#!/bin/sh

if ! which gnuplot > /dev/null 2>&1
then
    echo 'gnuplot not found - skipping graph creation' >&2
    exit 1
fi

graphFile=$(foamListTimes -latestTime)/line.xy
surfaceFile=$(cd postProcessing/fluid/inflow && ls -1tr */* | tail -n 1)

gnuplot<<EOF

    set terminal postscript eps size 8,9 color enhanced font "Helvetica,20"
    set output "./validation/$(basename "$PWD").eps"
    set multiplot layout 2,2
    set decimalsign '.'
    set grid

    A = 0.000586423
    q = 73890

    set key at graph 0.65,0.95
    set xlabel 'Radial coordinate, r/R (-)'
    set xrange [0:1]

    set ylabel 'Void fraction (-)'
    plot \
        "postProcessing/fluid/graph/$graphFile" \
        u (\$1/0.0096):2 w lp lt 1 t 'Simulation', \
        './validation/exptData/vof_deb1.txt' \
        u 1:2 w p lt rgb "black" pt 4 t 'Experiment'

    set ylabel 'Liquid temperature (K)'
    plot \
        "postProcessing/fluid/graph/$graphFile" \
        u (\$1/0.0096):3 w lp lt 1 t 'Simulation', \
        './validation/exptData/T_deb1.txt' \
        u 1:2 w p lt rgb "black" pt 4 t 'Experiment'

    set key at graph 0.99,0.95
    set xlabel 'Time (s)'
    set xrange [0.5:10]

    set ylabel 'Mass in- and outflow (kg/s)'
    set yrange [0.5:0.8]
    plot \
        './postProcessing/fluid/inflow/$surfaceFile' \
        every ::4::20000 u 1:(-1*360*\$3) w l lt 1 t 'liquid inflow', \
        './postProcessing/fluid/outflow/$surfaceFile' \
        every ::4::20000 u 1:(360*\$3) w l lt 3 t 'liquid outflow', \
        './postProcessing/fluid/outflow/$surfaceFile' \
        every ::4::20000 u 1:(360*\$2+360*\$3) w l lt 4 t 'liquid + vapor outflow'

    set ylabel 'Enthalpy in- and outflow (J/s)'
    set yrange [1.5e5:2.0e5]
    plot \
        './postProcessing/fluid/inletLiquid/$surfaceFile' \
        every ::4::20000 u 1:(-1*360*\$2) w l lt 1 t 'liquid inflow', \
        './postProcessing/fluid/inletLiquid/$surfaceFile' \
        every ::4::20000 u 1:(-1*360*\$2+360*A*q) w l lt 8 t 'liquid inflow + wall heat flux', \
        './postProcessing/fluid/outletLiquid/$surfaceFile' \
        every ::4::20000 u 1:(360*\$2) w l lt 3 t 'liquid outflow', \
        "<paste \
        ./postProcessing/fluid/outletLiquid/$surfaceFile \
        ./postProcessing/fluid/outletGas/$surfaceFile" \
        every ::4::20000 u 1:(360*\$2+360*\$4) w l lt 4 t 'liquid + vapor outflow'

    unset multiplot

EOF

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