use anyhow::Result;
use serde::{Deserialize, Serialize};
use std::{cmp::Ordering, fmt::Write as _};
use term_painter::{
Attr::Bold,
Color::{Blue, BrightBlack, Yellow},
ToStyle,
};
use crate::{
params::units::{Precipitation, Temperature, Time, Units},
weather::Weather,
};
use super::{border::*, utils::style_number, weathercode::WeatherCode};
pub struct Graph {
temperatures: String,
graph: String,
precipitation: String,
}
#[derive(Default, Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Copy)]
#[allow(non_camel_case_types)]
pub enum GraphVariant {
#[default]
lines,
lines_shallow,
dots,
dots_double,
}
const DISPLAY_HOURS: [usize; 8] = [1, 3, 6, 9, 12, 15, 18, 21];
impl Graph {
pub fn render(self, width: usize, units: &Units, border_variant: &BorderVariant) {
BrightBlack.with(|| println!("{}", Separator::Blank.fmt(width, border_variant)));
let temperature_unit = match units.temperature {
Some(Temperature::fahrenheit) => "宅",
_ => "糖",
};
let precipitation_unit = match units.precipitation {
Some(Precipitation::inch) => "ⁱⁿ",
_ => "ₘₘ",
};
println!(
"{} {: <width$} {}",
BrightBlack.paint(Border::L.fmt(border_variant)),
Bold.paint("Hourly Forecast"),
BrightBlack.paint(Border::R.fmt(border_variant)),
width = width - 2
);
BrightBlack.with(|| {
println!(
"{}",
match border_variant {
BorderVariant::double => Separator::Double.fmt(width, border_variant),
BorderVariant::solid => Separator::Solid.fmt(width, border_variant),
_ => Separator::Dashed.fmt(width, border_variant),
}
)
});
Yellow.with(|| {
println!(
"{} {: <width$}{}{}",
BrightBlack.paint(Border::L.fmt(border_variant)),
Bold.paint(self.temperatures),
temperature_unit,
BrightBlack.paint(Border::R.fmt(border_variant)),
width = width - 3
);
BrightBlack.with(|| println!("{}", Separator::Blank.fmt(width, border_variant)));
println!(
"{}{}{}",
BrightBlack.paint(Border::L.fmt(border_variant)),
Bold.paint(self.graph),
BrightBlack.paint(Border::R.fmt(border_variant))
);
Blue.with(|| {
println!(
"{} {: <width$}{}{}",
BrightBlack.paint(Border::L.fmt(border_variant)),
Bold.paint(self.precipitation),
precipitation_unit,
BrightBlack.paint(Border::R.fmt(border_variant)),
width = width - 4
)
});
BrightBlack.with(|| {
println!(
"{}",
match border_variant {
BorderVariant::double => Separator::Double.fmt(width, border_variant),
BorderVariant::solid => Separator::Solid.fmt(width, border_variant),
_ => Separator::Dashed.fmt(width, border_variant),
}
)
});
});
let hours = match units.time {
Some(Time::am_pm) => ["¹²·⁰⁰ₐₘ", "³·⁰⁰ₐₘ", "⁶˙⁰⁰ₐₘ", "⁹˙⁰⁰ₐₘ", "¹²˙⁰⁰ₚₘ", "³˙⁰⁰ₚₘ", "⁶˙⁰⁰ₚₘ", "⁹˙⁰⁰ₚₘ"],
_ => ["⁰⁰˙⁰⁰", "⁰³˙⁰⁰", "⁰⁶˙⁰⁰", "⁰⁹˙⁰⁰", "¹²˙⁰⁰", "¹⁵˙⁰⁰", "¹⁸˙⁰⁰", "²¹˙⁰⁰"],
};
print!("{}", BrightBlack.paint(Border::L.fmt(border_variant)),);
for hour in hours {
print!("{: <9}", hour)
}
println!("{}", BrightBlack.paint(Border::R.fmt(border_variant)));
}
pub async fn prepare(weather: &Weather, night: bool, graph_variant: &GraphVariant, lang: &str) -> Result<Self> {
let temperatures = Self::prepare_temperature(weather, night, lang).await?;
let precipitation = Self::prepare_precipitation(&weather.hourly.precipitation[..=24])?;
let graph = Self::prepare_graph(&weather.hourly.temperature_2m[..=24], graph_variant)?;
Ok(Graph { temperatures, graph, precipitation })
}
async fn prepare_temperature(weather: &Weather, night: bool, lang: &str) -> Result<String> {
let mut result = String::new();
for hour in DISPLAY_HOURS {
let temp = weather.hourly.temperature_2m[hour].round() as i32;
let temp_sub = style_number(temp, true)?;
let wmo_code = WeatherCode::resolve(&weather.hourly.weathercode[hour], Some(night), lang).await?;
let length = if hour == 1 { 1 } else { 8 };
let _ = write!(result, "{: >length$}{}", temp_sub, wmo_code.icon);
}
Ok(result)
}
fn prepare_precipitation(precipitation: &[f64]) -> Result<String> {
let mut result = String::new();
for hour in DISPLAY_HOURS {
let prec = precipitation[hour].ceil() as i32;
let precipitation_sup = style_number(prec, true)?;
let length = if hour == 1 { 2 } else { 8 };
let _ = write!(result, "{: >length$} ", precipitation_sup);
}
Ok(result)
}
fn prepare_graph(temperatures: &[f64], graph_variant: &GraphVariant) -> Result<String> {
let min_temp = temperatures.iter().fold(f64::INFINITY, |a, &b| a.min(b));
let max_temp = temperatures.iter().copied().fold(f64::NEG_INFINITY, f64::max);
let graph_levels = match graph_variant {
GraphVariant::lines => ['🭻', '🭺', '🭹', '🭸', '🭷', '🭶', '▔'].to_vec(),
GraphVariant::lines_shallow => ['⎽', '⎼', '⎻', '⎺'].to_vec(),
GraphVariant::dots => ['⡀', '⠄', '⠂', '⠁'].to_vec(),
GraphVariant::dots_double => ['⣀', '⠤', '⠒', '⠉'].to_vec(),
};
let level_margin = (max_temp - min_temp) / (graph_levels.len() - 1) as f64;
let mut last_level = None;
let mut graph = String::new();
for (i, temp) in temperatures.iter().enumerate() {
let current_level = ((temp - min_temp) / level_margin) as usize;
if let Some(last_level) = last_level {
match current_level.cmp(&last_level) {
Ordering::Greater => graph.push(graph_levels[current_level + 1]),
Ordering::Less => graph.push(graph_levels[current_level - 1]),
Ordering::Equal => graph.push(graph_levels[current_level]),
}
} else {
graph.push(graph_levels[current_level])
}
graph.push(graph_levels[current_level]);
let next_level = ((temperatures[i + 1] - min_temp) / level_margin) as usize;
match current_level.cmp(&next_level) {
Ordering::Greater => graph.push(graph_levels[current_level - 1]),
Ordering::Less => graph.push(graph_levels[current_level + 1]),
Ordering::Equal => graph.push(graph_levels[current_level]),
}
if i == 23 {
break;
}
last_level = Some(next_level);
}
Ok(graph)
}
}