Merge pull request 'pdf-by-filename' (#28) from pdf-by-filename-#27 into main

Implemented PDF dir:

+ now you can set a `pdf_path` variable in the config and throuch the CLI flag `--pdf-dir`
+ this dir will be searched recursivley for PDF files which mathc a citekey from the used `.bib` files and connects with them
+ every entry can have multiple PDFs with the citekey-basename in different subdirs
+ the bibfile itself will not be altered
+ additionally, i rewrote the internal popup code for easier contribution

1 files changed, 15 insertions, 0 deletions

diff --git a/src/config.rs b/src/config.rs
index d554c58..8d50d93 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -51,6 +51,11 @@ const DEFAULT_CONFIG: &str = r##"
 ## Use absolute paths (~ for HOME works). Otherwise, loading might not work.
 # file_prefix = "/some/path/prefix"
 
+## Path to folder (with subfolders) containing PDF files with the basename
+## of the format "citekey.pdf". Other PDF basenames are not accepted.
+## Use absolute paths (~ for HOME works). Otherwise, loading might not work.
+# pdf_path = "/path/to/pdf/folder"
+
 # [colors]
 ## Default values for dark-themed terminal
 ## Possible values are:
@@ -84,6 +89,7 @@ pub struct General {
     pub pdf_opener: String,
     pub url_opener: String,
     pub file_prefix: Option<PathBuf>,
+    pub pdf_path: Option<PathBuf>,
 }
 
 /// Substruct [colors] in config.toml
@@ -110,6 +116,7 @@ impl Default for BibiConfig {
                 pdf_opener: select_opener(),
                 url_opener: select_opener(),
                 file_prefix: None,
+                pdf_path: None,
             },
             colors: Colors {
                 main_text_color: Color::Indexed(250),
@@ -140,6 +147,14 @@ impl BibiConfig {
         Ok(cfg_file)
     }
 
+    /// overwright config values with values set explicitly through the
+    /// command line interface
+    pub fn cli_overwrite(&mut self, args: &CLIArgs) {
+        if args.pdf_path.is_some() {
+            self.general.pdf_path = args.pdf_path.clone();
+        }
+    }
+
     /// Activates the default color scheme for light background terminals
     pub fn light_colors(&mut self) {
         self.colors.main_text_color = Color::Indexed(235);