import gleam/dynamic/decode
import gleam/float
import gleam/json
import gleam/string

pub fn parse_playback_time(
  json_string: String,
) -> Result(Float, json.DecodeError) {
  let decoder = {
    let float_dececoder = fn(data_string) {
      case float.parse(data_string) {
        Error(_) -> decode.failure(0.0, "data")
        Ok(float_value) -> decode.success(float_value)
      }
    }
    use data <- decode.field(
      "data",
      decode.then(decode.string, float_dececoder),
    )

    decode.success(data)
  }

  json.parse(from: string.trim(json_string), using: decoder)
}