#!/bin/bash

# options

if [ -z "$PLATFORM" ]; then

	PLATFORM="linux-x64"

fi

export PLATFORM

if [ -z "$THREADS" ]; then

	THREADS=8

fi

export THREADS

# root

OLDDIR=`pwd`

ROOT_DIR=$(cd `dirname "$0"`; pwd)

cd "$OLDDIR"

ROOT_DIR=`dirname "$ROOT_DIR"`

ROOT_DIR=`dirname "$ROOT_DIR"`

export ROOT_DIR

# dirs

export SCRIPT_DIR=$ROOT_DIR/script

export COMMON_SCRIPT_DIR=$SCRIPT_DIR/common

export INCLUDE_SCRIPT_DIR=$SCRIPT_DIR/include

export PACKET_SCRIPT_DIR=$SCRIPT_DIR/packet

export PACKET_DIR=$ROOT_DIR/packet/$PLATFORM

if [ ! -z $PACKET_BUILD_DIR ]; then

	export PACKET_DIR=$PACKET_BUILD_DIR/$PLATFORM

fi

# vars

INITIAL_LD_LIBRARY_PATH=$LD_LIBRARY_PATH

INITIAL_PATH=$PATH

INITIAL_LDFLAGS=$LDFLAGS

INITIAL_CFLAGS=$CFLAGS

INITIAL_CPPFLAGS=$CPPFLAGS

INITIAL_PKG_CONFIG_PATH=$PKG_CONFIG_PATH

DRY_RUN=

FORCE=

CLEAN_BEFORE_DO=

NO_CHECK_DEPS=

declare -A COMPLETION_STATUS

###################################

#

# Fairy Tale

# 

# Once upon time in faraway...

#

# Function dependency:

#

# 1. download 

#     |

# 2. unpack

#     |

#     | env^

#     |  |

# 3.  | envdeps  

#     |  | | |

# 4. build | |

#     |    | |

# 5. install |

#     |    | |

# 6.  |    env

#     |    |

#     |    envdeps*

#     |

#     | env_release^

#     |  | 

# 7.  | envdeps_release

#     |  |           | 

# 8. install_release |

#            |       |

# 9.        env_release

#            |

#    envdeps_release*

#

###################################

FUNC_DEPS_download=""

FUNC_DEPS_unpack="download"

FUNC_DEPS_envdeps="-env"

FUNC_DEPS_build="envdeps unpack"

FUNC_DEPS_install="envdeps build"

FUNC_DEPS_env="envdeps install"

FUNC_DEPS_envdeps_release="-env_release"

FUNC_DEPS_install_release="envdeps_release install"

FUNC_DEPS_env_release="envdeps_release install_release"

copy() {

	if [ -d "$1" ]; then

		if ! mkdir -p $2; then

			return 1

		fi

		if [ "$(ls -A $1)" ]; then

			if ! cp --remove-destination -rlP $1/* "$2/"; then

				return 1

			fi

		fi

	elif [ -f "$1" ]; then

		if ! (mkdir -p `dirname $2` && cp --remove-destination -l "$1" "$2"); then

			return 1

		fi

	else

		return 1

	fi

}

readdir() {

    local FILE=$1

    if [ -d "$FILE" ]; then

        echo "directory begin"

        ls -1 "$1" | while read SUBFILE; do

            if [ "$SUBFILE" = ".git" ]; then

                continue

            fi

            local STAT=`stat -c%F:%a:%s "$FILE/$SUBFILE"`

            echo "$STAT:$SUBFILE"

            readdir "$FILE/$SUBFILE"

        done

        echo "directory end"

    else

        local MD5=`md5sum -b "$FILE"`

        echo "file:${MD5:0:32}"

    fi

}

md5() {

    local MD5=`readdir "$1" | md5sum -b`

    echo "${MD5:0:32}"

}

message() {

    echo " ------ $1"

}

try_do_nothing() {

	if [ -z "$DRY_RUN" ]; then

		return 1

	fi

	set_done $1 $2

}

set_done() {

	local COMPLETION_KEY="$1:$2"

	if [ -z "$DRY_RUN" ]; then

		touch "$PACKET_DIR/$1/$2.done"

	fi

	COMPLETION_STATUS[$COMPLETION_KEY]=complete

}

set_undone_silent() {

	local COMPLETION_KEY="$1:$2"

	if [ -z "$DRY_RUN" ]; then

    	rm -f $PACKET_DIR/$1/$2.*.done

		rm -f "$PACKET_DIR/$1/$2.done"

	fi

	COMPLETION_STATUS[$COMPLETION_KEY]=incomplete

}

set_undone() {

	message "$1 set_undone $2"

	set_undone_silent $1 $2

}

clean_packet_directory_silent() {

	set_undone_silent $1 $2

    try_do_nothing $1 $2 && return 0

    rm -rf "$PACKET_DIR/$1/$2"

}

clean_packet_directory() {

	message "$1 clean $2"

	clean_packet_directory_silent $1 $2

}

check_packet_function() {

	if [ ! -z "$FORCE" ]; then

		return 1

	fi

    if [ ! -f "$PACKET_DIR/$1/$2.done" ]; then

        return 1

    fi

}

prepare_build() {

    if ! copy "$UNPACK_PACKET_DIR" "$BUILD_PACKET_DIR"; then

        return 1

    fi

}

prepare_install() {

    if ls $BUILD_PACKET_DIR/version-* 1> /dev/null 2>&1; then

        cp --remove-destination $BUILD_PACKET_DIR/version-* "$INSTALL_PACKET_DIR/" || true

    fi

}

prepare_install_release() {

    if ls $INSTALL_PACKET_DIR/version-* 1> /dev/null 2>&1; then

        cp --remove-destination $INSTALL_PACKET_DIR/version-* "$INSTALL_RELEASE_PACKET_DIR/" || true

    fi

}

set_environment_vars() {

    export NAME=$1

    export CURRENT_PACKET_DIR=$PACKET_DIR/$NAME

	export FILES_PACKET_DIR=$PACKET_SCRIPT_DIR/$NAME.files

    export DOWNLOAD_PACKET_DIR=$CURRENT_PACKET_DIR/download

    export UNPACK_PACKET_DIR=$CURRENT_PACKET_DIR/unpack

    export ENVDEPS_PACKET_DIR=$CURRENT_PACKET_DIR/envdeps

    export BUILD_PACKET_DIR=$CURRENT_PACKET_DIR/build

    export INSTALL_PACKET_DIR=$CURRENT_PACKET_DIR/install

    export INSTALL_RELEASE_PACKET_DIR=$CURRENT_PACKET_DIR/install_release

    export ENV_PACKET_DIR=$CURRENT_PACKET_DIR/env

    export ENVDEPS_RELEASE_PACKET_DIR=$CURRENT_PACKET_DIR/envdeps_release

    export ENV_RELEASE_PACKET_DIR=$CURRENT_PACKET_DIR/env_release

    export LD_LIBRARY_PATH="$ENV_PACKET_DIR/lib:$ENV_PACKET_DIR/lib64:$ENVDEPS_PACKET_DIR/lib:$ENVDEPS_PACKET_DIR/lib64:$INITIAL_LD_LIBRARY_PATH"

    export PATH="$ENVDEPS_PACKET_DIR/bin:$INITIAL_PATH"

    export LDFLAGS="-L$ENVDEPS_PACKET_DIR/lib $INITIAL_LDFLAGS"

    export CFLAGS="-I$ENVDEPS_PACKET_DIR/include $INITIAL_CFLAGS"

    export CPPFLAGS="-I$ENVDEPS_PACKET_DIR/include $INITIAL_CPPFLAGS"

    export PKG_CONFIG_PATH="$ENVDEPS_PACKET_DIR/lib/pkgconfig:$INITIAL_PKG_CONFIG_PATH" 

}

call_packet_function() {

    local NAME=$1

    local FUNC=$2

    local PREPARE_FUNC=$3

    local FINALIZE_FUNC=$4

    local COMPARE_RESULTS=$5

    set_environment_vars $NAME

    local FUNC_NAME=pk$FUNC

    local FUNC_CURRENT_PACKET_DIR=$CURRENT_PACKET_DIR/$FUNC

    message "$NAME $FUNC"

    try_do_nothing $NAME $FUNC && return 0

	echo "${DRY_RUN_DONE[@]}"

	local PREV_HASH=

	if [ "$COMPARE_RESULTS" = "compare_results" ]; then

		if check_packet_function $NAME $FUNC; then

			PREV_HASH=`md5 "$FUNC_CURRENT_PACKET_DIR"` 

			[ ! $? -eq 0 ] && return 1

		fi

	else

   		set_undone_silent $NAME $FUNC

	fi

    mkdir -p $FUNC_CURRENT_PACKET_DIR

    cd $FUNC_CURRENT_PACKET_DIR

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    if [ ! -z "$PREPARE_FUNC" ]; then

        if ! "$PREPARE_FUNC"; then

            return 1

        fi

    fi

    if ! "$FUNC_NAME"; then

        return 1

    fi

    if [ ! -z "$FINALIZE_FUNC" ]; then

        if ! "$FINALIZE_FUNC"; then

            return 1

        fi

    fi

	if [ ! -z "$PREV_HASH" ]; then

		local HASH=`md5 "$FUNC_CURRENT_PACKET_DIR"` 

		[ ! $? -eq 0 ] && return 1

		if [ "$HASH" = "$PREV_HASH" ]; then

			message "$NAME $FUNC - not changed"

			return 0

		fi

	fi

    set_done $NAME $FUNC

}

foreach_deps() {

    local NAME=$1

    local FUNC=$2

    local RECURSIVE=$3

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    local CURRENT_DEPS=$DEPS

    for DEP in $CURRENT_DEPS; do

        if [ ! -z "$DEP" ]; then

        	local DEP_LOCAL=$DEP 

        	if [ "$RECURSIVE" = "recursive" ]; then

        		if ! foreach_deps "$DEP_LOCAL" "$FUNC" "$RECURSIVE"; then

                	return 1

        		fi

        	fi

            if ! "$FUNC" "$DEP_LOCAL" "$NAME"; then

                return 1

            fi

        fi

	done

}

is_complete() {

	local NAME=$1

	local FUNC=$2

	local SUBFUNCS_VAR_NAME=FUNC_DEPS_$FUNC

    local SUBFUNCS=${!SUBFUNCS_VAR_NAME}

    local COMPLETION_KEY="$NAME:$FUNC"

	if [ ! -z ${COMPLETION_STATUS[$COMPLETION_KEY]} ]; then

		if [ "${COMPLETION_STATUS[$COMPLETION_KEY]}" = "complete" ]; then

			return 0

		else

			return 1

		fi

	fi

	COMPLETION_STATUS[$COMPLETION_KEY]=incomplete

	if ! check_packet_function $1 $2; then

		return 1

	fi

	if [ ! -z "$NO_CHECK_DEPS" ]; then

		COMPLETION_STATUS[$COMPLETION_KEY]=complete

		return 0

	fi

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

	local CURRENT_DEPS=$DEPS

	for SUBFUNC in $SUBFUNCS; do

		local SUBFUNC_LOCAL=$SUBFUNC

		if [ "${SUBFUNC_LOCAL:0:1}" = "-" ]; then

			SUBFUNC_LOCAL=${SUBFUNC_LOCAL:1}

		    for DEP in $CURRENT_DEPS; do

		        if [ ! -z "$DEP" ]; then

		        	local DEP_LOCAL=$DEP

					if ! is_complete $DEP_LOCAL $SUBFUNC_LOCAL; then

						return 1

					fi

		    	    if [ "$PACKET_DIR/$NAME/$FUNC.done" -ot "$PACKET_DIR/$DEP_LOCAL/$SUBFUNC_LOCAL.done" ]; then

		        		return 1

		    	    fi

		        fi

		    done 

		else

			if ! is_complete $NAME $SUBFUNC_LOCAL; then

				return 1

			fi

    	    if [ "$PACKET_DIR/$NAME/$FUNC.done" -ot "$PACKET_DIR/$NAME/$SUBFUNC_LOCAL.done" ]; then

        		return 1

    	    fi

		fi

	done

	COMPLETION_STATUS[$COMPLETION_KEY]=complete

}

prepare() {

	local NAME=$1

	local FUNC=$2

	local SUBFUNCS_VAR_NAME=FUNC_DEPS_$FUNC

    local SUBFUNCS=${!SUBFUNCS_VAR_NAME}

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

	local CURRENT_DEPS=$DEPS

	local DODEPS=

	for SUBFUNC in $SUBFUNCS; do

		local SUBFUNC_LOCAL=$SUBFUNC

		if [ "${SUBFUNC_LOCAL:0:1}" = "-" ]; then

			SUBFUNC_LOCAL=${SUBFUNC_LOCAL:1}

		    for DEP in $CURRENT_DEPS; do

		        if [ ! -z "$DEP" ]; then

					if ! $SUBFUNC_LOCAL $DEP; then

						return 1

					fi

		        fi

		    done 

		elif ! $SUBFUNC_LOCAL $NAME; then

			return 1

		fi

	done

	if [ ! -z "$CLEAN_BEFORE_DO" ]; then

		if ! clean_packet_directory $NAME $FUNC; then

			return 1

		fi

	fi

}

add_envdeps() {

	if ! copy "$PACKET_DIR/$1/env" "$PACKET_DIR/$2/envdeps"; then

	    return 1

	fi

}

add_envdeps_release() {

	if ! copy "$PACKET_DIR/$1/env_release" "$PACKET_DIR/$2/envdeps_release"; then

	    return 1

	fi

}

update() {

    local NAME=$1

    prepare $NAME download || return 1

    call_packet_function $NAME download "" "" compare_results || return 1

}

download() {

    local NAME=$1

    is_complete $NAME download && return 0

    prepare     $NAME download || return 1

    call_packet_function $NAME download || return 1

}

unpack() {

    local NAME=$1

    is_complete $NAME unpack && return 0

    prepare     $NAME unpack || return 1

    call_packet_function $NAME unpack || return 1

}

envdeps() {

    local NAME=$1

    is_complete $NAME envdeps && return 0 

	prepare     $NAME envdeps || return 1

    message "$NAME envdeps"

    try_do_nothing $NAME envdeps && return 0

    clean_packet_directory_silent $NAME envdeps

    mkdir -p "$PACKET_DIR/$NAME/envdeps"

	if ! foreach_deps $NAME add_envdeps; then

		return 1

	fi

	set_done $NAME envdeps

}

build() {

    local NAME=$1

    is_complete $NAME build && return 0

    prepare     $NAME build || return 1

    call_packet_function $NAME build prepare_build || return 1

}

install() {

    local NAME=$1

    is_complete $NAME install && return 0

    prepare     $NAME install || return 1

    call_packet_function $NAME install prepare_install || return 1

}

env() {

    local NAME=$1

    is_complete $NAME env && return 0

    prepare     $NAME env || return 1

    message "$NAME env"

    try_do_nothing $NAME env && return 0

    clean_packet_directory_silent $NAME env

    mkdir -p "$PACKET_DIR/$NAME/env"

	if ! (copy "$PACKET_DIR/$NAME/envdeps" "$PACKET_DIR/$NAME/env" \

	&& copy "$PACKET_DIR/$NAME/install" "$PACKET_DIR/$NAME/env"); then

	    return 1

	fi

	set_done $NAME env

}

envdeps_release() {

    local NAME=$1

    is_complete $NAME envdeps_release && return 0

	prepare     $NAME envdeps_release || return 1

	message "$NAME envdeps_release"

    try_do_nothing $NAME envdeps_release && return 0

    clean_packet_directory_silent $NAME envdeps_release

    mkdir -p "$PACKET_DIR/$NAME/envdeps_release"

	if ! foreach_deps $NAME add_envdeps_release; then

		return 1

	fi

	set_done $NAME envdeps_release

}

install_release() {

    local NAME=$1

    is_complete $NAME install_release && return 0

    prepare     $NAME install_release || return 1

    call_packet_function $NAME install_release prepare_install_release || return 1

}

env_release() {

    local NAME=$1

    is_complete $NAME env_release && return 0

    prepare     $NAME env_release || return 1

	message "$NAME env_release"

    try_do_nothing $NAME env_release && return 0

    clean_packet_directory_silent $NAME env_release

    mkdir -p "$PACKET_DIR/$NAME/env_release"

	if ! (copy "$PACKET_DIR/$NAME/envdeps_release" "$PACKET_DIR/$NAME/env_release" \

	&& copy "$PACKET_DIR/$NAME/install_release" "$PACKET_DIR/$NAME/env_release"); then

	    return 1

	fi

	set_done $NAME env_release

}

#############

clean_download() {

    clean_packet_directory $1 download

}

clean_unpack() {

    clean_packet_directory $1 download

}

clean_envdeps() {

    clean_packet_directory $1 envdeps

}

clean_build() {

    clean_packet_directory $1 build

}

clean_install() {

    clean_packet_directory $1 install

}

clean_env() {

    clean_packet_directory $1 env

}

clean_install_release() {

    clean_packet_directory $1 install_release

}

clean_envdeps_release() {

    clean_packet_directory $1 envdeps_release

}

clean_env_release() {

    clean_packet_directory $1 env_release

}

clean_all_env() {

    clean_install $1

    clean_install_release $1

    clean_envdeps $1

    clean_env $1

    clean_envdeps_release $1

    clean_env_release $1

}

clean_all_install() {

    clean_build $1

    clean_all_env $1

}

clean_all_unpack() {

    clean_download $1

    clean_unpack $1

}

clean() {

	message "$1 clean all"

	try_do_nothing $NAME clean_all && return 0

    rm -rf "$PACKET_DIR/$1"

}

#############

set_undone_download() {

    set_undone $1 download

}

set_undone_unpack() {

    set_undone $1 download

}

set_undone_envdeps() {

    set_undone $1 envdeps

}

set_undone_build() {

    set_undone $1 build

}

set_undone_install() {

    set_undone $1 install

}

set_undone_env() {

    set_undone $1 env

}

set_undone_install_release() {

    set_undone $1 install_release

}

set_undone_envdeps_release() {

    set_undone $1 envdeps_release

}

set_undone_env_release() {

    set_undone $1 env_release

}

set_undone_all_env() {

    set_undone_install $1

    set_undone_install_release $1

    set_undone_envdeps $1

    set_undone_env $1

    set_undone_envdeps_release $1

    set_undone_env_release $1

}

set_undone_all_install() {

    set_undone_build $1

    set_undone_all_env $1

}

set_undone_all_unpack() {

    set_undone_download $1

    set_undone_unpack $1

}

set_undone_all() {

	set_undone_all_unpack $1

    set_undone_all_install $1

}

#############

with_deps() {

	if ! foreach_deps "$2" "$1" "recursive"; then

		return 1

	fi

    if ! "$1" "$2"; then

        return 1

    fi

}

shell() {

	echo "Set environment for $1"

    set_environment_vars $1

    cd $PACKET_DIR/$1

    if [ -z "${*:2}" ]; then

    	/bin/bash -i

	else

		"${@:2}"

    fi

}

dry_run() {

    DRY_RUN=1

    "$@"

}

no_check_deps() {

    NO_CHECK_DEPS=1

    "$@"

}

force() {

    FORCE=1

    "$@"

}

clean_before_do() {

	CLEAN_BEFORE_DO=1

    "$@"

}

"$@"