package arcgis

import (
	"context"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"
)

const envelope = `{
  "features": [
    {"value": "Станционная улица 1/1", "attributes": {
      "address": "Станционная улица 1/1",
      "type_id": 1, "system_id": 5, "time_category": 2,
      "start_date": "2026-10-01T00:00:00", "end_date": "2026-10-31T00:00:00"
    }}
  ],
  "fields": [
    {"name": "type_id", "domain": {"codedValues": [{"code": 1, "name": "Плановое"}]}},
    {"name": "system_id", "domain": {"codedValues": [{"code": 5, "name": "Теплоснабжение"}]}},
    {"name": "time_category", "domain": {"codedValues": [{"code": 2, "name": "Текущие"}]}}
  ]
}`

func TestQueryParsesEnvelope(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if got := r.URL.Query().Get("f"); got != "json" {
			t.Errorf("missing f=json, got %q", got)
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(envelope))
	}))
	defer ts.Close()

	c := New(ts.URL, time.Second, 0)
	rows, err := c.Query(context.Background(), "Станционная улица 1/1")
	if err != nil {
		t.Fatalf("Query: %v", err)
	}
	if len(rows) != 1 {
		t.Fatalf("rows = %d, want 1", len(rows))
	}
	got := rows[0]
	if got.Type != "Плановое" || got.System != "Теплоснабжение" || got.Time != "Текущие" {
		t.Errorf("coded values not resolved: %+v", got)
	}
	if got.Action != "heating" {
		t.Errorf("Action = %q, want heating", got.Action)
	}
}

func TestQueryRetriesThenFails(t *testing.T) {
	var calls int
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		calls++
		http.Error(w, "boom", http.StatusInternalServerError)
	}))
	defer ts.Close()

	c := New(ts.URL, time.Second, 2)
	if _, err := c.Query(context.Background(), "Станционная улица 1/1"); err == nil {
		t.Fatal("expected error")
	}
	if calls != 3 {
		t.Errorf("calls = %d, want 3 (1 + 2 retries)", calls)
	}
}

// TestQueryStripsDistrictSuffix is a regression test: the portal appends the
// district in parentheses, which used to hide the house number from the parser.
func TestQueryStripsDistrictSuffix(t *testing.T) {
	const env = `{"features":[{"value":"Медкадры улица, 1 (Заельцовский район)","attributes":{"address":"Медкадры улица, 1 (Заельцовский район)"}}]}`
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(env))
	}))
	defer ts.Close()

	c := New(ts.URL, time.Second, 0)
	rows, err := c.Query(context.Background(), "Медкадры улица 1")
	if err != nil {
		t.Fatalf("Query: %v", err)
	}
	if len(rows) != 1 {
		t.Fatalf("rows = %d, want 1", len(rows))
	}
	if rows[0].Address != "Медкадры улица, 1" {
		t.Errorf("district suffix not stripped: %q", rows[0].Address)
	}
	if rows[0].Unit.House != "1" {
		t.Errorf("house not parsed at the boundary: %+v", rows[0].Unit)
	}
}

// TestQueryFormatsNumericDates guards against scientific notation in dates,
// which broke the "current outage" filter.
func TestQueryFormatsNumericDates(t *testing.T) {
	const env = `{"features":[{"value":"Ленина улица, 1","attributes":{"address":"Ленина улица, 1","start_date":1790820000000,"end_date":1791799200000}}]}`
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(env))
	}))
	defer ts.Close()

	rows, err := New(ts.URL, time.Second, 0).Query(context.Background(), "Ленина улица 1")
	if err != nil {
		t.Fatalf("Query: %v", err)
	}
	if rows[0].StartDate != "1790820000000" || rows[0].EndDate != "1791799200000" {
		t.Errorf("numeric dates must be integer-formatted: %q..%q", rows[0].StartDate, rows[0].EndDate)
	}
}

// TestLikePattern guards the ordinal/house padding rule: padding an ordinal
// that starts the string breaks the portal match.
func TestLikePattern(t *testing.T) {
	got := likePattern("3-я Механическая улица 24а")
	if strings.Contains(got, " 3-я ") {
		t.Errorf("ordinal must not be space-padded: %q", got)
	}
	if strings.Contains(got, " 24а ") {
		t.Errorf("house with a letter must not be space-padded: %q", got)
	}
	if !strings.Contains(likePattern("Ленина улица 1"), "% 1 %") {
		t.Errorf("pure numeric house must be space-padded: %q", likePattern("Ленина улица 1"))
	}
}