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use std::collections::hash_map::HashMap;
use num::complex::Complex;
use crate::value::Value;
use crate::metric::Metric;
use crate::error::BundError;
use crate::types::*;

impl Value {
    pub fn cast_float(&self) -> Result<f64, Box<dyn std::error::Error>> {
        match self.data {
            Val::F64(f_val) => {
                return Result::Ok(f_val);
            }
            _ => return Err(format!("This Dynamic type is not float: {}", self.dt).into()),
        }
    }
    pub fn cast_int(&self) -> Result<i64, Box<dyn std::error::Error>> {
        match self.data {
            Val::I64(i_val) => {
                return Result::Ok(i_val);
            }
            _ => return Err("This Dynamic type is not integer".into()),
        }
    }
    pub fn cast_bool(&self) -> Result<bool, Box<dyn std::error::Error>> {
        match self.data {
            Val::Bool(b_val) => {
                return Result::Ok(b_val);
            }
            _ => return Err("This Dynamic type is not bool".into()),
        }
    }
    pub fn cast_string(&self) -> Result<String, Box<dyn std::error::Error>> {
        match &self.data {
            Val::String(s_val) => {
                return Result::Ok(s_val.to_string());
            }
            _ => return Err("This Dynamic type is not string".into()),
        }
    }
    pub fn cast_bin(&self) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
        match &self.data {
            Val::Binary(b_val) => {
                return Result::Ok(b_val.to_vec());
            }
            _ => return Err("This Dynamic type is not binary".into()),
        }
    }
    pub fn cast_error(&self) -> Result<BundError, Box<dyn std::error::Error>> {
        match &self.data {
            Val::Error(e_val) => {
                return Result::Ok(e_val.clone());
            }
            _ => return Err("This Dynamic type is not error".into()),
        }
    }
    pub fn cast_list(&self) -> Result<Vec<Value>, Box<dyn std::error::Error>> {
        match &self.data {
            Val::List(l_val) => {
                return Result::Ok(l_val.clone());
            }
            _ => return Err("This Dynamic type is not list".into()),
        }
    }
    pub fn cast_dict(&self) -> Result<HashMap<String,Value>, Box<dyn std::error::Error>> {
        match &self.data {
            Val::Map(m_val) => {
                return Result::Ok(m_val.clone());
            }
            _ => return Err("This Dynamic type is not dict".into()),
        }
    }
    pub fn cast_timestamp(&self) -> Result<u128, Box<dyn std::error::Error>> {
        if self.dt != TIME {
            return Err("This Dynamic type is not TIME".into());
        }
        match &self.data {
            Val::Time(t_val) => {
                return Result::Ok(t_val.clone());
            }
            _ => return Err("This Dynamic type is not TIME".into()),
        }
    }
    pub fn cast_complex_int(&self) -> Result<Complex<i64>, Box<dyn std::error::Error>> {
        if self.dt != CINTEGER {
            return Err(format!("This Dynamic type is not CINTEGER: {}", &self.dt).into());
        }
        match &self.data {
            Val::List(l_val) => {
                let res = Complex::new(l_val[0].cast_int().unwrap(), l_val[1].cast_int().unwrap());
                return Result::Ok(res);
            }
            _ => return Err("This Dynamic type is not CINTEGER".into()),
        }
    }
    pub fn cast_complex_float(&self) -> Result<Complex<f64>, Box<dyn std::error::Error>> {
        if self.dt != CFLOAT {
            return Err(format!("This Dynamic type is not CFLOAT: {}", &self.dt).into());
        }
        match &self.data {
            Val::List(l_val) => {
                let res = Complex::new(l_val[0].cast_float().unwrap(), l_val[1].cast_float().unwrap());
                return Result::Ok(res);
            }
            _ => return Err("This Dynamic type is not CFLOAT".into()),
        }
    }
    pub fn cast_metrics(&self) -> Result<Vec<Metric>, Box<dyn std::error::Error>> {
        if self.dt != METRICS {
            return Err("This Dynamic type is not METRICS".into());
        }
        match &self.data {
            Val::Metrics(m_val) => {
                return Result::Ok(m_val.clone());
            }
            _ => return Err("This Dynamic type is not METRICS".into()),
        }
    }
}