package notariusref

import (
	"strings"
	"testing"
)

func TestNormalizeSelectorAcceptsDocumentedForms(t *testing.T) {
	tests := []struct {
		name  string
		value string
		want  string
	}{
		{name: "pipeline", value: "party", want: "party"},
		{name: "chunk", value: "chunk.party", want: "chunk.party"},
		{name: "lane", value: "npc-registry.party", want: "npc-registry.party"},
		{name: "extract", value: "npc-registry.extract.party", want: "npc-registry.extract.party"},
		{name: "merge", value: "npc-registry.merge.party", want: "npc-registry.merge.party"},
		{name: "normalize", value: "npc-registry.normalize.party", want: "npc-registry.normalize.party"},
		{name: "whitespace", value: "  npc-registry . extract . party  ", want: "npc-registry.extract.party"},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			got, err := NormalizeSelector(test.value)
			if err != nil {
				t.Fatalf("NormalizeSelector(%q) error = %v", test.value, err)
			}
			if got != test.want {
				t.Fatalf("NormalizeSelector(%q) = %q, want %q", test.value, got, test.want)
			}
		})
	}
}

func TestNormalizeSelectorRejectsInvalidForms(t *testing.T) {
	tests := []struct {
		name    string
		value   string
		wantErr string
	}{
		{name: "empty", value: "", wantErr: "required"},
		{name: "whitespace", value: "   ", wantErr: "required"},
		{name: "empty first", value: ".party", wantErr: "components"},
		{name: "empty middle", value: "lane..party", wantErr: "components"},
		{name: "empty final", value: "lane.", wantErr: "components"},
		{name: "equals", value: "party=/tmp/party.yml", wantErr: "must not contain"},
		{name: "invalid stage", value: "lane.chunk.party", wantErr: "extract, merge, or normalize"},
		{name: "too many components", value: "lane.extract.party.extra", wantErr: "must use"},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			_, err := NormalizeSelector(test.value)
			if err == nil || !strings.Contains(err.Error(), test.wantErr) {
				t.Fatalf("NormalizeSelector(%q) error = %v, want containing %q", test.value, err, test.wantErr)
			}
		})
	}
}