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use std::f64;
use std::fs::File;
use std::io::prelude::*;
use cursive::direction::{Absolute, Direction};
use cursive::event::{Event, EventResult, Key};
use cursive::view::View;
use cursive::{Printer, Vec2};
use chrono::NaiveDate;
use crate::habit::{Bit, Count, Habit, HabitWrapper};
use crate::CONFIGURATION;
use serde::{Deserialize, Serialize};
#[derive(PartialEq, Serialize, Deserialize)]
pub enum ViewMode {
Day,
Month,
Year,
}
impl std::default::Default for ViewMode {
fn default() -> Self {
ViewMode::Month
}
}
#[derive(Serialize, Deserialize)]
pub struct App {
habits: Vec<Box<dyn HabitWrapper>>,
#[serde(skip)]
focus: usize,
#[serde(skip)]
view_mode: ViewMode,
}
impl App {
pub fn new() -> Self {
return App {
habits: vec![],
view_mode: ViewMode::Day,
focus: 0,
};
}
pub fn add_habit(&mut self, h: Box<dyn HabitWrapper>) {
self.habits.push(h);
}
pub fn set_mode(&mut self, set_mode: ViewMode) {
if set_mode != self.view_mode {
self.view_mode = set_mode;
}
}
fn set_focus(&mut self, d: Absolute) {
let grid_width = CONFIGURATION.grid_width;
match d {
Absolute::Right => {
if self.focus != self.habits.len() - 1 {
self.focus += 1;
}
}
Absolute::Left => {
if self.focus != 0 {
self.focus -= 1;
}
}
Absolute::Down => {
if self.focus + grid_width < self.habits.len() - 1 {
self.focus += grid_width;
} else {
self.focus = self.habits.len() - 1;
}
}
Absolute::Up => {
if self.focus as isize - grid_width as isize >= 0 {
self.focus -= grid_width;
} else {
self.focus = 0;
}
}
Absolute::None => {}
}
}
fn status(&self) -> String {
let today = chrono::Local::now().naive_utc().date();
let remaining = self.habits.iter().map(|h| h.remaining(today)).sum::<u32>();
let total = self.habits.iter().map(|h| h.total()).sum::<u32>();
let completed = total - remaining;
return format!("{} completed, {} remaining", completed, remaining);
}
fn max_size(&self) -> Vec2 {
let grid_width = CONFIGURATION.grid_width;
let width = {
if self.habits.len() > 0 {
grid_width * CONFIGURATION.view_width
} else {
0
}
};
let height = {
if self.habits.len() > 0 {
(CONFIGURATION.view_height as f64
* (self.habits.len() as f64 / grid_width as f64).ceil())
as usize
} else {
0
}
};
Vec2::new(width, height)
}
pub fn load_state() -> Self {
let mut file = File::open("foo.txt").unwrap();
let mut j = String::new();
file.read_to_string(&mut j);
return serde_json::from_str(&j).unwrap();
}
// this function does IO
// TODO: convert this into non-blocking async function
fn save_state(&self) {
let j = serde_json::to_string_pretty(&self).unwrap();
let mut file = File::create("foo.txt").unwrap();
file.write_all(j.as_bytes()).unwrap();
}
}
impl View for App {
fn draw(&self, printer: &Printer) {
let grid_width = CONFIGURATION.grid_width;
let mut offset = Vec2::zero();
for (idx, i) in self.habits.iter().enumerate() {
if idx >= grid_width && idx % grid_width == 0 {
offset = offset.map_y(|y| y + CONFIGURATION.view_height).map_x(|_| 0);
}
i.draw(&printer.offset(offset).focused(self.focus == idx));
offset = offset.map_x(|x| x + CONFIGURATION.view_width);
}
offset = offset.map_x(|_| 0).map_y(|_| self.max_size().y - 1);
printer.print(offset, &self.status());
}
fn required_size(&mut self, _: Vec2) -> Vec2 {
let grid_width = CONFIGURATION.grid_width;
let width = {
if self.habits.len() > 0 {
grid_width * CONFIGURATION.view_width
} else {
0
}
};
let height = {
if self.habits.len() > 0 {
(CONFIGURATION.view_height as f64
* (self.habits.len() as f64 / grid_width as f64).ceil())
as usize
} else {
0
}
};
Vec2::new(width, height)
}
fn take_focus(&mut self, _: Direction) -> bool {
false
}
fn on_event(&mut self, e: Event) -> EventResult {
match e {
Event::Key(Key::Right) | Event::Key(Key::Tab) | Event::Char('l') => {
self.set_focus(Absolute::Right);
return EventResult::Consumed(None);
}
Event::Key(Key::Left) | Event::Shift(Key::Tab) | Event::Char('h') => {
self.set_focus(Absolute::Left);
return EventResult::Consumed(None);
}
Event::Key(Key::Up) | Event::Char('k') => {
self.set_focus(Absolute::Up);
return EventResult::Consumed(None);
}
Event::Key(Key::Down) | Event::Char('j') => {
self.set_focus(Absolute::Down);
return EventResult::Consumed(None);
}
Event::Char('a') => {
let mut gymming = Count::new("gym", 5);
gymming.insert_entry(NaiveDate::from_ymd(2020, 4, 11), 7);
gymming.insert_entry(NaiveDate::from_ymd(2020, 4, 12), 8);
gymming.insert_entry(NaiveDate::from_ymd(2020, 4, 13), 9);
gymming.insert_entry(NaiveDate::from_ymd(2020, 4, 14), 10);
gymming.insert_entry(NaiveDate::from_ymd(2020, 4, 15), 11);
self.add_habit(Box::new(gymming));
return EventResult::Consumed(None);
}
Event::Char('d') => {
self.habits.remove(self.focus);
return EventResult::Consumed(None);
}
Event::Char('w') => {
let j = serde_json::to_string_pretty(&self).unwrap();
let mut file = File::create("foo.txt").unwrap();
file.write_all(j.as_bytes()).unwrap();
return EventResult::Consumed(None);
}
Event::Char('q') => {
self.save_state();
return EventResult::with_cb(|s| s.quit());
}
_ => self.habits[self.focus].on_event(e),
}
}
}
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