memory

type CompactionImpact struct {
	OriginalTokens              int `json:"original_tokens"`
	MicroCompactTokens          int `json:"micro_compact_tokens"`
	EstimatedFullCompactTokens  int `json:"estimated_full_compact_tokens"`
	MicroCompactSavings         int `json:"micro_compact_savings"`
	EstimatedFullCompactSavings int `json:"estimated_full_compact_savings"`
}

type CompactionResult struct {
	Messages            []types.Message           `json:"messages"`
	DidCompact          bool                      `json:"did_compact"`
	UsedMicroCompact    bool                      `json:"used_micro_compact"`
	UsedSummaryCompact  bool                      `json:"used_summary_compact"`
	PreCompactTokens    int                       `json:"pre_compact_tokens"`
	PostCompactTokens   int                       `json:"post_compact_tokens"`
	TargetTokens        int                       `json:"target_tokens"`
	Summary             string                    `json:"summary,omitempty"`
	ConsecutiveFailures int                       `json:"consecutive_failures"`
	RuntimeMetadata     *types.CompactionMetadata `json:"runtime_metadata,omitempty"`
}

type CompactionStrategy interface {
	// AutoCompact compacts messages if the token budget is exceeded.
	// It respects the circuit breaker via TrackingState.ConsecutiveFailures.
	// When no compaction is needed it returns the original messages unchanged
	// with DidCompact == false.
	AutoCompact(
		ctx context.Context,
		systemPrompt string,
		messages []types.Message,
		model types.ModelIdentifier,
		sessionID types.SessionID,
		turnID types.TurnID,
		tracking *TrackingState,
	) (CompactionResult, error)
}

type Config struct {
	AutoCompactThreshold      float64               `json:"auto_compact_threshold"`
	CompactTargetPercentage   float64               `json:"compact_target_percentage"`
	MaxSummaryTokens          int                   `json:"max_summary_tokens"`
	AutoCompactBufferTokens   int                   `json:"auto_compact_buffer_tokens"`
	ManualCompactBufferTokens int                   `json:"manual_compact_buffer_tokens"`
	MaxConsecutiveFailures    int                   `json:"max_consecutive_failures"`
	SummaryModel              types.ModelIdentifier `json:"summary_model"`
}

type Engine struct {
	// contains filtered or unexported fields
}

type MessagePreparer struct {
	// contains filtered or unexported fields
}

type MicroCompactor struct {
	// contains filtered or unexported fields
}

type TrackingState struct {
	ConsecutiveFailures int `json:"consecutive_failures"`
}

type TrimStrategy string

type TrimmedContent struct {
	// Content is the trimmed content
	Content string `json:"content"`

	// OriginalSize is the original size
	OriginalSize int `json:"original_size"`

	// TrimmedSize is the trimmed size
	TrimmedSize int `json:"trimmed_size"`

	// Strategy is the trim strategy used
	Strategy TrimStrategy `json:"strategy"`

	// Preview is a preview of the original content
	Preview string `json:"preview,omitempty"`
}