#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Mon May 20 13:11:12 EDT 2024
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, roll_lon
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
daname = get_kws_from_argv('daname', 't_surf')
case_2k = True if '2k' in sys.argv else False
years = range(101, 150+1)
ifiles = [f'/tigress/wenchang/MODEL_OUT/AM2.1/CTL1990_tigercpu_intelmpi_18_30PE/POSTP/{year:04d}0101.atmos_month.nc'
    for year in years]
da = xr.open_mfdataset(ifiles)[daname].load().mean('time', keep_attrs=True)
da0 = da
if case_2k:
    ifiles = [f'/tigress/wenchang/MODEL_OUT/AM2.1/CTL1990_plus2K_tropATL_tigercpu_intelmpi_18_30PE/POSTP/{year:04d}0101.atmos_month.nc'
        for year in years]
    da = xr.open_mfdataset(ifiles)[daname].load().mean('time', keep_attrs=True)
else:
    ifiles = [f'/tigress/wenchang/MODEL_OUT/AM2.1/CTL1990_plusP5K_tropATL_tigercpu_intelmpi_18_30PE/POSTP/{year:04d}0101.atmos_month.nc'
        for year in years]
    da = xr.open_mfdataset(ifiles)[daname].load().mean('time', keep_attrs=True)

 
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    from geoplots import mapplot
    fig,ax = plt.subplots()
    cmap = 'BrBG' if daname == 'precip' else None
    daa = (da - da0).assign_attrs(units=da.attrs['units']).pipe(roll_lon)
    if daname == 'precip': daa = (daa*24*3600).assign_attrs(units='mm/day') #units convert
    daa.plot.contourf(levels=21, cmap=cmap)

    ax.set_xticks(range(-180,181,60))
    mapplot()
    ax.set_xlabel('')
    ax.set_ylabel('')
    title = f'{daname} anomaly from AM2.1 $+$0.5K experiment'
    if case_2k: title = title.replace('0.5K', '2K')
    ax.set_title(title)
    
    #savefig
    if 'savefig' in sys.argv or 's' in sys.argv:
        figname = __file__.replace('.py', f'__{daname}.png')
        if case_2k: figname = figname.replace('.png', '_2K.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()