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mod language_texts;
pub use language_texts::LanguageTexts;
use std::{fs::read_to_string, path::Path};
use crate::{Config, Value};
pub struct Languages {
config: Config,
langs: Vec<LanguageTexts>,
}
impl Languages {
/// Create a new Languages object using a configuration.
///
/// # Example
/// ```rust, ignore
/// use languages_rs::{Config, Languages};
///
/// let config = Config::default().unwrap();
/// let texts = Languages::new(&config);
/// ```
pub fn new(config: &Config) -> Self {
Self {
config: config.clone(),
langs: Vec::new(),
}
}
/// Get all texts of a specific language.
///
/// # Example
/// ```rust, ignore
/// use languages_rs::{Config, Languages};
///
/// let mut config = Config::default().unwrap();
/// assert!(config.add_language(String::from("en")).is_ok());
///
/// let mut texts = Languages::new(&config);
///
/// let texts_en = texts.try_get_language("en");
/// assert!(texts_en.is_ok());
///
/// assert_eq!(texts_en.try_get_text("message"), Some(Value::String(String::from("Hi"))));
/// ```
pub fn try_get_language(&mut self, lang: &str) -> anyhow::Result<LanguageTexts> {
// Check if the configuration has the lang.
if !self.config.get_languages().contains(&String::from(lang)) {
return Err(anyhow::Error::msg(format!(
"Cannot find the `{}` lang.",
lang
)));
}
// Check if the language is in the cache and return it if exists.
for lang_texts in self.langs.iter() {
if lang_texts.get_language() == *lang {
return Ok(lang_texts.clone());
}
}
// Get the language texts file location.
let path = Path::new(&self.config.get_directory()).join(format!(
"{}{}",
lang,
self.config.get_format().get_file_extension()
));
// Check if the file exists.
if !path.exists() {
return Err(anyhow::Error::msg(format!(
"Cannot find `{}` file.",
path.display()
)));
} else if !path.is_file() {
return Err(anyhow::Error::msg(format!(
"The path `{}` is not a file.",
path.display()
)));
}
// Generate the language texts object for the file.
let lang_texts = LanguageTexts::new(
String::from(lang),
Value::from_string(read_to_string(path)?, self.config.get_format())?,
)?;
// Add the language texts to the cache.
self.langs.push(lang_texts.clone());
Ok(lang_texts)
}
/// Get a text of a specific language.
///
/// # Example
/// ```rust, ignore
/// use languages_rs::{Config, Languages};
///
/// let mut config = Config::default().unwrap();
/// assert!(config.add_language(String::from("en")).is_ok());
///
/// let mut texts = Languages::new(&config);
///
/// let message = texts.try_get_text_from_language("en", "message");
/// assert!(message.is_ok());
/// assert_eq!(message.unwrap(), Some(Value::String(String::from("Hi"))));
/// ```
pub fn try_get_text_from_language(
&mut self,
lang: &str,
text: &str,
) -> anyhow::Result<Option<Value>> {
Ok(self.try_get_language(lang)?.try_get_text(text))
}
}