#!/usr/bin/gnuplot
# # /usr/local/bin/PlotSpeedTest
# # SRJ 2016-12-26
fmt = '%Y-%m-%d %H:%M';        # Format used for printing out time
time_diff=4*60*60;             # Seconds between local time zone and UTC
curr_time_utc = time(0);       # Get UTC time
curr_time_loc = curr_time_utc - time_diff;     # Adjust to local time zone
set title "Connection speeds for 32 days past, CBT Fioptics\nLast run: ".strftime(fmt, curr_time_loc);
set style data lines
set term pngcairo size 1820, 980
set timefmt "%Y-%m-%d %H:%M"
set xdata time
set format x "%b-%d"
set xtics rotate
set xlabel "Time, tics are daily, samples are every six hours (09 */6 * * *)...\nTested using Sindre Sorhus' fast-cli."
set autoscale y
set autoscale xfix
set style line 1 lt 2 lc rgb "black" lw 4
set style line 2 lt 2 lc rgb "green" lw 2
set style line 3 lt 2 lc rgb "red" lw 2
set grid
set key bottom left
set key opaque

set output "/dev/null"
plot '/root/.PlotLog' using 1:4
max_Dn = GPVAL_DATA_Y_MAX
min_Dn = GPVAL_DATA_Y_MIN

plot '/root/.PlotLog' using 1:5
max_Up = GPVAL_DATA_Y_MAX
min_Up = GPVAL_DATA_Y_MIN

plot '/root/.PlotLog' using 1:3
max_Dl = GPVAL_DATA_Y_MAX
min_Dl = GPVAL_DATA_Y_MIN

set output "/var/www/html/SpeedTest.png"
plot \
'/root/.PlotLog' using 1:4 title sprintf("Download, Mbs, Max:%g Min:%g",  max_Dn, min_Dn ) with lines ls 1, \
'/root/.PlotLog' using 1:5 title sprintf("Upload, Mbs, Max:%g Min:%g",  max_Up, min_Up ) with lines ls 2, \
'/root/.PlotLog' using 1:3 title sprintf("Delay, ms, Max:%g Min:%g",  max_Dl, min_Dl ) with lines ls 3