JSON endpoint (only for urls)

Author: fileformat

cmd/server/handleJson.go

@@ -9,7 +9,15 @@ import (
 
 func handleJson(w http.ResponseWriter, r *http.Request, data any) {
 
-	b, err := json.Marshal(data)
+	var b []byte
+	var err error
+
+	if r.URL.Query().Get("pretty") != "" {
+		b, err = json.MarshalIndent(data, "", "  ")
+	} else {
+		b, err = json.Marshal(data)
+	}
+
 	if err != nil {
 		common.Logger.Error("json.Marshal failed", "error", err, "data", data)
 		b = []byte("{\"success\":false,\"err\":\"json.Marshal failed\"}")

cmd/server/server.go

@@ -28,6 +28,7 @@ func main() {
 	http.HandleFunc("POST /upload.html", uploadPostHandler)
 	http.HandleFunc("GET /url.html", urlGetHandler)
 	http.HandleFunc("POST /url.html", urlPostHandler)
+	http.HandleFunc("/url.json", urlJsonHandler)
 	http.HandleFunc("GET /clipboard.html", clipboardGetHandler)
 	http.HandleFunc("POST /clipboard.html", clipboardPostHandler)
 

cmd/server/urlHandler.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
 
@@ -61,3 +62,68 @@ func urlPostHandler(w http.ResponseWriter, r *http.Request) {
 		"Title":  "URL Analysis Results",
 	})
 }
+
+func urlJsonHandler(w http.ResponseWriter, r *http.Request) {
+	var url string
+
+	if r.Method == http.MethodPost {
+		url = r.FormValue("url")
+	} else {
+		url = r.URL.Query().Get("url")
+	}
+	if url == "" {
+		handleJson(w, r, map[string]interface{}{
+			"success": false,
+			"error":   "url parameter missing",
+		})
+		return
+	}
+
+	resp, err := http.Get(url)
+	if err != nil {
+		handleJson(w, r, map[string]interface{}{
+			"success": false,
+			"error":   err.Error(),
+			"source":  url,
+		})
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		handleJson(w, r, map[string]interface{}{
+			"success": false,
+			"error":   fmt.Sprintf("failed to fetch URL (http response=%d)", resp.StatusCode),
+			"source":  url,
+		})
+		return
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		handleJson(w, r, map[string]interface{}{
+			"success": false,
+			"error":   err.Error(),
+			"source":  url,
+		})
+		return
+	}
+
+	svgInfo, svgErr := svgan.SvgCheck(common.Logger, body)
+	if svgErr != nil {
+		handleJson(w, r, map[string]interface{}{
+			"success": false,
+			"error":   svgErr.Error(),
+			"source":  url,
+		})
+		return
+	}
+
+	handleJson(w, r, map[string]interface{}{
+		"success": true,
+		"source":  url,
+		"size":    len(body),
+		"mime":    resp.Header.Get("Content-Type"),
+		"data":    svgInfo,
+	})
+}