#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Wed May 11 10:45:08 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 salem
from misc.landmask import flagland
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
#ifile = 't_ref_max_FLOR_HistRCP45_tigercpu_intelmpi_18_576PE_5ens_1860-2100_SouthAsia.nc'
#ifile = 'precip_FLOR_HistRCP45_tigercpu_intelmpi_18_576PE_5ens_1860-2100_Pernambuco.nc'
#ifile = 'precip_AM2.5C360_amipHadISSTlong_chancorr_tigercpu_intelmpi_18_1080PE_1ens_1981-2010_Pernambuco.nc'
#ofile = ifile.replace('.nc', '_masked.nc')
ifiles = """
precip_AM2.5C360_amipHadISSTlong_chancorr_tigercpu_intelmpi_18_1080PE_10ens_1871-2019_Pernambuco.nc
precip_AM2.5C360_amipHadISSTlong_chancorr_tigercpu_intelmpi_18_1080PE_extend2020_10ens_2020-2020_Pernambuco.nc
precip_AM2.5C360_amipHadISSTlong_chancorr_tigercpu_intelmpi_18_1080PE_extend2021_10ens_2021-2021_Pernambuco.nc
""".split()
ofile = ifiles[0].replace('.nc', '_masked.nc').replace('1871-2019', '1871-2021')
if os.path.exists(ofile):
    da = xr.open_dataarray(ofile)
    print('[loaded]:', ofile)
else:
    #shapefile = 'mask_version2/mask_shapev2.shp'
    #shdf = salem.read_shapefile(shapefile)
    #da = xr.open_dataarray(ifile)
    da = xr.open_mfdataset(ifiles)['precip']
    #da = da.salem.subset(shape=shdf, margin=1)\
    #    .salem.roi(shape=shdf)
    da = da.where(flagland(da)>0.5)
    print('saving...')
    da.to_dataset().to_netcdf(ofile)
    print('[saved]:', ofile)

 
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    da.isel(ens=0, time=0).plot()
    
    #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()
    if 'notshowfig' in sys.argv:
        pass
    else:
        plt.show()