add search functionality

1 files changed, 75 insertions, 2 deletions

diff --git a/src/app.rs b/src/app.rs
index b43cd7a..8b06be8 100755
--- a/src/app.rs
+++ b/src/app.rs
@@ -1,8 +1,7 @@
-use std::time::Duration;
-
 use crate::browser::FileBrowser;
 use crate::connection::Connection;
 use crate::list::ContentList;
+use crate::ui::InputMode;
 use mpd::Client;
 
 // Application result type
@@ -18,6 +17,11 @@ pub struct App {
     pub pl_list: ContentList<String>,
     pub selected_tab: SelectedTab,
     pub browser: FileBrowser,
+
+    // Search
+    pub inputmode: InputMode,
+    pub search_input: String,
+    pub cursor_position: usize,
 }
 
 #[derive(Debug, PartialEq, Clone)]
@@ -44,6 +48,9 @@ impl App {
             pl_list,
             selected_tab: SelectedTab::DirectoryBrowser,
             browser,
+            inputmode: InputMode::Normal,
+            search_input: String::new(),
+            cursor_position: 0,
         })
     }
 
@@ -96,4 +103,70 @@ impl App {
             SelectedTab::Playlists => SelectedTab::DirectoryBrowser,
         };
     }
+
+    pub fn search_song(&mut self) -> AppResult<()> {
+        let list = self
+            .conn
+            .songs_filenames
+            .iter()
+            .map(|f| f.as_str())
+            .collect::<Vec<&str>>();
+        let (filename, _) =
+            rust_fuzzy_search::fuzzy_search_sorted(self.search_input.as_str(), &list)
+                .get(0)
+                .unwrap()
+                .clone();
+
+        let song = self.conn.get_song_with_only_filename(filename);
+        self.conn.push(&song)?;
+
+        Ok(())
+    }
+
+    // Cursor movements
+    pub fn move_cursor_left(&mut self) {
+        let cursor_moved_left = self.cursor_position.saturating_sub(1);
+        self.cursor_position = self.clamp_cursor(cursor_moved_left);
+    }
+
+    pub fn move_cursor_right(&mut self) {
+        let cursor_moved_right = self.cursor_position.saturating_add(1);
+        self.cursor_position = self.clamp_cursor(cursor_moved_right);
+    }
+
+    pub fn enter_char(&mut self, new_char: char) {
+        self.search_input.insert(self.cursor_position, new_char);
+
+        self.move_cursor_right();
+    }
+
+    pub fn delete_char(&mut self) {
+        let is_not_cursor_leftmost = self.cursor_position != 0;
+        if is_not_cursor_leftmost {
+            // Method "remove" is not used on the saved text for deleting the selected char.
+            // Reason: Using remove on String works on bytes instead of the chars.
+            // Using remove would require special care because of char boundaries.
+
+            let current_index = self.cursor_position;
+            let from_left_to_current_index = current_index - 1;
+
+            // Getting all characters before the selected character.
+            let before_char_to_delete = self.search_input.chars().take(from_left_to_current_index);
+            // Getting all characters after selected character.
+            let after_char_to_delete = self.search_input.chars().skip(current_index);
+
+            // Put all characters together except the selected one.
+            // By leaving the selected one out, it is forgotten and therefore deleted.
+            self.search_input = before_char_to_delete.chain(after_char_to_delete).collect();
+            self.move_cursor_left();
+        }
+    }
+
+    pub fn clamp_cursor(&self, new_cursor_pos: usize) -> usize {
+        new_cursor_pos.clamp(0, self.search_input.len())
+    }
+
+    pub fn reset_cursor(&mut self) {
+        self.cursor_position = 0;
+    }
 }