package llm

import (
	"fmt"
	"net/http"
	"reflect"
	"strings"
	"time"
)

func resolvedHTTPClient(base *http.Client, timeout time.Duration) *http.Client {
	if base == nil {
		if timeout <= 0 {
			return http.DefaultClient
		}
		return &http.Client{Timeout: timeout}
	}

	if timeout <= 0 {
		return base
	}

	cloned := *base
	cloned.Timeout = timeout
	return &cloned
}

func validateOutputTarget(out any) error {
	if out == nil {
		return fmt.Errorf("output target must not be nil")
	}
	value := reflect.ValueOf(out)
	if value.Kind() != reflect.Ptr || value.IsNil() {
		return fmt.Errorf("output target must be a non-nil pointer")
	}
	return nil
}

func sanitizeError(err error, apiKey string) error {
	if err == nil {
		return nil
	}
	msg := err.Error()
	key := strings.TrimSpace(apiKey)
	if key != "" {
		msg = strings.ReplaceAll(msg, key, "[REDACTED]")
		msg = strings.ReplaceAll(msg, "Bearer "+key, "Bearer [REDACTED]")
	}
	return fmt.Errorf("%s", msg)
}