package report

import (
	"encoding/json"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/system"
)

// R-266: a failed root statfs reaches the hub as read_failed, not as a 0-of-0 disk the hub would band
// as "0 % used". A measured disk carries no read_failed at all (omitempty), so an old hub sees no change.
func TestRootStorageEntry_ReadFailed(t *testing.T) {
	failed := rootStorageEntry(system.SystemInfo{DiskKnown: false})
	if !failed.ReadFailed {
		t.Fatal("root statfs failed (DiskKnown false) but the storage entry does not say read_failed")
	}
	if failed.TotalGB != 0 || failed.UsedGB != 0 || failed.Percent != 0 || failed.Mount != "/" {
		t.Errorf("failed entry changed its numbers or mount: %+v", failed)
	}
	b, _ := json.Marshal(failed)
	if !strings.Contains(string(b), `"read_failed":true`) {
		t.Errorf("wire form lacks read_failed: %s", b)
	}

	ok := rootStorageEntry(system.SystemInfo{DiskKnown: true, DiskTotalGB: 100, DiskUsedGB: 40, DiskPercent: 40})
	if ok.ReadFailed {
		t.Error("a measured root disk is marked read_failed")
	}
	b, _ = json.Marshal(ok)
	if strings.Contains(string(b), "read_failed") {
		t.Errorf("a measured disk must not carry read_failed on the wire: %s", b)
	}
	if ok.TotalGB != 100 || ok.Percent != 40 {
		t.Errorf("measured numbers lost: %+v", ok)
	}
}