use std::collections::HashMap;
use std::cell::RefCell;
use std::default::Default;
use std::collections::BTreeMap;
use serde_json as json;
use std::io;
use std::fs;
use std::mem;
use std::thread::sleep;

use crate::client;

// ##############
// UTILITIES ###
// ############

/// Identifies the an OAuth2 authorization scope.
/// A scope is needed when requesting an
/// [authorization token](https://developers.google.com/youtube/v3/guides/authentication).
#[derive(PartialEq, Eq, Hash)]
pub enum Scope {
    /// See, edit, configure, and delete your Google Cloud data and see the email address for your Google Account.
    CloudPlatform,
}

impl AsRef<str> for Scope {
    fn as_ref(&self) -> &str {
        match *self {
            Scope::CloudPlatform => "https://www.googleapis.com/auth/cloud-platform",
        }
    }
}

impl Default for Scope {
    fn default() -> Scope {
        Scope::CloudPlatform
    }
}



// ########
// HUB ###
// ######

/// Central instance to access all Texttospeech related resource activities
///
/// # Examples
///
/// Instantiate a new hub
///
/// ```test_harness,no_run
/// extern crate hyper;
/// extern crate hyper_rustls;
/// extern crate google_texttospeech1 as texttospeech1;
/// use texttospeech1::{Result, Error};
/// # async fn dox() {
/// use std::default::Default;
/// use texttospeech1::{Texttospeech, oauth2, hyper, hyper_rustls};
/// 
/// // Get an ApplicationSecret instance by some means. It contains the `client_id` and 
/// // `client_secret`, among other things.
/// let secret: oauth2::ApplicationSecret = Default::default();
/// // Instantiate the authenticator. It will choose a suitable authentication flow for you, 
/// // unless you replace  `None` with the desired Flow.
/// // Provide your own `AuthenticatorDelegate` to adjust the way it operates and get feedback about 
/// // what's going on. You probably want to bring in your own `TokenStorage` to persist tokens and
/// // retrieve them from storage.
/// let auth = oauth2::InstalledFlowAuthenticator::builder(
///         secret,
///         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
///     ).build().await.unwrap();
/// let mut hub = Texttospeech::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);
/// // You can configure optional parameters by calling the respective setters at will, and
/// // execute the final call using `doit()`.
/// // Values shown here are possibly random and not representative !
/// let result = hub.voices().list()
///              .language_code("no")
///              .doit().await;
/// 
/// match result {
///     Err(e) => match e {
///         // The Error enum provides details about what exactly happened.
///         // You can also just use its `Debug`, `Display` or `Error` traits
///          Error::HttpError(_)
///         |Error::Io(_)
///         |Error::MissingAPIKey
///         |Error::MissingToken(_)
///         |Error::Cancelled
///         |Error::UploadSizeLimitExceeded(_, _)
///         |Error::Failure(_)
///         |Error::BadRequest(_)
///         |Error::FieldClash(_)
///         |Error::JsonDecodeError(_, _) => println!("{}", e),
///     },
///     Ok(res) => println!("Success: {:?}", res),
/// }
/// # }
/// ```
#[derive(Clone)]
pub struct Texttospeech<> {
    pub client: hyper::Client<hyper_rustls::HttpsConnector<hyper::client::connect::HttpConnector>, hyper::body::Body>,
    pub auth: oauth2::authenticator::Authenticator<hyper_rustls::HttpsConnector<hyper::client::connect::HttpConnector>>,
    _user_agent: String,
    _base_url: String,
    _root_url: String,
}

impl<'a, > client::Hub for Texttospeech<> {}

impl<'a, > Texttospeech<> {

    pub fn new(client: hyper::Client<hyper_rustls::HttpsConnector<hyper::client::connect::HttpConnector>, hyper::body::Body>, authenticator: oauth2::authenticator::Authenticator<hyper_rustls::HttpsConnector<hyper::client::connect::HttpConnector>>) -> Texttospeech<> {
        Texttospeech {
            client,
            auth: authenticator,
            _user_agent: "google-api-rust-client/3.1.0".to_string(),
            _base_url: "https://texttospeech.googleapis.com/".to_string(),
            _root_url: "https://texttospeech.googleapis.com/".to_string(),
        }
    }

    pub fn text(&'a self) -> TextMethods<'a> {
        TextMethods { hub: &self }
    }
    pub fn voices(&'a self) -> VoiceMethods<'a> {
        VoiceMethods { hub: &self }
    }

    /// Set the user-agent header field to use in all requests to the server.
    /// It defaults to `google-api-rust-client/3.1.0`.
    ///
    /// Returns the previously set user-agent.
    pub fn user_agent(&mut self, agent_name: String) -> String {
        mem::replace(&mut self._user_agent, agent_name)
    }

    /// Set the base url to use in all requests to the server.
    /// It defaults to `https://texttospeech.googleapis.com/`.
    ///
    /// Returns the previously set base url.
    pub fn base_url(&mut self, new_base_url: String) -> String {
        mem::replace(&mut self._base_url, new_base_url)
    }

    /// Set the root url to use in all requests to the server.
    /// It defaults to `https://texttospeech.googleapis.com/`.
    ///
    /// Returns the previously set root url.
    pub fn root_url(&mut self, new_root_url: String) -> String {
        mem::replace(&mut self._root_url, new_root_url)
    }
}


// ############
// SCHEMAS ###
// ##########
/// Description of audio data to be synthesized.
/// 
/// This type is not used in any activity, and only used as *part* of another schema.
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct AudioConfig {
    /// Required. The format of the audio byte stream.
    #[serde(rename="audioEncoding")]
    pub audio_encoding: Option<String>,
    /// Optional. Input only. An identifier which selects 'audio effects' profiles that are applied on (post synthesized) text to speech. Effects are applied on top of each other in the order they are given. See [audio profiles](https://cloud.google.com/text-to-speech/docs/audio-profiles) for current supported profile ids.
    #[serde(rename="effectsProfileId")]
    pub effects_profile_id: Option<Vec<String>>,
    /// Optional. Input only. Speaking pitch, in the range [-20.0, 20.0]. 20 means increase 20 semitones from the original pitch. -20 means decrease 20 semitones from the original pitch.
    pub pitch: Option<f64>,
    /// Optional. The synthesis sample rate (in hertz) for this audio. When this is specified in SynthesizeSpeechRequest, if this is different from the voice's natural sample rate, then the synthesizer will honor this request by converting to the desired sample rate (which might result in worse audio quality), unless the specified sample rate is not supported for the encoding chosen, in which case it will fail the request and return google.rpc.Code.INVALID_ARGUMENT.
    #[serde(rename="sampleRateHertz")]
    pub sample_rate_hertz: Option<i32>,
    /// Optional. Input only. Speaking rate/speed, in the range [0.25, 4.0]. 1.0 is the normal native speed supported by the specific voice. 2.0 is twice as fast, and 0.5 is half as fast. If unset(0.0), defaults to the native 1.0 speed. Any other values < 0.25 or > 4.0 will return an error.
    #[serde(rename="speakingRate")]
    pub speaking_rate: Option<f64>,
    /// Optional. Input only. Volume gain (in dB) of the normal native volume supported by the specific voice, in the range [-96.0, 16.0]. If unset, or set to a value of 0.0 (dB), will play at normal native signal amplitude. A value of -6.0 (dB) will play at approximately half the amplitude of the normal native signal amplitude. A value of +6.0 (dB) will play at approximately twice the amplitude of the normal native signal amplitude. Strongly recommend not to exceed +10 (dB) as there's usually no effective increase in loudness for any value greater than that.
    #[serde(rename="volumeGainDb")]
    pub volume_gain_db: Option<f64>,
}

impl client::Part for AudioConfig {}


/// The message returned to the client by the `ListVoices` method.
/// 
/// # Activities
/// 
/// This type is used in activities, which are methods you may call on this type or where this type is involved in. 
/// The list links the activity name, along with information about where it is used (one of *request* and *response*).
/// 
/// * [list voices](VoiceListCall) (response)
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct ListVoicesResponse {
    /// The list of voices.
    pub voices: Option<Vec<Voice>>,
}

impl client::ResponseResult for ListVoicesResponse {}


/// Contains text input to be synthesized. Either `text` or `ssml` must be supplied. Supplying both or neither returns google.rpc.Code.INVALID_ARGUMENT. The input size is limited to 5000 characters.
/// 
/// This type is not used in any activity, and only used as *part* of another schema.
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct SynthesisInput {
    /// The SSML document to be synthesized. The SSML document must be valid and well-formed. Otherwise the RPC will fail and return google.rpc.Code.INVALID_ARGUMENT. For more information, see [SSML](https://cloud.google.com/text-to-speech/docs/ssml).
    pub ssml: Option<String>,
    /// The raw text to be synthesized.
    pub text: Option<String>,
}

impl client::Part for SynthesisInput {}


/// The top-level message sent by the client for the `SynthesizeSpeech` method.
/// 
/// # Activities
/// 
/// This type is used in activities, which are methods you may call on this type or where this type is involved in. 
/// The list links the activity name, along with information about where it is used (one of *request* and *response*).
/// 
/// * [synthesize text](TextSynthesizeCall) (request)
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct SynthesizeSpeechRequest {
    /// Required. The configuration of the synthesized audio.
    #[serde(rename="audioConfig")]
    pub audio_config: Option<AudioConfig>,
    /// Required. The Synthesizer requires either plain text or SSML as input.
    pub input: Option<SynthesisInput>,
    /// Required. The desired voice of the synthesized audio.
    pub voice: Option<VoiceSelectionParams>,
}

impl client::RequestValue for SynthesizeSpeechRequest {}


/// The message returned to the client by the `SynthesizeSpeech` method.
/// 
/// # Activities
/// 
/// This type is used in activities, which are methods you may call on this type or where this type is involved in. 
/// The list links the activity name, along with information about where it is used (one of *request* and *response*).
/// 
/// * [synthesize text](TextSynthesizeCall) (response)
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct SynthesizeSpeechResponse {
    /// The audio data bytes encoded as specified in the request, including the header for encodings that are wrapped in containers (e.g. MP3, OGG_OPUS). For LINEAR16 audio, we include the WAV header. Note: as with all bytes fields, protobuffers use a pure binary representation, whereas JSON representations use base64.
    #[serde(rename="audioContent")]
    pub audio_content: Option<String>,
}

impl client::ResponseResult for SynthesizeSpeechResponse {}


/// Description of a voice supported by the TTS service.
/// 
/// # Activities
/// 
/// This type is used in activities, which are methods you may call on this type or where this type is involved in. 
/// The list links the activity name, along with information about where it is used (one of *request* and *response*).
/// 
/// * [list voices](VoiceListCall) (none)
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct Voice {
    /// The languages that this voice supports, expressed as [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tags (e.g. "en-US", "es-419", "cmn-tw").
    #[serde(rename="languageCodes")]
    pub language_codes: Option<Vec<String>>,
    /// The name of this voice. Each distinct voice has a unique name.
    pub name: Option<String>,
    /// The natural sample rate (in hertz) for this voice.
    #[serde(rename="naturalSampleRateHertz")]
    pub natural_sample_rate_hertz: Option<i32>,
    /// The gender of this voice.
    #[serde(rename="ssmlGender")]
    pub ssml_gender: Option<String>,
}

impl client::Resource for Voice {}


/// Description of which voice to use for a synthesis request.
/// 
/// This type is not used in any activity, and only used as *part* of another schema.
/// 
#[derive(Default, Clone, Debug, Serialize, Deserialize)]
pub struct VoiceSelectionParams {
    /// Required. The language (and potentially also the region) of the voice expressed as a [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g. "en-US". This should not include a script tag (e.g. use "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred from the input provided in the SynthesisInput. The TTS service will use this parameter to help choose an appropriate voice. Note that the TTS service may choose a voice with a slightly different language code than the one selected; it may substitute a different region (e.g. using en-US rather than en-CA if there isn't a Canadian voice available), or even a different language, e.g. using "nb" (Norwegian Bokmal) instead of "no" (Norwegian)".
    #[serde(rename="languageCode")]
    pub language_code: Option<String>,
    /// The name of the voice. If not set, the service will choose a voice based on the other parameters such as language_code and gender.
    pub name: Option<String>,
    /// The preferred gender of the voice. If not set, the service will choose a voice based on the other parameters such as language_code and name. Note that this is only a preference, not requirement; if a voice of the appropriate gender is not available, the synthesizer should substitute a voice with a different gender rather than failing the request.
    #[serde(rename="ssmlGender")]
    pub ssml_gender: Option<String>,
}

impl client::Part for VoiceSelectionParams {}



// ###################
// MethodBuilders ###
// #################

/// A builder providing access to all methods supported on *text* resources.
/// It is not used directly, but through the `Texttospeech` hub.
///
/// # Example
///
/// Instantiate a resource builder
///
/// ```test_harness,no_run
/// extern crate hyper;
/// extern crate hyper_rustls;
/// extern crate google_texttospeech1 as texttospeech1;
/// 
/// # async fn dox() {
/// use std::default::Default;
/// use texttospeech1::{Texttospeech, oauth2, hyper, hyper_rustls};
/// 
/// let secret: oauth2::ApplicationSecret = Default::default();
/// let auth = oauth2::InstalledFlowAuthenticator::builder(
///         secret,
///         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
///     ).build().await.unwrap();
/// let mut hub = Texttospeech::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);
/// // Usually you wouldn't bind this to a variable, but keep calling *CallBuilders*
/// // like `synthesize(...)`
/// // to build up your call.
/// let rb = hub.text();
/// # }
/// ```
pub struct TextMethods<'a>
    where  {

    hub: &'a Texttospeech<>,
}

impl<'a> client::MethodsBuilder for TextMethods<'a> {}

impl<'a> TextMethods<'a> {
    
    /// Create a builder to help you perform the following task:
    ///
    /// Synthesizes speech synchronously: receive results after all text input has been processed.
    /// 
    /// # Arguments
    ///
    /// * `request` - No description provided.
    pub fn synthesize(&self, request: SynthesizeSpeechRequest) -> TextSynthesizeCall<'a> {
        TextSynthesizeCall {
            hub: self.hub,
            _request: request,
            _delegate: Default::default(),
            _additional_params: Default::default(),
            _scopes: Default::default(),
        }
    }
}



/// A builder providing access to all methods supported on *voice* resources.
/// It is not used directly, but through the `Texttospeech` hub.
///
/// # Example
///
/// Instantiate a resource builder
///
/// ```test_harness,no_run
/// extern crate hyper;
/// extern crate hyper_rustls;
/// extern crate google_texttospeech1 as texttospeech1;
/// 
/// # async fn dox() {
/// use std::default::Default;
/// use texttospeech1::{Texttospeech, oauth2, hyper, hyper_rustls};
/// 
/// let secret: oauth2::ApplicationSecret = Default::default();
/// let auth = oauth2::InstalledFlowAuthenticator::builder(
///         secret,
///         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
///     ).build().await.unwrap();
/// let mut hub = Texttospeech::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);
/// // Usually you wouldn't bind this to a variable, but keep calling *CallBuilders*
/// // like `list(...)`
/// // to build up your call.
/// let rb = hub.voices();
/// # }
/// ```
pub struct VoiceMethods<'a>
    where  {

    hub: &'a Texttospeech<>,
}

impl<'a> client::MethodsBuilder for VoiceMethods<'a> {}

impl<'a> VoiceMethods<'a> {
    
    /// Create a builder to help you perform the following task:
    ///
    /// Returns a list of Voice supported for synthesis.
    pub fn list(&self) -> VoiceListCall<'a> {
        VoiceListCall {
            hub: self.hub,
            _language_code: Default::default(),
            _delegate: Default::default(),
            _additional_params: Default::default(),
            _scopes: Default::default(),
        }
    }
}





// ###################
// CallBuilders   ###
// #################

/// Synthesizes speech synchronously: receive results after all text input has been processed.
///
/// A builder for the *synthesize* method supported by a *text* resource.
/// It is not used directly, but through a `TextMethods` instance.
///
/// # Example
///
/// Instantiate a resource method builder
///
/// ```test_harness,no_run
/// # extern crate hyper;
/// # extern crate hyper_rustls;
/// # extern crate google_texttospeech1 as texttospeech1;
/// use texttospeech1::api::SynthesizeSpeechRequest;
/// # async fn dox() {
/// # use std::default::Default;
/// # use texttospeech1::{Texttospeech, oauth2, hyper, hyper_rustls};
/// 
/// # let secret: oauth2::ApplicationSecret = Default::default();
/// # let auth = oauth2::InstalledFlowAuthenticator::builder(
/// #         secret,
/// #         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
/// #     ).build().await.unwrap();
/// # let mut hub = Texttospeech::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);
/// // As the method needs a request, you would usually fill it with the desired information
/// // into the respective structure. Some of the parts shown here might not be applicable !
/// // Values shown here are possibly random and not representative !
/// let mut req = SynthesizeSpeechRequest::default();
/// 
/// // You can configure optional parameters by calling the respective setters at will, and
/// // execute the final call using `doit()`.
/// // Values shown here are possibly random and not representative !
/// let result = hub.text().synthesize(req)
///              .doit().await;
/// # }
/// ```
pub struct TextSynthesizeCall<'a>
    where  {

    hub: &'a Texttospeech<>,
    _request: SynthesizeSpeechRequest,
    _delegate: Option<&'a mut dyn client::Delegate>,
    _additional_params: HashMap<String, String>,
    _scopes: BTreeMap<String, ()>
}

impl<'a> client::CallBuilder for TextSynthesizeCall<'a> {}

impl<'a> TextSynthesizeCall<'a> {


    /// Perform the operation you have build so far.
    pub async fn doit(mut self) -> client::Result<(hyper::Response<hyper::body::Body>, SynthesizeSpeechResponse)> {
        use std::io::{Read, Seek};
        use hyper::header::{CONTENT_TYPE, CONTENT_LENGTH, AUTHORIZATION, USER_AGENT, LOCATION};
        use client::ToParts;
        let mut dd = client::DefaultDelegate;
        let mut dlg: &mut dyn client::Delegate = match self._delegate {
            Some(d) => d,
            None => &mut dd
        };
        dlg.begin(client::MethodInfo { id: "texttospeech.text.synthesize",
                               http_method: hyper::Method::POST });
        let mut params: Vec<(&str, String)> = Vec::with_capacity(3 + self._additional_params.len());
        for &field in ["alt"].iter() {
            if self._additional_params.contains_key(field) {
                dlg.finished(false);
                return Err(client::Error::FieldClash(field));
            }
        }
        for (name, value) in self._additional_params.iter() {
            params.push((&name, value.clone()));
        }

        params.push(("alt", "json".to_string()));

        let mut url = self.hub._base_url.clone() + "v1/text:synthesize";
        if self._scopes.len() == 0 {
            self._scopes.insert(Scope::CloudPlatform.as_ref().to_string(), ());
        }


        let url = url::Url::parse_with_params(&url, params).unwrap();

        let mut json_mime_type: mime::Mime = "application/json".parse().unwrap();
        let mut request_value_reader =
            {
                let mut value = json::value::to_value(&self._request).expect("serde to work");
                client::remove_json_null_values(&mut value);
                let mut dst = io::Cursor::new(Vec::with_capacity(128));
                json::to_writer(&mut dst, &value).unwrap();
                dst
            };
        let request_size = request_value_reader.seek(io::SeekFrom::End(0)).unwrap();
        request_value_reader.seek(io::SeekFrom::Start(0)).unwrap();


        loop {
            let token = match self.hub.auth.token(&self._scopes.keys().collect::<Vec<_>>()[..]).await {
                Ok(token) => token.clone(),
                Err(err) => {
                    match  dlg.token(&err) {
                        Some(token) => token,
                        None => {
                            dlg.finished(false);
                            return Err(client::Error::MissingToken(err))
                        }
                    }
                }
            };
            request_value_reader.seek(io::SeekFrom::Start(0)).unwrap();
            let mut req_result = {
                let client = &self.hub.client;
                dlg.pre_request();
                let mut req_builder = hyper::Request::builder().method(hyper::Method::POST).uri(url.clone().into_string())
                        .header(USER_AGENT, self.hub._user_agent.clone())                            .header(AUTHORIZATION, format!("Bearer {}", token.as_str()));


                        let request = req_builder
                        .header(CONTENT_TYPE, format!("{}", json_mime_type.to_string()))
                        .header(CONTENT_LENGTH, request_size as u64)
                        .body(hyper::body::Body::from(request_value_reader.get_ref().clone()));

                client.request(request.unwrap()).await
                
            };

            match req_result {
                Err(err) => {
                    if let client::Retry::After(d) = dlg.http_error(&err) {
                        sleep(d);
                        continue;
                    }
                    dlg.finished(false);
                    return Err(client::Error::HttpError(err))
                }
                Ok(mut res) => {
                    if !res.status().is_success() {
                        let res_body_string = client::get_body_as_string(res.body_mut()).await;
                        let (parts, _) = res.into_parts();
                        let body = hyper::Body::from(res_body_string.clone());
                        let restored_response = hyper::Response::from_parts(parts, body);

                        let server_response = json::from_str::<serde_json::Value>(&res_body_string).ok();

                        if let client::Retry::After(d) = dlg.http_failure(&restored_response, server_response.clone()) {
                            sleep(d);
                            continue;
                        }

                        dlg.finished(false);

                        return match server_response {
                            Some(error_value) => Err(client::Error::BadRequest(error_value)),
                            None => Err(client::Error::Failure(restored_response)),
                        }
                    }
                    let result_value = {
                        let res_body_string = client::get_body_as_string(res.body_mut()).await;

                        match json::from_str(&res_body_string) {
                            Ok(decoded) => (res, decoded),
                            Err(err) => {
                                dlg.response_json_decode_error(&res_body_string, &err);
                                return Err(client::Error::JsonDecodeError(res_body_string, err));
                            }
                        }
                    };

                    dlg.finished(true);
                    return Ok(result_value)
                }
            }
        }
    }


    ///
    /// Sets the *request* property to the given value.
    ///
    /// Even though the property as already been set when instantiating this call,
    /// we provide this method for API completeness.
    pub fn request(mut self, new_value: SynthesizeSpeechRequest) -> TextSynthesizeCall<'a> {
        self._request = new_value;
        self
    }
    /// The delegate implementation is consulted whenever there is an intermediate result, or if something goes wrong
    /// while executing the actual API request.
    /// 
    /// It should be used to handle progress information, and to implement a certain level of resilience.
    ///
    /// Sets the *delegate* property to the given value.
    pub fn delegate(mut self, new_value: &'a mut dyn client::Delegate) -> TextSynthesizeCall<'a> {
        self._delegate = Some(new_value);
        self
    }

    /// Set any additional parameter of the query string used in the request.
    /// It should be used to set parameters which are not yet available through their own
    /// setters.
    ///
    /// Please note that this method must not be used to set any of the known parameters
    /// which have their own setter method. If done anyway, the request will fail.
    ///
    /// # Additional Parameters
    ///
    /// * *$.xgafv* (query-string) - V1 error format.
    /// * *access_token* (query-string) - OAuth access token.
    /// * *alt* (query-string) - Data format for response.
    /// * *callback* (query-string) - JSONP
    /// * *fields* (query-string) - Selector specifying which fields to include in a partial response.
    /// * *key* (query-string) - API key. Your API key identifies your project and provides you with API access, quota, and reports. Required unless you provide an OAuth 2.0 token.
    /// * *oauth_token* (query-string) - OAuth 2.0 token for the current user.
    /// * *prettyPrint* (query-boolean) - Returns response with indentations and line breaks.
    /// * *quotaUser* (query-string) - Available to use for quota purposes for server-side applications. Can be any arbitrary string assigned to a user, but should not exceed 40 characters.
    /// * *uploadType* (query-string) - Legacy upload protocol for media (e.g. "media", "multipart").
    /// * *upload_protocol* (query-string) - Upload protocol for media (e.g. "raw", "multipart").
    pub fn param<T>(mut self, name: T, value: T) -> TextSynthesizeCall<'a>
                                                        where T: AsRef<str> {
        self._additional_params.insert(name.as_ref().to_string(), value.as_ref().to_string());
        self
    }

    /// Identifies the authorization scope for the method you are building.
    ///
    /// Use this method to actively specify which scope should be used, instead the default `Scope` variant
    /// `Scope::CloudPlatform`.
    ///
    /// The `scope` will be added to a set of scopes. This is important as one can maintain access
    /// tokens for more than one scope.
    /// If `None` is specified, then all scopes will be removed and no default scope will be used either.
    /// In that case, you have to specify your API-key using the `key` parameter (see the `param()`
    /// function for details).
    ///
    /// Usually there is more than one suitable scope to authorize an operation, some of which may
    /// encompass more rights than others. For example, for listing resources, a *read-only* scope will be
    /// sufficient, a read-write scope will do as well.
    pub fn add_scope<T, S>(mut self, scope: T) -> TextSynthesizeCall<'a>
                                                        where T: Into<Option<S>>,
                                                              S: AsRef<str> {
        match scope.into() {
          Some(scope) => self._scopes.insert(scope.as_ref().to_string(), ()),
          None => None,
        };
        self
    }
}


/// Returns a list of Voice supported for synthesis.
///
/// A builder for the *list* method supported by a *voice* resource.
/// It is not used directly, but through a `VoiceMethods` instance.
///
/// # Example
///
/// Instantiate a resource method builder
///
/// ```test_harness,no_run
/// # extern crate hyper;
/// # extern crate hyper_rustls;
/// # extern crate google_texttospeech1 as texttospeech1;
/// # async fn dox() {
/// # use std::default::Default;
/// # use texttospeech1::{Texttospeech, oauth2, hyper, hyper_rustls};
/// 
/// # let secret: oauth2::ApplicationSecret = Default::default();
/// # let auth = oauth2::InstalledFlowAuthenticator::builder(
/// #         secret,
/// #         oauth2::InstalledFlowReturnMethod::HTTPRedirect,
/// #     ).build().await.unwrap();
/// # let mut hub = Texttospeech::new(hyper::Client::builder().build(hyper_rustls::HttpsConnector::with_native_roots().https_or_http().enable_http1().enable_http2().build()), auth);
/// // You can configure optional parameters by calling the respective setters at will, and
/// // execute the final call using `doit()`.
/// // Values shown here are possibly random and not representative !
/// let result = hub.voices().list()
///              .language_code("ipsum")
///              .doit().await;
/// # }
/// ```
pub struct VoiceListCall<'a>
    where  {

    hub: &'a Texttospeech<>,
    _language_code: Option<String>,
    _delegate: Option<&'a mut dyn client::Delegate>,
    _additional_params: HashMap<String, String>,
    _scopes: BTreeMap<String, ()>
}

impl<'a> client::CallBuilder for VoiceListCall<'a> {}

impl<'a> VoiceListCall<'a> {


    /// Perform the operation you have build so far.
    pub async fn doit(mut self) -> client::Result<(hyper::Response<hyper::body::Body>, ListVoicesResponse)> {
        use std::io::{Read, Seek};
        use hyper::header::{CONTENT_TYPE, CONTENT_LENGTH, AUTHORIZATION, USER_AGENT, LOCATION};
        use client::ToParts;
        let mut dd = client::DefaultDelegate;
        let mut dlg: &mut dyn client::Delegate = match self._delegate {
            Some(d) => d,
            None => &mut dd
        };
        dlg.begin(client::MethodInfo { id: "texttospeech.voices.list",
                               http_method: hyper::Method::GET });
        let mut params: Vec<(&str, String)> = Vec::with_capacity(3 + self._additional_params.len());
        if let Some(value) = self._language_code {
            params.push(("languageCode", value.to_string()));
        }
        for &field in ["alt", "languageCode"].iter() {
            if self._additional_params.contains_key(field) {
                dlg.finished(false);
                return Err(client::Error::FieldClash(field));
            }
        }
        for (name, value) in self._additional_params.iter() {
            params.push((&name, value.clone()));
        }

        params.push(("alt", "json".to_string()));

        let mut url = self.hub._base_url.clone() + "v1/voices";
        if self._scopes.len() == 0 {
            self._scopes.insert(Scope::CloudPlatform.as_ref().to_string(), ());
        }


        let url = url::Url::parse_with_params(&url, params).unwrap();



        loop {
            let token = match self.hub.auth.token(&self._scopes.keys().collect::<Vec<_>>()[..]).await {
                Ok(token) => token.clone(),
                Err(err) => {
                    match  dlg.token(&err) {
                        Some(token) => token,
                        None => {
                            dlg.finished(false);
                            return Err(client::Error::MissingToken(err))
                        }
                    }
                }
            };
            let mut req_result = {
                let client = &self.hub.client;
                dlg.pre_request();
                let mut req_builder = hyper::Request::builder().method(hyper::Method::GET).uri(url.clone().into_string())
                        .header(USER_AGENT, self.hub._user_agent.clone())                            .header(AUTHORIZATION, format!("Bearer {}", token.as_str()));


                        let request = req_builder
                        .body(hyper::body::Body::empty());

                client.request(request.unwrap()).await
                
            };

            match req_result {
                Err(err) => {
                    if let client::Retry::After(d) = dlg.http_error(&err) {
                        sleep(d);
                        continue;
                    }
                    dlg.finished(false);
                    return Err(client::Error::HttpError(err))
                }
                Ok(mut res) => {
                    if !res.status().is_success() {
                        let res_body_string = client::get_body_as_string(res.body_mut()).await;
                        let (parts, _) = res.into_parts();
                        let body = hyper::Body::from(res_body_string.clone());
                        let restored_response = hyper::Response::from_parts(parts, body);

                        let server_response = json::from_str::<serde_json::Value>(&res_body_string).ok();

                        if let client::Retry::After(d) = dlg.http_failure(&restored_response, server_response.clone()) {
                            sleep(d);
                            continue;
                        }

                        dlg.finished(false);

                        return match server_response {
                            Some(error_value) => Err(client::Error::BadRequest(error_value)),
                            None => Err(client::Error::Failure(restored_response)),
                        }
                    }
                    let result_value = {
                        let res_body_string = client::get_body_as_string(res.body_mut()).await;

                        match json::from_str(&res_body_string) {
                            Ok(decoded) => (res, decoded),
                            Err(err) => {
                                dlg.response_json_decode_error(&res_body_string, &err);
                                return Err(client::Error::JsonDecodeError(res_body_string, err));
                            }
                        }
                    };

                    dlg.finished(true);
                    return Ok(result_value)
                }
            }
        }
    }


    /// Optional. Recommended. [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag. If not specified, the API will return all supported voices. If specified, the ListVoices call will only return voices that can be used to synthesize this language_code. For example, if you specify `"en-NZ"`, all `"en-NZ"` voices will be returned. If you specify `"no"`, both `"no-\*"` (Norwegian) and `"nb-\*"` (Norwegian Bokmal) voices will be returned.
    ///
    /// Sets the *language code* query property to the given value.
    pub fn language_code(mut self, new_value: &str) -> VoiceListCall<'a> {
        self._language_code = Some(new_value.to_string());
        self
    }
    /// The delegate implementation is consulted whenever there is an intermediate result, or if something goes wrong
    /// while executing the actual API request.
    /// 
    /// It should be used to handle progress information, and to implement a certain level of resilience.
    ///
    /// Sets the *delegate* property to the given value.
    pub fn delegate(mut self, new_value: &'a mut dyn client::Delegate) -> VoiceListCall<'a> {
        self._delegate = Some(new_value);
        self
    }

    /// Set any additional parameter of the query string used in the request.
    /// It should be used to set parameters which are not yet available through their own
    /// setters.
    ///
    /// Please note that this method must not be used to set any of the known parameters
    /// which have their own setter method. If done anyway, the request will fail.
    ///
    /// # Additional Parameters
    ///
    /// * *$.xgafv* (query-string) - V1 error format.
    /// * *access_token* (query-string) - OAuth access token.
    /// * *alt* (query-string) - Data format for response.
    /// * *callback* (query-string) - JSONP
    /// * *fields* (query-string) - Selector specifying which fields to include in a partial response.
    /// * *key* (query-string) - API key. Your API key identifies your project and provides you with API access, quota, and reports. Required unless you provide an OAuth 2.0 token.
    /// * *oauth_token* (query-string) - OAuth 2.0 token for the current user.
    /// * *prettyPrint* (query-boolean) - Returns response with indentations and line breaks.
    /// * *quotaUser* (query-string) - Available to use for quota purposes for server-side applications. Can be any arbitrary string assigned to a user, but should not exceed 40 characters.
    /// * *uploadType* (query-string) - Legacy upload protocol for media (e.g. "media", "multipart").
    /// * *upload_protocol* (query-string) - Upload protocol for media (e.g. "raw", "multipart").
    pub fn param<T>(mut self, name: T, value: T) -> VoiceListCall<'a>
                                                        where T: AsRef<str> {
        self._additional_params.insert(name.as_ref().to_string(), value.as_ref().to_string());
        self
    }

    /// Identifies the authorization scope for the method you are building.
    ///
    /// Use this method to actively specify which scope should be used, instead the default `Scope` variant
    /// `Scope::CloudPlatform`.
    ///
    /// The `scope` will be added to a set of scopes. This is important as one can maintain access
    /// tokens for more than one scope.
    /// If `None` is specified, then all scopes will be removed and no default scope will be used either.
    /// In that case, you have to specify your API-key using the `key` parameter (see the `param()`
    /// function for details).
    ///
    /// Usually there is more than one suitable scope to authorize an operation, some of which may
    /// encompass more rights than others. For example, for listing resources, a *read-only* scope will be
    /// sufficient, a read-write scope will do as well.
    pub fn add_scope<T, S>(mut self, scope: T) -> VoiceListCall<'a>
                                                        where T: Into<Option<S>>,
                                                              S: AsRef<str> {
        match scope.into() {
          Some(scope) => self._scopes.insert(scope.as_ref().to_string(), ()),
          None => None,
        };
        self
    }
}


