revert db upgrade code

openlp/plugins/bibles/lib/upgrade.py

@@ -24,6 +24,8 @@ The :mod:`upgrade` module provides a way for the database and schema that is the
 """
 import logging
 
+from sqlalchemy import delete, func, insert, select
+
 log = logging.getLogger(__name__)
 __version__ = 1
 
@@ -34,4 +36,126 @@ def upgrade_1(session, metadata):
 
     This upgrade renames a number of keys to a single naming convention.
     """
-    log.info('No upgrades to perform')
+    metadata_table = metadata.tables['metadata']
+    # Copy "Version" to "name" ("version" used by upgrade system)
+    session.execute(insert(metadata_table).values(
+        key='name',
+        value=select(
+            [metadata_table.c.value],
+            metadata_table.c.key == 'Version'
+        ).as_scalar()
+    ))
+    # Copy "Copyright" to "copyright"
+    session.execute(insert(metadata_table).values(
+        key='copyright',
+        value=select(
+            [metadata_table.c.value],
+            metadata_table.c.key == 'Copyright'
+        ).as_scalar()
+    ))
+    # Copy "Permissions" to "permissions"
+    session.execute(insert(metadata_table).values(
+        key='permissions',
+        value=select(
+            [metadata_table.c.value],
+            metadata_table.c.key == 'Permissions'
+        ).as_scalar()
+    ))
+    # Copy "Bookname language" to "book_name_language"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'Bookname language'
+        )
+    ).scalar()
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='book_name_language',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'Bookname language'
+            ).as_scalar()
+        ))
+    # Copy "download source" to "download_source"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'download source'
+        )
+    ).scalar()
+    log.debug('download source: %s', value_count)
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='download_source',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'download source'
+            ).as_scalar()
+        ))
+    # Copy "download name" to "download_name"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'download name'
+        )
+    ).scalar()
+    log.debug('download name: %s', value_count)
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='download_name',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'download name'
+            ).as_scalar()
+        ))
+    # Copy "proxy server" to "proxy_server"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'proxy server'
+        )
+    ).scalar()
+    log.debug('proxy server: %s', value_count)
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='proxy_server',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'proxy server'
+            ).as_scalar()
+        ))
+    # Copy "proxy username" to "proxy_username"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'proxy username'
+        )
+    ).scalar()
+    log.debug('proxy username: %s', value_count)
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='proxy_username',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'proxy username'
+            ).as_scalar()
+        ))
+    # Copy "proxy password" to "proxy_password"
+    value_count = session.execute(
+        select(
+            [func.count(metadata_table.c.value)],
+            metadata_table.c.key == 'proxy password'
+        )
+    ).scalar()
+    log.debug('proxy password: %s', value_count)
+    if value_count > 0:
+        session.execute(insert(metadata_table).values(
+            key='proxy_password',
+            value=select(
+                [metadata_table.c.value],
+                metadata_table.c.key == 'proxy password'
+            ).as_scalar()
+        ))
+    session.execute(delete(metadata_table)\
+        .where(metadata_table.c.key == 'dbversion'))
+    session.commit()