# Wrapper for the generic functions written in python from 'generic_tools.py'
# L. Fita, LMD. June 2016

from optparse import OptionParser
import numpy as np
import datetime as dt
import generic_tools as gen

main = 'generic_tools.py'
errormsg = 'ERROR -- error -- ERROR -- error'
warnmsg = 'WARNING -- warning --WARNING -- warning'
import os
import re

# Character to split passed values
cS = ','
# Character to split serie of values
cV = '@'
# List of available operations
operations=['grid_combinations', 'PolyArea', 'rmNOnum',                              \
  'significant_decomposition', 'squared_radial',                                     \
  'unitsDate']

## e.g. # generic.py -o grid_combinations -S 1,2
## e.g. # generic.py -o PolyArea -S -0.5@0.5@0.5@-0.5,0.5@0.5@-0.5@-0.5
## e.g. # generic.py -o rmNOnum -S LMD123IPSL
## e.g. # generic.py -o significant_decomposition -S 3.576,-2
## e.g. # generic.py -o secondsDate -S '19490101000000,19760217082932,second'
## e.g. # generic.py -o squared_radial -S 3

operationnames = "'" + gen.numVector_String(operations, "', '") + "'"
valuesinf = "'" + cS + "' list of values to use according to the operation ('" + cV +\
  "' for list of values)"

parser = OptionParser()
parser.add_option("-o", "--operation", type='choice', dest="operation", 
  choices=operations, help="operation to make: " + operationnames, metavar="OPER")
parser.add_option("-S", "--valueS (when applicable)", dest="values", 
  help=valuesinf, metavar="VALUES")
(opts, args) = parser.parse_args()

#######    #######
## MAIN
    #######
oper = opts.operation

if oper == 'list_operations':
# From: http://www.diveintopython.net/power_of_introspection/all_together.html
    object = gen
    for opern in operations:
        if  opern != 'list_operations': 
            print opern + '_______ ______ _____ ____ ___ __ _'
            print getattr(object, opern).__doc__

elif oper == 'grid_combinations':
    Nvals = 2
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.grid_combinations.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.grid_combinations.__doc__
            quit(-1)

        print gen.grid_combinations(np.int(vals[0]), np.int(vals[1]))

elif oper == 'PolyArea':
    Nvals = 2
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.PolyArea.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.PolyArea.__doc__
            quit(-1)
        xvals = np.array(vals[0].split(cV), dtype=np.float)
        yvals = np.array(vals[1].split(cV), dtype=np.float)

        print gen.PolyArea(xvals, yvals)

elif oper == 'rmNOnum':
    Nvals = 1
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.rmNOnum.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.rmNOnum.__doc__
            quit(-1)
        print gen.rmNOnum(vals[0])

elif oper == 'significant_decomposition':
    Nvals = 2
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.significant_decomposition.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.significant_decomposition.__doc__
            quit(-1)
        print gen.significant_decomposition(np.float(vals[0]), int(vals[1]))

elif oper == 'squared_radial':
    Nvals = 1
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.squared_radial.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.squared_radial.__doc__
            quit(-1)
        print gen.squared_radial(int(vals[0]))

elif oper == 'unitsDate':
    Nvals = 3
    vals = opts.values.split(cS)
    if vals[0] == 'h':
        print gen.unitsDate.__doc__
        quit(-1)
    else:
        if len(vals) != Nvals:
            print errormsg
            print '  ' + main + ": operation '" + oper + "' requires", Nvals, 'and', \
              len(vals), ' has passed!!'
            print gen.unitsDate.__doc__
            quit(-1)
        print gen.unitsDate(vals[0], vals[1], vals[2])