1 files changed, 51 insertions, 0 deletions
diff --git a/src/backend/bib.rs b/src/backend/bib.rs
new file mode 100644
index 0000000..aa7272f
--- /dev/null
+++ b/src/backend/bib.rs
@@ -0,0 +1,51 @@
+use biblatex::Bibliography;
+use regex::Regex;
+use std::{
+    fs,
+    path::{Path, PathBuf},
+};
+
+use super::cliargs::{CLIArgs, PosArgs};
+
+// Set necessary fields
+// TODO: can surely be made more efficient/simpler
+pub struct Bibi {
+    pub citekeys: Vec<String>,
+    // pub bibliography: Bibliography,
+}
+
+pub fn get_bibfile(filename: impl AsRef<Path>) -> String {
+    let bibfile = fs::read_to_string(&filename).unwrap();
+    bibfile
+}
+
+pub fn get_citekeys(bibstring: &Bibliography) -> Vec<String> {
+    // let bib = Bibliography::parse(&get_bibfile(CLIArgs::parse_cli_args().bibfilearg)).unwrap();
+    // // Define Regex to match citekeys
+    // let re = Regex::new(r"(?m)^\@[a-zA-Z]*\{(.*)\,").unwrap();
+    // // Declare empty vector to fill with captured keys
+    // // Has to be Vec<&str> because of captures_iter method
+    // let mut keys = vec![];
+    // for (_, [key]) in re.captures_iter(&bibfilestring).map(|c| c.extract()) {
+    //     keys.push(key);
+    // }
+    // // Transform Vec<&str> to Vec<String> which is needed by the struct Bibi
+    // let mut citekeys: Vec<String> = keys.into_iter().map(String::from).collect();
+    // // Sort vector items case-insensitive
+    // citekeys.sort_by_key(|name| name.to_lowercase());
+    // citekeys
+    let mut citekeys: Vec<String> = bibstring.iter().map(|entry| entry.to_owned().key).collect();
+    citekeys.sort_by_key(|name| name.to_lowercase());
+    citekeys
+}
+
+impl Bibi {
+    pub fn new() -> Self {
+        // TODO: Needs check for config file path as soon as config file is impl
+        let bib = Bibliography::parse(&get_bibfile(PosArgs::parse_pos_args().bibfilearg)).unwrap();
+        Self {
+            citekeys: get_citekeys(&bib),
+            // bibliography: biblatex::Bibliography::parse(&bibfilestring).unwrap(),
+        }
+    }
+}