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//! `FEEL` name implementation.

use dsntk_common::Jsonify;
use std::fmt;

/// `FEEL` name.
#[derive(Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd, Clone)]
pub struct Name(String);

impl From<Vec<String>> for Name {
  /// Converts a vector of strings into [Name].
  fn from(value: Vec<String>) -> Self {
    Self::new(&value.iter().map(|string| string.as_str()).collect::<Vec<&str>>())
  }
}

impl From<Vec<&str>> for Name {
  /// Converts a vector of string references into [Name].
  fn from(value: Vec<&str>) -> Self {
    Self::new(&value)
  }
}

impl From<String> for Name {
  /// Converts a [String] into [Name].
  fn from(value: String) -> Self {
    Self(value.trim().to_string())
  }
}

impl From<&String> for Name {
  /// Converts a reference to [String] into [Name].
  fn from(value: &String) -> Self {
    Self(value.trim().to_string())
  }
}

impl From<&str> for Name {
  /// Converts a reference to [str] into [Name].
  fn from(value: &str) -> Self {
    Self(value.trim().to_string())
  }
}

impl From<Name> for String {
  /// Converts [Name] to its [String] representation.
  fn from(value: Name) -> Self {
    value.0
  }
}

impl From<&Name> for String {
  /// Converts a reference to [Name] to its [String] representation.
  fn from(value: &Name) -> Self {
    value.0.clone()
  }
}

impl fmt::Display for Name {
  /// Implements [Display](fmt::Display) trait for [Name].
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
    write!(f, "{}", self.0)
  }
}

impl Jsonify for Name {
  /// Converts [Name] to its `JSON` representation.
  fn jsonify(&self) -> String {
    self.0.clone()
  }
}

impl Name {
  /// Creates a [Name] from string parts.
  pub fn new(parts: &[&str]) -> Self {
    let mut result = String::with_capacity(80);
    let mut current;
    let mut prev = false;
    for (index, part) in parts.iter().map(|s| s.trim()).enumerate() {
      current = matches!(part, "." | "/" | "-" | "'" | "+" | "*");
      if index > 0 && !prev && !current && !part.is_empty() {
        result.push(' ');
      }
      result.push_str(part);
      prev = current;
    }
    Self(result)
  }

  /// Returns `true` when this name is empty.
  pub fn is_empty(&self) -> bool {
    self.0.is_empty()
  }
}