feat: add Facebook cache invalidation functions and update server routes

apps/backend/facebook.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"backend/queries"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+//curl -i -X POST \
+// "https://graph.facebook.com/v23.0/?scrape=true&id=https%3A%2F%2Fwww.infoalloggi.it%2Fannuncio%2F2594&access_token=1795915138017917%7CiS9PlNKfIsyek5GxVcCsvs0vHd8"
+
+func invalidateFacebookCache(url string) error {
+	accessToken := "1468971870274193|1WvBKvZkWAwtEJcKnjUnYc639Kg"
+	apiURL := "https://graph.facebook.com/v24.0/"
+	req, err := http.NewRequest("POST", apiURL, nil)
+	if err != nil {
+		return fmt.Errorf("Error creating request: %v", err)
+	}
+	q := req.URL.Query()
+	q.Add("id", url)
+	q.Add("scrape", "true")
+	q.Add("access_token", accessToken)
+	req.URL.RawQuery = q.Encode()
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("Error making request: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+
+		return fmt.Errorf("Failed to invalidate Facebook cache. Status Code: %d", resp.StatusCode)
+	} else {
+		fmt.Printf("Successfully invalidated Facebook cache for URL: %s\n", url)
+	}
+
+	return nil
+}
+
+func invalidateAllAnnunciFB() error {
+	annunci, err := queries.AnnunciGetActive()
+	if err != nil {
+		return fmt.Errorf("failed to get active annunci: %w", err)
+	}
+	delayBetweenRequestsMs := 20
+	for _, annuncio := range annunci {
+		url := fmt.Sprintf("https://www.infoalloggi.it/annuncio/%s", annuncio)
+		err := invalidateFacebookCache(url)
+		if err != nil {
+			fmt.Printf("Failed to invalidate FB cache for %s: %v\n", url, err)
+		}
+		time.Sleep(time.Duration(delayBetweenRequestsMs) * time.Millisecond)
+	}
+	return nil
+
+}

apps/backend/server.go

@@ -161,6 +161,12 @@ func (s *Server) SetupRoutes() *echo.Echo {
 		if err != nil {
 			return c.String(http.StatusInternalServerError, err.Error())
 		}
+		/*
+			err = invalidateAllAnnunciFB()
+			if err != nil {
+				return c.String(http.StatusInternalServerError, err.Error())
+			}
+		*/
 		return c.String(http.StatusOK, "Updated")
 	})
 	e.GET("/update-cod/:cod", func(c echo.Context) error {
@@ -194,7 +200,13 @@ func (s *Server) SetupRoutes() *echo.Echo {
 		if err != nil {
 			return c.String(http.StatusInternalServerError, err.Error())
 		}
-
+		/*
+			url := fmt.Sprintf("https://www.infoalloggi.it/annuncio/%s", cod)
+			err = invalidateFacebookCache(url)
+			if err != nil {
+				return c.String(http.StatusInternalServerError, err.Error())
+			}
+		*/
 		return c.String(http.StatusOK, "Updated")
 	})