models

type Base struct {
	ID        uuid.UUID
	CreatedAt time.Time
	UpdatedAt time.Time
	DeletedAt gorm.DeletedAt
}

type Chat struct {
	Base

	UserID  uuid.UUID
	Title   string
	ModelID string

	Temperature      *float64
	TopP             *float64
	ReasoningEffort  string
	MaxOutputTokens  *int
	MaxHistoryTokens *int

	// DisabledMCPServerIDs is the per-chat set of MCP server IDs whose tools
	// are withheld from this chat's turns. Empty (the default) means every
	// globally-enabled server is available. Explicit column tag: gorm's
	// default namer would mangle the MCP/IDs acronyms. See core/chats filter.
	//nolint:lll // struct tag + generic type won't fit 80 cols; not splittable
	DisabledMCPServerIDs datatypes.JSONSlice[uuid.UUID] `gorm:"column:disabled_mcp_server_ids"`
}

type LLMUsage struct {
	Base

	Service            string
	Stage              string
	Model              string
	ReasoningEffort    string
	PromptTokens       int64
	CachedPromptTokens int64
	CompletionTokens   int64
	ReasoningTokens    int64
	TotalTokens        int64
	DurationMs         int64
	UserID             *uuid.UUID
	ChatID             *uuid.UUID
	MessageID          *uuid.UUID
	RequestID          string
	ErrorMessage       string
}

type MCPServer struct {
	Base

	Name       string
	Transport  MCPTransport
	Command    string
	Args       datatypes.JSON
	URL        string
	HeadersEnc []byte
	EnvEnc     []byte
	Enabled    bool
	CreatedBy  *uuid.UUID
}

type MCPSource = string

type MCPToolExecution struct {
	Base

	MessageID  uuid.UUID
	Server     string
	Tool       string
	Params     datatypes.JSON
	Result     string
	IsError    bool
	DurationMs int64
}

type MCPTransport = string

type Message struct {
	Base

	Position          int64     `gorm:"default:(-)"`
	TurnID            uuid.UUID `gorm:"default:(-)"`
	TurnComplete      *bool     `gorm:"default:(-)"`
	ModelID           string
	ChatID            uuid.UUID
	Role              MessageRole
	Content           string
	Reasoning         string
	ProviderReasoning datatypes.JSON
	ToolCalls         datatypes.JSON
	ToolCallID        string
	IsError           bool

	// IsInjection marks a row a tool injected into the model's context rather
	// than something the user or the model said. Injections are per-run
	// scaffolding, so only one is ever stored: the trailing one a run ended on,
	// kept so an interrupted turn is not silently missing the instruction that
	// was pending when it stopped. The flag is what keeps it OUT of a rebuilt
	// history — a row that exists as a record, not as conversation.
	IsInjection bool

	UISpec       datatypes.JSON
	InputTokens  int64
	OutputTokens int64
}

type MessageRole = string

type Session struct {
	Base

	UserID    uuid.UUID
	TokenHash string
	ExpiresAt time.Time
}

type User struct {
	Base

	Username     string
	PasswordHash *string
	IsAdmin      bool
}