Implement active day functionality.

Cargo.lock

@@ -85,6 +85,7 @@ dependencies = [
  "serde",
  "serde_json",
  "structopt",
+ "time",
  "uuid",
 ]
 
@@ -106,6 +107,15 @@ version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 
+[[package]]
+name = "num_threads"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2819ce041d2ee131036f4fc9d6ae7ae125a3a40e97ba64d04fe799ad9dabbb44"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.16"
@@ -271,6 +281,16 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72c91f41dcb2f096c05f0873d667dceec1087ce5bcf984ec8ffb19acddbb3217"
+dependencies = [
+ "libc",
+ "num_threads",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.1"

Cargo.toml

@@ -7,10 +7,9 @@ description = "A CLI habit tracker."
 readme = "./README.md"
 license = "AGPL-3.0-or-later"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 structopt = "0.3"
 uuid = { version = "1.1", features = [ "v4", "fast-rng", "macro-diagnostics" ] }
 serde = { version = "1.0", features = [ "derive" ] }
 serde_json = "1.0"
+time = { version = "0.3", features = [ "local-offset" ] }

src/habit.rs

@@ -18,6 +18,7 @@
 
 use uuid::Uuid;
 use serde::{Serialize, Deserialize};
+use time::OffsetDateTime;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct Habit
@@ -26,11 +27,13 @@ pub struct Habit
 	name:String,
 	bad:bool,
 	weight:u8,
+	// Day 0 is Monday. Use number_days_from_monday() to determine index.
+	days_active:[bool;7],
 }
 
 impl Habit
 {
-	pub fn new(name:String, bad:bool, weight:u8) -> Self
+	pub fn new(name:String, bad:bool, weight:u8, days_active:[bool;7]) -> Self
 	{
 		Self
 		{
@@ -38,9 +41,42 @@ impl Habit
 			name,
 			bad,
 			weight,
+			days_active,
 		}
 	}
 
+	pub fn active_days_string(&self) -> String
+	{
+		let mut res:String = String::new();
+
+		for (i,v) in self.days_active.iter().enumerate()
+		{
+			if *v
+			{
+				res.push_str(match i {
+					0 => "mon",
+					1 => "tue",
+					2 => "wed",
+					3 => "thu",
+					4 => "fri",
+					5 => "sat",
+					6 => "sun",
+					_ => "unk", // this one will never occur, but the compiler complains
+				});
+				res.push(',');
+			}
+		}
+		res.pop();
+
+		return res;
+	}
+
+	pub fn active_today(&self) -> bool
+	{
+		return self.days_active[OffsetDateTime::now_local().unwrap()
+			.weekday().number_days_from_monday() as usize]
+	}
+
 	pub fn get_uid(&self) -> &String { &self.uid }
 	pub fn get_name(&self) -> &String { &self.name }
 	pub fn get_bad(&self) -> bool { self.bad }
@@ -49,4 +85,5 @@ impl Habit
 	pub fn set_name(&mut self, name:String) { self.name = name; }
 	pub fn set_bad(&mut self, bad:bool) { self.bad = bad; }
 	pub fn set_weight(&mut self, weight:u8) { self.weight = weight; }
+	pub fn set_days(&mut self, days:[bool;7]) { self.days_active = days; }
 }

src/habitmgr.rs

@@ -19,6 +19,7 @@
 use std::path::PathBuf;
 use std::fs::OpenOptions;
 use std::io::{BufReader, BufWriter};
+use time::Weekday;
 
 use crate::habit::Habit;
 
@@ -95,9 +96,40 @@ impl HabitMgr
 			});
 	}
 
-	pub fn add(&mut self, name:String, bad:bool, weight:u8, _days:String)
+	fn days_array_from_string(days:String) -> [bool;7]
 	{
-		self.habits.push(Habit::new(name.clone(), bad, weight));
+		let days_list = days.split(",");
+		let mut days_active:[bool;7] = [ false; 7 ];
+		for i in days_list
+		{
+			match i
+			{
+				"mon" =>
+					days_active[Weekday::Monday.number_days_from_monday() as usize] = true,
+				"tue" =>
+					days_active[Weekday::Tuesday.number_days_from_monday() as usize] = true,
+				"wed" =>
+					days_active[Weekday::Wednesday.number_days_from_monday() as usize] = true,
+				"thu" =>
+					days_active[Weekday::Thursday.number_days_from_monday() as usize] = true,
+				"fri" =>
+					days_active[Weekday::Friday.number_days_from_monday() as usize] = true,
+				"sat" =>
+					days_active[Weekday::Saturday.number_days_from_monday() as usize] = true,
+				"sun" =>
+					days_active[Weekday::Sunday.number_days_from_monday() as usize] = true,
+				_ =>
+					panic!("Day {} not recognized!", i),
+			}
+		}
+
+		return days_active;
+	}
+
+	pub fn add(&mut self, name:String, bad:bool, weight:u8, days:String)
+	{
+		let days_active = HabitMgr::days_array_from_string(days);
+		self.habits.push(Habit::new(name.clone(), bad, weight, days_active));
 		self.export_habits();
 
 		println!("New habit {} added.", &name);
@@ -116,6 +148,7 @@ impl HabitMgr
 		println!("Name: {}", habit.get_name());
 		println!("ID: {}", id);
 		println!("UID: {}", habit.get_uid());
+		println!("Active Days: {}", habit.active_days_string());
 		println!("Bad: {}", habit.get_bad());
 		println!("Weight: {}", habit.get_weight());
 	}
@@ -124,7 +157,7 @@ impl HabitMgr
 						 name:Option<String>,
 						 toggle_bad:bool,
 						 weight:Option<u8>,
-						 _days:Option<String>)
+						 days:Option<String>)
 	{
 		if name.is_some()
 		{
@@ -139,20 +172,31 @@ impl HabitMgr
 		{
 			self.habits[id].set_weight(weight.unwrap());
 		}
+		if days.is_some()
+		{
+			let days_active = HabitMgr::days_array_from_string(days.unwrap());
+			self.habits[id].set_days(days_active);
+		}
 		self.export_habits();
 	}
 
-	pub fn list(&self, _all:bool)
+	pub fn list(&self, all:bool)
 	{
 		if self.habits.is_empty()
 		{
 			println!("There are no habits. Add one!");
 		}
+		else if !all && self.habits.iter().all(|i| !i.active_today())
+		{
+			println!("No active habits available today!");
+		}
 		else
 		{
 			println!(" {0: <3} | {1: <5} | {2: <6} | {3}",
 							 "id", "bad", "weight", "name");
 			for (i, habit) in self.habits.iter().enumerate()
+			{
+				if all || habit.active_today()
 				{
 					println!(" {0: <3} | {1: <5} | {2: <6} | {3}",
 									 i,
@@ -163,3 +207,4 @@ impl HabitMgr
 			}
 		}
 	}
+}