#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Tue Mar 29 12:10:18 EDT 2022
if __name__ == '__main__':
    import sys
    from misc.timer import Timer
    tt = Timer('start ' + ' '.join(sys.argv))
import sys, os.path, os, glob, datetime
import xarray as xr, numpy as np, pandas as pd, matplotlib.pyplot as plt
#more imports
import geoxarray
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
ifiles = '''
data_Ts_AM4urban_wasteCool_0urban_amip_5ens_1870-2020.nc
data_Ts_AM4urban_wasteCool_amip_5ens_1870-2020.nc
data_Ts_AM4urban_wasteCool_urbanNAonly_amip_5ens_1870-2020.nc
data_Ts_AM4urban_wasteCool_urbanASonly_amip_5ens_1870-2020.nc
'''.split()
for ifile in ifiles:
    ofile = ifile.replace('data_Ts', 'nino34JJA')
    if os.path.exists(ofile):
        print('[exits]:', ofile)
        continue
    da = xr.open_dataarray(ifile)
    da = da.sel(lon=slice(360-170, 360-120), lat=slice(-5, 5)).geo.fldmean() #nino34 index
    da = da.isel(time=(da.time.dt.month>=6)&(da.time.dt.month<=8)).groupby('time.year').mean('time') #JJA mean

    #save
    da.to_dataset(name='nino34JJA').to_netcdf(ofile)
    print('[saved]:', ofile)

if __name__ == '__main__':
    #from wyconfig import * #my plot settings
    
    #savefig
    if len(sys.argv)>1 and 'savefig' in sys.argv[1:]:
        figname = __file__.replace('.py', f'.png')
        if 'overwritefig' in sys.argv[1:]:
            wysavefig(figname, overwritefig=True)
        else:
            wysavefig(figname)
    tt.check(f'**Done**')
    print()
    plt.show()