1 files changed, 35 insertions, 0 deletions
diff --git a/src/keyboard.rs b/src/keyboard.rs
new file mode 100644
index 0000000..ea57d66
--- /dev/null
+++ b/src/keyboard.rs
@@ -0,0 +1,35 @@
+use std::collections::HashMap;
+use teloxide::types::{InlineKeyboardButton, InlineKeyboardMarkup};
+
+/// Create a new InlineKeyboardMarkup from an `hashmap` defined as `<id>:<text>`
+pub async fn make_inline_keyboard(
+    hashmap: &Option<HashMap<String, String>>,
+    callback_type: &str,
+) -> InlineKeyboardMarkup {
+    // This is an array of array because the `InlineKeyboardMarkup`
+    // considers each array as a row.
+    // So, using this format Vec<Vec<..>> will print a button
+    // in `n` different rows in only 1 column.
+    let mut keyboard_array: Vec<Vec<InlineKeyboardButton>> = vec![];
+
+    if let Some(options) = hashmap {
+        for (key, value) in options {
+            keyboard_array.push(vec![InlineKeyboardButton::callback(
+                value.clone(),
+                format!("{}_{}", callback_type, key),
+            )]);
+        }
+    } else {
+        // If the response of the Option ``callback_type`` is None, just answer
+        // an useless button with a text.
+        // I still don't know if it's a good idea to use a callback instead of
+        // a normal text button, but I could handle any such kind of callback
+        keyboard_array.push(vec![InlineKeyboardButton::callback(
+            "No such element".to_string(),
+            "".into(),
+        )]);
+    }
+
+    // The `new` method accepts an interator
+    return InlineKeyboardMarkup::new(keyboard_array);
+}