#!/bin/bash

# options

if [ -z "$PLATFORM" ]; then

	PLATFORM="linux-x64"

fi

export PLATFORM

if [ -z "$THREADS" ]; then

	THREADS=8

fi

export THREADS

# root

ROOT_DIR=`realpath "$0"`

ROOT_DIR=`dirname "$ROOT_DIR"`

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

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

#

# Fairy Tale

# 

# Once upon time in faraway...

#

# Function dependency:

#

# 1. download 

#     |

# 2. unpack

#     |

#     | env^

#     |  |

# 3.  | envdeps  

#     |  |   |

# 4. build   |

#     |      |

# 5. install |

#     |    | |

# 6.  |    env

#     |    |

#     |    envdeps*

#     | 

# 7. install_release

#     |

#     | env_release^

#     |  |

# 8.  | envdeps_release

#     |  |

# 9. env_release

#     |

#    envdeps_release*

#

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

copy() {

	if [ -d "$1" ]; then

		if ! mkdir -p $2; then

			return 1

		fi

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

			if ! cp -rlf $1/* "$2/"; then

				return 1

			fi

		fi

	elif [ -f "$1" ]; then

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

			return 1

		fi

	else

		return 1

	fi

}

message() {

    echo " ------ $1"

}

set_done() {

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

}

set_undone_silent() {

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

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

}

set_undone() {

	message "$1 set_undone $2"

	set_undone_silent $1 $2

}

clean_packet_directory_silent() {

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

        return 0

    fi

	set_undone_silent $1 $2

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

}

clean_packet_directory() {

	message "$1 clean $2"

	clean_packet_directory_silent $1 $2

}

check_packet_function() {

    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

}

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

    set_environment_vars $NAME

    local FUNC_NAME=pk$FUNC

    local FUNC_CURRENT_PACKET_DIR=$CURRENT_PACKET_DIR/$FUNC

    message "$NAME $FUNC"

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

        return 0

    fi

    set_undone_silent $NAME $FUNC

    mkdir -p $FUNC_CURRENT_PACKET_DIR

    cd $FUNC_CURRENT_PACKET_DIR

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    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

    set_done $NAME $FUNC

}

foreach_deps() {

    local NAME=$1

    local FUNC=$2

    local RECURSIVE=$3

    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

}

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

}

download() {

    if ! (check_packet_function $1 download || call_packet_function $1 download); then

        return 1

    fi

}

unpack() {

    if ! (check_packet_function $1 unpack || (download $1 && call_packet_function $1 unpack)); then

        return 1

    fi

}

envdeps() {

    if check_packet_function $1 envdeps; then

        return 0

    fi

    local NAME=$1

	if ! foreach_deps $NAME env; then

		return 1

	fi

    message "$NAME envdeps"

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

    	return 0

    fi

    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() {

    if ! (check_packet_function $1 build || (envdeps $1 && unpack $1 && call_packet_function $1 build prepare_build)); then

        return 1

    fi

}

install() {

    if ! (check_packet_function $1 install || (envdeps $1 && build $1 && call_packet_function $1 install)); then

        return 1

    fi

}

env() {

    if check_packet_function $1 env; then

        return 0

    fi

    local NAME=$1

    if ! (install $1 && envdeps $1); then

        return 1

    fi

    message "$NAME env"

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

    	return 0

    fi

    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

}

install_release() {

    if ! (check_packet_function $1 install_release || (install $1 && call_packet_function $1 install_release)); then

        return 1

    fi

}

envdeps_release() {

    if check_packet_function $1 envdeps_release; then

        return 0

    fi

    local NAME=$1

	if ! foreach_deps $NAME env_release; then

		return 1

	fi

	message "$NAME envdeps_release"

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

    	return 0

    fi

    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

}

env_release() {

    if check_packet_function $1 env_release; then

        return 0

    fi

    local NAME=$1

    if ! (install_release $1 && envdeps_release $1); then

        return 1

    fi

	message "$NAME env_release"

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

    	return 0

    fi

    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() {

    clean_download $1

    clean_unpack $1

    clean_envdeps $1

    clean_build $1

    clean_install $1

    clean_env $1

    clean_install_release $1

    clean_envdeps_release $1

    clean_env_release $1

}

clean_all_install() {

    clean_envdeps $1

    clean_build $1

    clean_install $1

    clean_env $1

    clean_install_release $1

    clean_envdeps_release $1

    clean_env_release $1

}

clean_all_env() {

    clean_install $1

    clean_install_release $1

    clean_envdeps $1

    clean_env $1

    clean_envdeps_release $1

    clean_env_release $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

}

clean() {

    set_undone_download $1

    set_undone_unpack $1

    set_undone_envdeps $1

    set_undone_build $1

    set_undone_install $1

    set_undone_env $1

    set_undone_install_release $1

    set_undone_envdeps_release $1

    set_undone_env_release $1

}

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

with_deps() {

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

		return 1

	fi

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

        return 1

    fi

}

shell() {

    set_environment_vars $1

    cd $PACKET_DIR/$1

    /bin/bash -i

}

dry_run() {

    DRY_RUN=1

    "$@"

}

"$@"