Add article source

Cargo.toml

@@ -7,3 +7,4 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+chrono = "0.4.15"

src/bibliography/bib_types/article.rs

@@ -0,0 +1,28 @@
+use chrono::{Local, Date};
+
+/// An article source
+#[derive(Clone, Debug)]
+pub struct Article {
+    pub author: String,
+    pub title: String,
+    pub journal: String,
+    pub date: Date<Local>,
+    pub volume: Option<String>,
+    pub number: Option<String>,
+    pub pages: Option<String>,
+}
+
+impl Article {
+    /// Creates a new article with the mandatory fields filled
+    pub fn new(author: String, title: String, journal: String, date: Date<Local>) -> Self {
+        Self {
+            author,
+            title,
+            journal,
+            date,
+            volume: None,
+            number: None,
+            pages: None,
+        }
+    }
+}

src/bibliography/bib_types/mod.rs

@@ -1,7 +1,11 @@
+use crate::bibliography::bib_types::article::Article;
+
+pub mod article;
+
 /// A type of bibliography entry
 #[derive(Clone, Debug)]
 pub enum BibliographyType {
-    Article,
+    Article(Article),
     Book,
     Booklet,
     InBook,

src/bibliography/bibliography_entry.rs

@@ -5,8 +5,8 @@ use crate::bibliography::bib_types::BibliographyType;
 #[derive(Clone, Debug)]
 pub struct BibliographyEntry {
     key: String,
-    note: Option<String>,
-    bib_type: BibliographyType,
+    pub note: Option<String>,
+    pub bib_type: BibliographyType,
 }
 
 pub type BibliographyEntryReference = Arc<Mutex<BibliographyEntry>>;