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|
use chrono::{DateTime, NaiveDate, Utc};
use serde::{Deserialize, Serialize};
use strum::{EnumIter, IntoStaticStr};
use uuid::Uuid;
#[derive(sqlx::Type, Serialize, Deserialize, EnumIter, Debug, IntoStaticStr, Clone, Copy)]
#[sqlx(type_name = "metric_type")]
pub enum MetricType {
BodyWeight,
Hip,
Waist,
}
impl MetricType {
pub fn accepts(&self, unit: &Unit) -> bool {
matches!(
(self, unit),
(MetricType::BodyWeight, Unit::Kilogram)
| (MetricType::Hip, Unit::Centimeter)
| (MetricType::Waist, Unit::Centimeter)
)
}
}
#[derive(sqlx::Type, Serialize, Deserialize, EnumIter, Debug, IntoStaticStr)]
#[sqlx(type_name = "unit")]
pub enum Unit {
Kilogram,
Centimeter,
}
#[derive(Serialize)]
pub struct MeasurementView {
pub id: Uuid,
pub measured_at: DateTime<Utc>,
pub metric_type: MetricType,
pub value: f64,
pub unit: Unit,
}
#[derive(Deserialize)]
#[serde(try_from = "MeasurementDataUnchecked")]
pub struct MeasurementData {
pub measured_at: DateTime<Utc>,
pub metric_type: MetricType,
pub value: f64,
pub unit: Unit,
}
#[derive(Deserialize)]
struct MeasurementDataUnchecked {
pub measured_at: DateTime<Utc>,
pub metric_type: MetricType,
pub value: f64,
pub unit: Unit,
}
impl TryFrom<MeasurementDataUnchecked> for MeasurementData {
type Error = String;
fn try_from(value: MeasurementDataUnchecked) -> Result<Self, Self::Error> {
if value.value < 0.0 || value.value.is_nan() {
return Err("Invalid value".to_string());
}
if !value.metric_type.accepts(&value.unit) {
let metric_type: &'static str = (&value.metric_type).into();
let unit: &'static str = (&value.unit).into();
return Err(format!("Invalid pair {}, {}", metric_type, unit));
}
Ok(Self {
measured_at: value.measured_at,
metric_type: value.metric_type,
value: value.value,
unit: value.unit,
})
}
}
#[derive(Serialize)]
pub struct MetricUnitPair {
pub metric_type: MetricType,
pub unit: Unit,
}
#[derive(Deserialize, Default)]
#[serde(rename_all = "lowercase")]
pub enum Order {
#[default]
Asc,
Desc,
}
#[derive(Deserialize)]
pub struct ListQuery {
pub date: Option<NaiveDate>,
pub from: Option<NaiveDate>,
pub to: Option<NaiveDate>,
pub limit: Option<i64>,
#[serde(default)]
pub order: Order,
}
#[cfg(test)]
mod tests {
use super::*;
use sqlx::PgPool;
use strum::IntoEnumIterator;
#[sqlx::test]
async fn unit_enums_match(pool: PgPool) {
let values: Vec<Unit> = sqlx::query_scalar("SELECT enum_range(NULL::unit)")
.fetch_one(&pool)
.await
.expect("Database has a variant that Rust doesn't");
assert_eq!(
values.len(),
Unit::iter().count(),
"Rust has a variant that the database doesn't"
);
}
#[sqlx::test]
async fn metric_type_enums_match(pool: PgPool) {
let values: Vec<MetricType> = sqlx::query_scalar("SELECT enum_range(NULL::metric_type)")
.fetch_one(&pool)
.await
.expect("Database has a variant that Rust doesn't");
assert_eq!(
values.len(),
MetricType::iter().count(),
"Rust has a variant that the database doesn't"
);
}
}
|
