#!/bin/bash
#  Script to setup the LinHES development enviroment
# ./setup_env.sh ( i686|x86_64 )  devID
# This script assumes that /tmp is usable.
START_DIR=`pwd`
TS=`date  +%Y%h%d_%H%M%S`

function arg_check {
    case $1 in
        i686) ARCH=$1 ;;
        x86_64) ARCH=$1 ;;
        *)
            echo "invalid arch specified"
            echo "valid options include i686 and x86_64"
            echo "EX:  ./setup_env.sh i686 "
            echo "EX:  ./setup_env.sh x86_64 "
            exit 1
            ;;
        esac


    case $2 in
        release) BENV="release" ;;
        testing) BENV="testing" ;;

        *)
            echo "invalid env specified"
            echo "valid options include release, testing"
            echo "EX:  ./setup_env.sh i686 testing"
            echo "EX:  ./setup_env.sh x86_64 testing"
            exit 1
            ;;
        esac


    if [ ! x$3 = x ]
    then
        USER=$3
        #check if developer template is present
    fi

}


function pacman_check {
    for i in pacman pacstrap
    do
        which $i
        status=$?
        if [ ! $status = 0 ]
        then
            echo "Can not find $i in the path."
            exit 1
        fi
    done


}


function checkout_repo {
    mkdir -p  $BENV/$ARCH
    cd $BENV/$ARCH

    git clone git@linhes.org:linhes_dev
    git clone git@linhes.org:linhes_pkgbuild

    # git clone $USER@knoppmyth.net:linhes_pkgbuild
    # git clone $USER@knoppmyth.net:linhes_dev


    if [ $BENV  == "testing" ]
    then
        echo "====================================="
        echo "switching linhes_pkgbuild to testing"

        cd linhes_pkgbuild
        git checkout -b testing origin/testing
        cd -

        echo "====================================="
    fi

    if [ $BENV  == "testing" ]
    then
        echo "====================================="
        echo "switching linhes_dev to testing"

        cd linhes_dev
        git checkout -b testing origin/testing
        cd -

    echo "====================================="
    fi

}

create_pkg_mirror_dir(){
    #create the local pkg dir's for mirror and creating pkg's

    [ -e $MIRROR_DIR     ] || mkdir -p $MIRROR_DIR

    for i in i686 x86_64
    do
        [ -e $MIRROR_DIR/$i     ] || mkdir -p $MIRROR_DIR/$i
        for y in core extra core-testing extra-testing
        do
            [ -e $MIRROR_DIR/$i/$y     ] || mkdir -p $MIRROR_DIR/$i/$y
            [ -e $MIRROR_DIR/src_packages/$y     ] || mkdir -p $MIRROR_DIR/src_packages/$y
        done
    done

    [ -e $MIRROR_DIR/sources     ] || mkdir -p $MIRROR_DIR/sources
    [ -e $MIRROR_DIR/packages    ] || mkdir -p $MIRROR_DIR/packages

}

create_container(){
    #correct pacman.conf to use the correct ARCH to build the chroot
    cd $START_DIR/$BENV/$ARCH/linhes_dev
    sed -e "s/REPLACEME/$ARCH/g" templates/pacman.conf.chroot > /tmp/pacman.conf.chroot

    #create the container
    cd $START_DIR
    #mkdir -p $START_DIR/$BENV/$ARCH/linhes_container_root.$ARCH
    mkdir -p $CONTAINER_DIR
    pacstrap -i -c -d -C /tmp/pacman.conf.chroot $CONTAINER_DIR  base base-devel openssh unison
    status=$?

    if [ !  $status  = 0 ]
    then
        printf "\n"
        printf "%s\n" "********************************************************"
        printf "*** %-48s ***\n" "      An error occured creating the container"
        printf "%s\n" "********************************************************"
        exit 1
    fi
}


copy_custom_developer_file(){
    cd $START_DIR/$BENV/$ARCH/linhes_dev
    if [ -d templates/developers/$USER ]
    then
        #check for login run
        if [ -f templates/developers/$USER/loginrun.sh ]
        then
            echo "copy loginrun.sh for $USER"
            cp -f templates/developers/$USER/loginrun.sh $CONTAINER_DIR/root/loginrun.sh
        fi

        if [ -f templates/developers/$USER/custom_chroot.sh ]
        then
            echo "running custom_chroot.sh for $USER"
            cd templates/developers/$USER
            BROOT=$CONTAINER_DIR ./custom_chroot.sh $ARCH
            cd -
        fi

    fi
}

create_entry_files() {

    #create custom enter_dev_chroot.sh script
    cp  templates/enter_dev_container.sh ../enter_dev_container.$ARCH.$TS
    sed -i "s/REPLACE_ARCH/$ARCH/" ../enter_dev_container.$ARCH.$TS
    sed -i "s/REPLACE_TS/$TS/" ../enter_dev_container.$ARCH.$TS

    chmod 755 ../enter_dev_container.$ARCH.$TS

    printf "%s\n" "********************************************************"
    printf "** %-50s **\n" "    To enter the container (linhes_container_root.$ARCH.$TS) run:"
    printf "** %-50s **\n" "            cd  $BENV/$ARCH"
    printf "** %-50s **\n" "            ./enter_dev_container.$ARCH.$TS"
    printf "%s\n" "********************************************************"

    #copy makepkg.conf into the chroot
    sed -e "s/REPLACEME/$ARCH/g" templates/makepkg.conf >  ../linhes_container_root.$ARCH.$TS/etc/makepkg.conf

    #copy pacman.conf into the chroot
    sed -e "s/REPLACEME/$ARCH/g" templates/pacman.conf.chroot > ../linhes_container_root.$ARCH.$TS/etc/pacman.conf
}




#-----------------------------------------------

arg_check $1 $2 $3
#checkout_repo
pacman_check

MIRROR_DIR=$START_DIR/$BENV/pkg_repo
create_pkg_mirror_dir

CONTAINER_DIR=$START_DIR/$BENV/$ARCH/linhes_container_root.$ARCH.$TS
create_container
copy_custom_developer_file
create_entry_files