csv catalog endpoint

daemon.py

@@ -208,6 +208,7 @@ from shares import addShare
 from shares import removeSharedItem
 from shares import expireShares
 from shares import sharesCatalogEndpoint
+from shares import sharesCatalogCSVEndpoint
 from categories import setHashtagCategory
 from languages import getActorLanguages
 from languages import setActorLanguages
@@ -517,6 +518,16 @@ class PubServer(BaseHTTPRequestHandler):
                 print('Blocked User agent: ' + agentDomain)
         return blockedUA
 
+    def _requestCSV(self) -> bool:
+        """Should a csv response be given?
+        """
+        if not self.headers.get('Accept'):
+            return False
+        acceptStr = self.headers['Accept']
+        if 'text/csv' in acceptStr:
+            return True
+        return False
+
     def _requestHTTP(self) -> bool:
         """Should a http response be given?
         """
@@ -10669,13 +10680,22 @@ class PubServer(BaseHTTPRequestHandler):
             # show shared items DFC catalog
             if self._hasAccept(callingDomain) and catalogAuthorized:
                 if not self._requestHTTP():
-                    catalogJson = \
-                        sharesCatalogEndpoint(self.server.baseDir,
-                                              self.server.httpPrefix,
-                                              self.server.domainFull,
-                                              self.server.path)
-                    msg = json.dumps(catalogJson,
-                                     ensure_ascii=False).encode('utf-8')
+                    if self._requestCSV():
+                        catalogStr = \
+                            sharesCatalogCSVEndpoint(self.server.baseDir,
+                                                     self.server.httpPrefix,
+                                                     self.server.domainFull,
+                                                     self.server.path)
+                        msg = json.dumps(catalogStr,
+                                         ensure_ascii=False).encode('utf-8')
+                    else:
+                        catalogJson = \
+                            sharesCatalogEndpoint(self.server.baseDir,
+                                                  self.server.httpPrefix,
+                                                  self.server.domainFull,
+                                                  self.server.path)
+                        msg = json.dumps(catalogJson,
+                                         ensure_ascii=False).encode('utf-8')
                     msglen = len(msg)
                     self._set_headers('application/json',
                                       msglen, None, callingDomain)

shares.py

@@ -913,3 +913,30 @@ def sharesCatalogEndpoint(baseDir: str, httpPrefix: str,
                 endpoint['DFC:supplies'].append(catalogItem)
 
     return endpoint
+
+
+def sharesCatalogCSVEndpoint(baseDir: str, httpPrefix: str,
+                             domainFull: str,
+                             path: str) -> str:
+    """Returns a CSV version of the shares catalog
+    """
+    catalogJson = \
+        sharesCatalogEndpoint(baseDir, httpPrefix, domainFull, path)
+    if not catalogJson:
+        return ''
+    if not catalogJson.get('DFC:supplies'):
+        return ''
+    csvStr = \
+        'id,type,hasType,startDate,expiryDate,' + \
+        'quantity,price,Image,description\n'
+    for item in catalogJson['DFC:supplies']:
+        csvStr += item['@id'] + ','
+        csvStr += item['@type'] + ','
+        csvStr += item['DFC:hasType'] + ','
+        csvStr += item['DFC:startDate'] + ','
+        csvStr += item['DFC:expiryDate'] + ','
+        csvStr += item['DFC:quantity'] + ','
+        csvStr += item['DFC:price'] + ','
+        csvStr += item['DFC:Image'] + ','
+        csvStr += item['DFC:description'] + '\n'
+    return csvStr