotmail_dot_com>
# Contributor: Jonathon Fernyhough <jonathon_at_manjaro_dot_org>
# Contributor: Andrew Shark <ashark#linuxcomp.ru>

# Hardware support is limited.
# See https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=56878&p=456990#p456924

pkgname=davinci-resolve
_pkgname=resolve
pkgver=15.2.3
pkgrel=2
pkgdesc='Professional A/V post-production software suite from Blackmagic Design'
arch=('x86_64')
url="https://www.blackmagicdesign.com/"
license=('Commercial')
depends=('glu' 'gtk2' 'gstreamer' 'libpng12' 'lib32-libpng12' 'ocl-icd' 'openssl-1.0'
         'opencl-driver' 'qt4' 'qt5-base' 'qt5-svg' 'qt5-webkit'
         'qt5-webengine' 'qt5-websockets')
# TODO check that all of these needed. Also explore `ldd ./installer` and `ldd resolve`.
makedepends=('libarchive')
options=('!strip')
install=${pkgname}.install
conflicts=('davinci-resolve-beta' 'davinci-resolve-studio' 'davinci-resolve-studio-beta')

# This was originally written by Daniel Bermond in blackmagic-decklink-sdk pkgbuild
# It is sufficient to just replace _downloadid to correspond new release version
# It can be obtained from chromium -> Developer Tools -> Network -> XHR and Fetch -> the next one after latest-version
_downloadid='89633cfa41e142c9bdc1724fbb5ff873' # dr 15.2.3
_referid='4f929ebb222c4ce68567cbe38d735ffe'
_srcurl="https://www.blackmagicdesign.com/api/register/us/download/${_downloadid}"

source=("DaVinci_Resolve_${pkgver}_Linux.zip"::"$_srcurl")
sha256sums=('d0123739c68b3b03565a1478625a3ebafbb067eb5631a7c7b0a41726f5d5c854')

_useragent="User-Agent: Mozilla/5.0 (X11; Linux ${CARCH}) \
                        AppleWebKit/537.36 (KHTML, like Gecko) \
                        Chrome/70.0.3538.77 \
                        Safari/537.36"

_reqjson="{ \
    \"platform\": \"Linux\", \
    \"country\": \"us\", \
    \"firstname\": \"Arch\", \
    \"lastname\": \"Linux\", \
    \"email\": \"someone@archlinux.org\", \
    \"phone\": \"202-555-0194\", \
    \"state\": \"New York\", \
    \"city\": \"AUR\", \
    \"hasAgreedToTerms\": true, \
    \"product\": \"Desktop Video ${pkgver} SDK\" \
}"

_reqjson="$(  printf '%s' "$_reqjson"   | sed 's/[[:space:]]\+/ /g')"
_useragent="$(printf '%s' "$_useragent" | sed 's/[[:space:]]\+/ /g')"
_useragent_escaped="${_useragent// /\\ }"

DLAGENTS=("https::/usr/bin/curl \
              -gqb '' -C - --retry 3 --retry-delay 3 \
              -H Host:\ sw.blackmagicdesign.com \
              -H Upgrade-Insecure-Requests:\ 1 \
              -H ${_useragent_escaped} \
              -H Accept:\ text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 \
              -H Accept-Language:\ en-US,en;q=0.9 \
              -o %o \
              --compressed \
              $(curl \
                  -s \
                  -H 'Host: www.blackmagicdesign.com' \
                  -H 'Accept: application/json, text/plain, */*' \
                  -H 'Origin: https://www.blackmagicdesign.com' \
                  -H "$_useragent" \
                  -H 'Content-Type: application/json;charset=UTF-8' \
                  -H "Referer: https://www.blackmagicdesign.com/support/download/${_referid}/Linux" \
                  -H 'Accept-Encoding: gzip, deflate, br' \
                  -H 'Accept-Language: en-US,en;q=0.9' \
                  -H 'Authority: www.blackmagicdesign.com' \
                  -H 'Cookie: _ga=GA1.2.1849503966.1518103294; _gid=GA1.2.953840595.1518103294' \
                  --data-binary "$_reqjson" \
                  --compressed \
                  "$_srcurl"
              )"
)

PKGEXT=".pkg.tar" # for maintainers

# Order of the official installation procedure:
# You download .zip from blackmagicdesign site.
# Then you unpack it. Two files are inside: pdf and run.
# In pdf there is a link to dedicated centos iso installer with dr, which we may use for tests.
# .run file is actually AppImage. It starts AppRun file, which calls "installer" executable.
# For some reason they made it binary, so we cannot see what else it does. But here is order of its actions:
# - run scripts/pre_install.sh
# - copy all files except AppRun and .DirIcon to /opt/resolve
# - run scripts/post_install.sh
# So this pkgbuild is remake of these actions.

prepare() {
    rm -rf "${srcdir}/unpacked" # to prevent removed from distribution files to be copied to new versions builds
    mkdir -p "${srcdir}"/unpacked
    bsdtar x -f DaVinci_Resolve_${pkgver}_Linux.run -C "${srcdir}"/unpacked
}

package() {

# pre_install.sh reimplementation start
    INSTALL_DIR="${pkgdir}"/opt/resolve
    # USER_UID=0
    # USER_HOME="${pkgdir}"/root

    # Installing Resolve as root may cause issues with file permissions when running Resolve as a non-root user. # from pdf manual. Check for correctness.
    # mkdir -m 0775 -p "$INSTALL_DIR" # this is from original script
    # chown $USER_UID "$INSTALL_DIR" -R # this is from original script
    # We will instead give 777 permissions to specific dirs to allow users to write there but deny touching package files
    # Alternatively, we could require user to be in users group and change group of files/dirs to users to allow writing
    mkdir -p "$INSTALL_DIR"
    # Permissions tweaks are done below
# pre_install.sh reimplementation end

# ./installer reimplementation start
    cp -rpT "${srcdir}"/unpacked "${pkgdir}/opt/resolve"
    rm "${pkgdir}"/opt/resolve/{AppRun,.DirIcon,installer,installer.dat,filelist.txt}
    rm "${pkgdir}"/opt/resolve/graphics/watermark.png # clutter used by gui installer
    rm "${pkgdir}"/opt/resolve/docs/Welcome.txt # clutter used by gui installer
    rm "${pkgdir}"/opt/resolve/scripts/{pre_install.sh,post_install.sh,uninstall.sh,script.update} # not needed
# ./installer reimplementation end

# post_install.sh reimplementation start
    # COMMON_DATA_DIR=/var/davinci/resolve # never used
    RESOLVE_APP_NAME=com.blackmagicdesign.resolve
    # DBUS_SERVICE_DIR=/usr/share/dbus-1/services # never used

    FILES=(
            "${pkgdir}"/opt/resolve/share/DaVinciResolve.desktop
            "${pkgdir}"/opt/resolve/share/DaVinciResolveInstaller.desktop
            "${pkgdir}"/opt/resolve/share/DaVinciResolveCaptureLogs.desktop
            "${pkgdir}"/opt/resolve/share/DaVinciResolvePanelSetup.desktop
            "${pkgdir}"/opt/resolve/share/DaVinciResolve.directory
            "${pkgdir}"/opt/resolve/share/DaVinciResolve.menu
           )
    ABSOLUTE_INSTALL_DIR="/opt/resolve"
    for file in "${FILES[@]}"; do
        sed -i -e "s:RESOLVE_INSTALL_LOCATION:${ABSOLUTE_INSTALL_DIR}:g" "$file"
    done

    mkdir -p "${pkgdir}"/usr/share/applications/
    mkdir -p "${pkgdir}"/usr/share/desktop-directories/
    mkdir -p "${pkgdir}"/etc/xdg/menus/applications-merged

    mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop
    sed -i 's/Revolutionary new tools for editing, visual effects, color correction and professional audio post production, all in a single application!/Professional non-linear editing/g' "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop # my own patch
    echo "Categories=AudioVideo;AudioVideoEditing;" >> "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop # my own patch
    rm "${pkgdir}"/opt/resolve/share/DaVinciResolveInstaller.desktop
    rm "${pkgdir}"/opt/resolve/graphics/DV_Uninstall.png
    mv "${pkgdir}"/opt/resolve/share/DaVinciResolveCaptureLogs.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}-CaptureLogs.desktop
    mv "${pkgdir}"/opt/resolve/share/DaVinciResolvePanelSetup.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}-Panels.desktop
    mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.directory "${pkgdir}"/usr/share/desktop-directories/${RESOLVE_APP_NAME}.directory
    mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.menu "${pkgdir}"/etc/xdg/menus/applications-merged/${RESOLVE_APP_NAME}.menu
    sed -i 's/<Filename>com.blackmagicdesign.resolve-Installer.desktop<\/Filename>//g' "${pkgdir}"/etc/xdg/menus/applications-merged/${RESOLVE_APP_NAME}.menu

    mkdir -p "${pkgdir}"/usr/share/icons/hicolor/128x128
    mkdir -p "${pkgdir}"/usr/share/mime/packages
    XDG_DATA_DIRS="${pkgdir}"/usr/share
    xdg-icon-resource install --size 128 "${INSTALL_DIR}"/graphics/DV_Resolve.png DaVinci-Resolve
    xdg-icon-resource install --size 128 "${INSTALL_DIR}"/graphics/DV_ResolveProj.png DaVinci-ResolveProj

    xdg-icon-resource install --size 128 --context mimetypes "${INSTALL_DIR}"/graphics/DV_ResolveProj.png application-x-resolveproj
    # xdg-mime install --novendor "${INSTALL_DIR}"/share/resolve.xml # not needed, handled by pacman
    # instead we just copy resolve.xml
    cp "${INSTALL_DIR}"/share/resolve.xml "${pkgdir}"/usr/share/mime/packages


    mkdir -p "${pkgdir}"/usr/lib/udev/rules.d/
    echo 'SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="096e", MODE="0666"' > "${pkgdir}"/usr/lib/udev/rules.d/75-davincipanel.rules
    echo 'SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="1edb", MODE="0666"' > "${pkgdir}"/usr/lib/udev/rules.d/75-sdx.rules

    PANEL_DRIVER_DIR="${pkgdir}/usr/lib"
    mkdir -p "${pkgdir}"/usr/lib # already created in udev rules, but just to be sure
    tar -xf "${INSTALL_DIR}"/share/panels/dvpanel-framework-linux-x86_64.tgz libDaVinciPanelAPI.so # I have not used a lib folder from archive
    mv libDaVinciPanelAPI.so "${PANEL_DRIVER_DIR}"
    rm "${INSTALL_DIR}"/share/panels/dvpanel-framework-linux-x86_64.tgz

    # From original:
    # # We install the default app associations here, because xdg-mime is buggy in centos6
    # install_default_application ${RESOLVE_APP_NAME}.desktop application/x-resolveproj
    # # We install the default application system-wide. Per user default-app preferences are buggy for Centos6
    # install_default_application()
    # {
    # $1 is .desktop
    # $2 is mime/type
    # DEFAULT_MIME_FILE="/usr/share/applications/defaults.list"
    #     grep -v "$2=" $DEFAULT_MIME_FILE > ${DEFAULT_MIME_FILE}.new 2> /dev/null
    #     if ! grep "[Default Applications]" ${DEFAULT_MIME_FILE}.new > /dev/null; then
    #     echo "[Default Applications]" >> ${DEFAULT_MIME_FILE}.new
    #     fi
    #     echo $2=$1 >> ${DEFAULT_MIME_FILE}.new
    #     mv ${DEFAULT_MIME_FILE}.new $DEFAULT_MIME_FILE
    # }
    #
    # We do not need this defaults.list in Arch, because it is deprecated and out of current desktop spec.
    # See this: https://specifications.freedesktop.org/mime-apps-spec/latest/

    # This is from original script
    #     LIST_OF_USER_FILES=(
    #         "configs"
    #         "easyDCP"
    #         "logs"
    #         "Developer"
    #         "DolbyVision"
    #         "LUT"
    #         ".LUT"
    #         ".license"
    #         ".crashreport"
    #         "Resolve Disk Database"
    #         "Fairlight"
    #         "Media"
    #         )
    #
    #     for file in "${LIST_OF_USER_FILES[@]}"; do
    #         mkdir -p -m 0775 "$INSTALL_DIR/$file"
    #         chown $USER_UID "$INSTALL_DIR/$file"
    #     done

    # This is ours
    # We will create dirs, to which dr wants to write and allow everybody to write there
    # I have added only directories, that I am sure dr really wants to write to.
    # If you notice that dr unable to write to some dir, please contact maintainer and he will add it to writable dirs.
    LIST_OF_WRITABLE_DIRS=(
        "configs" # needed
      # "easyDCP"
        "logs" # needed
      # "Developer"
      # "DolbyVision"
        "LUT" # needed
        ".LUT" # needed
      # ".license"
      # ".crashreport"
        "Resolve Disk Database" # needed
        "Fairlight" # needed
        "Media" # not necessary, but can be used
    )
    for dir in "${LIST_OF_WRITABLE_DIRS[@]}"; do
        mkdir -m 0777 -p "${pkgdir}/opt/${_pkgname}/$dir"
    done
    # to actually watch what else files dr may create, we need to allow it to create files in install dir.
    # chmod 777 "${pkgdir}/opt/${_pkgname}" # for maintainers

    backup=( opt/resolve/configs/config.dat
             opt/resolve/configs/log-conf.xml
             opt/resolve/DolbyVision/config.bin )
    # We will keep default configs in unwritable share for simplicity of restoring. See restore-opt-resolve.sh
    cp "${INSTALL_DIR}"/share/default-config-linux.dat "${INSTALL_DIR}"/configs/config.dat
    chmod 777 "${INSTALL_DIR}"/configs/config.dat # allow write to normal user
    cp "${INSTALL_DIR}"/share/log-conf.xml "${INSTALL_DIR}"/configs/log-conf.xml
    chmod 777  "${INSTALL_DIR}"/configs/log-conf.xml # allow write to normal user
    mkdir "${INSTALL_DIR}"/DolbyVision
    cp "${INSTALL_DIR}"/share/default_cm_config.bin "${INSTALL_DIR}"/DolbyVision/config.bin
    chmod 777  "${INSTALL_DIR}"/DolbyVision/config.bin # allow write to normal user
# post_install.sh reimplementation end

    # for simplicity of launching I'll create symlink
    mkdir "${pkgdir}"/usr/bin/
    ln -s "/opt/resolve/bin/resolve" "${pkgdir}"/usr/bin/davinci-resolve

# export BMD_PLUGIN_PATH=$CURRENT_DIR/libs/plugins # from AppRun, used by ./installer. Do not know its effect.
}

## davinci-resolve.install

pre_install() {
    # From pre_install.sh
    # uninstall_legacy_bmdPanelDaemon()
    # {
    # 	# Uninstall BMD panel daemon
    # 	SVC_NAME=bmdpaneld
    #
    # 	# Kill the daemon in case it is running
    # 	killall -9 ${SVC_NAME}
    #
    # 	if [ -f /etc/init.d/${SVC_NAME} ]; then
    # 		echo "#Uninstalling BMD panel service..."
    # 		service ${SVC_NAME} stop
    # 		/sbin/chkconfig --del ${SVC_NAME}
    # 		rm -f /etc/init.d/${SVC_NAME}
    # 	fi
    # }
    # uninstall_legacy_bmdPanelDaemon
    #
    # I've commented this out, in case such service could be provided by any package in Arch
    # There is bmdpaneld file in /opt/resolve/bin/, but I do not know when it is invoked
    # systemctl stop bmdpaneld

    if [ -d "/opt/resolve" ]; then
        echo "Setting 755 mode for /opt/resolve"
        chmod 755 "/opt/resolve" # to deny renaming of writable dirs
    fi
}


# post_install() {
    # From post_install.sh install_mime_files()
    # gtk-update-icon-cache "/usr/share/icons/hicolor" -f 2>&1  >> /dev/null # not needed, handled by pacman
    # update-mime-database "/usr/share/mime/" 2>&1  >> /dev/null # not needed, handled by pacman

    # udevadm control --reload-rules #2>&1 # not needed, handled by pacman
    # udevadm trigger #2>&1 #  # not needed, handled by pacman

    # We do not need this, because usb permissions were already set in udev rules
    # ensure_usb_permissions()
    # {
    #     # Ensure panel permissions are correctly set for the current session
    #     DEVICES=`lsusb | grep "ID $1" | sed -e "s/:/ /g" | awk '{print"/dev/bus/usb/"$2"/"$4}'`
    #     for DEV in $DEVICES
    #     do
    #         echo "Fixing usb permissions for $DEV"
    #         chmod a+w $DEV
    #     done
    # }
    #
    # ensure_usb_permissions "1edb"
    # ensure_usb_permissions "096e"
# }


pre_upgrade() {
    pre_install
}


# post_upgrade() {
#     post_install
# }


#pre_remove() {
#     do something here
#}


post_remove() {
    # From uninstall.sh
    # xdg-mime uninstall --novendor "${INSTALL_DIR}/share/resolve.xml"  2>&1  >> /dev/null # not needed, handled by pacman
    # xdg-icon-resource uninstall --size 128 DaVinci-Resolve  2>&1  >> /dev/null # not needed, removed with package
    # xdg-icon-resource uninstall --size 128 DaVinci-ResolveProj  2>&1  >> /dev/null # not needed, removed with package
    # gtk-update-icon-cache "${SHARE_DIR}/icons/hicolor" -f 2>&1  >> /dev/null # not needed, handled by pacman
    # update-mime-database "${SHARE_DIR}/mime/" 2>&1  >> /dev/null # not needed, handled by pacman

    # Remove GPUCache dir, because it did not came with package. This is done in original uninstaller.
    rm -rvf "/opt/resolve/GPUCache"

    if [ -d "/opt/resolve" ]; then
        echo "Setting 777 mode for /opt/resolve" # not possible in install file?
        chmod 777 "/opt/resolve" # to allow to rm files from install dir
        echo "You may need to remove /opt/resolve manually"
    fi
}

## restore-opt-resolve.sh
#!/bin/bash
# Remove all user files, then restore default configs.
# Allows to get state of just installed package without actually reinstalling.
# For maintainers only, users do not need this file.

show_out_of_package_files() {
    find -L /opt/resolve \( -type d -printf "%p/\n" , -type f -print \) | sort > /tmp/current-files.txt
    # sort filelist.txt > filelist_sorted.txt
    pacman -Ql davinci-resolve | grep "/opt/resolve" | sed -r 's/^davinci-resolve //' | sort > /tmp/package-files.txt
    diff /tmp/package-files.txt /tmp/current-files.txt | grep -v "^[0-9c0-9]"
}

remove_out_of_package_files() {
    for file in `show_out_of_package_files | grep "> " | sed -r 's/^> //'`
    do
        rm -rfv $file
    done
}

remove_out_of_package_files

echo -e "Remaining out of package files:\n$(show_out_of_package_files)"

restore_configs() {
    echo Restoring default configs
    rm -v "/opt/resolve/configs/config.dat"
    rm -v "/opt/resolve/configs/log-conf.xml"
    rm -v "/opt/resolve/DolbyVision/config.bin"
    # files will not be owned by root, but it does not matter
    cp -v "/opt/resolve/share/default-config-linux.dat" "/opt/resolve/configs/config.dat"
    cp -v "/opt/resolve/share/log-conf.xml" "/opt/resolve/configs/log-conf.xml"
    cp -v "/opt/resolve/share/default_cm_config.bin" "/opt/resolve/DolbyVision/config.bin"
}

restore_configs
	# Maintainer: Alex S. <shantanna_at_hotmail_dot_com>
	# Contributor: Jonathon Fernyhough <jonathon_at_manjaro_dot_org>
	# Contributor: Andrew Shark <ashark#linuxcomp.ru>

	# Hardware support is limited.
	# See https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=56878&p=456990#p456924

	pkgname=davinci-resolve
	_pkgname=resolve
	pkgver=15.2.3
	pkgrel=2
	pkgdesc='Professional A/V post-production software suite from Blackmagic Design'
	arch=('x86_64')
	url="https://www.blackmagicdesign.com/"
	license=('Commercial')
	depends=('glu' 'gtk2' 'gstreamer' 'libpng12' 'lib32-libpng12' 'ocl-icd' 'openssl-1.0'
	'opencl-driver' 'qt4' 'qt5-base' 'qt5-svg' 'qt5-webkit'
	'qt5-webengine' 'qt5-websockets')
	# TODO check that all of these needed. Also explore `ldd ./installer` and `ldd resolve`.
	makedepends=('libarchive')
	options=('!strip')
	install=${pkgname}.install
	conflicts=('davinci-resolve-beta' 'davinci-resolve-studio' 'davinci-resolve-studio-beta')

	# This was originally written by Daniel Bermond in blackmagic-decklink-sdk pkgbuild
	# It is sufficient to just replace _downloadid to correspond new release version
	# It can be obtained from chromium -> Developer Tools -> Network -> XHR and Fetch -> the next one after latest-version
	_downloadid='89633cfa41e142c9bdc1724fbb5ff873' # dr 15.2.3
	_referid='4f929ebb222c4ce68567cbe38d735ffe'
	_srcurl="https://www.blackmagicdesign.com/api/register/us/download/${_downloadid}"

	source=("DaVinci_Resolve_${pkgver}_Linux.zip"::"$_srcurl")
	sha256sums=('d0123739c68b3b03565a1478625a3ebafbb067eb5631a7c7b0a41726f5d5c854')

	_useragent="User-Agent: Mozilla/5.0 (X11; Linux ${CARCH}) \
	AppleWebKit/537.36 (KHTML, like Gecko) \
	Chrome/70.0.3538.77 \
	Safari/537.36"

	_reqjson="{ \
	\"platform\": \"Linux\", \
	\"country\": \"us\", \
	\"firstname\": \"Arch\", \
	\"lastname\": \"Linux\", \
	\"email\": \"someone@archlinux.org\", \
	\"phone\": \"202-555-0194\", \
	\"state\": \"New York\", \
	\"city\": \"AUR\", \
	\"hasAgreedToTerms\": true, \
	\"product\": \"Desktop Video ${pkgver} SDK\" \
	}"

	_reqjson="$( printf '%s' "$_reqjson" \| sed 's/[[:space:]]\+/ /g')"
	_useragent="$(printf '%s' "$_useragent" \| sed 's/[[:space:]]\+/ /g')"
	_useragent_escaped="${_useragent// /\\ }"

	DLAGENTS=("https::/usr/bin/curl \
	-gqb '' -C - --retry 3 --retry-delay 3 \
	-H Host:\ sw.blackmagicdesign.com \
	-H Upgrade-Insecure-Requests:\ 1 \
	-H ${_useragent_escaped} \
	-H Accept:\ text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8 \
	-H Accept-Language:\ en-US,en;q=0.9 \
	-o %o \
	--compressed \
	$(curl \
	-s \
	-H 'Host: www.blackmagicdesign.com' \
	-H 'Accept: application/json, text/plain, /' \
	-H 'Origin: https://www.blackmagicdesign.com' \
	-H "$_useragent" \
	-H 'Content-Type: application/json;charset=UTF-8' \
	-H "Referer: https://www.blackmagicdesign.com/support/download/${_referid}/Linux" \
	-H 'Accept-Encoding: gzip, deflate, br' \
	-H 'Accept-Language: en-US,en;q=0.9' \
	-H 'Authority: www.blackmagicdesign.com' \
	-H 'Cookie: _ga=GA1.2.1849503966.1518103294; _gid=GA1.2.953840595.1518103294' \
	--data-binary "$_reqjson" \
	--compressed \
	"$_srcurl"
	)"
	)

	PKGEXT=".pkg.tar" # for maintainers

	# Order of the official installation procedure:
	# You download .zip from blackmagicdesign site.
	# Then you unpack it. Two files are inside: pdf and run.
	# In pdf there is a link to dedicated centos iso installer with dr, which we may use for tests.
	# .run file is actually AppImage. It starts AppRun file, which calls "installer" executable.
	# For some reason they made it binary, so we cannot see what else it does. But here is order of its actions:
	# - run scripts/pre_install.sh
	# - copy all files except AppRun and .DirIcon to /opt/resolve
	# - run scripts/post_install.sh
	# So this pkgbuild is remake of these actions.

	prepare() {
	rm -rf "${srcdir}/unpacked" # to prevent removed from distribution files to be copied to new versions builds
	mkdir -p "${srcdir}"/unpacked
	bsdtar x -f DaVinci_Resolve_${pkgver}_Linux.run -C "${srcdir}"/unpacked
	}

	package() {

	# pre_install.sh reimplementation start
	INSTALL_DIR="${pkgdir}"/opt/resolve
	# USER_UID=0
	# USER_HOME="${pkgdir}"/root

	# Installing Resolve as root may cause issues with file permissions when running Resolve as a non-root user. # from pdf manual. Check for correctness.
	# mkdir -m 0775 -p "$INSTALL_DIR" # this is from original script
	# chown $USER_UID "$INSTALL_DIR" -R # this is from original script
	# We will instead give 777 permissions to specific dirs to allow users to write there but deny touching package files
	# Alternatively, we could require user to be in users group and change group of files/dirs to users to allow writing
	mkdir -p "$INSTALL_DIR"
	# Permissions tweaks are done below
	# pre_install.sh reimplementation end

	# ./installer reimplementation start
	cp -rpT "${srcdir}"/unpacked "${pkgdir}/opt/resolve"
	rm "${pkgdir}"/opt/resolve/{AppRun,.DirIcon,installer,installer.dat,filelist.txt}
	rm "${pkgdir}"/opt/resolve/graphics/watermark.png # clutter used by gui installer
	rm "${pkgdir}"/opt/resolve/docs/Welcome.txt # clutter used by gui installer
	rm "${pkgdir}"/opt/resolve/scripts/{pre_install.sh,post_install.sh,uninstall.sh,script.update} # not needed
	# ./installer reimplementation end

	# post_install.sh reimplementation start
	# COMMON_DATA_DIR=/var/davinci/resolve # never used
	RESOLVE_APP_NAME=com.blackmagicdesign.resolve
	# DBUS_SERVICE_DIR=/usr/share/dbus-1/services # never used

	FILES=(
	"${pkgdir}"/opt/resolve/share/DaVinciResolve.desktop
	"${pkgdir}"/opt/resolve/share/DaVinciResolveInstaller.desktop
	"${pkgdir}"/opt/resolve/share/DaVinciResolveCaptureLogs.desktop
	"${pkgdir}"/opt/resolve/share/DaVinciResolvePanelSetup.desktop
	"${pkgdir}"/opt/resolve/share/DaVinciResolve.directory
	"${pkgdir}"/opt/resolve/share/DaVinciResolve.menu
	)
	ABSOLUTE_INSTALL_DIR="/opt/resolve"
	for file in "${FILES[@]}"; do
	sed -i -e "s:RESOLVE_INSTALL_LOCATION:${ABSOLUTE_INSTALL_DIR}:g" "$file"
	done

	mkdir -p "${pkgdir}"/usr/share/applications/
	mkdir -p "${pkgdir}"/usr/share/desktop-directories/
	mkdir -p "${pkgdir}"/etc/xdg/menus/applications-merged

	mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop
	sed -i 's/Revolutionary new tools for editing, visual effects, color correction and professional audio post production, all in a single application!/Professional non-linear editing/g' "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop # my own patch
	echo "Categories=AudioVideo;AudioVideoEditing;" >> "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}.desktop # my own patch
	rm "${pkgdir}"/opt/resolve/share/DaVinciResolveInstaller.desktop
	rm "${pkgdir}"/opt/resolve/graphics/DV_Uninstall.png
	mv "${pkgdir}"/opt/resolve/share/DaVinciResolveCaptureLogs.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}-CaptureLogs.desktop
	mv "${pkgdir}"/opt/resolve/share/DaVinciResolvePanelSetup.desktop "${pkgdir}"/usr/share/applications/${RESOLVE_APP_NAME}-Panels.desktop
	mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.directory "${pkgdir}"/usr/share/desktop-directories/${RESOLVE_APP_NAME}.directory
	mv "${pkgdir}"/opt/resolve/share/DaVinciResolve.menu "${pkgdir}"/etc/xdg/menus/applications-merged/${RESOLVE_APP_NAME}.menu
	sed -i 's/<Filename>com.blackmagicdesign.resolve-Installer.desktop<\/Filename>//g' "${pkgdir}"/etc/xdg/menus/applications-merged/${RESOLVE_APP_NAME}.menu

	mkdir -p "${pkgdir}"/usr/share/icons/hicolor/128x128
	mkdir -p "${pkgdir}"/usr/share/mime/packages
	XDG_DATA_DIRS="${pkgdir}"/usr/share
	xdg-icon-resource install --size 128 "${INSTALL_DIR}"/graphics/DV_Resolve.png DaVinci-Resolve
	xdg-icon-resource install --size 128 "${INSTALL_DIR}"/graphics/DV_ResolveProj.png DaVinci-ResolveProj

	xdg-icon-resource install --size 128 --context mimetypes "${INSTALL_DIR}"/graphics/DV_ResolveProj.png application-x-resolveproj
	# xdg-mime install --novendor "${INSTALL_DIR}"/share/resolve.xml # not needed, handled by pacman
	# instead we just copy resolve.xml
	cp "${INSTALL_DIR}"/share/resolve.xml "${pkgdir}"/usr/share/mime/packages


	mkdir -p "${pkgdir}"/usr/lib/udev/rules.d/
	echo 'SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="096e", MODE="0666"' > "${pkgdir}"/usr/lib/udev/rules.d/75-davincipanel.rules
	echo 'SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="1edb", MODE="0666"' > "${pkgdir}"/usr/lib/udev/rules.d/75-sdx.rules

	PANEL_DRIVER_DIR="${pkgdir}/usr/lib"
	mkdir -p "${pkgdir}"/usr/lib # already created in udev rules, but just to be sure
	tar -xf "${INSTALL_DIR}"/share/panels/dvpanel-framework-linux-x86_64.tgz libDaVinciPanelAPI.so # I have not used a lib folder from archive
	mv libDaVinciPanelAPI.so "${PANEL_DRIVER_DIR}"
	rm "${INSTALL_DIR}"/share/panels/dvpanel-framework-linux-x86_64.tgz

	# From original:
	# # We install the default app associations here, because xdg-mime is buggy in centos6
	# install_default_application ${RESOLVE_APP_NAME}.desktop application/x-resolveproj
	# # We install the default application system-wide. Per user default-app preferences are buggy for Centos6
	# install_default_application()
	# {
	# $1 is .desktop
	# $2 is mime/type
	# DEFAULT_MIME_FILE="/usr/share/applications/defaults.list"
	# grep -v "$2=" $DEFAULT_MIME_FILE > ${DEFAULT_MIME_FILE}.new 2> /dev/null
	# if ! grep "[Default Applications]" ${DEFAULT_MIME_FILE}.new > /dev/null; then
	# echo "[Default Applications]" >> ${DEFAULT_MIME_FILE}.new
	# fi
	# echo $2=$1 >> ${DEFAULT_MIME_FILE}.new
	# mv ${DEFAULT_MIME_FILE}.new $DEFAULT_MIME_FILE
	# }
	#
	# We do not need this defaults.list in Arch, because it is deprecated and out of current desktop spec.
	# See this: https://specifications.freedesktop.org/mime-apps-spec/latest/

	# This is from original script
	# LIST_OF_USER_FILES=(
	# "configs"
	# "easyDCP"
	# "logs"
	# "Developer"
	# "DolbyVision"
	# "LUT"
	# ".LUT"
	# ".license"
	# ".crashreport"
	# "Resolve Disk Database"
	# "Fairlight"
	# "Media"
	# )
	#
	# for file in "${LIST_OF_USER_FILES[@]}"; do
	# mkdir -p -m 0775 "$INSTALL_DIR/$file"
	# chown $USER_UID "$INSTALL_DIR/$file"
	# done

	# This is ours
	# We will create dirs, to which dr wants to write and allow everybody to write there
	# I have added only directories, that I am sure dr really wants to write to.
	# If you notice that dr unable to write to some dir, please contact maintainer and he will add it to writable dirs.
	LIST_OF_WRITABLE_DIRS=(
	"configs" # needed
	# "easyDCP"
	"logs" # needed
	# "Developer"
	# "DolbyVision"
	"LUT" # needed
	".LUT" # needed
	# ".license"
	# ".crashreport"
	"Resolve Disk Database" # needed
	"Fairlight" # needed
	"Media" # not necessary, but can be used
	)
	for dir in "${LIST_OF_WRITABLE_DIRS[@]}"; do
	mkdir -m 0777 -p "${pkgdir}/opt/${_pkgname}/$dir"
	done
	# to actually watch what else files dr may create, we need to allow it to create files in install dir.
	# chmod 777 "${pkgdir}/opt/${_pkgname}" # for maintainers

	backup=( opt/resolve/configs/config.dat
	opt/resolve/configs/log-conf.xml
	opt/resolve/DolbyVision/config.bin )
	# We will keep default configs in unwritable share for simplicity of restoring. See restore-opt-resolve.sh
	cp "${INSTALL_DIR}"/share/default-config-linux.dat "${INSTALL_DIR}"/configs/config.dat
	chmod 777 "${INSTALL_DIR}"/configs/config.dat # allow write to normal user
	cp "${INSTALL_DIR}"/share/log-conf.xml "${INSTALL_DIR}"/configs/log-conf.xml
	chmod 777 "${INSTALL_DIR}"/configs/log-conf.xml # allow write to normal user
	mkdir "${INSTALL_DIR}"/DolbyVision
	cp "${INSTALL_DIR}"/share/default_cm_config.bin "${INSTALL_DIR}"/DolbyVision/config.bin
	chmod 777 "${INSTALL_DIR}"/DolbyVision/config.bin # allow write to normal user
	# post_install.sh reimplementation end

	# for simplicity of launching I'll create symlink
	mkdir "${pkgdir}"/usr/bin/
	ln -s "/opt/resolve/bin/resolve" "${pkgdir}"/usr/bin/davinci-resolve

	# export BMD_PLUGIN_PATH=$CURRENT_DIR/libs/plugins # from AppRun, used by ./installer. Do not know its effect.
	}

	pre_install() {
	# From pre_install.sh
	# uninstall_legacy_bmdPanelDaemon()
	# {
	# # Uninstall BMD panel daemon
	# SVC_NAME=bmdpaneld
	#
	# # Kill the daemon in case it is running
	# killall -9 ${SVC_NAME}
	#
	# if [ -f /etc/init.d/${SVC_NAME} ]; then
	# echo "#Uninstalling BMD panel service..."
	# service ${SVC_NAME} stop
	# /sbin/chkconfig --del ${SVC_NAME}
	# rm -f /etc/init.d/${SVC_NAME}
	# fi
	# }
	# uninstall_legacy_bmdPanelDaemon
	#
	# I've commented this out, in case such service could be provided by any package in Arch
	# There is bmdpaneld file in /opt/resolve/bin/, but I do not know when it is invoked
	# systemctl stop bmdpaneld

	if [ -d "/opt/resolve" ]; then
	echo "Setting 755 mode for /opt/resolve"
	chmod 755 "/opt/resolve" # to deny renaming of writable dirs
	fi
	}


	# post_install() {
	# From post_install.sh install_mime_files()
	# gtk-update-icon-cache "/usr/share/icons/hicolor" -f 2>&1 >> /dev/null # not needed, handled by pacman
	# update-mime-database "/usr/share/mime/" 2>&1 >> /dev/null # not needed, handled by pacman

	# udevadm control --reload-rules #2>&1 # not needed, handled by pacman
	# udevadm trigger #2>&1 # # not needed, handled by pacman

	# We do not need this, because usb permissions were already set in udev rules
	# ensure_usb_permissions()
	# {
	# # Ensure panel permissions are correctly set for the current session
	# DEVICES=`lsusb \| grep "ID $1" \| sed -e "s/:/ /g" \| awk '{print"/dev/bus/usb/"$2"/"$4}'`
	# for DEV in $DEVICES
	# do
	# echo "Fixing usb permissions for $DEV"
	# chmod a+w $DEV
	# done
	# }
	#
	# ensure_usb_permissions "1edb"
	# ensure_usb_permissions "096e"
	# }


	pre_upgrade() {
	pre_install
	}


	# post_upgrade() {
	# post_install
	# }


	#pre_remove() {
	# do something here
	#}


	post_remove() {
	# From uninstall.sh
	# xdg-mime uninstall --novendor "${INSTALL_DIR}/share/resolve.xml" 2>&1 >> /dev/null # not needed, handled by pacman
	# xdg-icon-resource uninstall --size 128 DaVinci-Resolve 2>&1 >> /dev/null # not needed, removed with package
	# xdg-icon-resource uninstall --size 128 DaVinci-ResolveProj 2>&1 >> /dev/null # not needed, removed with package
	# gtk-update-icon-cache "${SHARE_DIR}/icons/hicolor" -f 2>&1 >> /dev/null # not needed, handled by pacman
	# update-mime-database "${SHARE_DIR}/mime/" 2>&1 >> /dev/null # not needed, handled by pacman

	# Remove GPUCache dir, because it did not came with package. This is done in original uninstaller.
	rm -rvf "/opt/resolve/GPUCache"

	if [ -d "/opt/resolve" ]; then
	echo "Setting 777 mode for /opt/resolve" # not possible in install file?
	chmod 777 "/opt/resolve" # to allow to rm files from install dir
	echo "You may need to remove /opt/resolve manually"
	fi
	}
	#!/bin/bash
	# Remove all user files, then restore default configs.
	# Allows to get state of just installed package without actually reinstalling.
	# For maintainers only, users do not need this file.

	show_out_of_package_files() {
	find -L /opt/resolve \( -type d -printf "%p/\n" , -type f -print \) \| sort > /tmp/current-files.txt
	# sort filelist.txt > filelist_sorted.txt
	pacman -Ql davinci-resolve \| grep "/opt/resolve" \| sed -r 's/^davinci-resolve //' \| sort > /tmp/package-files.txt
	diff /tmp/package-files.txt /tmp/current-files.txt \| grep -v "^[0-9c0-9]"
	}

	remove_out_of_package_files() {
	for file in `show_out_of_package_files \| grep "> " \| sed -r 's/^> //'`
	do
	rm -rfv $file
	done
	}

	remove_out_of_package_files

	echo -e "Remaining out of package files:\n$(show_out_of_package_files)"

	restore_configs() {
	echo Restoring default configs
	rm -v "/opt/resolve/configs/config.dat"
	rm -v "/opt/resolve/configs/log-conf.xml"
	rm -v "/opt/resolve/DolbyVision/config.bin"
	# files will not be owned by root, but it does not matter
	cp -v "/opt/resolve/share/default-config-linux.dat" "/opt/resolve/configs/config.dat"
	cp -v "/opt/resolve/share/log-conf.xml" "/opt/resolve/configs/log-conf.xml"
	cp -v "/opt/resolve/share/default_cm_config.bin" "/opt/resolve/DolbyVision/config.bin"
	}

	restore_configs