logrs 0.1.0

Record-keeping or diary tool.
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use config::Config;
use logger;
use logger::get_file_name;
use io::print_file;
use std::io::Write;

use std::io;
use std::process::Command;

extern crate chrono;
use self::chrono::*;

pub fn dispatch(entry: String, config: &Config) -> Result<(), io::Error> {
    match entry.as_ref() {
        // Display current file by default
        ""                           => dispatch_display(&"show".to_owned(), config),
        c if c.starts_with("show")   => dispatch_display(&entry, config),
        c if c.starts_with("search") => dispatch_search(&entry, config),
        c if c.starts_with("repl")   => dispatch_repl(config),
        _                            => logger::log(&entry, config),
    }
}

fn dispatch_repl(config: &Config) -> Result<(), io::Error> {
    let mut current_input: String;
    let mut output = io::stdout();
    let input = io::stdin();

    loop {
        current_input = String::new();
        print!("logrs >> ");
        let _ = output.flush();

        match input.read_line(&mut current_input) {
            Ok(_) => {}
            Err(e) => return Err(e),
        }

        match current_input {
            ref x if x.trim() == "quit" => break,
            ref x if x.trim() == "repl" => println!("I can't let you do that, Dave"),
            ref x => {
                match dispatch(x.trim().to_string(), config) {
                    Ok(_) => (),
                    Err(e) => return Err(e),
                }
            }
        }
    }

    Ok(())
}


fn dispatch_search(entry: &str, config: &Config) -> Result<(), io::Error> {
    let search_string: &str = &entry[6..];

    let output = Command::new("grep")
        .arg("-ri")
        .arg(search_string)
        .arg(&config.base_filepath)
        .output()
        .expect("grep failed to start for some reason");

    println!("{}", String::from_utf8_lossy(&output.stdout));
    Ok(())
}


fn dispatch_display(entry: &String, config: &Config) -> Result<(), io::Error> {
    let now = Local::now();
    let mut path = config.base_filepath.clone();

    if entry.starts_with("show today") || entry == &("show".to_owned()) {
        let file_name = get_file_name(now.date());
        path.push(&file_name);
        print_file(path)

    } else if entry.starts_with("show yesterday") {
        let yesterday = now.date() - Duration::days(1);
        let file_name = get_file_name(yesterday);
        path.push(&file_name);

        print_file(path)
    } else {
        // Cut of the "show" from the command
        let date = &entry[5..].trim();
        path.push(date);

        print_file(path)
    }
}