engine

type Call struct {
	ToolName string `json:"toolName,omitempty"`
	Input    string `json:"input,omitempty"`
}

type CallResult struct {
	ID     string `json:"id,omitempty"`
	Result string `json:"result,omitempty"`
}

type Context struct {
	ID      string
	Ctx     context.Context
	Parent  *Context
	Program *types.Program
	Tool    types.Tool
}

type Engine struct {
	Model    Model
	Env      []string
	Progress chan<- types.CompletionStatus
}

type ErrToolNotFound struct {
	ToolName string
}

type Model interface {
	Call(ctx context.Context, messageRequest types.CompletionRequest, status chan<- types.CompletionStatus) (*types.CompletionMessage, error)
}

type Return struct {
	State  *State
	Calls  map[string]Call
	Result *string
}

type State struct {
	Completion types.CompletionRequest             `json:"completion,omitempty"`
	Pending    map[string]types.CompletionToolCall `json:"pending,omitempty"`
	Results    map[string]CallResult               `json:"results,omitempty"`
}