package agent

import (
	"ollie/pkg/backend"
	"ollie/pkg/tools"
)

func (r *Runtime) toolResultMaxBytes() int {
	if r.ToolResultMaxBytes > 0 {
		return r.ToolResultMaxBytes
	}
	return defaultToolResultMaxBytes
}

// Runtime holds the swappable per-agent configuration. It contains everything
// that changes on an /agent switch but is stable across turns within the same
// agent. The agent struct stores a pointer to the active Runtime; switching
// agents replaces it atomically.
type Runtime struct {
	Backend      backend.Backend
	Dispatcher   tools.Dispatcher
	Hooks        Hooks
	Preamble     string // compiled system prompt
	Tools        []backend.Tool
	Exec         toolExecutor
	ClassifyTool toolClassifier
	ClassifyTier func(string) ResultTier
	GenParams    backend.GenerationParams
	MaxSteps           int
	ToolResultMaxBytes int // 0 means use defaultToolResultMaxBytes
	// CfgBackend and CfgModel are the backend/model overrides from the agent
	// config JSON. Empty means no override. Applied by the caller after
	// BuildRuntime returns.
	CfgBackend string
	CfgModel   string
	// Messages holds non-fatal warnings from runtime construction
	// (e.g. tool listing errors). Surfaced once at session start.
	Messages []string
}