refactor(bar): move widgets to new folder

This commit moves all the widgets to a new folder in order to organize
the code while hoping to make it easier to find and add a widget.

komorebi-bar/src/widgets/date.rs

@@ -0,0 +1,240 @@
+use crate::config::LabelPrefix;
+use crate::render::RenderConfig;
+use crate::selected_frame::SelectableFrame;
+use crate::widgets::widget::BarWidget;
+use chrono::Local;
+use chrono_tz::Tz;
+use eframe::egui::text::LayoutJob;
+use eframe::egui::Align;
+use eframe::egui::Context;
+use eframe::egui::Label;
+use eframe::egui::TextFormat;
+use eframe::egui::Ui;
+use eframe::egui::WidgetText;
+use serde::Deserialize;
+use serde::Serialize;
+use std::time::Duration;
+use std::time::Instant;
+
+/// Custom format with additive modifiers for integer format specifiers
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub struct CustomModifiers {
+    /// Custom format (https://docs.rs/chrono/latest/chrono/format/strftime/index.html)
+    format: String,
+    /// Additive modifiers for integer format specifiers (e.g. { "%U": 1 } to increment the zero-indexed week number by 1)
+    modifiers: std::collections::HashMap<String, i32>,
+}
+
+impl CustomModifiers {
+    fn apply(&self, output: &str) -> String {
+        let int_formatters = vec![
+            "%Y", "%C", "%y", "%m", "%d", "%e", "%w", "%u", "%U", "%W", "%G", "%g", "%V", "%j",
+            "%H", "%k", "%I", "%l", "%M", "%S", "%f",
+        ];
+
+        let mut modified_output = output.to_string();
+
+        for (modifier, value) in &self.modifiers {
+            // check if formatter is integer type
+            if !int_formatters.contains(&modifier.as_str()) {
+                continue;
+            }
+
+            // get the strftime value of modifier
+            let formatted_modifier = Local::now().format(modifier).to_string();
+
+            // find the gotten value in the original output
+            if let Some(pos) = modified_output.find(&formatted_modifier) {
+                let start = pos;
+                let end = start + formatted_modifier.len();
+                // replace that value with the modified value
+                if let Ok(num) = formatted_modifier.parse::<i32>() {
+                    modified_output.replace_range(start..end, &(num + value).to_string());
+                }
+            }
+        }
+
+        modified_output
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub struct DateConfig {
+    /// Enable the Date widget
+    pub enable: bool,
+    /// Set the Date format
+    pub format: DateFormat,
+    /// Display label prefix
+    pub label_prefix: Option<LabelPrefix>,
+    /// TimeZone (https://docs.rs/chrono-tz/latest/chrono_tz/enum.Tz.html)
+    ///
+    /// Use a custom format to display additional information, i.e.:
+    /// ```json
+    /// {
+    ///     "Date": {
+    ///         "enable": true,
+    ///         "format": { "Custom": "%D %Z (Tokyo)" },
+    ///         "timezone": "Asia/Tokyo"
+    ///      }
+    ///}
+    /// ```
+    pub timezone: Option<String>,
+}
+
+impl From<DateConfig> for Date {
+    fn from(value: DateConfig) -> Self {
+        let data_refresh_interval = 1;
+
+        Self {
+            enable: value.enable,
+            format: value.format,
+            label_prefix: value.label_prefix.unwrap_or(LabelPrefix::Icon),
+            timezone: value.timezone,
+            data_refresh_interval,
+            last_state: String::new(),
+            last_updated: Instant::now()
+                .checked_sub(Duration::from_secs(data_refresh_interval))
+                .unwrap(),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub enum DateFormat {
+    /// Month/Date/Year format (09/08/24)
+    MonthDateYear,
+    /// Year-Month-Date format (2024-09-08)
+    YearMonthDate,
+    /// Date-Month-Year format (8-Sep-2024)
+    DateMonthYear,
+    /// Day Date Month Year format (8 September 2024)
+    DayDateMonthYear,
+    /// Custom format (https://docs.rs/chrono/latest/chrono/format/strftime/index.html)
+    Custom(String),
+    /// Custom format with modifiers
+    CustomModifiers(CustomModifiers),
+}
+
+impl DateFormat {
+    pub fn next(&mut self) {
+        match self {
+            DateFormat::MonthDateYear => *self = Self::YearMonthDate,
+            DateFormat::YearMonthDate => *self = Self::DateMonthYear,
+            DateFormat::DateMonthYear => *self = Self::DayDateMonthYear,
+            DateFormat::DayDateMonthYear => *self = Self::MonthDateYear,
+            _ => {}
+        };
+    }
+
+    pub fn fmt_string(&self) -> String {
+        match self {
+            DateFormat::MonthDateYear => String::from("%D"),
+            DateFormat::YearMonthDate => String::from("%F"),
+            DateFormat::DateMonthYear => String::from("%v"),
+            DateFormat::DayDateMonthYear => String::from("%A %e %B %Y"),
+            DateFormat::Custom(custom) => custom.to_string(),
+            DateFormat::CustomModifiers(custom) => custom.format.clone(),
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct Date {
+    pub enable: bool,
+    pub format: DateFormat,
+    label_prefix: LabelPrefix,
+    timezone: Option<String>,
+    data_refresh_interval: u64,
+    last_state: String,
+    last_updated: Instant,
+}
+
+impl Date {
+    fn output(&mut self) -> String {
+        let mut output = self.last_state.clone();
+        let now = Instant::now();
+
+        if now.duration_since(self.last_updated) > Duration::from_secs(self.data_refresh_interval) {
+            let formatted = match &self.timezone {
+                Some(timezone) => match timezone.parse::<Tz>() {
+                    Ok(tz) => Local::now()
+                        .with_timezone(&tz)
+                        .format(&self.format.fmt_string())
+                        .to_string()
+                        .trim()
+                        .to_string(),
+                    Err(_) => format!("Invalid timezone: {}", timezone),
+                },
+                None => Local::now()
+                    .format(&self.format.fmt_string())
+                    .to_string()
+                    .trim()
+                    .to_string(),
+            };
+
+            // if custom modifiers are used, apply them
+            output = match &self.format {
+                DateFormat::CustomModifiers(custom) => custom.apply(&formatted),
+                _ => formatted,
+            };
+
+            self.last_state.clone_from(&output);
+            self.last_updated = now;
+        }
+
+        output
+    }
+}
+
+impl BarWidget for Date {
+    fn render(&mut self, ctx: &Context, ui: &mut Ui, config: &mut RenderConfig) {
+        if self.enable {
+            let mut output = self.output();
+            if !output.is_empty() {
+                let mut layout_job = LayoutJob::simple(
+                    match self.label_prefix {
+                        LabelPrefix::Icon | LabelPrefix::IconAndText => {
+                            egui_phosphor::regular::CALENDAR_DOTS.to_string()
+                        }
+                        LabelPrefix::None | LabelPrefix::Text => String::new(),
+                    },
+                    config.icon_font_id.clone(),
+                    ctx.style().visuals.selection.stroke.color,
+                    100.0,
+                );
+
+                if let LabelPrefix::Text | LabelPrefix::IconAndText = self.label_prefix {
+                    output.insert_str(0, "DATE: ");
+                }
+
+                layout_job.append(
+                    &output,
+                    10.0,
+                    TextFormat {
+                        font_id: config.text_font_id.clone(),
+                        color: ctx.style().visuals.text_color(),
+                        valign: Align::Center,
+                        ..Default::default()
+                    },
+                );
+
+                config.apply_on_widget(false, ui, |ui| {
+                    if SelectableFrame::new(false)
+                        .show(ui, |ui| {
+                            ui.add(
+                                Label::new(WidgetText::LayoutJob(layout_job.clone()))
+                                    .selectable(false),
+                            )
+                        })
+                        .clicked()
+                    {
+                        self.format.next()
+                    }
+                });
+            }
+        }
+    }
+}