1 files changed, 47 insertions, 0 deletions
diff --git a/src/new/replacement.rs b/src/new/replacement.rs
new file mode 100644
index 0000000..6878e61
--- /dev/null
+++ b/src/new/replacement.rs
@@ -0,0 +1,47 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use chrono::{Local, TimeDelta, TimeZone};
+use log::debug;
+
+use crate::constants::{
+    DATE, REPLACEMENT_CHAPTER, REPLACEMENT_CHAPTER_SECTION, REPLACMENT_SECTION_TITLE,
+};
+
+fn get_current_date() -> String {
+    let start = SystemTime::now();
+    let seconds_since_epoch: TimeDelta = TimeDelta::from_std(
+        start
+            .duration_since(UNIX_EPOCH)
+            .expect("Time went backwards"),
+    )
+    .expect("Time does not go backwards");
+
+    debug!(
+        "Adding a date with timestamp: {}",
+        seconds_since_epoch.num_seconds()
+    );
+
+    let our_date = format!(
+        "{}",
+        Local
+            .timestamp_opt(seconds_since_epoch.num_seconds(), 0)
+            // only has unwrap, no expect. But should always work
+            .unwrap()
+            .format("%Y-%m-%d %H:%M:%S%.f %:z")
+    );
+
+    our_date
+}
+
+pub fn untemplatize_section(input: &str, new_section_name: &str, new_chapter_name: &str) -> String {
+    input
+        .replace(REPLACEMENT_CHAPTER_SECTION, &new_chapter_name)
+        .replace(REPLACMENT_SECTION_TITLE, &new_section_name)
+        .replace(DATE, &get_current_date())
+}
+
+pub fn untemplatize_chapter(input: &str, new_chapter_name: &str) -> String {
+    input
+        .replace(REPLACEMENT_CHAPTER, &new_chapter_name)
+        .replace(DATE, &get_current_date())
+}