1 files changed, 150 insertions, 0 deletions
diff --git a/src/show_commit/data.rs b/src/show_commit/data.rs
new file mode 100644
index 0000000..fa16e7d
--- /dev/null
+++ b/src/show_commit/data.rs
@@ -0,0 +1,150 @@
+use crate::commit::Commit;
+use crate::constants::MINIMUM_FULL_WINDOW_WIDTH;
+use crate::display::DisplayColor;
+use crate::show_commit::util::get_stat_item_segments;
+use crate::view::{LineSegment, ViewLine};
+use std::cmp;
+use unicode_segmentation::UnicodeSegmentation;
+
+pub struct Data {
+	height: usize,
+	width: usize,
+	lines: Vec<ViewLine>,
+	line_lengths: Vec<usize>,
+	max_line_length: usize,
+}
+
+impl Data {
+	pub fn new() -> Self {
+		Self {
+			height: 0,
+			width: 0,
+			lines: Vec::new(),
+			line_lengths: Vec::new(),
+			max_line_length: 0,
+		}
+	}
+
+	pub fn reset(&mut self) {
+		self.height = 0;
+		self.width = 0;
+		self.lines.clear();
+		self.line_lengths.clear();
+		self.max_line_length = 0;
+	}
+
+	pub fn update(&mut self, commit: &Commit, window_width: usize, window_height: usize) {
+		if window_width != self.width || window_height != self.height {
+			self.reset();
+
+			self.height = window_height;
+			self.width = window_width;
+
+			let is_full_width = window_width >= MINIMUM_FULL_WINDOW_WIDTH;
+
+			let full_hash = commit.get_hash();
+			let author = commit.get_author();
+			let committer = commit.get_committer();
+			let date = commit.get_date();
+			let body = commit.get_body();
+			let file_stats = commit.get_file_stats();
+
+			let hash_line = if is_full_width {
+				format!("Commit: {}", full_hash)
+			}
+			else {
+				let max_index = cmp::min(full_hash.len(), 8);
+				format!("{:8} ", full_hash[0..max_index].to_string())
+			};
+
+			self.lines.push(ViewLine::new(vec![LineSegment::new_with_color(
+				hash_line.as_str(),
+				DisplayColor::IndicatorColor,
+			)]));
+			self.line_lengths.push(hash_line.len());
+
+			let date_line = if is_full_width {
+				format!("Date: {}", date.format("%c %z"))
+			}
+			else {
+				format!("{}", date.format("%c %z"))
+			};
+
+			self.lines
+				.push(ViewLine::new(vec![LineSegment::new(date_line.as_str())]));
+			self.line_lengths.push(date_line.len());
+
+			if let Some(a) = author.to_string() {
+				let author_line = if is_full_width {
+					format!("Author: {}", a)
+				}
+				else {
+					format!("A: {}", a)
+				};
+				self.lines
+					.push(ViewLine::new(vec![LineSegment::new(author_line.as_str())]));
+				self.line_lengths
+					.push(UnicodeSegmentation::graphemes(author_line.as_str(), true).count());
+			}
+
+			if let Some(c) = committer.to_string() {
+				let committer_line = if is_full_width {
+					format!("Committer: {}", c)
+				}
+				else {
+					format!("C: {}", c)
+				};
+				self.lines
+					.push(ViewLine::new(vec![LineSegment::new(committer_line.as_str())]));
+				self.line_lengths
+					.push(UnicodeSegmentation::graphemes(committer_line.as_str(), true).count());
+			}
+
+			match body {
+				Some(b) => {
+					for line in b.lines() {
+						self.lines.push(ViewLine::new(vec![LineSegment::new(line)]));
+						self.line_lengths
+							.push(UnicodeSegmentation::graphemes(line, true).count());
+					}
+				},
+				None => {},
+			}
+
+			self.lines.push(ViewLine::new(vec![LineSegment::new("")]));
+			self.line_lengths.push(0);
+
+			match file_stats {
+				Some(stats) => {
+					for stat in stats {
+						let stat_to_name = stat.get_to_name();
+						let stat_from_name = stat.get_from_name();
+						let stat_view_line = ViewLine::new(get_stat_item_segments(
+							*stat.get_status(),
+							stat_to_name.as_str(),
+							stat_from_name.as_str(),
+							is_full_width,
+						));
+						self.line_lengths.push(stat_view_line.get_length());
+						self.lines.push(stat_view_line);
+					}
+				},
+				None => {},
+			}
+		}
+	}
+
+	pub fn get_lines(&self) -> &Vec<ViewLine> {
+		&self.lines
+	}
+
+	pub fn get_max_line_length(&self, start: usize, end: usize) -> usize {
+		let mut max_length = 0;
+		for len in self.line_lengths[start..=end].iter() {
+			if *len > max_length {
+				max_length = *len;
+			}
+		}
+		max_length
+	}
+}