feat: Added Podcast Feature and its actually fast.

- Fully Async

surfsense_backend/alembic/versions/6_change_podcast_content_to_transcript.py

@@ -0,0 +1,44 @@
+"""Change podcast_content to podcast_transcript with JSON type
+
+Revision ID: 6
+Revises: 5
+Create Date: 2023-08-15 00:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import JSON
+
+
+# revision identifiers, used by Alembic.
+revision: str = '6'
+down_revision: Union[str, None] = '5'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Drop the old column and create a new one with the new name and type
+    # We need to do this because PostgreSQL doesn't support direct column renames with type changes
+    op.add_column('podcasts', sa.Column('podcast_transcript', JSON, nullable=False, server_default='{}'))
+    
+    # Copy data from old column to new column
+    # Convert text to JSON by storing it as a JSON string value
+    op.execute("UPDATE podcasts SET podcast_transcript = jsonb_build_object('text', podcast_content) WHERE podcast_content != ''")
+    
+    # Drop the old column
+    op.drop_column('podcasts', 'podcast_content')
+
+
+def downgrade() -> None:
+    # Add back the original column
+    op.add_column('podcasts', sa.Column('podcast_content', sa.Text(), nullable=False, server_default=''))
+    
+    # Copy data from JSON column back to text column
+    # Extract the 'text' field if it exists, otherwise use empty string
+    op.execute("UPDATE podcasts SET podcast_content = COALESCE((podcast_transcript->>'text'), '')")
+    
+    # Drop the new column
+    op.drop_column('podcasts', 'podcast_transcript') 

surfsense_backend/alembic/versions/7_remove_is_generated_column.py

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+"""Remove is_generated column from podcasts table
+
+Revision ID: 7
+Revises: 6
+Create Date: 2023-08-15 01:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '7'
+down_revision: Union[str, None] = '6'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Drop the is_generated column
+    op.drop_column('podcasts', 'is_generated')
+
+
+def downgrade() -> None:
+    # Add back the is_generated column with its original constraints
+    op.add_column('podcasts', sa.Column('is_generated', sa.Boolean(), nullable=False, server_default='false'))