#!/usr/bin/env python

# Load ESDS
import sys
sys.path.append("../../")
import esds
import numpy as np

########## Scenario ##########
# Notations:
#   - Remaining communication duration (last communication ends minus current simulated time) = C
#   - Last communication duration (previous row) = U
#   - Last remaining data size (previous row) = D
#   - Current remaining data (current row) = R
#   - Initial data size (first row) = I
#   - Bandwidth = BW
#   - Latency = L
# |-------------------+------------+----------------+----------------------+--------------------------+-------------------------|
# | Simulated time(s) | Latency(s) | Bandwidth(bps) | Remaining data (bit) | Communcation duration(s) | Communcation ends at(s) |
# |-------------------+------------+----------------+----------------------+--------------------------+-------------------------|
# |                 0 |          0 |              8 | 8                    | 1                        |                       1 |
# |               0.5 |        0.5 |              8 | C/U*D = 4            | R/I * L + R/BW = 0.75    |                    1.25 |
# |                 1 |          1 |              8 | C/U*D = 1.33         | R/I * L + R/BW = 0.33    |                    1.33 |
# |              1.33 |          1 |              8 |                      |                          |                         |
# |-------------------+------------+----------------+----------------------+--------------------------+-------------------------|
##############################

B=np.full((2,2),8)
L=np.full((2,2),0)
s=esds.Simulator({"wlan0":{"bandwidth":B, "latency":L},"eth0":{"bandwidth":B, "latency":L}})

s.create_node("sender")
s.create_node("receiver")

def callback(simulator):
    simulator.log("Network update!")
    new_lat_wlan0=simulator.netmat["wlan0"]["latency"]+1/2
    new_lat_eth0=simulator.netmat["eth0"]["latency"]+1/2
    simulator.update_network({"wlan0":{"bandwidth":B, "latency":new_lat_wlan0},"eth0":{"bandwidth":B, "latency":new_lat_eth0}})
    
s.run(breakpoints_every=1/2,breakpoint_callback=callback)