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use serde::{Deserialize, Serialize};
use time::{serde::iso8601, OffsetDateTime};
use crate::{conversion, MeasureKey};
/// Represents quantitative data about the server.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Measure {
/// The unique keystring for the requested measure.
pub key: MeasureKey,
/// The units associated with this data item’s value, if applicable.
pub unit: Option<String>,
/// The numeric total associated with the requested measure.
#[serde(with = "conversion::string_to::u64")]
pub total: u64,
/// A human-readable formatted value for this data item.
#[serde(default)]
pub human_value: Option<String>,
/// The numeric total associated with the requested measure, in the previous
/// period. Previous period is calculated by subtracting the start_at and
/// end_at dates, then offsetting both start and end dates backwards by the
/// length of the time period.
#[serde(with = "conversion::string_to::u64::option")]
pub previous_total: Option<u64>,
/// The data available for the requested measure, split into daily buckets.
pub data: Vec<Data>,
}
/// One day's bucket of data in a measure.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Data {
/// Midnight on the requested day in the time period.
#[serde(with = "iso8601")]
pub date: OffsetDateTime,
/// The numeric value for the requested measure.
#[serde(with = "conversion::string_to::u64")]
pub value: u64,
}
#[cfg(test)]
mod tests {
use time::Month;
use super::*;
#[test]
fn test_measure_example() {
let example = r#"{
"key": "active_users",
"unit": null,
"total": "2",
"previous_total": "0",
"data": [
{
"date": "2022-09-14T00:00:00Z",
"value": "0"
},
{
"date": "2022-09-15T00:00:00Z",
"value": "0"
},
{
"date": "2022-09-16T00:00:00Z",
"value": "0"
},
{
"date": "2022-09-17T00:00:00Z",
"value": "1"
},
{
"date": "2022-09-18T00:00:00Z",
"value": "1"
},
{
"date": "2022-09-19T00:00:00Z",
"value": "1"
},
{
"date": "2022-09-20T00:00:00Z",
"value": "2"
},
{
"date": "2022-09-21T00:00:00Z",
"value": "1"
}
]
}"#;
let subject: Measure = serde_json::from_str(example).unwrap();
assert_eq!(subject.key, MeasureKey::new("active_users"));
assert!(subject.unit.is_none());
assert_eq!(subject.total, 2);
assert_eq!(subject.previous_total, Some(0));
assert!(subject.human_value.is_none());
let data = &subject.data[0];
assert_eq!(data.value, 0);
let date = data.date.date();
assert_eq!(date.year(), 2022);
assert_eq!(date.month(), Month::September);
assert_eq!(date.day(), 14);
}
}
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