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extern crate chrono;
use chrono::prelude::{DateTime, Local};
use chrono::Duration;
use std::ffi::OsStr;
use std::fmt;
use std::fs;
use std::io;
#[derive(Debug, Eq, Ord, PartialEq, PartialOrd)]
pub struct ProjectFile {
pub created_datetime: DateTime<Local>,
pub modified_datetime: DateTime<Local>,
pub time_spent: Duration,
pub name: String,
}
impl fmt::Display for ProjectFile {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{: <21} {: <13} {}",
self.created_datetime.format("%a %b %e %T"),
format_duration(self.time_spent),
self.name,
)
}
}
fn initialize_project_files(directory: String, project_file_suffix: String) -> Result<Vec<ProjectFile>, io::Error> {
let mut project_files: Vec<ProjectFile> = Vec::new();
for entry in fs::read_dir(directory)? {
let entry = entry?;
let path = entry.path();
let is_file = path.is_file();
let is_valid_filetype = str::ends_with(path.to_str().unwrap(), &project_file_suffix);
if is_file && is_valid_filetype {
let project_file = ProjectFile {
created_datetime: DateTime::<Local>::from(entry.metadata()?.created()?),
modified_datetime: DateTime::<Local>::from(entry.metadata()?.modified()?),
time_spent: Duration::zero(),
name: path.file_name().and_then(OsStr::to_str).unwrap().to_string(),
};
project_files.push(project_file);
}
}
project_files.sort();
Ok(project_files)
}
fn calculate_time_spent(project_files: &mut Vec<ProjectFile>, max_time_between_saves: Duration) {
for i in 0..project_files.len() {
let time_spent_single_file = project_files[i].modified_datetime - project_files[i].created_datetime;
if time_spent_single_file < max_time_between_saves {
project_files[i].time_spent = time_spent_single_file
}
if i < project_files.len() - 1 {
let time_spent_before_next_version =
project_files[i + 1].created_datetime - project_files[i].created_datetime;
if time_spent_before_next_version < max_time_between_saves {
project_files[i].time_spent = time_spent_before_next_version
}
}
}
}
fn format_duration(original_duration: Duration) -> String {
let mut duration = original_duration;
let hours = duration.num_hours();
duration = duration - Duration::hours(hours);
let minutes = duration.num_minutes();
duration = duration - Duration::minutes(minutes);
let seconds = duration.num_seconds();
duration = duration - Duration::seconds(seconds);
let milliseconds = duration.num_milliseconds();
format!("{}:{:02}:{:02}.{:03}", hours, minutes, seconds, milliseconds)
}
pub fn scan_project_files(
directory: String,
project_file_suffix: String,
max_minutes_between_saves: i64,
) -> Result<Vec<ProjectFile>, io::Error> {
let mut project_files: Vec<ProjectFile> = initialize_project_files(directory, project_file_suffix)?;
let max_time_between_saves: Duration = if max_minutes_between_saves > 0 {
Duration::minutes(max_minutes_between_saves)
} else {
Duration::max_value()
};
calculate_time_spent(&mut project_files, max_time_between_saves);
Ok(project_files)
}
pub fn print_project_summary(project_files: Vec<ProjectFile>) {
if project_files.is_empty() {
println!("No project files found");
return;
}
println!("{: <21} {: <13} Name", "Start time", "Duration");
let mut elapsed: Duration = Duration::zero();
for project_file in project_files {
println!("{}", project_file);
elapsed = elapsed + project_file.time_spent;
}
println!("\nTotal project time\n{}", format_duration(elapsed));
}
#[cfg(test)]
mod lib_tests {
use super::*;
#[test]
fn test_format_duration() {
assert_eq!("3:25:45.000", format_duration(Duration::seconds(12345)));
assert_eq!("0:05:21.000", format_duration(Duration::seconds(321)));
assert_eq!("0:00:00.522", format_duration(Duration::milliseconds(522)));
}
#[test]
fn test_calculate_time_spent() {
let mut project_files: Vec<ProjectFile> = Vec::new();
let created_datetime_a = Local::now();
let modified_datetime_a = created_datetime_a + Duration::seconds(1);
let project_file_a = ProjectFile {
created_datetime: created_datetime_a,
modified_datetime: modified_datetime_a,
time_spent: Duration::zero(),
name: String::from("abletime 0.1.0.als"),
};
project_files.push(project_file_a);
calculate_time_spent(&mut project_files, Duration::max_value());
assert_eq!(project_files[0].time_spent, modified_datetime_a - created_datetime_a);
let created_datetime_b = Local::now();
let modified_datetime_b = created_datetime_b + Duration::seconds(1);
let project_file_b = ProjectFile {
created_datetime: created_datetime_b,
modified_datetime: modified_datetime_b,
time_spent: Duration::zero(),
name: String::from("abletime 0.1.1.als"),
};
project_files.push(project_file_b);
calculate_time_spent(&mut project_files, Duration::max_value());
assert_eq!(project_files[0].time_spent, created_datetime_b - created_datetime_a);
assert_eq!(project_files[1].time_spent, modified_datetime_b - created_datetime_b);
}
}