use reqwest::{multipart, StatusCode};

#[derive(Debug)]
pub enum Error {
  ReqwestError(reqwest::Error),
  FailureStatus(reqwest::StatusCode)
}

impl From<reqwest::Error> for Error {
  fn from(value: reqwest::Error) -> Self {
    Self::ReqwestError(value)
  }
}

#[derive(Copy, Clone)]
pub enum Visibility {
  Public,
  Unlisted,
  Private,
  Direct
}

impl Visibility {
  pub fn enum_name(&self) -> &'static str {
    match self {
      Self::Public => "public",
      Self::Unlisted => "unlisted",
      Self::Private => "private",
      Self::Direct => "direct",
    }
  }
}

#[derive(Clone)]
pub struct Mastodon {
  instance: String,
  token: String
}

impl Mastodon {
  pub fn new(instance: String, token: String) -> Self {
    Mastodon { instance, token }
  }

  pub async fn post_text_status(&self, status: String, visibility: Visibility) -> Result<(), Error> {
    let form = multipart::Form::new()
      .text("status", status)
      .text("visibility", visibility.enum_name());
    let client = reqwest::Client::new();
    let response = client
      .post(format!("{}/api/v1/statuses", self.instance))
      .header("Authorization", format!("Bearer {}", self.token))
      .multipart(form)
      .send().await?;
    match response.status() {
      StatusCode::OK => Ok(()),
      s => Err(Error::FailureStatus(s))
    }
  }
}