From 27045b64cd5ff4190ef7a69734183ffb481f2fce Mon Sep 17 00:00:00 2001
From: Stephan Dilly <dilly.stephan@gmail.com>
Date: Mon, 16 Mar 2020 14:42:41 +0100
Subject: [PATCH] show full diff

---
 src/app.rs | 80 +++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 73 insertions(+), 7 deletions(-)

diff --git a/src/app.rs b/src/app.rs
index d126b361..1f463fa5 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -1,11 +1,11 @@
 use crossterm::event::{Event, KeyCode};
-use git2::Repository;
+use git2::{DiffFormat, Repository};
 use std::cmp;
 use tui::{
     backend::Backend,
-    layout::{Constraint, Direction, Layout, Rect},
+    layout::{Constraint, Direction, Layout, Rect, Alignment},
     style::{Color, Modifier, Style},
-    widgets::{Block, Borders, SelectableList, Widget},
+    widgets::{Block, Borders, SelectableList, Widget, Paragraph, Text},
     Frame,
 };
 
@@ -13,6 +13,8 @@ use tui::{
 pub struct App {
     status_items: Vec<String>,
     status_select: Option<usize>,
+    diff: String,
+    offset:u16,
     do_quit: bool,
 }
 
@@ -50,6 +52,30 @@ impl App {
         } else {
             None
         };
+
+        self.diff = self.get_diff();
+    }
+
+    ///
+    pub fn get_diff(&mut self) -> String {
+        let repo = Repository::init("./").unwrap();
+
+        if repo.is_bare() {
+            panic!("bare repo")
+        }
+
+        let diff = repo.diff_index_to_workdir(None, None).unwrap();
+
+        let mut res = String::new();
+
+        diff.print(DiffFormat::Patch, |_delta, _hunk, line| {
+            let content = String::from_utf8_lossy(line.content());
+            res.push_str(content.chars().as_str());
+            true
+        })
+        .unwrap();
+
+        res
     }
 
     ///
@@ -67,10 +93,17 @@ impl App {
             self.status_select,
         );
 
-        Block::default()
-            .title("Block 2")
-            .borders(Borders::ALL)
+        Paragraph::new([Text::raw(self.diff.clone())].iter())
+            .block(Block::default().title("Diff").borders(Borders::ALL))
+            .style(Style::default().fg(Color::White).bg(Color::Black))
+            .alignment(Alignment::Left)
+            .scroll(self.offset)
             .render(f, chunks[1]);
+
+        // Block::default()
+        //     .title("Diff")
+        //     .borders(Borders::ALL)
+        //     .render(f, chunks[1]);
     }
 
     ///
@@ -85,8 +118,41 @@ impl App {
         if ev == Event::Key(KeyCode::Down.into()) {
             self.input(1);
         }
+
+        if ev == Event::Key(KeyCode::PageDown.into()) {
+            self.offset+=1;
+        }
+        if ev == Event::Key(KeyCode::PageUp.into()) {
+            if self.offset>0{
+                self.offset-=1;
+            }
+        }
+
+        if ev == Event::Key(KeyCode::Enter.into()) {
+            // self.index_add();
+        }
     }
 
+    // fn index_add(&mut self) {
+    //     let repo = Repository::init("./").unwrap();
+
+    //     let status = repo.statuses(None).unwrap();
+
+    //     let index = repo.index().unwrap();
+    //     index.add(entry)
+
+    //     self.status_items = status
+    //         .iter()
+    //         .map(|e| e.path().unwrap().to_string())
+    //         .collect();
+
+    //     self.status_select = if self.status_items.len() > 0 {
+    //         Some(0)
+    //     } else {
+    //         None
+    //     };
+    // }
+
     fn input(&mut self, delta: i32) {
         let items_len = self.status_items.len();
         if items_len > 0 {
@@ -114,7 +180,7 @@ fn draw_list<B: Backend, T: AsRef<str>>(
         .items(items)
         .select(select)
         .style(Style::default().fg(Color::White))
-        .highlight_style(Style::default().modifier(Modifier::ITALIC))
+        .highlight_style(Style::default().modifier(Modifier::BOLD))
         .highlight_symbol(">")
         .render(f, r);
 }