#!/usr/bin/env bash
# Sage progress indicator
# (c) Harald Schilly, harald.schilly@gmail.com, Vienna, Austria
# License: GPLv2+
#
# use it this way:
# watch -n 10 ./sage_progress

# TODO assume, script is in SAGE_ROOT (will change!)
cd `dirname "$0"`

STDLST=".standard.list"
INSTLST=".install.list"
srcsize=70

pbar () {
    bar=`echo "$1 / $2 * $srcsize" | bc -l`
    printf "|"
    for i in $(seq 1 $bar); do printf "X" 1>&2; done
    for i in $(seq $bar $(( $srcsize-1 ))); do printf "-" 1>&2; done
    printf "|"
    echo
}

ccstats () {
    if which ccache >/dev/null; then
        ccache -s
        echo "note: clear ccache stats with 'ccache -z'"
    fi
}

runtime () {
    if [ -e .BUILDSTART ]; then
        sta=`cat .BUILDSTART` 
        cur=`date -u "+%s"`
        ela=$((cur-sta))
        sec=$((ela % 60))
        min=$((ela / 60 % 60))
        hrs=$((ela / 3600 % 24))
        dys=$((ela / 3600 / 24))
        echo "elapsed:    $dys d $hrs h $min min $sec sec"
    fi
}


while true; do

    find spkg/base/ -maxdepth 1 -type f -iname "*install*" -exec basename {} "-install" \; | tee $STDLST > /dev/null
    #base=`find spkg/base/ -maxdepth 1 -type f -iname "*install*" | wc -l`
    base=`wc -l < $STDLST`
    find spkg/installed/ -type f -exec basename {} \; | sort | tee $INSTLST > /dev/null
    installed=`wc -l < $INSTLST`
    find spkg/standard/ -iname "*.spkg" -type f -exec basename {} ".spkg" \; | sort | tee -a $STDLST > /dev/null
    sort < $STDLST | tee $STDLST > /dev/null
    standard=`wc -l < $STDLST`
    if [ $standard = 0 ]; then
      echo 'ERROR: $standard==0'
      cat $STDLST
      continue
    fi
    standard=$(($standard+1)) # add +1 since rpy is included in r spkg!
    both=`join $STDLST $INSTLST | wc -l`
    both=$(($both+1))  # add +1 since rpy is included in r spkg!
 
    clear #clears shell    
   
    echo "base:       $base"
    echo "installed:  $installed"
    echo "standard:   $standard"
    echo "both:       $both"
    runtime
    
    #what's a good method to get the current one?
    # they don't work:
    # `ls -1tr spkg/build/  | tail -1`
    #`find  spkg/build/ -maxdepth 1 -mtime +1  -type d `
    current=`ls -1 spkg/build/  | grep -v "bzip2" | grep -v "old" | grep -v "prereq"`
    if [ ! "$current" = "" ]; then
      echo "currently:  $current"
    else
      echo "currently:  no building in progress, probably building documentation ..."
    fi
    
    #progress=`echo "lenght=5; scale=2; $installed / ($base + $standard) * 100" | bc -l`
    progress=`echo "lenght=5; scale=2; $both / $standard * 100" | bc -l`
    echo "progress:   $progress  %"
    echo
    pbar $both $standard   
    pbar $both $standard   
    pbar $both $standard   
    echo
    ccstats
    echo "exit with CTRL-C" 
    sleep 10
done