import gleam/dynamic/decode.{type Decoder}
import gleam/json.{type Json}
import gleam/string

pub opaque type SectorSymbol {
  SectorSymbol(String)
}

pub const min_length: Int = 1

pub fn parse(value: String) -> Result(SectorSymbol, Nil) {
  case string.length(value) >= min_length {
    True -> Ok(SectorSymbol(value))
    False -> Error(Nil)
  }
}

pub fn decoder() -> Decoder(SectorSymbol) {
  use value <- decode.then(decode.string)
  case parse(value) {
    Ok(sector_symbol) -> decode.success(sector_symbol)
    Error(Nil) -> decode.failure(SectorSymbol("invalid"), "SectorSymbol")
  }
}

pub fn to_string(sector_symbol: SectorSymbol) -> String {
  let SectorSymbol(value) = sector_symbol
  value
}

pub fn encode(sector_symbol: SectorSymbol) -> Json {
  json.string(to_string(sector_symbol))
}