// Package portcheck provides TCP port connectivity checking.
package portcheck

import (
	"context"
	"errors"
	"log/slog"

	"go.uber.org/fx"

	"sneak.berlin/go/dnswatcher/internal/logger"
)

// ErrNotImplemented indicates the port checker is not yet implemented.
var ErrNotImplemented = errors.New(
	"port checker not yet implemented",
)

// Params contains dependencies for Checker.
type Params struct {
	fx.In

	Logger *logger.Logger
}

// Checker performs TCP port connectivity checks.
type Checker struct {
	log *slog.Logger
}

// New creates a new port Checker instance.
func New(
	_ fx.Lifecycle,
	params Params,
) (*Checker, error) {
	return &Checker{
		log: params.Logger.Get(),
	}, nil
}

// CheckPort tests TCP connectivity to the given address and port.
func (c *Checker) CheckPort(
	_ context.Context,
	_ string,
	_ int,
) (bool, error) {
	return false, ErrNotImplemented
}