#!/bin/sh

TARGET_DIR="/mnt"
EDITOR=


# clock
HARDWARECLOCK=
TIMEZONE=

# partitions
PART_ROOT=

# default filesystem specs (the + is bootable flag)
# <mountpoint>:<partsize>:<fstype>[:+]
DEFAULTFS="/boot:32:ext2:+ swap:256:swap /:7500:ext3 /home:*:ext3"



start_process ()
{
	#####################
	## begin execution ##

	# install stages
	S_SRC=0         # choose install medium
	S_NET=0         # network configuration
	S_CLOCK=0       # clock and timezone
	S_PART=0        # partitioning
	S_MKFS=0        # formatting
	S_MKFSAUTO=0    # auto fs part/formatting TODO: kill this
	S_SELECT=0      # package selection
	S_INSTALL=0     # package installation
	S_CONFIG=0      # configuration editing
	S_GRUB=0        # TODO: kill this - if using grub
	S_BOOT=""       # bootloader installed (set to loader name instead of 1)

	var_UI_TYPE=dia

	notify "Welcome to the Arch Linux Installation program. The install \
	process is fairly straightforward, and you should run through the options in \
	the order they are presented. If you are unfamiliar with partitioning/making \
	filesystems, you may want to consult some documentation before continuing. \
	You can view all output from commands by viewing your VC7 console (ALT-F7). \
	ALT-F1 will bring you back here."

	while true
	do
    		mainmenu
	done

}


phase_preparation ()
{
	#TODO: when does grub device map happen in official installer?
	execute worker runtime_packages
	notify "Generating GRUB device map...\nThis could take a while.\n\n Please be patient."
	get_grub_map
}

mainmenu()  
{
    if [ -n "$NEXTITEM" ]; then
        DEFAULT="--default-item $NEXTITEM"
    else
        DEFAULT=""
    fi
    DIALOG $DEFAULT --title " MAIN MENU " \
        --menu "Use the UP and DOWN arrows to navigate menus.  Use TAB to switch between buttons and ENTER to select." 16 55 8 \
        "0" "Select Source" \
        "1" "Set Clock" \
        "2" "Prepare Hard Drive" \
        "3" "Select Packages" \
        "4" "Install Packages" \
        "5" "Configure System" \
        "6" "Install Bootloader" \
        "7" "Exit Install" 2>$ANSWER
    NEXTITEM="$(cat $ANSWER)"
    case $(cat $ANSWER) in
        "0")
            select_source ;;
        "1")
            set_clock ;;
        "2")
            prepare_harddrive ;;
        "3")
            select_packages ;;
        "4")
            installpkg ;;
        "5")
            configure_system ;;
        "6")
            install_bootloader ;;
        "7")
            echo ""
            echo "If the install finished successfully, you can now type 'reboot'"
            echo "to restart the system."
            echo ""
            exit 0 ;;
        *)
            ask_yesno "Abort Installation?" && exit 0
            ;;
    esac
}


configure_system()
{
    ## PREPROCESSING ##
    # only done on first invocation of configure_system
    if [ $S_CONFIG -eq 0 ]; then

        # /etc/pacman.d/mirrorlist
        # add installer-selected mirror to the top of the mirrorlist
        if [ "$MODE" = "ftp" -a "${SYNC_URL}" != "" ]; then
            awk "BEGIN { printf(\"# Mirror used during installation\nServer = "${SYNC_URL}"\n\n\") } 1 " "${TARGET_DIR}/etc/pacman.d/mirrorlist"
        fi

        # /etc/rc.conf
        # insert timezone and utc info
        sed -i -e "s/^TIMEZONE=.*/TIMEZONE=\"$TIMEZONE\"/g" \
               -e "s/^HARDWARECLOCK=.*/HARDWARECLOCK=\"$HARDWARECLOCK\"/g" \
               ${TARGET_DIR}/etc/rc.conf
    fi


	interactive_configure_system
	
	run_mkinitcpio
	target_locale-gen
	S_CONFIG=1
}


prepare_harddrive()
{
    S_MKFSAUTO=0
    S_MKFS=0
    DONE=0
    NEXTITEM=""
    while [ "$DONE" = "0" ]; do
        if [ -n "$NEXTITEM" ]; then
            DEFAULT="--default-item $NEXTITEM"
        else
            DEFAULT=""
        fi
        DIALOG $DEFAULT --menu "Prepare Hard Drive" 12 60 5 \
            "1" "Auto-Prepare (erases the ENTIRE hard drive)" \
            "2" "Partition Hard Drives" \
            "3" "Set Filesystem Mountpoints" \
            "4" "Return to Main Menu" 2>$ANSWER
        NEXTITEM="$(cat $ANSWER)"
        case $(cat $ANSWER) in
            "1")
                interactive_autoprepare && S_MKFSAUTO=1 ;;
            "2")
		if [ "$S_MKFSAUTO" = "1" ]; then
			notify "You have already prepared your filesystems with Auto-prepare"
		else
			interactive_partition && S_PART=1 ;;
		fi
            "3")
		PARTFINISH=""
		if [ "$S_MKFSAUTO" = "1" ]; then
			notify "You have already prepared your filesystems with Auto-prepare"
		else
			interactive_mountpoints && S_MKFS=1 ;;
		fi
            *)
                DONE=1 ;;
        esac
    done
    NEXTITEM="1"
}


# set_clock()
# prompts user to set hardware clock and timezone
#
# params: none
set_clock()   
{
	interactive_set_clock && S_CLOCK=1
}

#[ $S_SELECT -eq 0 ] && install_pkg && S_INSTALL=1 # user must first select, then install
# automagic time!
# any automatic configuration should go here
#notify "Writing base configuration..."        
#auto_fstab
#auto_network
#auto_locale 



# select_packages()
# prompts the user to select packages to install
select_packages() {
    # step dependencies
    if [ $S_SRC -eq 0 ]; then
        DIALOG --msgbox "You must select an installation source!" 0 0
        return 1
    fi

    # if selection has been done before, warn about loss of input
    # and let the user exit gracefully
    if [ $S_SELECT -ne 0 ]; then
        DIALOG --yesno "WARNING: Running this stage again will result in the loss of previous package selections.\n\nDo you wish to continue?" 10 50 || return 1
    fi

	interactive_select_packages && S_SELECT=1
}


# donetwork()
# Hand-hold through setting up networking
donetwork() {
	interactive_donetwork && S_NET=1
}


dogrub() {
	interactive_dogrub && S_GRUB=1
}


# exit if network wasn't configured in installer
#  if [ $S_NET -eq 0 ]; then
#      return 1
# fi

# ask_yesno "Do you want to use the network settings from the installer in rc.conf and resolv.conf?\n\nIf you used Proxy settings, they will be written to /etc/profile.d/proxy.sh" || return 1

#if [ $S_DHCP -ne 1 ]; then
#	auto_network
#fi