conversation_entity

type ContentBlock struct {
	Type       string `json:"type"` // "text" | "tool" | "agent" | "approval" | "thinking" | "error"
	Content    string `json:"content"`
	ToolName   string `json:"toolName,omitempty"`
	ToolInput  string `json:"toolInput,omitempty"`
	ToolCallID string `json:"toolCallId,omitempty"` // 跨 turn 还原 tool_calls 历史；老数据无此字段，前端兜底为塌缩消息
	Status     string `json:"status,omitempty"`     // "running" | "completed" | "error" | "canceled"
	// error 块字段：
	//   ErrorKind   — "rate_limit" | "server" | "network" | "auth" | "interrupted" | "unknown"
	//   ErrorDetail — 原始错误正文，UI 直接展示
	ErrorKind   string `json:"errorKind,omitempty"`
	ErrorDetail string `json:"errorDetail,omitempty"`
}

type Conversation struct {
	ID           int64  `gorm:"column:id;primaryKey;autoIncrement"`
	Title        string `gorm:"column:title;type:varchar(255)"`
	ProviderType string `gorm:"column:provider_type;type:varchar(50);not null"`
	Model        string `gorm:"column:model;type:varchar(100)"`
	ProviderID   int64  `gorm:"column:provider_id"`
	SessionData  string `gorm:"column:session_data;type:text"`
	WorkDir      string `gorm:"column:work_dir;type:varchar(500)"`
	Status       int    `gorm:"column:status;default:1"`
	Createtime   int64  `gorm:"column:createtime"`
	Updatetime   int64  `gorm:"column:updatetime"`
}

type Message struct {
	ID             int64  `gorm:"column:id;primaryKey;autoIncrement"`
	ConversationID int64  `gorm:"column:conversation_id;index;not null"`
	Role           string `gorm:"column:role;type:varchar(20);not null"`
	Content        string `gorm:"column:content;type:text"`
	ToolCalls      string `gorm:"column:tool_calls;type:text"`
	ToolCallID     string `gorm:"column:tool_call_id;type:varchar(100)"`
	Blocks         string `gorm:"column:blocks;type:text"`
	TokenUsage     string `gorm:"column:token_usage;type:text"` // JSON: TokenUsage，仅 assistant 消息可能有
	SortOrder      int    `gorm:"column:sort_order;default:0"`
	Createtime     int64  `gorm:"column:createtime"`
}

type SessionInfo struct {
	SessionID string `json:"session_id,omitempty"` // Claude CLI session ID
}

type TokenUsage struct {
	InputTokens         int `json:"inputTokens,omitempty"`
	OutputTokens        int `json:"outputTokens,omitempty"`
	CacheCreationTokens int `json:"cacheCreationTokens,omitempty"`
	CacheReadTokens     int `json:"cacheReadTokens,omitempty"`
}