package session

import (
	"context"
	"crypto/md5"
	"fmt"
	"net/http/httptest"
	"testing"
)

func TestPrestashopCookieDomain(t *testing.T) {
	if got := prestashopCookieDomain("localhost", nil); got != "" {
		t.Fatalf("prestashopCookieDomain(localhost) = %q, want empty", got)
	}

	if got := prestashopCookieDomain("shop.example.com", []string{"shop.example.com"}); got != ".example.com" {
		t.Fatalf("prestashopCookieDomain(shared) = %q, want %q", got, ".example.com")
	}

	if got := prestashopCookieDomain("shop.example.com", nil); got != "shop.example.com" {
		t.Fatalf("prestashopCookieDomain(single) = %q, want %q", got, "shop.example.com")
	}
}

func TestURIMatchesRequest(t *testing.T) {
	if !uriMatchesRequest("/shop/fr/", "/shop/fr/product/test") {
		t.Fatalf("expected nested shop URI to match request path")
	}

	if uriMatchesRequest("/shop/fr/", "/shop/en/product/test") {
		t.Fatalf("unexpected match for different shop URI")
	}
}

func TestCookieDomainSourcePrefersDatabaseDomain(t *testing.T) {
	shop := &cookieShopContext{
		Domain:    "shop.example.com",
		DomainSSL: "secure.example.com",
	}

	if got := cookieDomainSource(shop, "proxy.internal"); got != "secure.example.com" {
		t.Fatalf("cookieDomainSource() = %q, want %q", got, "secure.example.com")
	}
}

func TestCookieDomainSourceKeepsMatchingDatabaseHost(t *testing.T) {
	shop := &cookieShopContext{
		Domain:    "shop.example.com",
		DomainSSL: "secure.example.com",
	}

	if got := cookieDomainSource(shop, "shop.example.com"); got != "shop.example.com" {
		t.Fatalf("cookieDomainSource() = %q, want %q", got, "shop.example.com")
	}
}

func TestOverrideCookieHashDomain(t *testing.T) {
	if got := overrideCookieHashDomain(".Example.com"); got != "example.com" {
		t.Fatalf("overrideCookieHashDomain() = %q, want %q", got, "example.com")
	}
}

func TestResolveCookieNameReturnsExplicitOverride(t *testing.T) {
	service := NewService(nil, "ps_", "1.7.3", "PrestaShop-fixed", "")

	got, err := service.ResolveCookieName(context.Background(), httptest.NewRequest("GET", "https://shop.example.com/", nil))
	if err != nil {
		t.Fatalf("ResolveCookieName() error = %v", err)
	}
	if got != "PrestaShop-fixed" {
		t.Fatalf("ResolveCookieName() = %q, want %q", got, "PrestaShop-fixed")
	}
}

func TestDomainCookieOverrideParticipatesInHash(t *testing.T) {
	sum := md5.Sum([]byte("1.7.3" + "ps-s1" + overrideCookieHashDomain(".example.com")))
	got := fmt.Sprintf("PrestaShop-%x", sum)
	want := "PrestaShop-1e5aa4f42a55532134a4e84017cdf643"
	if got != want {
		t.Fatalf("derived cookie name = %q, want %q", got, want)
	}
}

func TestNormalizeCookiePath(t *testing.T) {
	if got := normalizeCookiePath(""); got != "/" {
		t.Fatalf("normalizeCookiePath(\"\") = %q, want %q", got, "/")
	}
	if got := normalizeCookiePath("shop"); got != "/shop/" {
		t.Fatalf("normalizeCookiePath(\"shop\") = %q, want %q", got, "/shop/")
	}
}