#%autoindent
import sys
import os
sys.path.append(os.path.abspath("Lib/"))
from betweennesslib import Betweenness
from lslib import read_link_stream

if len(sys.argv)!=3:
	sys.stderr.write("Usage: %s input_file n\n"%(sys.argv[0]))
	sys.stderr.write("where input_file describes a link stream L=(T,V,E) and n gives the number of time points per node.\n")
	sys.stderr.write("Output: a line of the form t v b for each v in V and each time t in T with timestep |T|/n, with b the betweenness of (t,v) in L.\n")
	sys.exit()

L = read_link_stream(open(sys.argv[1]))
nb_points = float(sys.argv[2])

increment = (L.omega-L.alpha)/nb_points
for v in sorted(L.V):
	t = L.alpha
	while t <= L.omega:
		b = Betweenness(L,(t,v))
               	sys.stdout.write("%g %s %g\n"%(t,v,b))
               	sys.stdout.flush()
		last_t = t
		t += increment
#	if str(last_t)!=str(L.omega):
#		t = L.omega
#		b = Betweenness(L,(t,v))
#               	sys.stdout.write("%g %s %g\n"%(t,v,b))
#               	sys.stdout.flush()