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use std::fmt::Display;
use super::functions::{Filter, Limit, Range, Sort};
pub struct ReadQuery<'a> {
bucket: &'a str,
range: Option<String>,
filters: Vec<String>,
sort: Option<String>,
limit: Option<String>,
}
impl<'a> ReadQuery<'a> {
pub fn new(bucket: &'a str) -> Self {
Self {
bucket,
range: None,
filters: Vec::new(),
sort: None,
limit: None,
}
}
pub fn range(mut self, range: Range) -> Self {
self.range.replace(range.to_string());
self
}
pub fn filter<T: Filter>(mut self, kind: T) -> Self {
self.filters.push(kind.to_string());
self
}
pub fn sort(mut self, sort: Sort) -> Self {
self.sort.replace(sort.to_string());
self
}
pub fn limit(mut self, limit: Limit) -> Self {
self.limit.replace(limit.to_string());
self
}
}
impl<'a> Display for ReadQuery<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"from(bucket: \"{}\"){}{}{}{}",
self.bucket,
if let Some(range) = &self.range {
format!(" |> {}", range)
} else {
String::new()
},
if !&self.filters.is_empty() {
format!(" |> {}", self.filters.join(" |> "))
} else {
String::new()
},
if let Some(sort) = &self.sort {
format!(" |> {}", sort)
} else {
String::new()
},
if let Some(limit) = &self.limit {
format!(" |> {}", limit)
} else {
String::new()
}
)
}
}