#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Wed Sep 20 10:55:27 EDT 2023
if __name__ == '__main__':
    import sys,os
    from misc.timer import Timer
    tt = Timer(f'[{os.getcwd()}] 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
wython = '/tigress/wenchang/wython'
if wython not in sys.path: sys.path.append(wython); print('added to python path:', wython)
from misc import get_kws_from_argv
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
model = 'HIRAM'
minWindmax = 33 if '33' in sys.argv else 17 #default is 17m/s
yearspan = range(1981,2010)
ofile = f'TS{minWindmax}_scale_factor_{model}.nc'
#model
ifile = f'tc_counts.TS{minWindmax}.5ens.1971-2018.yearly.nc' 
print(ifile)
ds = xr.open_dataset(ifile)
    
#obs
idir = '/tigress/wenchang/data/ibtracs/v04r00/analysis/v2'
ifile = f'{idir}/IBTrACS.ALL.v04r00.2022-01-25.counts.TS{minWindmax}.1980-2021.yearly.nc'
print(ifile)
ds0 = xr.open_dataset(ifile)
    
if os.path.exists(ofile):
    ds_scale = xr.open_dataset(ofile)
    print('[loaded]:', ofile)
else:
    ds_scale = ds0.sel(year=yearspan).mean('year')/ds.sel(year=yearspan).mean(['year', 'en'])
    ds_scale.to_netcdf(ofile)
    print('[saved]:', ofile)
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    basin = get_kws_from_argv('basin', 'global')
    ds0[basin].plot(color='k', label=f'IBTrACS TS{minWindmax}')
    ds[basin].mean('en').plot(label=f'{model} raw')
    scale_factor = ds_scale[basin].item()
    ds[basin].mean('en').pipe(lambda x: x*scale_factor).plot(label=f'{model} scaled (by {scale_factor:.2g})', ls='--')

    ax = plt.gca()
    ax.legend()
    ax.set_title(f'{basin} TS{minWindmax} counts in {model} and IBTrACS')
    ax.set_ylabel('#')
    
    #savefig
    if 'savefig' in sys.argv or 's' in sys.argv:
        figname = __file__.replace('.py', f'__TS{minWindmax}_{model}_{basin}.png')
        if 'overwritefig' in sys.argv or 'o' in sys.argv:
            wysavefig(figname, overwritefig=True)
        else:
            wysavefig(figname)
    tt.check(f'**Done**')
    print()
    if 'notshowfig' in sys.argv or 'n' in sys.argv:
        pass
    else:
        if 'plt' in globals(): plt.show()