package resolution

import (
	"reflect"
	"strings"
	"testing"

	mcat "git.novox.be/novox/mesh-sdk/go/catalogue"
)

// notifierConsumer is the notifier requiring a mesh-scoped database, marked moved when moved, with its credential
// kept under two local names (ADR 0094) when locals is set.
func notifierConsumer(t *testing.T, moved, locals bool) mcat.Manifest {
	t.Helper()
	raw := handedNotifier
	if moved {
		raw = notifierMoved()
	}
	add := `"requires":["postgres-database"],`
	if locals {
		add += `"secrets":{"postgres-database":{"hot":"/var/lib/notify/hot","cold":"/var/lib/notify/cold"}},`
	}
	raw = strings.Replace(raw, `"build":`, add+`"build":`, 1)
	return held(t, raw, builtNotifier())
}

// twoStores is a mesh where two machines each run a store providing the database, the consumer pinned to one.
func twoStores(pin string) mcat.World {
	return mcat.World{Offered: map[string][]mcat.Provider{"postgres-database": {
		{Node: "anchor", At: "anchor.internal", Module: "store", Serves: map[string]any{"port": 5432}},
		{Node: "home", At: "home.internal", Module: "store-two", Serves: map[string]any{"port": 5434}},
	}}, Pinned: map[string]mcat.Chosen{"postgres-database": {Node: pin}}}
}

func consumerOn(t *testing.T, m mcat.Manifest, w mcat.World) mcat.Resolution {
	t.Helper()
	node := workstation()
	node.At = "workstation.internal"
	stores := shelf(m, mcat.Manifest{Module: "store", Version: "1", Provides: []mcat.Offer{{Name: "postgres-database", Scope: mcat.ScopeMesh,
		Credential: &mcat.OfferCredential{Form: mcat.CredentialFormPair}}},
		Serves: map[string]map[string]any{"postgres-database": {"port": 5432}}}, mcat.Manifest{Module: "store-two", Version: "1", Provides: []mcat.Offer{{Name: "postgres-database", Scope: mcat.ScopeMesh, Credential: &mcat.OfferCredential{Form: mcat.CredentialFormPair}}},
		Serves: map[string]map[string]any{"postgres-database": {"port": 5434}}})
	r, err := Resolve(stores, []string{m.Module}, node, w)
	if err != nil {
		t.Fatal(err)
	}
	r.Account = "op"
	return r
}

// A consumer's plan entry carries the names the mesh composed for it through that provision (issue 792): what its
// binding file names as `${bound:<provision>:name|internal-name|name-<local>|internal-name-<local>}`, so a moved
// provider's helper copies them into the consumer's entry and the client fills the same text. A consumer
// contributing no label has the entry it had.
func TestAHandedModulesPlanEntryCarriesTheNamesComposedForIt(t *testing.T) {
	m := notifierConsumer(t, true, false)
	m.ContributesMany = map[string]map[string]map[string]any{
		"postgres-database": {"web": {"label": "git"}, "api": {"label": "git-api"}}}
	r := consumerOn(t, m, twoStores("anchor"))
	r.PublicDomain = "example.org"
	c, _ := composeWith(t, r, handingTo("store:5000"))
	got := c.Plans["notify"].Provisions
	if len(got) != 1 {
		t.Fatalf("the plan names %+v", got)
	}
	want := map[string]string{"name-web": "git.example.org", "name-api": "git-api.example.org"}
	own, err := resolutionOwnNames(r, m, "postgres-database", nil)
	if err != nil {
		t.Fatal(err)
	}
	file := map[string]string{}
	withOwnNames(file, own)
	for k, v := range file {
		if strings.HasPrefix(k, "internal-") {
			want[k] = v
		}
	}
	if !reflect.DeepEqual(got[0].Names, want) {
		t.Fatalf("the entry carries %v, the binding file names %v", got[0].Names, want)
	}
}

// A plan entry names the tool of an offer whose credential the provider's software issues (issue 928), so the vault
// asks that tool for each holder; an offer of any other form names none.
func TestAHandedModulesPlanNamesTheCredentialToolOfASoftwareIssuedOffer(t *testing.T) {
	for credential, want := range map[string]string{
		``:                                      "",
		`,"credential":{"own":"admin"}`:         "",
		`,"credential":{"issued-by":"outside"}`: "",
		`,"credential":{"issued-by":"software","tool":"gitea_agent_token"}`: "gitea_agent_token",
	} {
		raw := `{"module":"store","version":"1","provides":[{"name":"postgres-database","scope":"mesh"` +
			credential + `}],"serves":{"postgres-database":{"port":5432}}`
		if strings.Contains(credential, `"own"`) {
			raw += `,"own-secrets":{"admin":{"path":"/var/lib/store/admin","taken":"at-start"}}`
		}
		node := workstation()
		node.At = "workstation.internal"
		consumer := notifierConsumer(t, true, false)
		r, err := Resolve(shelf(consumer, mustParse(t, raw+`}`)), []string{consumer.Module}, node, twoStores("anchor"))
		if err != nil {
			t.Fatal(err)
		}
		r.Account = "op"
		c, _ := composeWith(t, r, handingTo("store:5000"))
		got := c.Plans["notify"].Provisions
		if len(got) != 1 || got[0].CredentialTool != want {
			t.Errorf("an offer with %q: the plan names %+v, want the tool %q", credential, got, want)
		}
	}
}