annis 0.0.6

use crate::Service;
use reqwest::{Method, Url};
use reqwest::blocking::{Client};
use serde_json::Value;

/// A make request to autholize.

#[derive(Debug, Clone)]
pub struct OAuth {
    pub client_id: String,
}

/// To make Authorize URL.

#[derive(Debug, PartialEq)]
pub struct AuthorizeUrl {
    pub client_id: String,
    pub redirect_uri: String,
    pub scope: String,
}

/// A request to get Annict access token.

#[derive(Debug, PartialEq)]
pub struct AccessToken {
    pub client_id: String,
    pub client_secret: String,
    pub redirect_uri: String,
    pub code: String,
}

type Revoke = String;

impl OAuth {
    pub fn client_id<P>(client_id: P) -> OAuth
    where
        P: Into<String>,
    {
        OAuth {
            client_id: client_id.into(),
        }
    }

    /// Request to /oauth/token/info
    ///
    /// Examples
    /// ========
    /// ```rust
    /// # use annis::{Client, OAuth, Error};
    /// #
    /// # fn run() -> Result<(), Error> {
    /// let client = Client::set_token("annict_access_token");
    ///
    /// let info = OAuth::info();
    ///
    /// client.call(info)?;
    /// # Ok(())
    /// # }
    /// ```

    pub fn info() -> Service<String> {
        Service {
            method: Method::GET,
            url: "https://api.annict.com/oauth/token/info".to_string(),
            params: None,
        }
    }

    /// Request to /oauth/revoke
    ///
    /// Examples
    /// ========
    /// ```rust
    /// # use annis::{Client, OAuth, Error};
    /// #
    /// # fn run() -> Result<(), Error> {
    /// let client = Client::set_token("annict_access_token");
    ///
    /// let revoke = OAuth::revoke("revoke_access_token");
    ///
    /// client.call(revoke)?;
    /// # Ok(())
    /// # }
    /// ```

    pub fn revoke<A>(access_token: A) -> Service<Revoke>
    where
        A: Into<String>,
    {
        Service {
            method: Method::POST,
            url: "https://api.annict.com/oauth/revoke".to_string(),
            params: Some(vec![("token".to_string(), access_token.into())]),
        }
    }

    pub fn authorize_url(&self) -> AuthorizeUrl {
        AuthorizeUrl::new(self.clone().client_id)
    }

    pub fn access_token(&self) -> AccessToken {
        AccessToken::new(self.clone().client_id)
    }
}

impl AuthorizeUrl {
    pub fn new(client_id: String) -> Self {
        AuthorizeUrl {
            client_id: client_id,
            redirect_uri: "urn:ietf:wg:oauth:2.0:oob".into(),
            scope: "read".into(),
        }
    }

    pub fn redirect_uri<P>(&mut self, redirect_uri: P) -> &mut Self
    where
        P: Into<String>,
    {
        self.redirect_uri = redirect_uri.into();
        self
    }

    pub fn scope<P>(&mut self, scope: P) -> &mut Self
    where
        P: Into<String>,
    {
        self.scope = scope.into();
        self
    }

    pub fn build(&self) -> String {
        format!("https://annict.com/oauth/authorize?client_id={}&redirect_uri={}&response_type=code&scope={}",self.client_id, self.redirect_uri, self.scope)
    }
}

impl AccessToken {
    pub fn new(client_id: String) -> Self {
        AccessToken {
            client_id: client_id.into(),
            client_secret: "".into(),
            code: "".into(),
            redirect_uri: "urn:ietf:wg:oauth:2.0:oob".into(),
        }
    }

    pub fn client_secret<P>(&mut self, client_secret: P) -> &mut Self
    where
        P: Into<String>,
    {
        self.client_secret = client_secret.into();
        self
    }

    pub fn code<P>(&mut self, code: P) -> &mut Self
    where
        P: Into<String>,
    {
        self.code = code.into();
        self
    }

    pub fn redirect_uri<P>(&mut self, redirect_uri: P) -> &mut Self
    where
        P: Into<String>,
    {
        self.redirect_uri = redirect_uri.into();
        self
    }

    pub fn build(&self) -> String {
        let params: Vec<(&str, &str)> = vec![
            ("client_id", &self.client_id),
            ("client_secret", &self.client_secret),
            ("grant_type", "authorization_code"),
            ("redirect_uri", &self.redirect_uri),
            ("code", &self.code),
        ];
        let uri = Url::parse_with_params("https://api.annict.com/oauth/token", &params).unwrap();
        Client::new()
            .post(uri.as_str())
            .form(&params)
            .send()
            .unwrap()
            .json::<Value>()
            .unwrap()["access_token"]
            .to_string()
            .trim_matches('\"')
            .to_string()
    }
}