commit fbce0dc3f13f278a29afc9d8d6a8c2d906c6ba1a
Author: Niklas Kapelle <niklas@kapelle.org>
Date:   Wed Mar 27 17:31:09 2024 +0100

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
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diff --git a/Cargo.lock b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..614a639
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "sunrise"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+chrono = { version = "0.4.35", features = ["serde"] }
+clap = { version = "4.5.4", features = ["derive"] }
+serde = { version = "1.0", features = ["derive"] }
+toml = "0.8.12"
diff --git a/example.toml b/example.toml
new file mode 100644
index 0000000..369adf3
--- /dev/null
+++ b/example.toml
@@ -0,0 +1,11 @@
+[[schedule]]
+time = 17:35:00
+image =  "17:35:00"
+
+[[schedule]]
+time = 17:30:00
+image = "17:30:00"
+
+[[schedule]]
+time = 17:25:00
+image = "17:25:00"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..47fac5d
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,115 @@
+use chrono::{Local, Timelike};
+use clap::Parser;
+use serde::{de, Deserialize, Deserializer};
+use std::{
+    error::Error,
+    fs,
+    path::{Path, PathBuf},
+};
+use toml::value::Datetime;
+
+#[derive(Parser)]
+#[command(version, about, long_about = None)]
+struct Cli {
+    /// Sunrise file
+    file: PathBuf,
+}
+
+#[derive(Deserialize, Debug)]
+struct Sunrise {
+    /// Sorted array of Timetables
+    schedule: Vec<Timetable>,
+}
+
+#[derive(Deserialize, Debug)]
+struct Timetable {
+    /// Time of day in seconds from 0:00
+    #[serde(deserialize_with = "deserialize_seconds")]
+    time: u32,
+    image: PathBuf,
+}
+
+impl Sunrise {
+    fn load_from_file(path: &Path) -> Result<Sunrise, Box<dyn Error>> {
+        let file = fs::read_to_string(path)?;
+        let mut data: Sunrise = toml::from_str(&file)?;
+
+        data.schedule.sort_by_key(|e| e.time);
+
+        Ok(data)
+    }
+
+    fn closest_passed_time(&self, current: u32) -> Option<&Timetable> {
+        let idx = match self
+            .schedule
+            .binary_search_by_key(&current, |time| time.time)
+        {
+            Ok(idx) => idx,
+            Err(idx) => idx,
+        };
+
+        if idx > 0 {
+            return Some(&self.schedule[idx - 1]); // Return the time before the current time
+        } else if !self.schedule.is_empty() {
+            return self.schedule.last(); // Wrap around to the last time if current time is before the first time
+        } else {
+            return None; // Return None if the times array is empty
+        }
+    }
+}
+
+impl Timetable {
+    fn get_absolute_image_path(&self, config_path: &Path) -> PathBuf {
+        if self.image.is_absolute() {
+            return self.image.clone();
+        }
+
+        return config_path.join(&self.image);
+    }
+}
+
+fn deserialize_seconds<'de, D>(deserializer: D) -> Result<u32, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    let datetime: Datetime = Deserialize::deserialize(deserializer)?;
+
+    match datetime.time {
+        Some(time) => {
+            let h: u32 = time.hour.into();
+            let m: u32 = time.minute.into();
+            let s: u32 = time.second.into();
+
+            return Ok(h * 3600 + m * 60 + s);
+        }
+
+        None => return Err(de::Error::custom("Must include a time of day")),
+    }
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let cli = Cli::parse();
+
+    let sunrise = Sunrise::load_from_file(&cli.file)?;
+
+    let now = Local::now();
+    let sec = now.hour() * 3600 + now.minute() * 60 + now.second();
+
+    match sunrise.closest_passed_time(sec) {
+        Some(timetable) => match cli.file.canonicalize()?.parent() {
+            Some(sunrise_absolute_base) => {
+                let image = timetable.get_absolute_image_path(&sunrise_absolute_base);
+                println!("{}", image.to_str().unwrap());
+            }
+            None => {
+                println!("Failed");
+            }
+        },
+
+        None => {
+            println!("Failed");
+        }
+    }
+
+    Ok(())
+}