"""
This file contains all your file and directory definitions 
for elevation, meshes and outputs.
"""

import os
from anuga.utilities.system_tools import get_user_name, get_host_name
from time import localtime, strftime, gmtime
from os.path import join, exists


#-------------------------------------------------------------------------------
# Directory setup
#-------------------------------------------------------------------------------

# this section needs to be updated to reflect the modelled community.
# Note, the user needs to set up the directory system accordingly
state = 'queensland'
scenario_name = 'gold_coast'
scenario_folder = 'gold_coast_tsunami_scenario_2009'

#-------------------------------------------------------------------------------
# Initial Conditions
#-------------------------------------------------------------------------------

# Model specific parameters.
# One or all can be changed each time the run_model script is executed

               # difference between MSL and HAT in metres
central_meridian = None # Central meridian for projection (optional)
zone = 56
import sys
if len(sys.argv) > 1:
    event_number = int(sys.argv[1])
else:    
    event_number = 51469    # the event number or the mux file name

event_number_list = [51469, 51392, 50863] # To piggy back multiple events

# Event Details:
# Event 1 (51469)
# Source Zone = New Hebrides
# Return Period = 10 000 years
# Wave height at 100 m = 2.3 m
#
# Event 2 (51392)
# Source Zone = New Hebrides
# Return Period = 5000 years
# Wave height at 100 m = 1.7 m
#
# Event 3 (50863)
# Source Zone = New Hebrides
# Return Period = 200 years
# Wave height at 100 m = 0.3 m

tide = 0                # Mean Sea Level = 0,
                        # Highest Astronomical Tide = 1.1 m for Gold Coast                        
alpha = 0.1             # smoothing parameter for mesh
friction = 0.01           # manning's friction coefficient
starttime = 0             # start time for simulation
finaltime = 80000         # final time for simulation

setup = 'final'         # This can be one of three values
                        #    trial - coarsest mesh, fast
                        #    basic - coarse mesh
                        #    final - fine mesh, slowest

#-------------------------------------------------------------------------------
# Output filename
#
# Your output filename should be unique between different runs on different data.
# The list of items below will be used to create a file in your output directory.
# Your user name and time+date will be automatically added.  For example,
#     [setup, tide, event_number]
# will result in a filename like
#     20090212_091046_run_final_0_27283_rwilson
#-------------------------------------------------------------------------------

output_comment = [setup, tide, event_number]

#-------------------------------------------------------------------------------
# Input Datayieldstep
#-------------------------------------------------------------------------------

# ELEVATION DATA
# Used in build_elevation.py
# Format for ascii grids, as produced in ArcGIS + a projection file
ascii_grid_filenames = []

# Format for point is x,y,elevation (with header)
point_filenames = []

# BOUNDING POLYGON - for data clipping and estimate of triangles in mesh
# Used in build_elevation.py
# Format for points easting,northing (no header)
bounding_polygon_filename = 'bounding_polygon.csv'
bounding_polygon_maxarea = 125000

# INTERIOR REGIONS -  for designing the mesh
# Used in run_model.py
# Format for points easting,northing (no header)                    
interior_regions_data = [['area_of_interest.csv', 500],
                         ['intermediate.csv', 25000]]

# LAND - used to set the initial stage/water to be offcoast only
# Used in run_model.py.  Format for points easting,northing (no header)
land_initial_conditions_filename = [['initial_conditions.csv', 0]]

# GAUGES - for creating timeseries at a specific point
# Used in get_timeseries.py.  
# Format easting,northing,name,elevation (with header)
gauges_filename = 'gauges.csv'

# BUILDINGS EXPOSURE - for identifying inundated houses
# Used in run_building_inundation.py
# Format latitude,longitude etc (geographic)
building_exposure_filename = '' # from NEXIS

# AREA OF IMAGES - Extent of each image to find out highest runup
# Headerr: easting, northing, id, value
# Used in get_runup.py
images_filename = 'images.csv'

# BOUNDING POLYGON - used in build_boundary.py and run_model.py respectively
# NOTE: when files are put together the points must be in sequence
# For ease go clockwise!
# Check the run_model.py for boundary_tags


# Thinned ordering file from Hazard Map (geographic)
# Format is index,latitude,longitude (with header)
urs_order_filename = 'urs_order.csv'

# Landward bounding points
# Format easting,northing (no header)
landward_boundary_filename = 'landward_boundary.csv'

# MUX input filename.
# If a meta-file from EventSelection is used, set 'multi-mux' to True.
# If a single MUX stem filename (*.grd) is used, set 'multi-mux' to False.
##mux_input_filename = event_number # to be found in event_folder
                                    # (ie boundaries/event_number/)
##multi_mux = False
mux_input_filename = 'event.list'
multi_mux = True

#-------------------------------------------------------------------------------
# Clipping regions for export to asc and regions for clipping data
# Final inundation maps should only be created in regions of the finest mesh
#-------------------------------------------------------------------------------




################################################################################
################################################################################
####         NOTE: NOTHING WOULD NORMALLY CHANGE BELOW THIS POINT.          ####
################################################################################
################################################################################

# Get system user and host names.
# These values can be used to distinguish between two similar runs by two
# different users or runs by the same user on two different machines.
user = get_user_name()
host = get_host_name()

# Environment variable names.
# The inundation directory, not the data directory.
ENV_INUNDATIONHOME = 'ANUGADATA'

#-------------------------------------------------------------------------------
# Output Elevation Data
#-------------------------------------------------------------------------------

# Output filename for elevation
# this is a combination of all the data generated in build_elevation.py
combined_elevation_basename = scenario_name + '_combined_elevation'

#-------------------------------------------------------------------------------
# Directory Structure
#-------------------------------------------------------------------------------

# determines time for setting up output directories
time = strftime('%Y%m%d_%H%M%S', localtime()) 
gtime = strftime('%Y%m%d_%H%M%S', gmtime()) 
build_time = time + '_build'
run_time = time + '_run_'

# create paths generated from environment variables.
home = join(os.getenv(ENV_INUNDATIONHOME), 'data') # Absolute path for data folder
    
# check various directories/files that must exist
anuga_folder = join(home, state, scenario_folder, 'anuga')
topographies_folder = join(anuga_folder, 'topographies')
polygons_folder = join(anuga_folder, 'polygons')
boundaries_folder = join(anuga_folder, 'boundaries')
output_folder = join(anuga_folder, 'outputs')
gauges_folder = join(anuga_folder, 'gauges')
event_folder = join(boundaries_folder, str(event_number))

#-------------------------------------------------------------------------------
# Location of input and output data
#-------------------------------------------------------------------------------

# Convert the user output_comment to a string for run_model.py
output_comment = ('_'.join([str(x) for x in output_comment if x != user])
                  + '_' + user)

# The absolute pathname of the all elevation, generated in build_elevation.py
combined_elevation = join(topographies_folder, combined_elevation_basename)


# The pathname for the urs order points, used within build_urs_boundary.py
if urs_order_filename:
    urs_order = join(boundaries_folder, urs_order_filename)

# The absolute pathname for the landward points of the bounding polygon,
# Used within run_model.py)
if landward_boundary_filename:
    landward_boundary = join(boundaries_folder, landward_boundary_filename)

# The absolute pathname for the .sts file, generated in build_boundary.py
event_sts = join(event_folder, scenario_name)

# The absolute pathname for the output folder names
# Used for build_elevation.py
output_build = join(output_folder, build_time) + '_' + str(user) 
# Used for run_model.py
output_run = join(output_folder, run_time) + output_comment 
# Used by post processing
output_run_time = join(output_run, scenario_name) 

# The absolute pathname of the mesh, generated in run_model.py
meshes = join(output_run, scenario_name) + '.msh'

# The absolute pathname for the gauges file
# Used for get_timeseries.py
if gauges_filename:
    gauges = join(gauges_folder, gauges_filename)       

# The absolute pathname for the building file
# Used for run_building_inundation.py
if building_exposure_filename:
    building_exposure = join(gauges_folder, building_exposure_filename)

# The absolute pathname for the image file
# Used for get_runup.py
if images_filename:
    images = join(polygons_folder, images_filename)