Rewrite in Rust

1 files changed, 54 insertions, 0 deletions

diff --git a/src/validation/utils.rs b/src/validation/utils.rs
new file mode 100644
index 0000000..4bff40a
--- /dev/null
+++ b/src/validation/utils.rs
@@ -0,0 +1,54 @@
+use chrono::NaiveDate;
+use std::collections::HashMap;
+use std::str::FromStr;
+
+use crate::model::frequency::Frequency;
+
+pub fn non_empty(
+    form: &HashMap<String, String>,
+    field: &str,
+) -> Option<String> {
+    let s = form.get(field)?.trim();
+    if s.is_empty() {
+        None
+    } else {
+        Some(s.to_string())
+    }
+}
+
+pub fn parse<T: FromStr>(
+    form: &HashMap<String, String>,
+    field: &str,
+) -> Option<T> {
+    let s = form.get(field)?;
+    s.parse::<T>().ok()
+}
+
+pub fn date(form: &HashMap<String, String>, field: &str) -> Option<NaiveDate> {
+    let s = form.get(field)?;
+    NaiveDate::parse_from_str(s, "%Y-%m-%d").ok()
+}
+
+pub fn frequency(
+    form: &HashMap<String, String>,
+    field: &str,
+) -> Option<Frequency> {
+    let s = form.get(field)?;
+    Frequency::from_str(s).ok()
+}
+
+pub fn color(form: &HashMap<String, String>, field: &str) -> Option<String> {
+    let s = form.get(field)?;
+    if s.len() == 7
+        && &s[0..1] == "#"
+        && s[1..]
+            .to_string()
+            .into_bytes()
+            .into_iter()
+            .all(|c| c.is_ascii_hexdigit())
+    {
+        Some(s.to_string())
+    } else {
+        None
+    }
+}