update revision alembic

backend/fastapi/alembic/versions/0002_change_erole_bot_to_model.py

@@ -0,0 +1,74 @@
+"""change erole 'bot' -> 'model'
+
+Revision ID: 0002_change_erole_bot_to_model
+Revises: 0001_create_initial_tables
+Create Date: 2025-11-05 00:00:00.000000
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = '0002_change_erole_bot_to_model'
+down_revision = '0001_create_initial_tables'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    dialect = bind.dialect.name
+
+    # First, update existing data from 'bot' to 'model'
+    try:
+        op.execute("""UPDATE messages SET role='model' WHERE role='bot'""")
+    except Exception:
+        # best-effort: continue if table doesn't exist or update fails
+        pass
+
+    # Then alter the column enum definition depending on dialect
+    if dialect in ("mysql", "mysql+pymysql", "mysql+aiomysql"):
+        # MySQL: modify column to new ENUM
+        try:
+            op.execute("""
+            ALTER TABLE messages
+            MODIFY COLUMN role ENUM('user','model') NOT NULL
+            """)
+        except Exception:
+            pass
+    else:
+        # For other DBs, attempt a generic ALTER using SQLAlchemy Enum
+        try:
+            op.alter_column('messages', 'role',
+                            existing_type=sa.Enum('user', 'bot', name='erole'),
+                            type_=sa.Enum('user', 'model', name='erole'),
+                            existing_nullable=False)
+        except Exception:
+            pass
+
+
+def downgrade() -> None:
+    bind = op.get_bind()
+    dialect = bind.dialect.name
+
+    # revert values from 'model' back to 'bot'
+    try:
+        op.execute("""UPDATE messages SET role='bot' WHERE role='model'""")
+    except Exception:
+        pass
+
+    if dialect in ("mysql", "mysql+pymysql", "mysql+aiomysql"):
+        try:
+            op.execute("""
+            ALTER TABLE messages
+            MODIFY COLUMN role ENUM('user','bot') NOT NULL
+            """)
+        except Exception:
+            pass
+    else:
+        try:
+            op.alter_column('messages', 'role',
+                            existing_type=sa.Enum('user', 'model', name='erole'),
+                            type_=sa.Enum('user', 'bot', name='erole'),
+                            existing_nullable=False)
+        except Exception:
+            pass

backend/fastapi/src/application/usecases/gemini_usecase.py

@@ -51,7 +51,7 @@ async def _persist_assistant_message(self, conversation_id: Optional[str], text:
         msg = MessageDomain(
             id=generate_unique_id("msg"),
             conversation_id=conversation_id,
-            role="bot",
+            role="model",
             content=text,
             created_at=get_current_timestamp(),
         )

backend/fastapi/src/domain/enums/enums.py

@@ -38,7 +38,7 @@ def from_str(cls, value: Any) -> "ESortOrder":
 
 class ERole(str, Enum):
     USER = "user"
-    BOT = "bot"
+    MODEL = "model"
 
     @classmethod
     def from_str(cls, value: Any) -> "ERole":

db/database.sql

@@ -18,7 +18,7 @@ CREATE TABLE IF NOT EXISTS conversations (
 CREATE TABLE IF NOT EXISTS messages (
     id CHAR(255) NOT NULL PRIMARY KEY,
     conversation_id CHAR(255) NOT NULL,
-    role ENUM('user','bot') NOT NULL,
+  role ENUM('user','model') NOT NULL,
     content LONGTEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL, -- Nội dung lớn, hỗ trợ emoji, HTML, markdown
     created_at INT DEFAULT CURRENT_TIMESTAMP,
     INDEX idx_conversation_id (conversation_id),