import click,pytest
import zipfile,urllib,os,shutil
from click.testing import CliRunner
from flaskbb.cli import main as cli_main
from flaskbb import plugins
from flaskbb.extensions import db
from importlib import import_module
def test_new_plugin(tmpdir,application,monkeypatch):
    runner=CliRunner()
    #download the cookiecutter file to use locally (bypasses prompt about re-cloning)
    zipfilename=str(tmpdir.join('cookiecutter.zip'))
    urllib.urlretrieve('https://github.com/sh4nks/cookiecutter-flaskbb-plugin/archive/master.zip', zipfilename)
    with zipfile.ZipFile(zipfilename) as zf:
        zf.extractall(str(tmpdir))
    cookiecutterpath = tmpdir.join('cookiecutter-flaskbb-plugin-master')

    tmp_plugin_folder=str(tmpdir.join('plugin_folder'))
    os.mkdir(tmp_plugin_folder)
    monkeypatch.setattr(cli_main,'create_app',lambda s: application)
    monkeypatch.setattr(application.extensions['plugin_manager'],'plugin_folder',tmp_plugin_folder)
    input='\n'.join([
    'Test Name',
    'someone@nowhere.com',
    'Testing Plugin',
    '',
    'TestingPlugin',
    'Straightforward Test Plugin',
    'www.example.com',
    '1.0.0'])


    result=runner.invoke(cli_main.flaskbb,['plugins','new','testplugin','--template',str(cookiecutterpath)],input=input)
    assert result.exit_code == 0
    plugin_dir = os.path.join(application.extensions['plugin_manager'].plugin_folder, 'testing_plugin')
    assert os.path.exists(plugin_dir)
    assert os.path.isdir(plugin_dir)
    #add the temporary folder to the plugins path so import flaskbb.plugins.test_plugin works as expected
    monkeypatch.setattr(plugins,'__path__',plugins.__path__+[tmp_plugin_folder])
    assert import_module('flaskbb.plugins.testing_plugin').__plugin__=='TestingPlugin'

def test_migrate_plugin(tmpdir,monkeypatch,application):

    pluginmanager = application.extensions['plugin_manager']
    orig_plugin_folder=pluginmanager.plugin_folder
    tmp_plugin_folder = str(tmpdir.join('plugin_folder'))
    os.mkdir(tmp_plugin_folder)
    shutil.copytree(os.path.join(orig_plugin_folder,'_migration_environment'),os.path.join(tmp_plugin_folder,'_migration_environment'))
    os.mkdir(os.path.join(tmp_plugin_folder,'testplugin'))
    with open(os.path.join(tmp_plugin_folder,'testplugin','__init__.py'),'w') as pyfile:
        pyfile.write('\r\n'.join([
        "from flaskbb.plugins import FlaskBBPlugin",
        "from flaskbb.extensions import db",
        "class TestPlugin(FlaskBBPlugin):",
        "    settings_key='testplugin'",
        "    def somequery(self):",
        "        TestModel.query.all()",
        "class TestModel(db.Model):",
        "    __tablename__='testtable'",
        "    testkey=db.Column(db.Integer,primary_key=True)",
        "",
        "__plugin__='TestPlugin'",
        ]))
    import json
    jsoninfo={
        "identifier": "testplugin",
        "name": "TestPlugin",
        "author": "sh4nks",
        "website": "http://flaskbb.org",
        "license": "BSD",
        "description": "A Test Plugin for FlaskBB",
        "version": "0.1"
    }
    with open(os.path.join(tmp_plugin_folder,'testplugin','info.json'),'w') as jsonfile:
        json.dump(jsoninfo,jsonfile)


    monkeypatch.setattr(cli_main, 'create_app', lambda s: application)

    monkeypatch.setattr(pluginmanager, 'plugin_folder', tmp_plugin_folder)
    # add the temporary folder to the plugins path so import flaskbb.plugins.test_plugin works as expected
    monkeypatch.setattr(plugins, '__path__', plugins.__path__ + [tmp_plugin_folder])
    pluginmanager._plugins=None
    pluginmanager._all_plugins = None
    pluginmanager._available_plugins = dict()
    pluginmanager._found_plugins = dict()
    pluginmanager.setup_plugins()
    assert 'testplugin' in pluginmanager.plugins
    versionsdir=os.path.join(tmp_plugin_folder,'testplugin','migration_versions')
    assert not os.path.exists(versionsdir)
    testplugin=pluginmanager.plugins['testplugin']
    with application.app_context():
        testplugin.migrate()
        assert os.path.exists(versionsdir)
        dirlist = os.listdir(versionsdir)
        assert dirlist
        dirlist=[os.path.join(versionsdir,d) for d in dirlist if d.endswith('.py')]
        for d in dirlist:
            with open(d,'r') as f:
                output='\n'.join([l for l in f])

        assert 'testtable' in output
        with pytest.raises(Exception,message='Should not be able to run migrations twice'):
             testplugin.migrate()
        with pytest.raises(Exception,message='Operations should fail as model not yet registered'):
             testplugin.somequery()
        testplugin.upgrade_database()