Jul 10 - Update codes to catch up with the single tenant project (Medium)

2026-07-10 12:58:57 -04:00
parent e41998b561
commit aa749107c7
12 changed files with 815 additions and 68 deletions
@@ -0,0 +1,62 @@
+"""Add support_chat_sessions, support_chat_messages, support_knowledge (phase40)."""
+from alembic import op
+import sqlalchemy as sa
+
+revision      = 'phase40_support_chat_kb'
+down_revision = 'phase39_issue_handler_type'
+branch_labels = None
+depends_on    = None
+
+
+def _table_exists(conn, table):
+    row = conn.execute(sa.text("""
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES
+        WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = :t
+    """), {'t': table}).scalar()
+    return bool(row)
+
+
+def upgrade():
+    conn = op.get_bind()
+
+    if not _table_exists(conn, 'support_chat_sessions'):
+        op.create_table(
+            'support_chat_sessions',
+            sa.Column('id',          sa.Integer, primary_key=True, autoincrement=True),
+            sa.Column('customer_id', sa.Integer,
+                      sa.ForeignKey('users.id', ondelete='SET NULL'), nullable=True),
+            sa.Column('title',       sa.String(200), nullable=True),
+            sa.Column('created_at',  sa.DateTime, nullable=False),
+            sa.Column('last_msg_at', sa.DateTime, nullable=False),
+        )
+
+    if not _table_exists(conn, 'support_chat_messages'):
+        op.create_table(
+            'support_chat_messages',
+            sa.Column('id',         sa.Integer, primary_key=True, autoincrement=True),
+            sa.Column('session_id', sa.Integer,
+                      sa.ForeignKey('support_chat_sessions.id', ondelete='CASCADE'),
+                      nullable=False),
+            sa.Column('role',       sa.String(20), nullable=False),
+            sa.Column('content',    sa.Text, nullable=False),
+            sa.Column('created_at', sa.DateTime, nullable=False),
+        )
+
+    if not _table_exists(conn, 'support_knowledge'):
+        op.create_table(
+            'support_knowledge',
+            sa.Column('id',         sa.Integer, primary_key=True, autoincrement=True),
+            sa.Column('title',      sa.String(200), nullable=False),
+            sa.Column('body',       sa.Text, nullable=False),
+            sa.Column('active',     sa.Boolean, nullable=False, server_default='1'),
+            sa.Column('created_by', sa.Integer,
+                      sa.ForeignKey('users.id', ondelete='SET NULL'), nullable=True),
+            sa.Column('created_at', sa.DateTime, nullable=False),
+            sa.Column('updated_at', sa.DateTime, nullable=False),
+        )
+
+
+def downgrade():
+    op.drop_table('support_knowledge')
+    op.drop_table('support_chat_messages')
+    op.drop_table('support_chat_sessions')