open correct file in editor, show file info

2 files changed, 56 insertions, 16 deletions

diff --git a/README.md b/README.md
index 692951d..6afd645 100644
--- a/README.md
+++ b/README.md
@@ -35,14 +35,30 @@ cargo install --path=. --locked
 
 ## Usage
 
-You need to pass a single `.bib` file as first positional argument:
+`bibiman` needs bibfiles (with `.bib` extension) passed as positional arguments.
+You can pass a single file, multiple files, the path of a directory containing
+bibfiles, or mix files and directories.
 
-`bibiman /path/to/bibfile.bib`
+Directories will be searched recursively for files with the `.bib` extension and
+add them to the entry list. Other files will be ignored.Thus, be careful not to
+pass a directory with multiple subdirectories (like eg `/home/usr/`), because
+this could be to some delay while parsing GBs of data.
 
-Of course, this can be aliased if you only use one main file. E.g. in
-`.bashrc`/`.zshrc`:
+The following are valid CLI calls to run `bibiman`:
 
-`alias bibi=bibiman /path/to/bibfile.bib`
+```bash
+# single file
+bibiman bibfile-1.bib
+
+# multiple files
+bibiman bibfile-1.bib bibfile-2.bib
+
+# directory containing bibfiles
+bibman /my/cool/library/
+
+# mixed arguments
+bibiman bibfile-1.bib /my/cool/library/ bibfile-2.bib
+```
 
 ## Features
 
@@ -60,11 +76,11 @@ my personal workflow. There are more to come, the list will be updated:
 - [x] **Open related URL/DOI** with keypress.
 - [x] **Scrollbar** for better navigating.
 - [x] **Sort Entries** by each column (`Authors`, `Title`, `Year`, `Pubtype`)
+- [x] **Load multiple files** into one session.
 - [ ] **Open related notes file** for specific entry.
 - [ ] **Add Entry via DOI** as formatted code.
 - [ ] **Implement config file** for setting some default values like main
       bibfile, PDF-opener, or editor
-- [ ] **Implement logging** of important processes
 - [ ] **Support Hayagriva(`.yaml`)** format as input (_on hold for now_, because
       the Hayagriva Yaml style doesn't offer keywords; s. issue in
       [Hayagriva repo](https://github.com/typst/hayagriva/issues/240)).
diff --git a/src/tui/ui.rs b/src/tui/ui.rs
index 84a1c29..ddb9080 100644
--- a/src/tui/ui.rs
+++ b/src/tui/ui.rs
@@ -15,6 +15,8 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 /////
 
+use std::path::PathBuf;
+
 use super::popup::PopupArea;
 use crate::bibiman::entries::EntryTableColumn;
 use crate::bibiman::{CurrentArea, FormerArea};
@@ -38,6 +40,7 @@ use ratatui::{
         ScrollbarOrientation, Table, Wrap,
     },
 };
+use walkdir::WalkDir;
 
 // Text colors
 const TEXT_FG_COLOR: Color = Color::Indexed(TEXT_FG_COLOR_INDEX);
@@ -124,6 +127,23 @@ pub const fn color_list(list_item: i32, sel_item: i32, highlight: u8, max_diff:
     }
 }
 
+fn count_files(files: &[PathBuf]) -> u16 {
+    let mut count = 0;
+    for f in files {
+        if f.is_file() {
+            count += 1
+        } else if f.is_dir() {
+            for e in WalkDir::new(f) {
+                let f = e.unwrap().into_path();
+                if f.is_file() && f.extension().unwrap() == "bib" {
+                    count += 1
+                }
+            }
+        }
+    }
+    count
+}
+
 pub fn render_ui(app: &mut App, args: &CLIArgs, frame: &mut Frame) {
     let [header_area, main_area, footer_area] = Layout::new(
         Direction::Vertical,
@@ -347,16 +367,20 @@ pub fn render_file_info(app: &mut App, args: &CLIArgs, frame: &mut Frame, rect:
     .horizontal_margin(1)
     .areas(rect);
 
-    let file_info = Line::from(vec![
-        Span::raw("File: ").bold(),
-        Span::raw(
-            // TODO: Only for testing! Need to replace with dir or files vec
-            args.fileargs[0].file_name().unwrap().to_string_lossy(),
-        )
-        .bold(),
-    ])
-    .bg(HEADER_FOOTER_BG);
-    // .render(file_area, buf);
+    let file_info = if args.fileargs.len() == 1 {
+        Line::from(vec![
+            Span::raw("File: ").bold(),
+            Span::raw(args.fileargs[0].file_name().unwrap().to_string_lossy()).bold(),
+        ])
+        .bg(HEADER_FOOTER_BG)
+    } else {
+        Line::from(vec![
+            Span::raw("Multiple files (").bold(),
+            Span::raw(count_files(&args.fileargs).to_string()).bold(),
+            Span::raw(")"),
+        ])
+        .bg(HEADER_FOOTER_BG)
+    };
 
     let cur_keywords = Line::from(if !app.bibiman.tag_list.selected_keywords.is_empty() {
         vec![