Add some methods/attrs to import handlers, for exposing in web app

not complete but a good start

rattail/app.py

@@ -62,6 +62,9 @@ class AppHandler(object):
     def __init__(self, config):
         self.config = config
 
+    def get_title(self, default=None):
+        return self.config.app_title(default=default)
+
     def get_autocompleter(self, key, **kwargs):
         """
         Returns a new :class:`~rattail.autocomplete.base.Autocompleter`
@@ -154,6 +157,12 @@ class AppHandler(object):
     # TODO: is it helpful to expose this? or more confusing?
     get_mail_handler = get_email_handler
 
+    def all_import_handlers(self, **kwargs):
+        from rattail.util import load_entry_points
+
+        handlers = load_entry_points('rattail.importing')
+        return list(handlers.values())
+
     def get_membership_handler(self, **kwargs):
         """
         Returns a reference to the configured Membership Handler.

rattail/commands/importing.py

@@ -214,7 +214,7 @@ class ImportSubcommand(Subcommand):
                             "Note that this flag is ignored if --make-batches is specified.")
 
     def run(self, args):
-        log.info("begin `%s %s` for data models: %s",
+        log.debug("begin `%s %s` for data models: %s",
                   self.parent_name,
                   self.name,
                   ', '.join(args.models) if args.models else "(ALL)")

rattail/importing/handlers.py

@@ -99,6 +99,34 @@ class ImportHandler(object):
         for key, value in kwargs.items():
             setattr(self, key, value)
 
+    @classmethod
+    def get_key(cls):
+        return 'to_{}.from_{}'.format(cls.local_key, cls.host_key)
+
+    @classmethod
+    def get_spec(cls):
+        return '{}:{}'.format(cls.__module__, cls.__name__)
+
+    @classmethod
+    def get_generic_host_title(cls):
+        if hasattr(cls, 'generic_host_title'):
+            return cls.generic_host_title
+        return "TODO: define `{}.generic_host_title`".format(cls.__name__)
+
+    @classmethod
+    def get_generic_local_title(cls):
+        if hasattr(cls, 'generic_local_title'):
+            return cls.generic_local_title
+        return "TODO: define `{}.generic_local_title`".format(cls.__name__)
+
+    @classmethod
+    def get_generic_title(cls):
+        if hasattr(cls, 'generic_title'):
+            return cls.generic_title
+        host_title = cls.get_generic_host_title()
+        local_title = cls.get_generic_local_title()
+        return "{} -> {}".format(host_title, local_title)
+
     def get_importers(self):
         """
         Returns a dict of all available importers, where the keys are model

rattail/importing/rattail.py

@@ -44,6 +44,8 @@ class FromRattailHandler(FromSQLAlchemyHandler):
     """
     Base class for import handlers which target a Rattail database on the local side.
     """
+    host_key = 'rattail'
+    generic_host_title = "Rattail"
 
     @property
     def host_title(self):
@@ -57,6 +59,8 @@ class ToRattailHandler(ToSQLAlchemyHandler):
     """
     Base class for import handlers which target a Rattail database on the local side.
     """
+    generic_local_title = "Rattail"
+    local_key = 'rattail'
 
     @property
     def local_title(self):

rattail/importing/versions.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2017 Lance Edgar
+#  Copyright © 2010-2021 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -39,6 +39,8 @@ class FromRattailToRattailVersions(FromRattailHandler, ToRattailHandler):
     """
     Handler for Rattail -> Rattail "versions" data import
     """
+    local_key = 'rattail_versions'
+    generic_local_title = "Rattail (Versions)"
 
     @property
     def local_title(self):

setup.py

@@ -239,6 +239,9 @@ rattail.trainwreck = rattail.trainwreck.config:TrainwreckConfig
 new-report = rattail.features.newreport:NewReportFeature
 new-table = rattail.features.newtable:NewTableFeature
 
+[rattail.importing]
+to_rattail.from_versions = rattail.importing.versions:FromRattailToRattailVersions
+
 [rattail.reports]
 customer_mailing = rattail.reporting.customer_mailing:CustomerMailing