GeosCoin 0.1.1

A fun game where you guess what number the computer has chosen.
Documentation 
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//! # My Crate
//!
//! `my_crate` is a collection of utilities to make performing certain
//! calculations more convenient.
//! 
use std::fs;
use std::error::Error;
use std::env;

pub struct Config {
    pub query: String,
    pub file_path: String,
    pub ignore_case: bool,
}

impl Config {
    pub fn build(mut args: impl Iterator<Item=String>) -> Result<Config, &'static str> {
        args.next();
        
        let query = match args.next() {
            Some(val) => val,
            None => panic!("dd")
        };
        let file_path = match args.next() {
            Some(val) => val,
            None => panic!("yy")
        };

        let ignore_case = env::var("IGNORE_CASE").is_ok();

        Ok(Config {query, file_path, ignore_case})
    }
}

pub fn run(cfg : &Config) -> Result<(), Box<dyn Error>>{
    
    let contents = fs::read_to_string(cfg.file_path.clone())?;

    let results: Vec<&str> = if cfg.ignore_case {
        search_case_insensitive(&cfg.query, &contents)
    } else {
        search(&cfg.query, &contents)
    };

    if results.len() > 0 {
        for line in results {
            println!("{line}");
        }
    }

    Ok(())
}

pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str>{
    contents
        .lines()
        .filter(|line|line.contains(query))
        .collect()
    
}

/// Search with case insensitive 
/// 
/// #Example
/// 
/// ```
/// use minigrep::search_case_insensitive;
/// 
/// let query = "1";
/// let contents = "1 2";
/// 
/// let find_line = search_case_insensitive(query, contents);
/// ``` 
/// 
/// #Panics
/// 
/// 
pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str>{
    contents
        .lines()
        .filter(|line| line.to_lowercase().contains(&query.to_lowercase()))
        .collect()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    #[ignore = "reason"]
    fn case_sensitive(){
        let query = "Duct";
        let contents = "\
        Rust: 
safe, fast, productive
        Pick three.";

        let vec: Vec<&str> = search(query, contents);
        println!("{:?}", vec);
        assert_eq!(vec!["safe, fast, productive"], vec);

    }

    #[test]
    fn case_insensitive() {
        let query = "rUsT";
        let contents = "\
Rust:
safe, fast, productive
Pick three.
Trust me.";

        let vec: Vec<&str> = search_case_insensitive(query, contents);
        println!("{:?}", vec);
        assert_eq!(
            vec!["Rust:", "Trust me."], 
            vec);

    }
}