feat: add vonage telephony (#35)

* refactor: telephony integration

* feat: add vonage telephony

api/alembic/versions/a57d25b75117_add_provider_info_to_cost_info.py

@@ -0,0 +1,122 @@
+"""add_provider_info_to_cost_info
+
+Revision ID: a57d25b75117
+Revises: 982ec8e434be
+Create Date: 2025-10-21 12:28:06.053318
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from alembic_postgresql_enum import TableReference
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'a57d25b75117'
+down_revision: Union[str, None] = '982ec8e434be'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """
+    Add provider info to existing cost_info JSON for backward compatibility.
+    This migration:
+    1. Adds 'vonage' to workflow_run_mode enum
+    2. Adds 'provider' field to cost_info for existing records
+    3. Migrates TWILIO_CONFIGURATION key to TELEPHONY_CONFIGURATION
+    """
+    
+    # Add 'vonage' to the workflow_run_mode enum using sync_enum_values like other migrations
+    op.sync_enum_values(
+        enum_schema="public",
+        enum_name="workflow_run_mode",
+        new_values=["twilio", "stasis", "webrtc", "smallwebrtc", "VOICE", "CHAT", "vonage"],
+        affected_columns=[
+            TableReference(
+                table_schema="public", table_name="workflow_runs", column_name="mode"
+            )
+        ],
+        enum_values_to_rename=[],
+    )
+    
+    # Update workflow_runs to add provider info based on mode
+    # Use jsonb_set() to add provider field while preserving existing data
+    op.execute("""
+        UPDATE workflow_runs 
+        SET cost_info = jsonb_set(
+            CASE 
+                WHEN cost_info IS NULL OR cost_info::text = '{}' 
+                THEN '{}'::jsonb 
+                ELSE cost_info::jsonb 
+            END,
+            '{provider}', 
+            '"twilio"'::jsonb,
+            true
+        )::json
+        WHERE mode = 'twilio' 
+          AND (cost_info IS NULL OR cost_info::text NOT LIKE '%provider%')
+    """)
+    
+    op.execute("""
+        UPDATE workflow_runs 
+        SET cost_info = jsonb_set(
+            CASE 
+                WHEN cost_info IS NULL OR cost_info::text = '{}' 
+                THEN '{}'::jsonb 
+                ELSE cost_info::jsonb 
+            END,
+            '{provider}', 
+            '"vonage"'::jsonb,
+            true
+        )::json
+        WHERE mode = 'vonage' 
+          AND (cost_info IS NULL OR cost_info::text NOT LIKE '%provider%')
+    """)
+    
+    # Simply rename the key from TWILIO_CONFIGURATION to TELEPHONY_CONFIGURATION
+    # Keep the same single-provider format
+    op.execute("""
+        UPDATE organization_configurations
+        SET key = 'TELEPHONY_CONFIGURATION'
+        WHERE key = 'TWILIO_CONFIGURATION';
+    """)
+    
+    print("Migration complete: Added vonage to enum, provider info to cost_info, and renamed configuration key")
+
+
+def downgrade() -> None:
+    """
+    Remove provider info and revert key name.
+    Revert enum to previous state (removing 'vonage').
+    """
+    
+    # Remove provider field from cost_info while preserving other data
+    op.execute("""
+        UPDATE workflow_runs 
+        SET cost_info = (cost_info::jsonb - 'provider')::json
+        WHERE cost_info::text LIKE '%provider%'
+    """)
+    
+    # Revert key name
+    op.execute("""
+        UPDATE organization_configurations
+        SET key = 'TWILIO_CONFIGURATION'
+        WHERE key = 'TELEPHONY_CONFIGURATION';
+    """)
+    
+    # Revert enum to previous state
+    op.sync_enum_values(
+        enum_schema="public",
+        enum_name="workflow_run_mode",
+        new_values=["twilio", "stasis", "webrtc", "smallwebrtc", "VOICE", "CHAT"],
+        affected_columns=[
+            TableReference(
+                table_schema="public", table_name="workflow_runs", column_name="mode"
+            )
+        ],
+        enum_values_to_rename=[],
+    )
+    
+    print("Downgrade complete: Removed provider info and reverted key name")