Autocomplete in Rust

index.rs

use std::io;

#[derive(Debug)]
struct AutoCompleteRequest {
    value: String
}

#[derive(Debug)]
struct AutoCompleteResponse {
    suggestions: Vec<String>
}

fn get_autocomplete(request: AutoCompleteRequest, services: Vec<String>) -> AutoCompleteResponse {
    let mut vec = Vec::new();
    let request_len = request.value.len();

  for service in &services {
        println!("{}", service);
        println!("{}", request.value);

        if service.to_lowercase()[0..request_len -1] == request.value.to_lowercase().trim().to_string() {
            vec.push(service.clone().to_string());
        }
    }

    AutoCompleteResponse {
        suggestions: vec
    }
}

fn main() {
    println!("Autocomplete For Rust!");

    println!("\nPlease input your starting string\n");

    let mut input = String::new();

    io::stdin()
    .read_line(&mut input)
    .expect("Failed to read line");
    
    println!("\nI am looking for services that match {}", input);
 
    let response = get_autocomplete(AutoCompleteRequest{ value: input }, vec!["Slack".to_string(), "Salesforce".to_string()]);
    
    println!("\nResponse is {:#?}", response);
}

output.txt

Autocomplete For Rust!

Please input your starting string

sl

I am looking for services that match sl

Slack
sl

Salesforce
sl


Response is AutoCompleteResponse {
    suggestions: [
        "Slack",
    ],
}