Heatmap colors based on the highest visible number of commits instead of commit number for that day

src/heatmap.rs

@@ -1,16 +1,17 @@
 use std::collections::BTreeMap;
 
-use chrono::{DateTime, Datelike, Duration, Local, Utc};
+use chrono::{DateTime, Datelike, Duration, Local};
 use clap::ValueEnum;
 
 use crate::{get_char, get_color, get_color_map, Commit, DAYS, RESET};
 
 pub struct Heatmap {
-	data: [Vec<u32>; 7],
+	data: [Vec<i32>; 7],
 	start_date: DateTime<Local>,
 	end_date: DateTime<Local>,
 	commits: Vec<Commit>,
 	months: Vec<(usize, String)>,
+	highest_count: i32,
 }
 
 impl Heatmap {
@@ -25,6 +26,7 @@ impl Heatmap {
 			end_date,
 			commits,
 			months: vec![],
+			highest_count: 0,
 		};
 
 		let mut grouped_commits = BTreeMap::new();
@@ -36,11 +38,11 @@ impl Heatmap {
 		}
 
 		let mut current_day = start_date;
-		let mut day_of_week = (current_day.weekday().num_days_from_monday()) % 7;
+		let mut day_of_week = current_day.weekday().num_days_from_monday() % 7;
 
 		if day_of_week != 0 {
 			for i in 0..day_of_week {
-				heatmap.data[i as usize].push(0);
+				heatmap.data[i as usize].push(-1);
 			}
 		}
 
@@ -58,10 +60,15 @@ impl Heatmap {
 
 			let value = grouped_commits.get(&current_day.date_naive());
 			match value {
-				Some(val) => heatmap.data[day_of_week as usize].push(*val),
+				Some(val) => {
+					heatmap.data[day_of_week as usize].push(*val);
+					if *val > heatmap.highest_count {
+						heatmap.highest_count = *val;
+					}
+				}
 				None => heatmap.data[day_of_week as usize].push(0),
 			}
-			// println!("{} {value:?}", current_day.date_naive());
+			// println!("{} {value:?} {highest_count}", current_day.date_naive());
 			current_day += Duration::days(1);
 			day_of_week = current_day.weekday().num_days_from_monday() % 7;
 		}
@@ -97,8 +104,16 @@ impl Heatmap {
 		for (day, row) in DAYS.iter().zip(&self.data) {
 			print!("{day} ");
 			for val in row {
-				let color = &get_color_map()[get_color(*val)];
-				print!("{color}{}{RESET} ", get_char());
+				match val {
+					x if *x >= 0 => {
+						let color = &get_color_map()[get_color(*val, self.highest_count)];
+						print!("{color}{}{RESET} ", get_char());
+					}
+					x if *x < 0 => {
+						print!("{RESET}  ");
+					}
+					_ => {}
+				}
 			}
 			print!("\n");
 		}

src/main.rs

@@ -5,7 +5,7 @@
 use std::{cmp::Reverse, sync::OnceLock};
 
 use anyhow::{Context, Result};
-use chrono::{Date, DateTime, Datelike, Duration, Local, NaiveDate, Offset, TimeZone, Utc};
+use chrono::{DateTime, Duration, Local};
 use clap::Parser;
 use gix::{bstr::ByteSlice, ObjectId, Repository};
 use heatmap::HeatmapColors;
@@ -28,7 +28,7 @@ const GREEN_COLOR_MAP: [Rgb; 5] = [
 	Rgb(14, 68, 41),
 	Rgb(0, 109, 50),
 	Rgb(38, 166, 65),
-	Rgb(57, 211, 83),
+	Rgb(25, 255, 64),
 ];
 
 const RED_COLOR_MAP: [Rgb; 5] = [
@@ -76,13 +76,14 @@ fn main() -> Result<()> {
 	Ok(())
 }
 
-fn get_color(val: u32) -> usize {
-	match val {
-		0 => 0,
-		x if x < 2 => 1,
-		x if x < 4 => 2,
-		x if x < 6 => 3,
-		x if x > 8 => 4,
+fn get_color(val: i32, high: i32) -> usize {
+	let color = val as f32 / high as f32;
+	match color {
+		0.0 => 0,
+		x if x <= 0.2 => 1,
+		x if x <= 0.4 => 2,
+		x if x <= 0.8 => 3,
+		x if x > 0.8 => 4,
 		_ => 0,
 	}
 }