feat(api): flush out statistics endpoint

2 files changed, 39 insertions, 0 deletions

diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 98990d4..ce264a8 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -2,3 +2,4 @@
 // SPDX-License-Identifier: GPL-3.0-only
 
 pub mod db;
+pub mod system;
diff --git a/src/utils/system.rs b/src/utils/system.rs
new file mode 100644
index 0000000..7a823a0
--- /dev/null
+++ b/src/utils/system.rs
@@ -0,0 +1,38 @@
+// Copyleft (ɔ) 2021-2021 The Whirlsplash Collective
+// SPDX-License-Identifier: GPL-3.0-only
+
+const WEEK: usize = 60 * 60 * 60 * 60;
+const DAY: usize = 60 * 60 * 60;
+const HOUR: usize = 60 * 60;
+const MIN: usize = 60;
+
+fn make_parts(t: usize, steps: &[usize], mut accum: Vec<usize>) -> Vec<usize> {
+  match steps.split_first() {
+    None => accum,
+    Some((s, steps)) => {
+      accum.push(t / *s);
+      make_parts(t % *s, steps, accum)
+    }
+  }
+}
+
+pub fn seconds_to_hrtime(seconds: usize) -> String {
+  let word = ["week", "day", "hour", "min", "sec"];
+
+  make_parts(seconds, &[WEEK, DAY, HOUR, MIN, 1], Vec::new())
+    .iter()
+    .enumerate()
+    .filter_map(|(i, s)| {
+      if s > &0 {
+        if s > &1 {
+          Some(format!("{} {}s", s, word[i]))
+        } else {
+          Some(format!("{} {}", s, word[i]))
+        }
+      } else {
+        None
+      }
+    })
+    .collect::<Vec<String>>()
+    .join(", ")
+}