Added documentation and made compilable for testing reasons

src/main.rs

@@ -4,7 +4,7 @@ Language: Rustc 1.71.0
 ide: CLion
 Operating system: POP_OS
 Purpose: TUI-based ereader and library manager for Linux terminal environments.
-Last edited: 11/3/23
+Last edited: 11/14/23
 */
 
 mod html_module;
@@ -17,7 +17,13 @@ use std::i32;
 use std::path::Path;
 
 
-//this function will determine if Bibliofile has been opened before. If it has not, it will create a library folder under /opt/bibliofile.
+/*
+This function will determine if Bibliofile has been opened before. If it has not, it will create a library folder under /opt/bibliofile.
+
+Function: library_Exists
+param: none
+Return Type: void
+ */
 fn library_exists(){
 
 
@@ -31,8 +37,13 @@ fn library_exists(){
 
 }
 
-//initial function. Reads the ebook passed by argument.
+/*
-//TODO: add visual library to pull up ebooks.
+initial function. Reads the ebook passed by argument, and checks if library directory exists in Linux.
+name: main
+params: none
+Return type: void
+ */
+
 fn main() {
     //library_exists();
     if env::args().len() == 1 {
@@ -49,7 +60,12 @@ fn main() {
 }
 
 
-//this function manages the screen
+/*
+Initial screen setup. Sets up the initial TUI screen that will be used by the rest of the application
+function: screen_func
+Params: string
+Return type: none
+ */
 fn screen_func(epub_file: &str){
     
     let mut page_num = 1;
@@ -63,7 +79,7 @@ fn screen_func(epub_file: &str){
     // Creates the cursive root - required for every application.
     let mut siv = cursive::default();
     siv.add_global_callback('q', |s| s.quit());
-    siv.add_global_callback('d', move |s| { get_text(s, &page_num, "next"); });
+    siv.add_global_callback('d', move |s| { get_text(s); });
 
     // Creates a dialog with a single "Quit" button
     siv.add_layer(Dialog::around(TextView::new(text))
@@ -78,17 +94,21 @@ fn screen_func(epub_file: &str){
 
 
 
-//TODO: Because page_num will outlive s, Must write page_num to file and call read it to see what page is needed to be open.
+/*
-//This will also work for placekeeping purposes if another book is opened and you want to return to it
+This function is called whenever the screen gets refreshed. This is seperate from get_init_text because
-
+it requires the TUI to already be active to be called.
-
+function: get_text
+params: Cursive session
+Returns type: void
+ */
 fn get_text(s: &mut Cursive) {
     s.pop_layer();
     let args: Vec<String> = env::args().collect();
     let filename = &args[1];
     let doc = EpubDoc::new(filename);
     let mut doc = doc.unwrap();
-    let mut usize_num = *page_num as usize;
+    let page_num = 1;
+    let mut usize_num = page_num as usize;
     usize_num = usize_num + 1;
 
     let title = doc.mdata("title");
@@ -97,6 +117,8 @@ fn get_text(s: &mut Cursive) {
     let content = doc.get_current_str();
     let str_content = content.unwrap();
     let text = html_module::main(str_content.0);
+
+    //refreshed screen layout
     s.add_layer(Dialog::around(TextView::new(text))
                       .title(title.unwrap() + " page: " + &usize_num.to_string())
                       .scrollable()
@@ -105,6 +127,11 @@ fn get_text(s: &mut Cursive) {
 
 }
 
+
+
+/*
+Function called
+ */
 fn get_init_text(epub_file: &str, mut page_num: &i32, direction: &str) -> (String, String, i32){
         let doc = EpubDoc::new(&epub_file);
         assert!(doc.is_ok());