From e34adfddcf477daa85ff843c609e10bc1212e60a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ahmet=20Kaan=20G=C3=9CM=C3=9C=C5=9E?=
 <96421894+Tahinli@users.noreply.github.com>
Date: Wed, 11 Dec 2024 21:28:40 +0300
Subject: [PATCH] feat: :sparkles: error type and input check

---
 src/error.rs | 28 ++++++++++++++++++++++++++++
 src/lib.rs   |  1 +
 src/utils.rs | 15 +++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100644 src/error.rs

diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..53db109
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,28 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub enum ForumInputError {
+    ForbiddenCharacter,
+    ForbiddenString,
+    EmptyParameter,
+}
+
+impl std::fmt::Display for ForumInputError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            &ForumInputError::ForbiddenCharacter => {
+                write!(f, "Forbidden Character Detected")
+            }
+            &ForumInputError::ForbiddenString => {
+                write!(f, "Forbidden String Detected")
+            }
+            &ForumInputError::EmptyParameter => write!(f, "Parameter is Empty"),
+        }
+    }
+}
+
+impl std::error::Error for ForumInputError {
+    fn cause(&self) -> Option<&dyn std::error::Error> {
+        self.source()
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 2381027..27fc9e4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod database;
+pub mod error;
 pub mod feature;
 pub mod utils;
 
diff --git a/src/utils.rs b/src/utils.rs
index 4650a52..565e99e 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,5 +1,7 @@
 use std::{fs::File, io::Read};
 
+use crate::error::ForumInputError;
+
 pub fn naive_toml_parser(file_location: &str) -> (String, Vec<String>) {
     let mut toml_file = File::open(file_location).unwrap();
     let mut toml_ingredients = String::default();
@@ -22,3 +24,16 @@ pub fn naive_toml_parser(file_location: &str) -> (String, Vec<String>) {
 
     (header, parsed)
 }
+
+pub fn input_checker(input: &String) -> Result<String, ForumInputError> {
+    if input.is_empty() {
+        Err(ForumInputError::EmptyParameter)
+    } else {
+        let input_without_space = input.split(' ').collect::<Vec<_>>().join("");
+        if input_without_space.chars().all(char::is_alphanumeric) {
+            Ok(input.to_owned())
+        } else {
+            Err(ForumInputError::ForbiddenCharacter)
+        }
+    }
+}