stats endpoint

src/date.rs

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+/*
+ * Copyright (C) 2021  Aravinth Manivannan <realaravinth@batsense.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+use sqlx::types::time::OffsetDateTime;
+
+pub struct Date {
+    pub time: OffsetDateTime,
+}
+
+pub const MINUTE: i64 = 60;
+pub const HOUR: i64 = MINUTE * 60;
+pub const DAY: i64 = HOUR * 24;
+pub const WEEK: i64 = DAY * 7;
+
+impl Date {
+    pub fn format(date: &OffsetDateTime) -> String {
+        let timestamp = date.unix_timestamp();
+        let now = OffsetDateTime::now_utc().unix_timestamp();
+
+        let difference = now - timestamp;
+
+        if difference >= 3 * WEEK {
+            date.format("%d-%m-%y")
+        } else if (DAY..(3 * WEEK)).contains(&difference) {
+            format!("{} days ago", date.hour())
+        } else if (HOUR..DAY).contains(&difference) {
+            format!("{} hours ago", date.hour())
+        } else if (MINUTE..HOUR).contains(&difference) {
+            format!("{} minutes ago", date.minute())
+        } else {
+            format!("{} seconds ago", date.second())
+        }
+    }
+
+    pub fn print_date(&self) -> String {
+        Self::format(&self.time)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn print_date_test() {
+        let mut n = Date {
+            time: OffsetDateTime::now_utc(),
+        };
+
+        let timestamp = n.time.unix_timestamp();
+        println!("timestamp: {}", timestamp);
+
+        // seconds test
+        assert!(n.print_date().contains("seconds ago"));
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - 5);
+        assert!(n.print_date().contains("seconds ago"));
+
+        // minutes test
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - MINUTE * 2);
+        assert!(n.print_date().contains("minutes ago"));
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - MINUTE * 56);
+        assert!(n.print_date().contains("minutes ago"));
+
+        // hours test
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - HOUR);
+        assert!(n.print_date().contains("hours ago"));
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - HOUR * 23);
+        assert!(n.print_date().contains("hours ago"));
+
+        // days test
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - 2 * WEEK);
+        assert!(n.print_date().contains("days ago"));
+
+        // date test
+        n.time = OffsetDateTime::from_unix_timestamp(timestamp - 6 * WEEK);
+        let date = n.time.format("%d-%m-%y");
+        assert!(n.print_date().contains(&date))
+    }
+}