Added birthday reminders

+ clippy + fmt

src/models/birthday.rs

@@ -0,0 +1,62 @@
+use crate::error::Error;
+use chrono::Datelike;
+use j_db::database::Database;
+use j_db::model::JdbModel;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct BirthdayEntry {
+    id: Option<u64>,
+    pub discord_id: u64,
+    pub birthday: chrono::NaiveDate,
+}
+
+impl BirthdayEntry {
+    pub fn add_birthday(
+        db: &Database,
+        discord_id: u64,
+        birthday: chrono::NaiveDate,
+    ) -> Result<(), Error> {
+        let mut entry = db
+            .filter(|_, entry: &BirthdayEntry| entry.discord_id == discord_id)?
+            .next()
+            .unwrap_or(BirthdayEntry {
+                id: None,
+                discord_id,
+                birthday,
+            });
+
+        entry.birthday = birthday;
+
+        db.insert(entry)?;
+
+        Ok(())
+    }
+
+    pub fn todays_birthdays(
+        db: &Database,
+        date: chrono::NaiveDate,
+    ) -> Result<Vec<BirthdayEntry>, Error> {
+        let birthdays: Vec<BirthdayEntry> = db
+            .filter(|_, entry: &BirthdayEntry| {
+                entry.birthday.month() == date.month() && entry.birthday.day() == date.day()
+            })?
+            .collect();
+
+        Ok(birthdays)
+    }
+}
+
+impl JdbModel for BirthdayEntry {
+    fn id(&self) -> Option<u64> {
+        self.id
+    }
+
+    fn set_id(&mut self, id: u64) {
+        self.id = Some(id)
+    }
+
+    fn tree() -> String {
+        "Birthday".to_string()
+    }
+}

src/models/mod.rs

@@ -1,5 +1,6 @@
 pub mod album;
 pub mod api_key;
+pub mod birthday;
 pub mod insult_compliment;
 pub mod motivation;
 pub mod random;