account page stubbed: link to etsy sign up

internal/webhooks/etsy/webhooks.go

@@ -4,12 +4,22 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"strconv"
 	"time"
 
+	"ruben/inventory2/internal/domains/platforms/etsy"
 	"ruben/inventory2/internal/domains/raw_events"
 )
 
-func NewWebhookHandler(db *raw_events.Store) http.Handler {
+type Config struct {
+	OAuthRedirectURIWithAcctIDParam string
+}
+
+func NewWebhookHandler(
+	db *raw_events.Store,
+	platform *etsy.Platform,
+	cfg Config,
+) http.Handler {
 	mux := http.NewServeMux()
 
 	mux.HandleFunc("POST /test", func(w http.ResponseWriter, r *http.Request) {
@@ -44,5 +54,56 @@ func NewWebhookHandler(db *raw_events.Store) http.Handler {
 		w.WriteHeader(201)
 	})
 
+	mux.HandleFunc("GET "+cfg.OAuthRedirectURIWithAcctIDParam, func(w http.ResponseWriter, r *http.Request) {
+		// get account id for the request
+
+		acctID, err := strconv.ParseInt(r.PathValue("acctID"), 10, 64)
+		if err != nil || acctID <= 0 {
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+
+		ctx := r.Context()
+
+		q := r.URL.Query()
+		state := q.Get("state")
+
+		// handle failed, potentially non-consenting, request
+
+		if errCode := q.Get("error"); errCode != "" {
+			errDesc := q.Get("error_description")
+			errURI := q.Get("error_uri")
+
+			fmt.Printf(
+				"error in obtaining an OAuth Token: error=%s, error_desc=%s, error_uri=%s, account_id=%d\n",
+				errCode,
+				errDesc,
+				errURI,
+				acctID,
+			)
+
+			platform.InvalidateState(ctx, state)
+
+			return
+		}
+
+		// validate the state to prevent CSRF attacks
+
+		ok, err := platform.HandleNewAuthCode(ctx, acctID, state, q.Get("code"))
+		if err != nil {
+			w.WriteHeader(http.StatusForbidden)
+			fmt.Println("failed to handle new auth code:", err)
+			return
+		}
+		if !ok {
+			w.WriteHeader(http.StatusForbidden)
+			return
+		}
+
+		// TODO: response with a redirect to the user's account page (SUCCESS - new sign up or login)!
+
+		http.Redirect(w, r, fmt.Sprintf("/site/accounts/%d", acctID), http.StatusSeeOther)
+	})
+
 	return mux
 }

internal/webhooks/webhooks.go

@@ -3,18 +3,23 @@ package webhooks
 import (
 	"net/http"
 
+	etsy_platform "ruben/inventory2/internal/domains/platforms/etsy"
 	"ruben/inventory2/internal/domains/raw_events"
 	"ruben/inventory2/internal/webhooks/etsy"
 	"ruben/inventory2/internal/webhooks/tiktok"
 	"ruben/inventory2/internal/webhooks/wix"
 )
 
-func New(db *raw_events.Store) http.Handler {
+type Config struct {
+	Etsy etsy.Config
+}
+
+func New(eventsDB *raw_events.Store, etsyPlatform *etsy_platform.Platform, cfg Config) http.Handler {
 	wh := http.NewServeMux()
 
-	wh.Handle("/etsy/", http.StripPrefix("/etsy", etsy.NewWebhookHandler(db)))
-	wh.Handle("/tiktok/", http.StripPrefix("/tiktok", tiktok.NewWebhookHandler(db)))
-	wh.Handle("/wix/", http.StripPrefix("/wix", wix.NewWebhookHandler(db)))
+	wh.Handle("/etsy/", http.StripPrefix("/etsy", etsy.NewWebhookHandler(eventsDB, etsyPlatform, cfg.Etsy)))
+	wh.Handle("/tiktok/", http.StripPrefix("/tiktok", tiktok.NewWebhookHandler(eventsDB)))
+	wh.Handle("/wix/", http.StripPrefix("/wix", wix.NewWebhookHandler(eventsDB)))
 
 	return wh
 }