Add graph

src/main.cpp

@@ -15,10 +15,20 @@ const unsigned long refreshInterval = 60000; // 60 seconds
 
 String lastEventId = "";
 String problems[10];
-String problemDescriptions = "Test";
+String problemDescriptions;
 int problemCount = 0;
-int severityCounts[5] = {0};
+int severityCounts[6] = {0};
 bool newProblemsDetected = false;
+int totalProblems = 0; // Variable to store the total number of active problems
+
+// History buffer for the graph
+const int maxHistorySize = 30;
+int problemHistory[maxHistorySize] = {0};  // Array to store history
+int historyIndex = 0;                      // Current index for the latest value
+
+int scrollPos = SCREEN_WIDTH;         // Global variable to keep track of the scroll position
+unsigned long lastScrollTime = 0;     // To control the scroll speed
+const int scrollDelay = 120;          // Delay in milliseconds between scroll updates
 
 void initSystems() {
   pinMode(PIN_BTN_L, INPUT);
@@ -31,9 +41,10 @@ void initSystems() {
   Wire.setClock(400000L);    // Set I2C to Fast Mode (400 kHz)
   display.ssd1306_command(SSD1306_SETCONTRAST);
   display.ssd1306_command(200);  // Value between 0 and 255
+
   // Initialize the SSD1306 display
   if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Adjust I2C address if needed
-    for(;;); // Don't proceed, loop forever
+    for (;;); // Don't proceed, loop forever
   }
 
   // Rotate the display 180 degrees
@@ -41,14 +52,12 @@ void initSystems() {
 
   // Clear the display buffer
   display.clearDisplay();
-  display.setTextSize(1);      
+  display.setTextSize(1);
   display.setTextColor(WHITE);
   display.setCursor(0, 0);
   display.display();
 }
 
-int totalProblems = 0; // Variable to store the total number of active problems
-
 void fetchActiveProblems() {
   WiFiClient client;
   HTTPClient http;
@@ -90,6 +99,10 @@ void fetchActiveProblems() {
 
       totalProblems = result.size(); // Set total problems count
 
+      // Store the current totalProblems in the history buffer
+      problemHistory[historyIndex] = totalProblems;
+      historyIndex = (historyIndex + 1) % maxHistorySize;  // Circular buffer
+
       int newProblemCount = 0;
       for (JsonObject problem : result) {
         String eventId = problem["eventid"].as<String>();
@@ -101,10 +114,6 @@ void fetchActiveProblems() {
           newProblemsDetected = true;
         }
 
-        if (newProblemCount < 10) {
-          problems[newProblemCount] = description;
-        }
-
         if (severity >= 0 && severity < 5) {
           severityCounts[severity]++;
         }
@@ -121,60 +130,87 @@ void fetchActiveProblems() {
     } else {
       beep(1000);
     }
-  } else {    
+  } else {
-    display.clearDisplay();
+    problemDescriptions="Zabbix API error";
-    display.setCursor(0,30);
-    display.print("Error querying zabbix API");
   }
 
   http.end();
 }
 
-int scrollPos = SCREEN_WIDTH;         // Global variable to keep track of the scroll position
+void playAlertMelody() {
-unsigned long lastScrollTime = 0; // To control the scroll speed
+  int toneDuration = 60; // Each tone lasts 150ms
-const int scrollDelay = 150; // Delay in milliseconds between scroll updates
+  int pauseDuration = 20; // Pause between tones
+
+  // Play first tone
+  tone(PIN_BUZZER, 1500);  // 1000 Hz
+  delay(toneDuration);
+  noTone(PIN_BUZZER);
+  delay(pauseDuration);
+
+  // Play second tone
+  tone(PIN_BUZZER, 1200);  // 1200 Hz
+  delay(toneDuration);
+  noTone(PIN_BUZZER);
+  delay(pauseDuration);
+
+  // Play third tone
+  tone(PIN_BUZZER, 1500);  // 1500 Hz
+  delay(toneDuration);
+  noTone(PIN_BUZZER);
+}
 
 void displayProblems() {
   display.clearDisplay();
   display.setTextSize(1);
-  display.setCursor(0,0);
+  display.setCursor(0, 0);
-  display.print("N:");
+  display.printf(" I:%d W:%d A:%d H:%d D:%d",
-  display.print(severityCounts[0]);
+                 severityCounts[1],
-  display.print("I:");
+                 severityCounts[2],
-  display.print(severityCounts[1]);
+                 severityCounts[3],
-  display.print("W:");
+                 severityCounts[4],
-  display.print(severityCounts[2]);
+                 severityCounts[5]);
-  display.print("A:");
+  display.drawLine(0, 45, 127, 45, 1);  // Line under the graph
-  display.print(severityCounts[3]);
+  display.drawLine(0, 10, 127, 10, 1);  // Line under the graph
-  display.print("H:");
+
-  display.print(severityCounts[4]);
+  // Draw the history graph
-  display.print("D:");
+  int graphHeight = 30;   // Height of the graph
-  display.print(severityCounts[0]);
+  int graphTop = 15;      // Top position of the graph
-  display.setCursor(0,10);
+  int graphBottom = graphTop + graphHeight;
-  display.print("Total Problems: ");
+
-  display.print(totalProblems);  // Display total problems
+  int maxProblems = *std::max_element(problemHistory, problemHistory + maxHistorySize); // Find max for scaling
+  if (maxProblems == 0) maxProblems = 1;  // Avoid division by zero
+
+  for (int i = 0; i < maxHistorySize - 1; i++) {
+    int x1 = (i * SCREEN_WIDTH) / maxHistorySize;
+    int x2 = ((i + 1) * SCREEN_WIDTH) / maxHistorySize;
+
+    int y1 = graphBottom - (problemHistory[(historyIndex + i) % maxHistorySize] * graphHeight) / maxProblems;
+    int y2 = graphBottom - (problemHistory[(historyIndex + i + 1) % maxHistorySize] * graphHeight) / maxProblems;
+
+    display.drawLine(x1, y1, x2, y2, 1);  // Draw line between points
+  }
+
+  // Scroll text below the graph
+  int stateWidth = strlen(problemDescriptions.c_str()) * 12;
 
-  int stateWidth = strlen(problemDescriptions.c_str()) * 12;  // Approximate width of the status text in pixels
-  // Scroll the text to the left
   if (!is_display_off) {
     if (millis() - lastScrollTime > scrollDelay) {
-      // Update scroll position
+      scrollPos -= 11;
-      scrollPos -= 11;  // Move left by 1 pixel each time
-
       lastScrollTime = millis();
 
-      // If the text has completely scrolled off, reset scroll position to start from the right
       if (scrollPos < -stateWidth) {
         scrollPos = SCREEN_WIDTH;
       }
     }
   }
-  // Draw the file name with current scroll position
+
   display.setTextSize(2);
   display.setCursor(scrollPos, 48);
   display.print(problemDescriptions);
-  display.drawLine(0,46,127,46,1);
+  display.setTextSize(1);
-  
+  display.fillRect(117,35,10,10,0);
+  display.setCursor(118,36);
+  display.print(totalProblems);
   display.display();
 }
 
@@ -196,7 +232,7 @@ void loop() {
   displayProblems();
 
   if (newProblemsDetected) {
-    beep(1000);
+    playAlertMelody();
     newProblemsDetected = false;
   }
-}
+}