package address

import "testing"

func TestParseHouseBlock(t *testing.T) {
	tests := []struct {
		name        string
		raw         string
		wantOrdinal string
		wantName    string
		wantType    string
		wantHouse   string
		wantFrac    string
		wantLetter  string
		wantBuild   string
		wantBFrac   string
		wantBLetter string
		wantStruct  string
		wantHas     bool
	}{
		{
			name:        "ordinal, fraction and structure",
			raw:         "2-я Станционная улица 1/1 стр.",
			wantOrdinal: "2", wantName: "станционная", wantType: "улица",
			wantHouse: "1", wantFrac: "1", wantStruct: "", wantHas: true,
		},
		{
			name:     "building with fraction and structure",
			raw:      "Станционная улица 30а к9/1 стр.",
			wantName: "станционная", wantType: "улица",
			wantHouse: "30", wantLetter: "а", wantBuild: "9", wantBFrac: "1", wantHas: true,
		},
		{
			name:        "letter glued to house",
			raw:         "10-й Бронный переулок 33а",
			wantOrdinal: "10", wantName: "бронный", wantType: "переулок",
			wantHouse: "33", wantLetter: "а", wantHas: true,
		},
		{
			name:     "microdistrict, two-word name",
			raw:      "Зеленый бор микрорайон 13",
			wantName: "бор зеленый", wantType: "микрорайон",
			wantHouse: "13", wantHas: true,
		},
		{
			name:        "spelled-out ordinal",
			raw:         "вторая Станционная улица 1",
			wantOrdinal: "2", wantName: "станционная", wantType: "улица",
			wantHouse: "1", wantHas: true,
		},
		{
			name:        "en dash variant",
			raw:         "2–я Станционная улица 1",
			wantOrdinal: "2", wantName: "станционная", wantType: "улица",
			wantHouse: "1", wantHas: true,
		},
		{
			name:     "no house",
			raw:      "Станционная улица",
			wantName: "станционная", wantType: "улица", wantHas: false,
		},
		{
			name:     "structure with number only",
			raw:      "Станционная улица 3 стр.",
			wantName: "станционная", wantType: "улица",
			wantHouse: "3", wantStruct: "", wantHas: true,
		},
		{
			name:     "letter before fraction",
			raw:      "Выборная улица 45а/4",
			wantName: "выборная", wantType: "улица",
			wantHouse: "45", wantLetter: "а", wantFrac: "4", wantHas: true,
		},
		{
			name:        "corpus letter without digit",
			raw:         "1-я Ельцовка улица 1 кД",
			wantOrdinal: "1", wantName: "ельцовка", wantType: "улица",
			wantHouse: "1", wantBLetter: "д", wantHas: true,
		},
		{
			name:     "two type words in a registry name",
			raw:      "Гусинобродский Тракт улица 21",
			wantName: "гусинобродский", wantType: "тракт",
			wantHouse: "21", wantHas: true,
		},
		{
			name:     "name coincides with its type word",
			raw:      "Набережная улица 5",
			wantName: "набережная", wantType: "набережная",
			wantHouse: "5", wantHas: true,
		},
		{
			name:     "abbreviations dom and flat",
			raw:      "ул. Кошурникова, д. 11/1 кв. 5",
			wantName: "кошурникова", wantType: "улица",
			wantHouse: "11", wantFrac: "1", wantHas: true,
		},
		{
			name:     "portal district suffix in parentheses",
			raw:      "Медкадры улица, 1 (Заельцовский район)",
			wantName: "медкадры", wantType: "улица",
			wantHouse: "1", wantHas: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := Parse(tt.raw)
			if got.Ordinal != tt.wantOrdinal {
				t.Errorf("Ordinal = %q, want %q", got.Ordinal, tt.wantOrdinal)
			}
			if got.NameKey != tt.wantName {
				t.Errorf("NameKey = %q, want %q", got.NameKey, tt.wantName)
			}
			if got.StreetType != tt.wantType {
				t.Errorf("StreetType = %q, want %q", got.StreetType, tt.wantType)
			}
			if got.House != tt.wantHouse {
				t.Errorf("House = %q, want %q", got.House, tt.wantHouse)
			}
			if got.HouseFrac != tt.wantFrac {
				t.Errorf("HouseFrac = %q, want %q", got.HouseFrac, tt.wantFrac)
			}
			if got.HouseLetter != tt.wantLetter {
				t.Errorf("HouseLetter = %q, want %q", got.HouseLetter, tt.wantLetter)
			}
			if got.Building != tt.wantBuild {
				t.Errorf("Building = %q, want %q", got.Building, tt.wantBuild)
			}
			if got.BuildingFrac != tt.wantBFrac {
				t.Errorf("BuildingFrac = %q, want %q", got.BuildingFrac, tt.wantBFrac)
			}
			if got.BuildingLetter != tt.wantBLetter {
				t.Errorf("BuildingLetter = %q, want %q", got.BuildingLetter, tt.wantBLetter)
			}
			if got.Structure != tt.wantStruct {
				t.Errorf("Structure = %q, want %q", got.Structure, tt.wantStruct)
			}
			if got.HasHouse != tt.wantHas {
				t.Errorf("HasHouse = %v, want %v", got.HasHouse, tt.wantHas)
			}
		})
	}
}

// TestParseDeterministic guards the core invariant: parsing the same input
// always yields the same structured result and the same street key.
func TestParseDeterministic(t *testing.T) {
	input := "2-я Станционная улица 1/1 стр."
	first := Parse(input)
	for i := 0; i < 100; i++ {
		if got := Parse(input); got.StreetKey != first.StreetKey || got.House != first.House {
			t.Fatalf("non-deterministic parse: %+v vs %+v", got, first)
		}
	}
}

func TestNormalizeIdempotent(t *testing.T) {
	inputs := []string{
		"  2-Я  Станционная\u00a0улица 1/1 стр. ",
		"ЁЛКИ  д. 5, кв. 3",
		"СТАНИЦИОННАЯ — улица, 30а",
		"Медкадры улица, 1 (Заельцовский район)",
		"",
	}
	for _, in := range inputs {
		once := NormalizeText(in)
		twice := NormalizeText(once)
		if once != twice {
			t.Errorf("NormalizeText not idempotent for %q: %q != %q", in, once, twice)
		}
	}
}