package suite

import (
	"errors"
	"testing"
)

// S3 is the ingest call: (id, revision), no person, team-visible only.
func TestS3ReturnsBody(t *testing.T) {
	got, err := DecodeS3(200, []byte("the body"))
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if string(got) != "the body" {
		t.Errorf("got %q, want %q", got, "the body")
	}
}

// 404 is the whole vocabulary of refusal. Deleted, never team-visible, or
// departed from team-visibility all answer the same way, so a consumer cannot
// learn from a refusal that the item exists (§4.2).
func TestS3NotFoundIsIndistinguishable(t *testing.T) {
	_, err := DecodeS3(404, nil)

	if !errors.Is(err, ErrNotAvailable) {
		t.Errorf("got %v, want ErrNotAvailable", err)
	}
}

// A 403 breaks the contract, and the client says so rather than folding it in
// with 404. "404, never 403" is the rule (§4.2, §6) because 403 means "this
// exists and you may not have it" — which is precisely the fact custody hides.
// A sibling answering 403 has a bug that leaks, and quietly treating it as a
// refusal would keep that bug invisible.
func TestS3ForbiddenIsAContractBreach(t *testing.T) {
	_, err := DecodeS3(403, nil)

	// Positively, not just "some error": mutating this branch to a plain
	// fmt.Errorf passed the suite, which lost exactly the breach-versus-outage
	// distinction the sentinel exists to carry.
	if !errors.Is(err, ErrContractBreach) {
		t.Errorf("got %v, want ErrContractBreach", err)
	}
	if errors.Is(err, ErrNotAvailable) {
		t.Error("403 was folded into ErrNotAvailable; it must be distinguishable")
	}
}

// Any other non-2xx is a failed call, not a refusal.
func TestS3ServerErrorIsNotARefusal(t *testing.T) {
	_, err := DecodeS3(503, nil)

	if err == nil {
		t.Fatal("got nil error for a 503, want a failure")
	}
	if errors.Is(err, ErrNotAvailable) {
		t.Error("503 was reported as a refusal; an outage is not an answer")
	}
	if errors.Is(err, ErrContractBreach) {
		t.Error("503 was reported as a contract breach; a sibling being down is not a sibling misbehaving")
	}
}