From 5330d5fab0b7094931a3b8ec20e4a8aae9b8c252 Mon Sep 17 00:00:00 2001
From: Triston Armstrong <tarmstrong95@proton.me>
Date: Sun, 31 Mar 2024 15:24:19 -0500
Subject: [PATCH] (feat): make utils funcs for transforming file names

Takes file names and transforms them into more title worthy formats:
"some_file_here.md" -> "Some File Here"
---
 src/main.rs  |   4 +-
 src/utils.rs | 139 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+), 3 deletions(-)
 create mode 100644 src/utils.rs

diff --git a/src/main.rs b/src/main.rs
index 13959c1..64088f0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,9 @@
-use shuttle_axum::AxumService;
-use shuttle_runtime::{CustomError, Error};
-
 mod errors;
 mod models;
 mod router;
 mod routes;
 mod templates;
+mod utils;
 
 #[shuttle_runtime::main]
 async fn main() -> shuttle_axum::ShuttleAxum {
diff --git a/src/utils.rs b/src/utils.rs
new file mode 100644
index 0000000..cdcc0e9
--- /dev/null
+++ b/src/utils.rs
@@ -0,0 +1,139 @@
+use serde::ser::Error;
+
+pub fn rm_delimeter(value: String, delimeter: String, replacment: String) -> String {
+    let result: String;
+    // split by delimeter
+    let parts = value.split(&delimeter).collect::<Vec<_>>();
+    result = parts.join(&replacment).to_string();
+
+    // merge to new string
+    result.to_string()
+}
+
+/// this function assumes that any "." denotes a file extension break
+/// example - "some file.txt.bak" will become "some file"
+/// example 2 = "some file.is cool.txt.bak" will become "some file"
+pub fn rm_path_ext(value: String) -> String {
+    let parts = value.split(".").collect::<Vec<_>>();
+    parts.get(0).unwrap().to_string()
+}
+
+pub fn upper_first_letter(value: &mut str) -> Result<String, String> {
+    if value.len() < 1 {
+        return Err("Cannot parse an empty string as value".to_string());
+    }
+    let (left, _) = value.split_at_mut(1);
+    left.make_ascii_uppercase();
+    Ok(value.to_owned().clone())
+}
+
+pub fn upper_all_words_first_letters(value: String) -> Result<String, String> {
+    if value.len() < 1 {
+        return Err("Cannot parse an empty string".to_string());
+    }
+    let parts = value.split(" ").collect::<Vec<_>>();
+    let mut new_parts: Vec<String> = vec!["".to_string(); parts.len()];
+    for part_index in 0..parts.len() {
+        let part = parts[part_index];
+        let mut x = part.to_owned().clone();
+        let val = upper_first_letter(&mut x).unwrap();
+        new_parts[part_index] = val;
+    }
+
+    Ok(new_parts.join(" "))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_removes_by_delimiter() {
+        assert_eq!(
+            rm_delimeter(
+                "a_hog_hopped_a_log.txt".to_string(),
+                "_".to_string(),
+                " ".to_string(),
+            ),
+            "a hog hopped a log.txt"
+        );
+        assert_eq!(
+            rm_delimeter(
+                "a-hog-hopped-a-log.txt".to_string(),
+                "-".to_string(),
+                " ".to_string(),
+            ),
+            "a hog hopped a log.txt"
+        );
+        assert_eq!(
+            rm_delimeter(
+                "a-hog-hopped-a_log.txt".to_string(),
+                "-".to_string(),
+                " ".to_string(),
+            ),
+            "a hog hopped a_log.txt"
+        );
+        assert_eq!(
+            rm_delimeter(
+                "a-hog-hopped-a_log.txt".to_string(),
+                "".to_string(),
+                "".to_string(),
+            ),
+            "a-hog-hopped-a_log.txt"
+        );
+        assert_eq!(
+            rm_delimeter("".to_string(), "".to_string(), "".to_string()),
+            ""
+        );
+        assert_eq!(
+            rm_delimeter("".to_string(), "_".to_string(), "-".to_string()),
+            ""
+        );
+    }
+
+    #[test]
+    fn it_removes_file_extention() {
+        assert_eq!(
+            rm_path_ext("a_hog_hopped_a_log.txt".to_string()),
+            "a_hog_hopped_a_log"
+        );
+        assert_eq!(
+            rm_path_ext("a hog hopped.a log.bak.txt".to_string()),
+            "a hog hopped"
+        );
+        assert_eq!(rm_path_ext(".txt".to_string()), "");
+    }
+
+    #[test]
+    fn it_uppercases_first_letter_of_word() {
+        assert_eq!(
+            upper_first_letter(&mut "banana".to_owned()).unwrap(),
+            "Banana"
+        );
+        assert_eq!(
+            upper_first_letter(&mut "".to_owned()).unwrap_err(),
+            "Cannot parse an empty string as value"
+        );
+        assert_eq!(upper_first_letter(&mut "Bang".to_owned()).unwrap(), "Bang");
+        assert_eq!(
+            upper_first_letter(&mut "_banana".to_owned()).unwrap(),
+            "_banana"
+        );
+    }
+
+    #[test]
+    fn it_uppercases_first_letter_of_every_word() {
+        assert_eq!(
+            upper_all_words_first_letters("triston is cool".to_string()).unwrap(),
+            "Triston Is Cool"
+        );
+        assert_eq!(
+            upper_all_words_first_letters("".to_string()).unwrap_err(),
+            "Cannot parse an empty string"
+        );
+        assert_eq!(
+            upper_all_words_first_letters("Triston Is Cool".to_string()).unwrap(),
+            "Triston Is Cool"
+        );
+    }
+}