import os
import unittest
from astropy.io import fits

from csst_dfs_api_local.ifs import RefFitsApi

class IFSFitsTestCase(unittest.TestCase):

    def setUp(self):
        self.api = RefFitsApi()

    def test_find(self):
        recs = self.api.find(exp_time=('2021-03-19 13:42:22', '2021-03-19 15:28:00'), ref_type=RefFitsApi.REF_FITS_FLAT)
        print('find:', recs)
        assert len(recs) > 1

        recs = self.api.find()
        print('=' * 80)
        print('find:', recs)
        assert len(recs) > 1

    def test_read(self):
        recs = self.api.find(file_name='CCD2_Flat_img.fits')
        print("The full path: ", os.path.join(self.api.root_dir, recs[0]['file_path']))

        file_segments = self.api.read(file_path=recs[0]['file_path'])
        file_bytes = b''.join(file_segments)
        hdul = fits.HDUList.fromstring(file_bytes)
        print(hdul.info())
        hdr = hdul[0].header
        print(repr(hdr))      

    def test_update_status(self):
        recs = self.api.find(file_name='CCD2_Flat_img.fits')
        self.api.update_status(fits_id=recs[0]['id'],status=1)
        rec = self.api.get(fits_id=recs[0]['id'])
        assert rec['status'] == 1

    def test_write(self):
        recs = self.api.write(file_path='/opt/temp/csst_ifs/CCD3_Flat_img.fits')
        recs = self.api.find(file_name='CCD3_Flat_img.fits')
        rec = self.api.get(fits_id=recs[0]['id'])
        print(rec)