#[derive(serde::Deserialize)]
pub struct DeepL {
  translations: Vec<Translation>,
}

impl DeepL {
  pub fn text(&self) -> String { self.translations[0].text.clone() }

  pub fn detected_source_language(&self) -> String {
    self.translations[0].detected_source_language.clone()
  }
}

#[derive(serde::Deserialize)]
struct Translation {
  pub text:                     String,
  pub detected_source_language: String,
}

pub fn translate(
  text: &str,
  language: &str,
) -> Result<DeepL, serde_json::Error> {
  let deepl_response: DeepL = serde_json::from_str({
    &reqwest::blocking::Client::new()
      .post("https://api-free.deepl.com/v2/translate")
      .header(
        "Authorization",
        "DeepL-Auth-Key 182c8c21-730e-f99d-8f2e-61e9cc861faa:fx",
      )
      .form(&[("text", text), ("target_lang", language)])
      .send()
      .unwrap()
      .text()
      .unwrap()
  })?;

  Ok(deepl_response)
}

pub fn language_code_to_language_name(language_code: &str) -> String {
  match language_code {
    "am" => "Amharic".to_string(),
    "ar" => "Arabic".to_string(),
    "eu" => "Basque".to_string(),
    "bn" => "Bengali".to_string(),
    // "en-GB" => "English (UK)".to_string(),
    "en-gb" => "English (UK)".to_string(),
    // "pt-BR" => "Portuguese (Brazil)".to_string(),
    "pt-br" => "Portuguese (Brazil)".to_string(),
    "bg" => "Bulgarian".to_string(),
    "ca" => "Catalan".to_string(),
    "chr" => "Cherokee".to_string(),
    "hr" => "Croatian".to_string(),
    "cs" => "Czech".to_string(),
    "da" => "Danish".to_string(),
    "nl" => "Dutch".to_string(),
    "en" => "English (US)".to_string(),
    "et" => "Estonian".to_string(),
    "fil" => "Filipino".to_string(),
    "fi" => "Finnish".to_string(),
    "fr" => "French".to_string(),
    "de" => "German".to_string(),
    "el" => "Greek".to_string(),
    "gu" => "Gujarati".to_string(),
    "iw" => "Hebrew".to_string(),
    "hi" => "Hindi".to_string(),
    "hu" => "Hungarian".to_string(),
    "is" => "Icelandic".to_string(),
    "id" => "Indonesian".to_string(),
    "it" => "Italian".to_string(),
    "ja" => "Japanese".to_string(),
    "kn" => "Kannada".to_string(),
    "ko" => "Korean".to_string(),
    "lv" => "Latvian".to_string(),
    "lt" => "Lithuanian".to_string(),
    "ms" => "Malay".to_string(),
    "ml" => "Malayalam".to_string(),
    "mr" => "Marathi".to_string(),
    "no" => "Norwegian".to_string(),
    "pl" => "Polish".to_string(),
    // "pt-PT" => "Portuguese (Portugal)".to_string(),
    "pt-pt" => "Portuguese (Portugal)".to_string(),
    "ro" => "Romanian".to_string(),
    "ru" => "Russian".to_string(),
    "sr" => "Serbian".to_string(),
    // "zh-CN" => "Chinese (PRC)".to_string(),
    "zh-cn" => "Chinese (PRC)".to_string(),
    "sk" => "Slovak".to_string(),
    "sl" => "Slovenian".to_string(),
    "es" => "Spanish".to_string(),
    "sw" => "Swahili".to_string(),
    "sv" => "Swedish".to_string(),
    "ta" => "Tamil".to_string(),
    "te" => "Telugu".to_string(),
    "th" => "Thai".to_string(),
    // "zh-TW" => "Chinese (Taiwan)".to_string(),
    "zh-tw" => "Chinese (Taiwan)".to_string(),
    "tr" => "Turkish".to_string(),
    "ur" => "Urdu".to_string(),
    "uk" => "Ukrainian".to_string(),
    "vi" => "Vietnamese".to_string(),
    "cy" => "Welsh".to_string(),
    _ => format!("Unknown ({language_code})"),
  }
}