package tools

import (
	"context"
	"encoding/json"
	"fmt"

	"ollie/toolsrv"
)

// Think is a scratchpad for externalizing reasoning. The thought is recorded
// in conversation history but not shown to the user. Takes up practically
// zero context space — the value is in writing it.
func Think(ctx context.Context, srv *toolsrv.Server, args json.RawMessage) (string, error) {
	var a struct {
		Thought string `json:"thought"`
	}
	if err := json.Unmarshal(args, &a); err != nil {
		return "", fmt.Errorf("reasoning_think: bad args: %w", err)
	}
	if a.Thought == "" {
		return "", fmt.Errorf("reasoning_think: thought is required")
	}
	return "", nil
}