v0.1.2

.gitignore

@@ -17,3 +17,8 @@ Cargo.lock
 # Added by cargo
 
 /target
+
+
+# config file
+.rusty_task.json
+Notes/

Cargo.toml

@@ -1,10 +1,16 @@
 [package]
 name = "rusty-tasks"
-version = "0.1.0"
+version = "0.1.2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 chrono = "0.4.26"
+clap = { version = "4.5.1", features = ["derive"] }
+comrak = "0.18.0"
+figment = { version = "0.10.10", features = ["env", "serde_json", "json"] }
 regex = "1.8.4"
+serde = { version = "1.0.164", features = ["serde_derive"] }
+serde_json = "1.0.97"
+resolve-path = "0.1.0"

src/cli/mod.rs

@@ -0,0 +1,23 @@
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(version, about)]
+pub struct Args {
+    /// set config file to use
+    #[arg(short, long, value_name = "FILE")]
+    pub config: Option<String>,
+
+    /// show current config file
+    #[arg(short = 'C', long)]
+    pub current_config: bool,
+
+    /// view previous day's notes
+    #[arg(short = 'p', long, default_value_t = 0)]
+    pub previous: u16,
+    /// list closest files to date
+    #[arg(short, long)]
+    pub list: bool,
+    /// list closest files to date
+    #[arg(short = 'L', long)]
+    pub list_all: bool,
+}

src/config/mod.rs

@@ -0,0 +1,84 @@
+extern crate serde;
+extern crate serde_json;
+
+use figment::providers::{Env, Format, Json, Serialized};
+use figment::Figment;
+use serde::{Deserialize, Serialize};
+use std::env::var;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+#[derive(Deserialize, Serialize, Debug)]
+pub struct Config {
+    pub editor: String,
+    pub sections: Vec<String>,
+    pub notes_dir: String,
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Config {
+            editor: "nano".into(),
+            sections: vec!["Daily".into(), "Weekly".into(), "Monthly".into()],
+            notes_dir: "~/Notes".into(),
+        }
+    }
+}
+
+#[derive(Debug)]
+pub enum ConfigError {
+    IOError(&'static str),
+    ParseError(&'static str),
+    EnvError(&'static str),
+}
+
+impl Config {
+    pub fn load(cfg_file: &str) -> Result<Self, ConfigError> {
+        Figment::from(Serialized::defaults(Config::default()))
+            .merge(Env::raw().only(&["EDITOR"]))
+            .merge(Json::file(cfg_file))
+            .extract()
+            .or(Err(ConfigError::IOError("Could not load config")))
+    }
+
+    pub fn write_default(cfg_file: &str) -> Result<(), ConfigError> {
+        let buf = serde_json::to_string_pretty(&Self::default()).or_else(|_| {
+            Err(ConfigError::ParseError(
+                "could not serialize default config",
+            ))
+        })?;
+
+        let mut f = File::create(cfg_file)
+            .or_else(|_| Err(ConfigError::IOError("Could not open config file")))?;
+        f.write_all(&buf.as_bytes()).or_else(|_| {
+            Err(ConfigError::IOError(
+                "could not write default config to file",
+            ))
+        })?;
+
+        Ok(())
+    }
+
+    pub fn expected_locations() -> Result<Vec<PathBuf>, ConfigError> {
+        let cfg_name = "rusty_task.json";
+        let home = var("HOME").or(Err(ConfigError::EnvError(
+            "$HOME environment variable not set",
+        )))?;
+        let pwd = var("PWD").or(Err(ConfigError::EnvError(
+            "$PWD environment variable not set",
+        )))?;
+
+        let mut home_config_cfg = PathBuf::from(home.clone());
+        home_config_cfg.push(".config");
+        home_config_cfg.push(cfg_name);
+
+        let mut home_cfg = PathBuf::from(home.clone());
+        home_cfg.push(format!(".{}", cfg_name));
+
+        let mut pwd_cfg = PathBuf::from(pwd.clone());
+        pwd_cfg.push(format!(".{}", cfg_name));
+
+        Ok(vec![home_config_cfg, home_cfg, pwd_cfg])
+    }
+}

src/file/mod.rs

@@ -0,0 +1,113 @@
+use crate::todo::{File as TodoFile, Status as TaskStatus};
+use crate::NaiveDate;
+use crate::TaskGroup;
+use chrono::Datelike;
+use comrak::nodes::{AstNode, NodeValue};
+use comrak::parse_document;
+use comrak::{Arena, ComrakExtensionOptions, ComrakOptions, ComrakParseOptions};
+use std::collections::HashMap;
+use std::fs::{read, File};
+use std::io::Write;
+use std::path::PathBuf;
+use std::str;
+
+#[derive(Debug)]
+pub enum FileNameParseError {
+    TypeConversionError(&'static str),
+    ParseError(chrono::ParseError),
+}
+
+pub fn get_filepath(data_dir: &PathBuf, date: &NaiveDate) -> PathBuf {
+    let file_name = format!("{}-{:02}-{:02}.md", date.year(), date.month(), date.day());
+    let mut file_path = data_dir.clone();
+    file_path.push(file_name);
+    file_path
+}
+
+pub fn generate_file_content(data: &Vec<TaskGroup>, date: &NaiveDate) -> String {
+    let mut content = format!(
+        "# Today's tasks {}-{:02}-{:02}\n",
+        date.year(),
+        date.month(),
+        date.day()
+    );
+    data.iter()
+        .for_each(|task_group| content.push_str(format!("\n{}", task_group.to_string()).as_str()));
+
+    content
+}
+
+pub fn write_file(path: &PathBuf, content: &String) {
+    let mut new_file = File::create(&path).expect("Could not open today's file: {today_file_path}");
+    write!(new_file, "{}", content).expect("Could not write to file: {today_file_path}");
+}
+
+pub fn load_file(file: &TodoFile) -> String {
+    let contents_utf8 = read(file.file.clone())
+        .expect(format!("Could not read file {}", file.file.to_string_lossy()).as_str());
+    str::from_utf8(&contents_utf8)
+        .expect(
+            format!(
+                "failed to convert contents of file to string: {}",
+                file.file.to_string_lossy()
+            )
+            .as_str(),
+        )
+        .to_string()
+}
+
+pub fn parse_todo_file<'a>(contents: &String, arena: &'a Arena<AstNode<'a>>) -> &'a AstNode<'a> {
+    let options = &ComrakOptions {
+        extension: ComrakExtensionOptions {
+            tasklist: true,
+            ..ComrakExtensionOptions::default()
+        },
+        parse: ComrakParseOptions {
+            relaxed_tasklist_matching: true,
+            ..ComrakParseOptions::default()
+        },
+        ..ComrakOptions::default()
+    };
+    parse_document(arena, contents, options)
+}
+
+pub fn extract_secitons<'a>(
+    root: &'a AstNode<'a>,
+    sections: &Vec<String>,
+) -> HashMap<String, TaskGroup> {
+    let mut groups: HashMap<String, TaskGroup> = HashMap::new();
+    for node in root.reverse_children() {
+        let node_ref = &node.data.borrow();
+        if let NodeValue::Heading(heading) = node_ref.value {
+            if heading.level < 2 {
+                continue;
+            }
+
+            let first_child_ref = &node.first_child();
+            let first_child = if let Some(child) = first_child_ref {
+                child
+            } else {
+                continue;
+            };
+
+            let data_ref = &first_child.data.borrow();
+            let title = if let NodeValue::Text(value) = &data_ref.value {
+                value
+            } else {
+                continue;
+            };
+
+            if sections.iter().any(|section| section.eq(title)) {
+                if let Ok(mut group) = TaskGroup::try_from(node) {
+                    group.tasks = group
+                        .tasks
+                        .into_iter()
+                        .filter(|task| !matches!(task.status, TaskStatus::Done(_)))
+                        .collect();
+                    groups.insert(title.to_string(), group);
+                }
+            }
+        };
+    }
+    groups
+}

src/main.rs

@@ -1,127 +1,134 @@
-use chrono::naive::NaiveDate;
-use chrono::{Datelike, Local};
-use std::env;
-use std::fs;
-use std::path::{Path, PathBuf};
-use todo_file::TodoFile;
+mod cli;
+mod config;
+mod file;
+mod todo;
 
-//TODO handle unwraps and errors more uniformly
-//TODO move TodoFile into its file
+use crate::cli::Args;
+use crate::config::Config;
+use crate::todo::{File as TodoFile, TaskGroup};
+use chrono::naive::NaiveDate;
+use chrono::{Local, TimeDelta};
+use clap::Parser;
+use comrak::Arena;
+use resolve_path::PathResolveExt;
+use std::fs;
+use std::path::Path;
+use std::process::Command;
 
 fn main() {
-    let data_dir = get_data_dir("notes");
+    let args = Args::parse();
+    println!("{:?}", args);
 
-    println!("{}", data_dir.to_str().unwrap());
-    let latest_file = get_latest_file(&data_dir).unwrap();
-    //.expect(
-    //    format!(
-    //        "Could not find any notes files please use format: {}",
-    //        get_file_regex().to_string()
-    //    )
-    //    .as_str(),
-    //);
-    println!("Latest file: {:?}", latest_file);
-    let now = Local::now();
-    let today = NaiveDate::from_ymd_opt(now.year(), now.month(), now.day());
-    match today {
-        Some(today) if latest_file.date == today => println!("Todays file was created"),
-        Some(today) if latest_file.date < today => println!("Todays file was not created"),
-        Some(today) if latest_file.date > today => println!("Future files were created"),
-
-        _ => println!("Today never happend!"),
-    }
-}
-
-mod todo_file {
-    use chrono::naive::NaiveDate;
-    use std::convert::TryFrom;
-    use std::fs::DirEntry;
-    use std::str::FromStr;
-    use regex::Regex;
-
-    #[derive(Debug)]
-    pub struct TodoFile {
-        pub file: DirEntry,
-        pub date: NaiveDate,
-    }
-
-    impl TodoFile {
-        fn capture_as_number<T: FromStr>(
-            capture: &regex::Captures,
-            name: &str,
-        ) -> Result<T, String> {
-            Ok(capture
-                .name(name)
-                .unwrap()
-                .as_str()
-                .parse::<T>()
-                .ok()
-                .ok_or("Something went wrong".to_owned())?)
-        }
-
-        pub fn latest_file(a: TodoFile, b: TodoFile) -> TodoFile {
-            if a.date > b.date {
-                a
-            } else {
-                b
-            }
-        }
-
-        fn get_file_regex() -> Regex {
-            //TODO This would ideally be configurable 
-            Regex::new(r"(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2}).md")
-                .expect("could not create regex")
-        }
-    }
-
-    impl TryFrom<DirEntry> for TodoFile {
-        type Error = String;
-
-        fn try_from(direntry: DirEntry) -> Result<Self, Self::Error> {
-            let re = TodoFile::get_file_regex();
-            println!("{:?}", re);
-            let file_name = direntry.file_name();
-            let file_name_str = match file_name.to_str() {
-                Some(name) => name,
-                _ => "",
-            };
-            println!("{:?}", file_name_str);
-
-            if let Some(caps) = re.captures(file_name_str) {
-                let year: i32 = Self::capture_as_number(&caps, "year").unwrap();
-                let month: u32 = Self::capture_as_number(&caps, "month").unwrap();
-                let day: u32 = Self::capture_as_number(&caps, "day").unwrap();
-
-                return Ok(Self {
-                    file: direntry,
-                    date: NaiveDate::from_ymd_opt(year, month, day).unwrap(),
-                });
-            };
-            Err(format!(
-                "Could not parse file name => {{ name: {:?}, re: {:?} }}",
-                file_name, re
-            )
-            .to_string())
-        }
-    }
-}
-
-fn get_data_dir(dir_name: &str) -> PathBuf {
-    let mut dir = if let Ok(home) = env::var("HOME") {
-        let mut x = PathBuf::new();
-        x.push(home);
-        x
-    } else {
-        env::current_dir().expect("PWD environment variable not set")
+    let expected_cfg_files = match Config::expected_locations() {
+        Ok(cfg_files) => cfg_files,
+        Err(e) => panic!("{:?}", e),
     };
-    dir = dir.join(dir_name);
-    dir
-}
 
-fn get_latest_file(dir: &Path) -> Result<TodoFile, String> {
-    let dir = fs::read_dir(dir).expect(format!("Could not find notes folder: {:?}", dir).as_str());
-    dir.filter_map(|f| f.ok())
-        .filter_map(|file| TodoFile::try_from(file).ok())
-        .reduce(|a, b| TodoFile::latest_file(a, b))
-        .ok_or("Could not reduce items".to_string())
+    let cfg_files: Vec<&Path> = expected_cfg_files
+        .iter()
+        .map(|file| Path::new(file))
+        .filter(|file| file.exists())
+        .collect();
+
+    if cfg_files.len() <= 0 {
+        if let Err(e) = Config::write_default(match expected_cfg_files[0].to_str() {
+            Some(s) => s,
+            None => panic!("Could not resolve expected cfg file paths"),
+        }) {
+            panic!("Could not write config: {:?}", e);
+        }
+    }
+
+    let cfg_file = match args.config {
+        Some(file) => file,
+        None => match cfg_files.last() {
+            None => expected_cfg_files[0].to_string_lossy().to_string(),
+            Some(file) => file.to_string_lossy().to_string(),
+        },
+    };
+
+    if args.current_config {
+        println!("{}", &cfg_file);
+        return;
+    }
+
+    let cfg = match Config::load(&cfg_file) {
+        Ok(cfg) => cfg,
+        Err(_e) => panic!("could not load config: {}", cfg_file),
+    };
+
+    let data_dir = cfg.notes_dir.resolve().to_path_buf();
+
+    if !fs::metadata(&data_dir).is_ok() {
+        match fs::create_dir_all(&data_dir) {
+            Err(_e) => panic!("Could not create default directory: {:?}", &data_dir),
+            _ => (),
+        };
+    }
+
+    let files = fs::read_dir(&data_dir)
+        .expect(format!("Could not find notes folder: {:?}", &data_dir).as_str())
+        .filter_map(|f| f.ok())
+        .map(|file| file.path());
+    if args.list_all {
+        files
+            .into_iter()
+            .for_each(|f| println!("{}", f.canonicalize().unwrap().to_string_lossy()));
+        return ();
+    }
+
+    let today = Local::now().date_naive();
+    let target = today - TimeDelta::try_days(args.previous.into()).unwrap();
+    let closest_files = TodoFile::get_closest_files(files.collect(), target, 5);
+    if args.list {
+        closest_files
+            .into_iter()
+            .for_each(|f| println!("{}", f.file.canonicalize().unwrap().to_string_lossy()));
+        return ();
+    }
+
+    let latest_file = closest_files.first();
+    let current_file = match latest_file {
+        Some(todo_file) if todo_file.date < today && args.previous == 0 => {
+            let sections = &cfg.sections;
+            let arena = Arena::new();
+
+            let root = {
+                let contents = file::load_file(&todo_file);
+                let root = file::parse_todo_file(&contents, &arena);
+                root
+            };
+            let groups = file::extract_secitons(root, sections);
+            let level = groups.values().map(|group| group.level).min().unwrap_or(2);
+            let data = sections
+                .iter()
+                .map(|section| match groups.get(section) {
+                    Some(group) => group.clone(),
+                    None => TaskGroup::empty(section.to_string(), level),
+                })
+                .collect();
+
+            let content = file::generate_file_content(&data, &today);
+            let file_path = file::get_filepath(&data_dir, &today);
+            file::write_file(&file_path, &content);
+            file_path
+        }
+        Some(todo_file) => todo_file.file.clone(),
+        None => {
+            let sections = &cfg.sections;
+            let data = sections
+                .iter()
+                .map(|sec| TaskGroup::empty(sec.clone(), 2))
+                .collect();
+            let content = file::generate_file_content(&data, &today);
+            let file_path = file::get_filepath(&data_dir, &today);
+            file::write_file(&file_path, &content);
+            file_path
+        }
+    };
+
+    Command::new(&cfg.editor)
+        .args([current_file])
+        .status()
+        .expect(format!("failed to launch editor {}", &cfg.editor).as_str());
 }

src/todo/file.rs

@@ -0,0 +1,169 @@
+use chrono::naive::NaiveDate;
+use regex::Regex;
+use std::cmp::min;
+use std::convert::TryFrom;
+use std::fs::DirEntry;
+use std::path::PathBuf;
+use std::str::FromStr;
+
+use crate::file::FileNameParseError;
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct File {
+    pub file: PathBuf,
+    pub date: NaiveDate,
+}
+
+pub enum FileError {
+    //IOError(&'static str),
+    ParseError(&'static str),
+}
+
+impl File {
+    fn capture_as_number<T: FromStr>(capture: &regex::Captures, name: &str) -> Result<T, String> {
+        Ok(capture
+            .name(name)
+            .unwrap()
+            .as_str()
+            .parse::<T>()
+            .ok()
+            .ok_or("Something went wrong".to_owned())?)
+    }
+
+    fn get_file_regex() -> Regex {
+        //TODO This would ideally be configurable
+        Regex::new(r"(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2}).md")
+            .expect("could not create regex")
+    }
+}
+
+impl TryFrom<DirEntry> for File {
+    type Error = FileError;
+
+    fn try_from(direntry: DirEntry) -> Result<Self, Self::Error> {
+        let re = File::get_file_regex();
+        //        println!("{:?}", re);
+        let file_name = direntry.file_name();
+        let file_name_str = match file_name.to_str() {
+            Some(name) => name,
+            _ => "",
+        };
+        //        println!("{:?}", file_name_str);
+
+        if let Some(caps) = re.captures(file_name_str) {
+            let year: i32 = Self::capture_as_number(&caps, "year").unwrap();
+            let month: u32 = Self::capture_as_number(&caps, "month").unwrap();
+            let day: u32 = Self::capture_as_number(&caps, "day").unwrap();
+
+            return Ok(Self {
+                file: direntry.path(),
+                date: NaiveDate::from_ymd_opt(year, month, day).unwrap(),
+            });
+        };
+        Err(FileError::ParseError("Could not parse file name"))
+    }
+}
+
+fn try_get_date(file: &PathBuf) -> Result<NaiveDate, FileNameParseError> {
+    let file_name = file
+        .file_name()
+        .ok_or(FileNameParseError::TypeConversionError(
+            "Could not get filename from path: {:?}",
+        ))?
+        .to_str()
+        .ok_or(FileNameParseError::TypeConversionError(
+            "Could not get filename from path: {:?}",
+        ))?;
+
+    NaiveDate::parse_from_str(file_name, "%Y-%m-%d.md")
+        .or_else(|e| Err(FileNameParseError::ParseError(e)))
+}
+
+impl TryFrom<PathBuf> for File {
+    type Error = FileNameParseError;
+
+    fn try_from(path: PathBuf) -> Result<Self, Self::Error> {
+        Ok(Self {
+            date: try_get_date(&path)?,
+            file: path.into(),
+        })
+    }
+}
+impl File {
+    pub fn get_closest_files(files: Vec<PathBuf>, target: NaiveDate, n: usize) -> Vec<File> {
+        let mut dated_files = files
+            .into_iter()
+            .filter_map(|file| File::try_from(file).ok())
+            .collect::<Vec<_>>();
+        dated_files.sort_by_cached_key(|dated_file| (dated_file.date - target).num_days().abs());
+
+        let count = min(n, dated_files.len());
+        dated_files[..count].to_vec()
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use chrono::NaiveDate;
+    use std::path::PathBuf;
+
+    #[test]
+    fn test_get_closest_date() {
+        let files = vec![
+            PathBuf::from("./2024-01-01.md"),
+            PathBuf::from("./2024-01-02.md"),
+            PathBuf::from("./2024-01-03.md"),
+            PathBuf::from("./2024-02-01.md"),
+            PathBuf::from("./2024-03-01.md"),
+            PathBuf::from("./2024-04-01.md"),
+            PathBuf::from("./2024-04-02.md"),
+            PathBuf::from("./2024-04-03.md"),
+            PathBuf::from("./2024-04-04.md"),
+        ];
+
+        let res = File::get_closest_files(
+            files.clone(),
+            NaiveDate::from_ymd_opt(2023, 12, 30).unwrap(),
+            3,
+        );
+        let expected_res = vec![
+            File::try_from(PathBuf::from("./2024-01-01.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-01-02.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-01-03.md")).unwrap(),
+        ];
+        assert_eq!(res, expected_res);
+
+        let res = File::get_closest_files(
+            files.clone(),
+            NaiveDate::from_ymd_opt(2024, 2, 1).unwrap(),
+            3,
+        );
+        let expected_res = vec![
+            File::try_from(PathBuf::from("./2024-02-01.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-01-03.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-03-01.md")).unwrap(),
+        ];
+        assert_eq!(res, expected_res);
+
+        let res = File::get_closest_files(
+            files.clone(),
+            NaiveDate::from_ymd_opt(2024, 5, 2).unwrap(),
+            3,
+        );
+        let expected_res = vec![
+            File::try_from(PathBuf::from("./2024-04-04.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-04-03.md")).unwrap(),
+            File::try_from(PathBuf::from("./2024-04-02.md")).unwrap(),
+        ];
+        assert_eq!(res, expected_res);
+
+        let res = File::get_closest_files(
+            files[..1].to_vec(),
+            NaiveDate::from_ymd_opt(2023, 12, 30).unwrap(),
+            3,
+        );
+        let expected_res = vec![File::try_from(PathBuf::from("./2024-01-01.md")).unwrap()];
+        assert_eq!(res, expected_res);
+    }
+}

src/todo/mod.rs

@@ -0,0 +1,6 @@
+mod file;
+mod tasks;
+
+pub use file::File;
+pub use tasks::{Status, TaskGroup};
+

src/todo/tasks.rs

@@ -0,0 +1,202 @@
+use std::borrow::Borrow;
+
+use comrak::nodes::AstNode;
+use comrak::nodes::NodeValue;
+
+#[derive(Debug, Clone)]
+pub struct TaskGroup {
+    pub name: String,
+    pub tasks: Vec<Task>,
+    pub level: u8,
+}
+
+// This does not support subtasks, need to figure out best path forward
+#[derive(Debug, Clone)]
+pub struct Task {
+    pub status: Status,
+    pub text: String,
+    pub subtasks: Option<Vec<Task>>,
+}
+
+#[derive(Debug, PartialEq, Clone)]
+pub enum Status {
+    Done(char),
+    Todo(char),
+    Empty,
+}
+
+pub enum TaskError {
+    ParsingError(&'static str),
+}
+
+impl Task {
+    fn extract_text<'a>(node: &'a AstNode<'a>) -> Result<String, TaskError> {
+        let data_ref = node.data.borrow();
+        if let NodeValue::Text(contents) = &data_ref.value {
+            Ok(contents.to_string())
+        } else {
+            Err(TaskError::ParsingError("Could not get text from element"))
+        }
+    }
+
+    fn extract_text_from_task<'a>(node: &'a AstNode<'a>) -> Result<String, TaskError> {
+        let mut text = String::new();
+        let data_ref = node.data.borrow();
+        if let NodeValue::Paragraph = data_ref.value {
+            for child in node.children() {
+                let child_data_ref = child.data.borrow();
+                let t = match &child_data_ref.borrow().value {
+                    NodeValue::Text(contents) => contents.clone(),
+                    NodeValue::Emph if child.first_child().is_some() => {
+                        format!("*{}*", Self::extract_text(child.first_child().unwrap())?)
+                    }
+                    NodeValue::Strong if child.first_child().is_some() => {
+                        format!("**{}**", Self::extract_text(child.first_child().unwrap())?)
+                    }
+                    NodeValue::SoftBreak => {
+                        format!("\n{}", " ".repeat(data_ref.sourcepos.start.column))
+                    }
+                    _ => "".into(),
+                };
+                text.push_str(&t);
+            }
+            Ok(text)
+        } else {
+            Err(TaskError::ParsingError("First child is not Paragraph"))
+        }
+    }
+}
+
+impl ToString for Task {
+    fn to_string(&self) -> String {
+        let ch = match self.status {
+            Status::Done(ch) => ch,
+            Status::Todo(ch) => ch,
+            Status::Empty => ' ',
+        };
+
+        let subtasks = if let Some(subtasks) = &self.subtasks {
+            let text = subtasks
+                .iter()
+                .map(|task| task.to_string())
+                .collect::<Vec<_>>()
+                .join("\n");
+            format!("\n{}", text).trim_end().replace("\n",  "\n  ")
+        } else {
+            "".into()
+        };
+
+        format!("- [{}] {}{}\n", ch, self.text.trim(), subtasks)
+    }
+}
+
+impl<'a> TryFrom<&'a AstNode<'a>> for Task {
+    type Error = TaskError;
+    fn try_from(node: &'a AstNode<'a>) -> Result<Self, Self::Error> {
+        let data_ref = &node.data.borrow();
+        if let NodeValue::TaskItem(ch) = data_ref.value {
+            let text = Self::extract_text_from_task(
+                node.first_child()
+                    .ok_or(TaskError::ParsingError("No childern of node found"))?,
+            )?;
+            let status = match ch {
+                Some(c) if c == 'x' || c == 'X' => Status::Done(c),
+                Some(c) => Status::Todo(c),
+                _ => Status::Empty,
+            };
+            let subtasks = node
+                .children()
+                .filter_map(|child| {
+                    if let NodeValue::List(_) = child.data.borrow().value {
+                        Some(child)
+                    } else {
+                        None
+                    }
+                })
+                .map(|child| {
+                    child
+                        .children()
+                        .into_iter()
+                        .filter_map(|item_node| Task::try_from(item_node).ok())
+                        .collect()
+                })
+                .reduce(|a: Vec<Task>, b: Vec<Task>| [a, b].concat());
+
+            Ok(Self {
+                status,
+                text,
+                subtasks,
+            })
+        } else {
+            Err(TaskError::ParsingError(
+                "Node being parsed is not a TaskItem",
+            ))
+        }
+    }
+}
+
+impl TaskGroup {
+    pub fn empty(name: String, level: u8) -> TaskGroup {
+        TaskGroup {
+            name,
+            tasks: Vec::new(),
+            level,
+        }
+    }
+}
+impl ToString for TaskGroup {
+    fn to_string(&self) -> String {
+        let mut output = String::new();
+        output.push_str(format!("{} {}\n", "#".repeat(self.level.into()), self.name).as_str());
+        self.tasks
+            .iter()
+            .for_each(|task| output.push_str(task.to_string().as_str()));
+
+        output
+    }
+}
+
+impl<'a> TryFrom<&'a AstNode<'a>> for TaskGroup {
+    type Error = TaskError;
+    fn try_from(node: &'a AstNode<'a>) -> Result<Self, Self::Error> {
+        let node_ref = &node.data.borrow();
+        if let NodeValue::Heading(heading) = node_ref.value {
+            let level = heading.level;
+            let first_child_ref = &node.first_child();
+            let first_child = if let Some(child) = first_child_ref {
+                child
+            } else {
+                return Err(TaskError::ParsingError("Node has no children"));
+            };
+
+            let data_ref = &first_child.data.borrow();
+            let name = if let NodeValue::Text(value) = &data_ref.value {
+                value.to_string()
+            } else {
+                return Err(TaskError::ParsingError(
+                    "Could not get title from heading node",
+                ));
+            };
+
+            let next_sib = node
+                .next_sibling()
+                .ok_or(TaskError::ParsingError("Empty section at end of file"))?;
+
+            if let NodeValue::List(_list_meta) = next_sib.data.borrow().value {
+                let tasks = next_sib
+                    .children()
+                    .into_iter()
+                    .filter_map(|item_node| Task::try_from(item_node).ok())
+                    .collect();
+
+                Ok(TaskGroup { name, tasks, level })
+            } else {
+                Err(TaskError::ParsingError(
+                    "Next sibling of node is not a list",
+                ))
+            }
+        } else {
+            Err(TaskError::ParsingError("Node is not a section heading"))
+        }
+    }
+}