package serial

import (
	"fmt"
	"path/filepath"
	"testing"
)

func TestDeployedFET3568JCMappingMatchesCanonicalPortOrder(t *testing.T) {
	mappingPath := filepath.Join("..", "..", "deploy", "etc", "tera", "serial-map.json")
	controller, err := LoadMappingController(mappingPath, "fet3568j-c")
	if err != nil {
		t.Fatalf("load deployed mapping: %v", err)
	}
	if controller.mapping.MappingVersion != "fet3568j-c-20260721-v1" {
		t.Fatalf("mapping version = %q", controller.mapping.MappingVersion)
	}

	for index, item := range controller.ordered {
		channelNumber := index + 1
		ttyNumber := channelNumber + 3
		expectedBDF := "0000:01:00.0"
		if channelNumber > 24 {
			ttyNumber = channelNumber + 7
			expectedBDF = "0002:21:00.0"
		}
		expectedChannel := fmt.Sprintf("CH%02d", channelNumber)
		expectedDevice := fmt.Sprintf("/dev/ttyWCH%d", ttyNumber)
		if item.Channel != expectedChannel || item.Device != expectedDevice || item.PCIBDF != expectedBDF {
			t.Fatalf("mapping[%d] = %#v, want %s %s %s", index, item, expectedChannel, expectedDevice, expectedBDF)
		}
	}
}