新增消息的储存和查看接口

mini-program/app/schemas/__init__.py

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+

mini-program/app/schemas/message.py

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+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel, Field, model_validator
+
+
+class MessageCreateRequest(BaseModel):
+    sender_user_id: int = Field(gt=0)
+    peer_user_id: int = Field(gt=0)
+    client_msg_id: str = Field(min_length=1, max_length=64)
+    content_type: int = Field(description="1-text 2-audio 3-image 4-json")
+    content_text: str | None = Field(default=None)
+    content_json: dict[str, Any] | None = None
+    media_file_key: str | None = Field(default=None, max_length=255)
+    media_duration_ms: int | None = Field(default=None, ge=0)
+
+    @model_validator(mode="after")
+    def validate_message_fields(self) -> "MessageCreateRequest":
+        if self.sender_user_id == self.peer_user_id:
+            raise ValueError("sender_user_id and peer_user_id cannot be the same")
+
+        if self.content_type not in {1, 2, 3, 4}:
+            raise ValueError("content_type must be one of 1, 2, 3, 4")
+
+        if self.content_type == 1 and not (self.content_text and self.content_text.strip()):
+            raise ValueError("content_text is required when content_type is 1")
+
+        if self.content_type in {2, 3} and not self.media_file_key:
+            raise ValueError("media_file_key is required when content_type is 2 or 3")
+
+        if self.content_type == 4 and self.content_json is None:
+            raise ValueError("content_json is required when content_type is 4")
+
+        return self
+
+
+class MessageItem(BaseModel):
+    id: int
+    conversation_id: int
+    seq: int
+    sender_user_id: int | None
+    role: int
+    content_type: int
+    content_text: str | None
+    content_json: dict[str, Any] | None
+    media_file_key: str | None
+    media_duration_ms: int | None
+    client_msg_id: str | None
+    created_at: datetime
+
+
+class MessageCreateResponse(BaseModel):
+    idempotent: bool
+    message: MessageItem
+
+
+class MessageListResponse(BaseModel):
+    conversation_id: int
+    has_more: bool
+    next_cursor_seq: int | None
+    items: list[MessageItem]