-1 error

README.md

@@ -1,4 +1,47 @@
 # SMS Hook
 
-## What?
+## What
 The purpose of SmsHook is to provide a simple library that provides a webhook where texts can be send to it using something like [Sms Forwarder](https://github.com/bogkonstantin/android_income_sms_gateway_webhook). 
+
+## How
+This captures all the requests coming into /webhook with `{"content":"%text"}` and puts them in a buffer.
+There are 3 methods
+
+### GetLast
+Get last returns the last sms received and its location in the buffer.
+
+### WaitForNew
+WaitForNew keeps waiting for the next sms that will be send the the webhook
+
+### WaitForNewWithTimeout
+Same thing as WaitForNew but stops after a set interval
+
+
+## EXAMPLE
+```go
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"git.directme.in/Joren/SmsHook/smshook"
+)
+
+func main() {
+	smshook.Init(10, "0.0.0.0:8080")
+
+	t := smshook.WaitForNew()
+	fmt.Printf("Received new item: %s\n", t)
+
+	text, pos := smshook.GetLast()
+	fmt.Printf("Last item: %s, Position: %d\n",text,pos)
+
+	t2, s := smshook.WaitForNewWithTimeout(10 * time.Second)
+	if s {
+		fmt.Printf("Received new item: %s\n", t2)
+	} else {
+		fmt.Println("Timed out waiting for new item.")
+	}
+}
+```

ringbuffer/ringbuffer.go

@@ -73,3 +73,21 @@ func (rb *RingBuffer) GetLastPosition() int {
 	return rb.tail
 }
 
+func (rb *RingBuffer) ContainsItem(item string) bool {
+	rb.mu.Lock()
+	defer rb.mu.Unlock()
+
+	if rb.head == -1 {
+		return false
+	}
+
+	for i := 0; i < rb.size; i++ {
+		index := (rb.head + i) % rb.size
+		if rb.buffer[index] == item {
+			return true
+		}
+	}
+
+	return false
+}
+