use std::io;

use clap::{ArgMatches, Error};

use crate::request::RequestType;

pub enum ErrorKind {
    BadRequest,
    ForbiddenRequest,
    NotFound,
    UnprocessiableRequest,
}

// TODO: Can't get this function to properly work
// Currently, I'm grabbing input and have the server tell me whether or
// not input was validated. What I want to have happen is if there's
// a failure in input validation, I want the program to tell right away
// not have the server tell me when I'm doen inputting values
/// Function to get input from the user. It successfully grabs input but there's
/// no input validation as the server handles that.
pub fn get_input(question: String) -> String {
    let result: String;
    loop {
        let mut input = String::new();
        println!("{}", &question);
        io::stdin().read_line(&mut input).unwrap();

        match input.len() {
            0 => println!("{}", "Sorry, that wasn't valid input. Please try again.\n"),
            _ => {
                result = input.trim().to_string();
                break;
            }
        }
    }
    result
}

/// When you get a bad response from your Gitea server (any HTTP response that has
/// a status code not 2xx), and given the kind of response a user receives, the
/// appropriate message should be returned
pub fn bad_response_message(message: &String, error_kind: ErrorKind) -> String {
    let final_message: String;
    match error_kind {
        ErrorKind::BadRequest => {
            final_message = format!(
                "Client error - please try again!\nError message: {}",
                message
            );
        }
        ErrorKind::ForbiddenRequest => {
            final_message = format!(
                "Client error - unauthorized. Please try again!\nError message: {}",
                message
            );
        }
        ErrorKind::NotFound => {
            final_message = format!("Client error - not found!\nError message: {}", message);
        }
        ErrorKind::UnprocessiableRequest => {
            final_message = format!("Client error - the request can't be processed. Please try again!\nError message: {}", message);
        }
    }

    String::from(final_message)
}

/// Based on a subcommand that is passed, return the appropriate request
/// type
pub fn get_request_type(args: &ArgMatches) -> Result<RequestType, clap::Error> {
    let request_type: &str = args.subcommand().0;
    match request_type {
        "repo" => Ok(RequestType::Repository),
        "issue" => Ok(RequestType::Issue),
        "pr" => Ok(RequestType::PullRequest),
        "user" => Ok(RequestType::User),
        _ => Err(clap::Error::with_description(
            "Unknown or invalid command",
            clap::ErrorKind::InvalidSubcommand,
        )),
    }
}