almost all ready

2026-05-14 01:48:15 +02:00
parent 1b53c1c199
commit 2e1bec0e8b
29 changed files with 5442 additions and 642 deletions
@@ -0,0 +1,285 @@
+package handlers
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/labstack/echo/v4"
+
+	appmiddleware "git.ma-al.com/goc_marek/ps_shop/internal/http/middleware"
+	pscart "git.ma-al.com/goc_marek/ps_shop/internal/prestashop/cart"
+	pscookie "git.ma-al.com/goc_marek/ps_shop/internal/prestashop/cookie"
+)
+
+type cartSessionService interface {
+	RefreshExpiry(ctx context.Context, session *pscookie.SessionContext) error
+	ResolveCookiePath(ctx context.Context, req *http.Request) (string, error)
+}
+
+type CartHandler struct {
+	carts    *pscart.Service
+	codec    pscookie.Codec
+	sessions cartSessionService
+}
+
+func NewCartHandler(carts *pscart.Service, codec pscookie.Codec, sessions cartSessionService) *CartHandler {
+	return &CartHandler{
+		carts:    carts,
+		codec:    codec,
+		sessions: sessions,
+	}
+}
+
+func (h *CartHandler) Handle(c echo.Context) error {
+	if h == nil || h.carts == nil || h.codec == nil || h.sessions == nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "cart handler is not initialized")
+	}
+
+	session := appmiddleware.GetSession(c)
+	action := cartActionFromRequest(c)
+
+	input, err := cartMutationInput(c, session)
+	if err != nil {
+		return echo.NewHTTPError(http.StatusBadRequest, err.Error())
+	}
+
+	var result *pscart.MutationResult
+	switch action {
+	case cartActionDelete:
+		result, err = h.carts.DeleteProduct(c.Request().Context(), input)
+	case cartActionUpdate:
+		result, err = h.carts.UpdateProduct(c.Request().Context(), input)
+	default:
+		result, err = h.carts.AddProduct(c.Request().Context(), input)
+	}
+	if err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "cart mutation failed: "+err.Error())
+	}
+
+	syncSessionCartID(session, result.CartID)
+	if err := h.writeSessionCookie(c, session); err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "cart cookie update failed: "+err.Error())
+	}
+
+	if wantsJSON(c.Request()) {
+		return c.JSON(http.StatusOK, result)
+	}
+
+	return c.Redirect(http.StatusSeeOther, cartRedirectTarget(c.Request()))
+}
+
+type cartAction string
+
+const (
+	cartActionAdd    cartAction = "add"
+	cartActionUpdate cartAction = "update"
+	cartActionDelete cartAction = "delete"
+)
+
+func cartActionFromRequest(c echo.Context) cartAction {
+	switch c.Request().Method {
+	case http.MethodDelete:
+		return cartActionDelete
+	case http.MethodPut, http.MethodPatch:
+		return cartActionUpdate
+	}
+
+	action := strings.ToLower(strings.TrimSpace(c.FormValue("action")))
+	switch action {
+	case string(cartActionDelete):
+		return cartActionDelete
+	case string(cartActionUpdate):
+		return cartActionUpdate
+	}
+
+	switch {
+	case c.FormValue("delete") != "":
+		return cartActionDelete
+	case c.FormValue("update") != "":
+		return cartActionUpdate
+	default:
+		return cartActionAdd
+	}
+}
+
+func cartMutationInput(c echo.Context, session *pscookie.SessionContext) (pscart.MutationInput, error) {
+	productID, err := formInt64(c, "id_product")
+	if err != nil || productID == 0 {
+		return pscart.MutationInput{}, fmt.Errorf("valid id_product is required")
+	}
+
+	quantity := int64(1)
+	if raw := strings.TrimSpace(c.FormValue("qty")); raw != "" {
+		quantity, err = strconv.ParseInt(raw, 10, 64)
+		if err != nil || quantity < 0 {
+			return pscart.MutationInput{}, fmt.Errorf("valid qty is required")
+		}
+	}
+
+	productAttributeID, err := firstFormInt64(c, "id_product_attribute", "ipa")
+	if err != nil {
+		return pscart.MutationInput{}, fmt.Errorf("valid id_product_attribute is required")
+	}
+	customizationID, err := firstFormInt64(c, "id_customization", "customization_id")
+	if err != nil {
+		return pscart.MutationInput{}, fmt.Errorf("valid id_customization is required")
+	}
+
+	return pscart.MutationInput{
+		CartID:             int64Value(session.CartID),
+		ProductID:          productID,
+		ProductAttributeID: productAttributeID,
+		CustomizationID:    customizationID,
+		Quantity:           quantity,
+		CustomerID:         int64Value(session.CustomerID),
+		GuestID:            int64Value(session.GuestID),
+		LanguageID:         int64Value(session.LanguageID),
+		CurrencyID:         int64Value(session.CurrencyID),
+		ShopID:             int64Value(session.ShopID),
+	}, nil
+}
+
+func formInt64(c echo.Context, key string) (int64, error) {
+	raw := strings.TrimSpace(c.FormValue(key))
+	if raw == "" {
+		return 0, nil
+	}
+	return strconv.ParseInt(raw, 10, 64)
+}
+
+func firstFormInt64(c echo.Context, keys ...string) (int64, error) {
+	for _, key := range keys {
+		value, err := formInt64(c, key)
+		if err != nil {
+			return 0, err
+		}
+		if value != 0 {
+			return value, nil
+		}
+	}
+	return 0, nil
+}
+
+func syncSessionCartID(session *pscookie.SessionContext, cartID int64) {
+	if session == nil || cartID == 0 {
+		return
+	}
+	if session.Values == nil {
+		session.Values = map[string]string{}
+	}
+
+	session.CartID = int64Ptr(cartID)
+	session.Values["id_cart"] = strconv.FormatInt(cartID, 10)
+	session.OrderedKeys = appendOrderedKeyIfMissing(session.OrderedKeys, "id_cart")
+	session.OrderedKeys = moveOrderedKeyToEnd(session.OrderedKeys, "checksum")
+	session.Plaintext = ""
+	session.RawCookie = ""
+}
+
+func appendOrderedKeyIfMissing(keys []string, key string) []string {
+	for _, existing := range keys {
+		if existing == key {
+			return keys
+		}
+	}
+	return append(keys, key)
+}
+
+func moveOrderedKeyToEnd(keys []string, key string) []string {
+	for i, existing := range keys {
+		if existing == key {
+			keys = append(keys[:i], keys[i+1:]...)
+			return append(keys, key)
+		}
+	}
+	return keys
+}
+
+func int64Ptr(value int64) *int64 {
+	if value == 0 {
+		return nil
+	}
+	v := value
+	return &v
+}
+
+func int64Value(value *int64) int64 {
+	if value == nil {
+		return 0
+	}
+	return *value
+}
+
+func (h *CartHandler) writeSessionCookie(c echo.Context, session *pscookie.SessionContext) error {
+	if err := h.sessions.RefreshExpiry(c.Request().Context(), session); err != nil {
+		return err
+	}
+
+	cookiePath, err := h.sessions.ResolveCookiePath(c.Request().Context(), c.Request())
+	if err != nil {
+		return err
+	}
+
+	encoded, err := h.codec.Encode(session)
+	if err != nil {
+		return err
+	}
+	session.RawCookie = encoded
+	writeSessionCookie(c.Request(), c.Response(), session, session.CookieName, encoded, cookiePath)
+	return nil
+}
+
+func writeSessionCookie(req *http.Request, res *echo.Response, session *pscookie.SessionContext, name, value, path string) {
+	maxAge := 1
+	if session != nil && session.ExpiresAt != nil {
+		maxAge = int(session.ExpiresAt.UTC().Unix())
+	}
+	if strings.TrimSpace(path) == "" {
+		path = "/"
+	}
+
+	header := fmt.Sprintf("%s=%s; path=%s; max-age=%d; HttpOnly; SameSite=Lax", name, value, path, maxAge)
+	if requestCookieSecure(req) {
+		header += "; Secure"
+	}
+	res.Header().Add(echo.HeaderSetCookie, header)
+}
+
+func requestCookieSecure(req *http.Request) bool {
+	if req == nil {
+		return false
+	}
+	if req.TLS != nil {
+		return true
+	}
+	forwarded := req.Header.Get("X-Forwarded-Proto")
+	if strings.Contains(forwarded, ",") {
+		forwarded = strings.TrimSpace(strings.Split(forwarded, ",")[0])
+	}
+	return strings.EqualFold(forwarded, "https")
+}
+
+func wantsJSON(req *http.Request) bool {
+	if req == nil {
+		return false
+	}
+	return strings.Contains(strings.ToLower(req.Header.Get(echo.HeaderAccept)), "application/json")
+}
+
+func cartRedirectTarget(req *http.Request) string {
+	if req == nil {
+		return "/cart?action=show"
+	}
+	referer := strings.TrimSpace(req.Referer())
+	if referer != "" {
+		return referer
+	}
+	path := requestLanguagePrefix(req) + "/cart"
+	if path == "/cart" {
+		return "/cart?action=show"
+	}
+	return path + "?action=show"
+}