X-Agents/server/internal/model/chat_session.go

package model

import "time"

// ChatSession 会话
type ChatSession struct {
	ID        string    `json:"id" gorm:"primaryKey;type:varchar(36)"`
	UserID    string    `json:"user_id" gorm:"type:varchar(36);index"`
	AgentID   string    `json:"agent_id" gorm:"type:varchar(36);index"`
	Title     string    `json:"title" gorm:"type:varchar(255)"`
	ModelID   string    `json:"model_id" gorm:"type:varchar(36)"`
	Status    string    `json:"status" gorm:"type:varchar(20);default:'active'"` // active/archived
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

func (ChatSession) TableName() string {
	return "chat_sessions"
}

// ChatMessage 消息
type ChatMessage struct {
	ID         string    `json:"id" gorm:"primaryKey;type:varchar(36)"`
	SessionID  string    `json:"session_id" gorm:"type:varchar(36);index"`
	Role       string    `json:"role" gorm:"type:varchar(20)"` // user/assistant/system
	Content    string    `json:"content" gorm:"type:text"`
	TokensUsed int       `json:"tokens_used" gorm:"default:0"`
	DurationMs int       `json:"duration_ms" gorm:"default:0"`
	Metadata   string    `json:"metadata" gorm:"type:text"` // JSON格式存储额外信息
	CreatedAt  time.Time `json:"created_at"`
}

func (ChatMessage) TableName() string {
	return "chat_messages"
}

// CreateSessionRequest 创建会话请求
type CreateSessionRequest struct {
	UserID  string `json:"user_id"`
	AgentID string `json:"agent_id"`
	Title   string `json:"title"`
	ModelID string `json:"model_id"`
}

// UpdateSessionRequest 更新会话请求
type UpdateSessionRequest struct {
	Title  string `json:"title"`
	Status string `json:"status"`
}

// CreateMessageRequest 创建消息请求
type CreateMessageRequest struct {
	SessionID  string `json:"session_id" binding:"required"`
	Role       string `json:"role" binding:"required"` // user/assistant
	Content    string `json:"content"`
	TokensUsed int    `json:"tokens_used"`
	DurationMs int    `json:"duration_ms"`
	Metadata   string `json:"metadata"`
}

// SessionListResponse 会话列表响应
type SessionListResponse struct {
	List  []ChatSession `json:"list"`
	Total int64         `json:"total"`
}

// MessageListResponse 消息列表响应
type MessageListResponse struct {
	List  []ChatMessage `json:"list"`
	Total int64         `json:"total"`
}