use crate::error; use crate::state; use crate::colour; use std::io; use std::fs; use std::fmt; use std::mem; use std::path; use std::io::{Write, Seek}; use std::collections::HashSet; use colored::Colorize; pub type Id = u64; pub struct Task { path : path::PathBuf, file : fs::File, pub data : InternalTask, } #[derive(Default, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, clap::ValueEnum, serde::Serialize, serde::Deserialize)] pub enum Priority { #[default] Low, Medium, High, } impl fmt::Display for Priority { fn fmt(&self, f : &mut fmt::Formatter<'_>) -> fmt::Result { use Priority::*; let priority = match self { Low => "low", Medium => "medium", High => "high", }; write!(f, "{}", priority) } } impl Priority { pub fn coloured(&self) -> String { use Priority::*; let priority = match self { Low => "low".truecolor(46, 204, 113), Medium => "medium".truecolor(241, 196, 15), High => "high".truecolor(231, 76, 60), }; format!("{}", priority) } } #[derive(Debug, serde::Serialize, serde::Deserialize)] pub struct TimeEntry { hours : u32, minutes : u8, } #[derive(Debug, serde::Serialize, serde::Deserialize)] pub struct InternalTask { pub id : Id, pub name : String, pub info : Option, pub tags : HashSet, pub dependencies : HashSet, pub priority : Priority, //due : Option, pub time_entries : Vec, pub created : chrono::NaiveDateTime, pub complete : bool, pub discarded : bool, } impl Task { pub fn new(name : String, info : Option, tags : Vec, dependencies : Vec, priority : Option, vault_folder : &path::Path, state : &mut state::State) -> Result { if name.chars().all(|c| c.is_numeric()) { return Err(error::Error::Generic(String::from("Name must not be purely numeric"))); }; let id = state.data.next_id; state.data.next_id += 1; let path = vault_folder.join("notes").join(&format!("{}.toml", id)); let mut file = fs::File::options() .write(true) .create(true) .open(&path)?; let data = InternalTask { id, name, info, tags : tags.into_iter().collect(), dependencies : dependencies.into_iter().collect(), priority : priority.unwrap_or_default(), time_entries : Vec::new(), created : chrono::Utc::now().naive_local(), complete : false, discarded : false, }; file.set_len(0)?; file.seek(io::SeekFrom::Start(0))?; file.write_all(toml::to_string(&data)?.as_bytes())?; state.index_insert(data.name.clone(), id); Ok(Task { path, file, data, }) } /// Less graceful error handling on this for task not existing. Only use this externally when /// in edit mode. pub fn load_direct(path : path::PathBuf, read_only : bool) -> Result { let file_contents = fs::read_to_string(&path)?; let file = if read_only { fs::File::open(&path)? } else { fs::File::options() .write(true) .create(true) .open(&path)? }; let data = toml::from_str(&file_contents)?; Ok(Self { path, file, data, }) } /// The read_only flag is so that the file will not be truncated, and therefore doesn't need to /// be saved when finished. pub fn load(id : Id, vault_folder : &path::Path, read_only : bool) -> Result { let path = Task::check_exists(id, vault_folder)?; Task::load_direct(path, read_only) } pub fn load_all(vault_folder : &path::Path, read_only : bool) -> Result, error::Error> { let ids : Vec = fs::read_dir(vault_folder.join("notes")) .unwrap() .map(|entry| entry.unwrap().path()) .filter(|p| p.is_file()) .map(|p| p.file_stem().unwrap().to_str().unwrap().to_string()) .filter_map(|n| n.parse::().ok()) .collect(); let mut tasks = Vec::with_capacity(ids.len()); for id in ids { tasks.push(Task::load(id, vault_folder, read_only)?); } Ok(tasks) } pub fn path(&self) -> &path::Path { &self.path } pub fn check_exists(id : Id, vault_folder : &path::Path) -> Result { let path = vault_folder.join("notes").join(format!("{}.toml", id)); if path.exists() && path.is_file() { Ok(path) } else { Err(error::Error::Generic(format!("No task with the ID {} exists", colour::id(&id.to_string())))) } } pub fn save(self) -> Result<(), error::Error> { let Self { path : _, mut file, data, } = self; file.set_len(0)?; file.seek(io::SeekFrom::Start(0))?; file.write_all(toml::to_string(&data)?.as_bytes())?; Ok(()) } pub fn delete(self) -> Result<(), error::Error> { let Self { path, file, data : _, } = self; mem::drop(file); fs::remove_file(&path)?; Ok(()) } pub fn display(&self) -> Result<(), error::Error> { fn line(len : usize) { for _ in 0..len { print!("-"); } println!(); } let id = &self.data.id.to_string(); let discarded = if self.data.discarded { String::from(" (discarded)") } else { String::new() }; let heading = format!("[{}] {} {}{}", if self.data.complete {"X"} else {" "}, colour::id(id), colour::task_name(&self.data.name), colour::greyed_out(&discarded)); println!("{}", heading); line(5 + self.data.name.chars().count() + id.chars().count() + discarded.chars().count()); println!("Priority: {}", self.data.priority.coloured()); println!("Tags: [{}]", format_hash_set(&self.data.tags)?); println!("Created: {}", self.data.created); if let Some(mut info) = self.data.info.clone() { let mut max_line_width = 0; println!("Info:"); while info.ends_with('\n') { info.pop(); } let info_lines : Vec<&str> = info.split('\n').collect(); for line in info_lines { max_line_width = usize::max(max_line_width, line.chars().count() + 4); println!(" {}", line); } line(usize::min(max_line_width, usize::try_from(termsize::get().map(|s| s.cols).unwrap_or(0)).unwrap())); } else { // Need to work out appropriate line size. } // dependencies as a tree Ok(()) } } fn format_hash_set(set : &HashSet) -> Result { let mut output = String::new(); for value in set.iter() { fmt::write(&mut output, format_args!("{}, ", value))?; } // Remove the trailing comma and space. if !output.is_empty() { output.pop(); output.pop(); } Ok(output) } pub fn list(vault_folder : &path::Path) -> Result<(), error::Error> { let mut table = comfy_table::Table::new(); table .load_preset(comfy_table::presets::UTF8_FULL) .apply_modifier(comfy_table::modifiers::UTF8_ROUND_CORNERS) .set_content_arrangement(comfy_table::ContentArrangement::Dynamic); table.set_header(vec!["Id", "Name", "Tags", "Priority"]); let mut tasks = Task::load_all(vault_folder, true)?; tasks.sort_by(|t1, t2| t2.data.priority.cmp(&t1.data.priority)); for task in tasks { if !task.data.discarded && !task.data.complete { table.add_row( vec![ task.data.id.to_string(), task.data.name, format_hash_set(&task.data.tags)?, task.data.priority.to_string(), ] ); } } println!("{}", table); Ok(()) } pub fn clean(vault_folder : &path::Path) -> Result<(), error::Error> { let tasks = Task::load_all(vault_folder, false)?; for task in tasks { if task.data.discarded { task.delete()?; } } Ok(()) }