Twitter Hash Search Application with #️⃣NodeMCU(ESP8266) #️⃣ILI9341

ESP8266_Twitter_Hash_Search/Web_Fetch.h

@@ -0,0 +1,78 @@
+//https://github.com/Bodmer/TJpg_Decoder
+// Fetch a file from the URL given and save it in SPIFFS
+// Return 1 if a web fetch was needed or 0 if file already exists
+bool getFile(String url, String filename) {
+
+  // If it exists then no need to fetch it
+//  if (SPIFFS.exists(filename) == true) {
+//    Serial.println("Found " + filename);
+//    return 0;
+//  }
+
+  Serial.println("Downloading "  + filename + " from " + url);
+
+  // Check WiFi connection
+  if ((WiFi.status() == WL_CONNECTED)) {
+    HTTPClient http;
+
+    Serial.print("[HTTP] begin...\n");
+
+    // Configure server and url
+    http.begin(url);
+
+    Serial.print("[HTTP] GET...\n");
+    // Start connection and send HTTP header
+    int httpCode = http.GET();
+    if (httpCode > 0) {
+      fs::File f = SPIFFS.open(filename, "w+");
+      if (!f) {
+        Serial.println("file open failed");
+        return 0;
+      }
+      // HTTP header has been send and Server response header has been handled
+      Serial.printf("[HTTP] GET... code: %d\n", httpCode);
+
+      // File found at server
+      if (httpCode == HTTP_CODE_OK) {
+
+        // Get length of document (is -1 when Server sends no Content-Length header)
+        int total = http.getSize();
+        int len = total;
+
+        // Create buffer for read
+        uint8_t buff[128] = { 0 };
+
+        // Get tcp stream
+        WiFiClient * stream = http.getStreamPtr();
+
+        // Read all data from server
+        while (http.connected() && (len > 0 || len == -1)) {
+          // Get available data size
+          size_t size = stream->available();
+
+          if (size) {
+            // Read up to 128 bytes
+            int c = stream->readBytes(buff, ((size > sizeof(buff)) ? sizeof(buff) : size));
+
+            // Write it to file
+            f.write(buff, c);
+
+            // Calculate remaining bytes
+            if (len > 0) {
+              len -= c;
+            }
+          }
+          yield();
+        }
+        Serial.println();
+        Serial.print("[HTTP] connection closed or file end.\n");
+      }
+      f.close();
+    }
+    else {
+      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
+    }
+    http.end();
+  }
+  return 1; // File was fetched from web
+}