"""
We are using unittest for troggle.

Note that the database has not been parsed from the source files when these tests are run,
so any path that relies on data being in the database will fail.

The simple redirections to files which exist, e.g. in
/expoweb/
/expofiles/
/expofiles/documents/
etc. will test fine.

But paths like this:
/survey_scans/
/caves/
which rely on database resolution will fail unless a fixture has been set up for
them.

https://docs.djangoproject.com/en/3.0/topics/testing/tools/
"""
import unittest
import re
import subprocess

from django.test import TestCase, SimpleTestCase, Client

class SimpleTest(SimpleTestCase):
    def test_test_setting(self):
        from django.conf import settings        
        self.assertEqual(settings.EMAIL_BACKEND, 'django.core.mail.backends.locmem.EmailBackend')
        import troggle.settings as settings
    def test_import_TroggleModel(self):
        from troggle.core.models.troggle import TroggleModel
    def test_import_Cave(self):
        from troggle.core.models.caves import Cave
    def test_import_parsers_surveys(self):
        #from PIL import Image
        from troggle.core.utils import save_carefully
        from functools import reduce
    def test_import_parsers_survex(self):
        import troggle.settings as settings
        import troggle.core.models.troggle as models
        import troggle.core.models.survex as models_survex
        import troggle.core.models.caves as models_caves
        from troggle.parsers.people import GetPersonExpeditionNameLookup
        from troggle.core.views.other import frontpage
        from troggle.core.views.caves import ent, cavepage
        from troggle.core.views import scans, drawings, other, caves, statistics, survex, uploads
    def test_import_views_uploads(self):
        from troggle.core.views.uploads import dwgupload, scanupload
    def test_import_parsers_QMs(self):
        from troggle.core.models.caves import QM, Cave, LogbookEntry
    def test_import_parsers_people(self):
        from html import unescape
        from unidecode import unidecode
    def test_import_parsers_logbooks(self):
        from django.template.defaultfilters import slugify
        from django.utils.timezone import get_current_timezone, make_aware
        from troggle.core.models.troggle import DataIssue, Expedition
        from troggle.core.models.caves import Cave, LogbookEntry, PersonTrip
        from parsers.people import GetPersonExpeditionNameLookup
    def test_import_core_views_caves(self):
        from django.http import HttpResponse, HttpResponseRedirect
        from django.shortcuts import get_object_or_404, render
        import troggle.core.views.expo 
        from troggle.core.models.troggle import Expedition
        from troggle.core.models.caves import CaveSlug, Cave, CaveAndEntrance, QM, EntranceSlug, Entrance, Area, SurvexStation
        from troggle.core.forms import CaveForm, CaveAndEntranceFormSet, EntranceForm, EntranceLetterForm
        from troggle.core.views.auth import login_required_if_public
        from django.contrib.auth.decorators import login_required
        from django.conf import settings
    def test_import_parsers_mix(self):
        from troggle.parsers.logbooks import GetCaveLookup
        import troggle.settings
        import troggle.parsers.caves
        import troggle.parsers.people
        import troggle.parsers.drawings
        import troggle.parsers.scans
        import troggle.parsers.logbooks
        import troggle.parsers.QMs
        import troggle.parsers.survex 
    def test_import_imports(self):
        from django.core import management
        from django.db import connection, close_old_connections, connections
        from django.contrib.auth.models import User
        from django.http import HttpResponse
        from django.urls import reverse

    def test_import_urls(self):
        from django.conf import settings
        from django.conf.urls import url, include
        from django.contrib import admin
        from django.contrib import auth
        from django.urls import reverse, resolve
        from django.views.generic.base import RedirectView 
        from django.views.generic.edit import UpdateView
        from django.views.generic.list import ListView
        from troggle.core.views import other, caves, statistics, survex
        from troggle.core.views.auth import expologin, expologout
        from troggle.core.views.caves import ent, cavepage
        from troggle.core.views.expo import expofiles_redirect, expofilessingle, expopage, editexpopage, mediapage, map, mapfile
        from troggle.core.views.logbooks import expedition, personexpedition, Expeditions_tsvListView, Expeditions_jsonListView
        from troggle.core.views.logbooks import get_logbook_entries, logbookentry, logbookSearch
        from troggle.core.views.logbooks import notablepersons, person, get_people
        from troggle.core.views.other import controlpanel
        from troggle.core.views.prospect import prospecting
        from troggle.core.views.prospect import prospecting_image
        from troggle.core.views.statistics import pathsreport, stats, dataissues
        from troggle.core.views.survex import survexcaveslist, survexcavesingle, svx

class SubprocessTest(TestCase):

    @classmethod
    def setUpTestData(cls):
        pass

    def setUp(self):
        pass

    def tearDown(self):
        pass

    def test_utf8(self):
        '''Expects that utf8 is the default encoding when opening files
        '''
        import sys
        import locale
        self.assertTrue( sys.getdefaultencoding() == "utf-8", f'{sys.getdefaultencoding()} - UTF8 error in getdefaultencoding')
        self.assertTrue( sys.getfilesystemencoding() == "utf-8", f'{sys.getfilesystemencoding()} - UTF8 error in getfilesystemencoding')
        self.assertTrue( locale.getdefaultlocale()[1] == "UTF-8", f'{locale.getdefaultlocale()} - UTF8 error in locale.getdefaultlocale')
        self.assertTrue( locale.getpreferredencoding() == "UTF-8", f'{locale.getpreferredencoding()} - UTF8 error in locale.getpreferredencoding')
        
    def test_installs(self):
        ''' Expects external software installed: cavern, survexport, git
        (but not whether it actually works)
        '''
        import troggle.settings as settings

        for i in [settings.CAVERN, settings.SURVEXPORT, settings.GIT]:
            # Define command as string and then split() into list format
            cmd = f'which {i}'.split()
            try:
                sp = subprocess.check_call(cmd, shell=False)
            except subprocess.CalledProcessError:
                self.assertTrue( False, f'no {i} installed')

    def test_repos_git_status(self):
        ''' Expects clean git repos with no added files and no merge failures
        '''
        from pathlib import Path
        import troggle.settings as settings
        TROGGLE_PATH = Path(settings.REPOS_ROOT_PATH) / "troggle"
        for cwd in [settings.SURVEX_DATA, settings.EXPOWEB, settings.DRAWINGS_DATA, TROGGLE_PATH]: 
            sp = subprocess.run([settings.GIT, "status"], cwd=cwd, capture_output=True, text=True)
            scwd = str(cwd)
            # print(scwd + ":\n\n#" + sp.stderr + '\n\n#' + sp.stdout  + '\n\n# return code: ' + str(sp.returncode))
            if sp.returncode != 0:
                print(scwd + ":\n\n" + sp.stderr + '\n\n' + sp.stdout  + '\n\nreturn code: ' + str(sp.returncode))
            self.assertTrue( sp.returncode == 0, f'{scwd} - git is unhappy')

            content = sp.stdout
            ph = r'Your branch is up[ -]to[ -]date'
            phmatch    = re.search(ph, content)
            self.assertIsNotNone(phmatch, f"{scwd} - Failed to find expected git output: '" + ph +"'")

            ph1 = r'no changes added to commit'
            phmatch1    = re.search(ph1, content)
            ph2 = r'nothing to commit'
            phmatch2    = re.search(ph2, content)
            phmatch = phmatch1 or phmatch2
            self.assertIsNotNone(phmatch, f"{scwd} - Failed to find expected git output: {ph1} or {ph2}")