package atlas_test

import (
	"reflect"
	"testing"

	"git.d-ma.be/mathias/cad-atlas/internal/atlas"
)

func TestHostsFromNodes_DerivesSpecFromNodeStatus(t *testing.T) {
	nodes := []byte(`{"items":[
	  {"metadata":{"name":"koala"},
	   "status":{"capacity":{"cpu":"16","memory":"67108864Ki","nvidia.com/gpu":"1"},
	             "nodeInfo":{"architecture":"amd64","kubeletVersion":"v1.31.4+k3s1"}}},
	  {"metadata":{"name":"worker2"},
	   "status":{"capacity":{"cpu":"8","memory":"33554432Ki"},
	             "nodeInfo":{"architecture":"arm64","kubeletVersion":"v1.30.0+k3s1"}}}
	]}`)

	hosts, err := atlas.HostsFromNodes(nodes)
	if err != nil {
		t.Fatalf("HostsFromNodes: %v", err)
	}

	want := []atlas.Host{
		{Name: "koala", Spec: "amd64 · 16 cpu · 64Gi · 1× GPU · k3s v1.31.4"},
		{Name: "worker2", Spec: "arm64 · 8 cpu · 32Gi · k3s v1.30.0"},
	}
	if !reflect.DeepEqual(hosts, want) {
		t.Fatalf("hosts = %+v\nwant   %+v", hosts, want)
	}
}

func TestHostsFromNodes_ErrorsOnBadJSON(t *testing.T) {
	if _, err := atlas.HostsFromNodes([]byte("{not json")); err == nil {
		t.Fatal("expected error on bad JSON, got nil")
	}
}