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use crate::error::{Error, Result};
use crate::model::data_entry::DataEntry;
use crate::model::AssetId;
use serde_json::Value;
pub struct JsonDeserializer;
impl JsonDeserializer {
pub fn safe_to_string_from_field(json: &Value, field_name: &str) -> Result<String> {
let string = json[field_name]
.as_str()
.ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?;
Ok(string.into())
}
pub fn safe_to_int_from_field(json: &Value, field_name: &str) -> Result<i64> {
let int = match json[field_name].as_i64() {
Some(int) => int,
None => match json[field_name].as_str() {
Some(int) => int.parse().map_err(|_| Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?,
None => Err(Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?,
},
};
Ok(int)
}
pub fn safe_to_array_from_field(json: &Value, field_name: &str) -> Result<Vec<Value>> {
let array = json[field_name]
.as_array()
.ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?;
Ok(array.to_owned())
}
pub fn safe_to_map_from_field(
json: &Value,
field_name: &str,
) -> Result<serde_json::Map<String, Value>> {
let map = json[field_name]
.as_object()
.ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?;
Ok(map.to_owned())
}
pub fn safe_to_boolean_from_field(json: &Value, field_name: &str) -> Result<bool> {
let bool = json[field_name]
.as_bool()
.ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: field_name.to_owned(),
})?;
Ok(bool)
}
pub fn safe_to_string(json: &Value) -> Result<String> {
let string = json.as_str().ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: "String".to_owned(),
})?;
Ok(string.to_owned())
}
pub fn safe_to_int(json: &Value) -> Result<i64> {
let int = json.as_i64().ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: "i64".to_owned(),
})?;
Ok(int.to_owned())
}
pub fn safe_to_boolean(json: &Value) -> Result<bool> {
let bool = json.as_bool().ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: "bool".to_owned(),
})?;
Ok(bool)
}
pub fn safe_to_array(json: &Value) -> Result<Vec<Value>> {
let array = json.as_array().ok_or_else(|| Error::JsonParseError {
json: json.to_string(),
field: "Vec<Value>".to_owned(),
})?;
Ok(array.to_owned())
}
pub fn deserialize_data_array(value: &Value) -> Result<Vec<DataEntry>> {
let data_array = Self::safe_to_array(value)?;
data_array
.iter()
.map(|entry| entry.try_into())
.collect::<Result<Vec<DataEntry>>>()
}
pub fn asset_id_from_json(json: &Value, field_name: &str) -> Result<Option<AssetId>> {
let asset_id = match json[field_name].as_str() {
Some(asset_id) => Some(AssetId::from_string(asset_id)?),
None => None,
};
Ok(asset_id)
}
}