package handlers

import (
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
	"testing"

	"github.com/labstack/echo/v4"

	pscookie "git.ma-al.com/goc_marek/ps_shop/internal/prestashop/cookie"
)

func TestCartActionFromRequestDefaultsToAdd(t *testing.T) {
	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/cart", strings.NewReader(url.Values{
		"id_product": []string{"42"},
	}.Encode()))
	req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationForm)
	rec := httptest.NewRecorder()
	c := e.NewContext(req, rec)

	if got := cartActionFromRequest(c); got != cartActionAdd {
		t.Fatalf("cartActionFromRequest() = %q, want %q", got, cartActionAdd)
	}
}

func TestCartActionFromRequestHonorsDeleteFlag(t *testing.T) {
	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/cart", strings.NewReader(url.Values{
		"delete":     []string{"1"},
		"id_product": []string{"42"},
	}.Encode()))
	req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationForm)
	rec := httptest.NewRecorder()
	c := e.NewContext(req, rec)

	if got := cartActionFromRequest(c); got != cartActionDelete {
		t.Fatalf("cartActionFromRequest() = %q, want %q", got, cartActionDelete)
	}
}

func TestSyncSessionCartIDPreservesChecksumOrder(t *testing.T) {
	session := &pscookie.SessionContext{
		Values: map[string]string{
			"id_lang":   "5",
			"checksum":  "123",
			"id_guest":  "11",
			"id_cart":   "",
			"id_shop":   "1",
			"id_guest2": "ignored",
		},
		OrderedKeys: []string{"id_lang", "id_guest", "checksum"},
		RawCookie:   "raw",
		Plaintext:   "plaintext",
	}

	syncSessionCartID(session, 99)

	if session.CartID == nil || *session.CartID != 99 {
		t.Fatalf("CartID = %v, want 99", session.CartID)
	}
	if got := session.Values["id_cart"]; got != "99" {
		t.Fatalf("Values[id_cart] = %q, want %q", got, "99")
	}
	wantOrder := []string{"id_lang", "id_guest", "id_cart", "checksum"}
	if len(session.OrderedKeys) != len(wantOrder) {
		t.Fatalf("OrderedKeys length = %d, want %d", len(session.OrderedKeys), len(wantOrder))
	}
	for i, want := range wantOrder {
		if got := session.OrderedKeys[i]; got != want {
			t.Fatalf("OrderedKeys[%d] = %q, want %q", i, got, want)
		}
	}
	if session.RawCookie != "" {
		t.Fatalf("RawCookie = %q, want empty", session.RawCookie)
	}
	if session.Plaintext != "" {
		t.Fatalf("Plaintext = %q, want empty", session.Plaintext)
	}
}