Add playlist feature and default channel flag

1 files changed, 68 insertions, 0 deletions

diff --git a/src/playlist.rs b/src/playlist.rs
new file mode 100644
index 0000000..e0df816
--- /dev/null
+++ b/src/playlist.rs
@@ -0,0 +1,68 @@
+pub struct Playlist {
+    data: Vec<Option<AudioRequest>>,
+    read: usize,
+    write: usize,
+    is_full: bool,
+}
+
+impl Playlist {
+    pub fn new() -> Self {
+        Self {
+            data: Vec::with_capacity(3),
+            read: 0,
+            write: 0,
+            is_full: false,
+        }
+    }
+
+    pub fn push(&mut self, req: AudioRequest) -> bool {
+        if self.is_full {
+            return false;
+        }
+
+        if self.data.len() < self.data.capacity() {
+            self.data.push(Some(req));
+        } else {
+            self.data[self.write] = Some(req);
+        }
+
+        self.write = (self.write + 1) % self.data.capacity();
+
+        if self.write == self.read {
+            self.is_full = true;
+        }
+
+        true
+    }
+
+    pub fn is_empty(&self) -> bool {
+        !self.is_full && self.write == self.read
+    }
+
+    pub fn is_full(&self) -> bool {
+        self.is_full
+    }
+
+    pub fn pop(&mut self) -> Option<AudioRequest> {
+        if self.is_empty() {
+            None
+        } else {
+            self.read += 1;
+            self.is_full = false;
+            self.data[self.read].take()
+        }
+    }
+
+    pub fn clear(&mut self) {
+        self.data.clear();
+        self.read = 0;
+        self.write = 0;
+        self.is_full = false;
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct AudioRequest {
+    pub title: String,
+    pub address: String,
+}