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pub mod data;
extern crate serde_json;
use data::{ChartData, DatasetData, ServerData};
use std::collections::HashMap;
pub struct Chartisan<'a> {
server_data: ServerData<'a>,
}
impl<'a> Chartisan<'a> {
pub fn build() -> Chartisan<'a> {
Chartisan {
server_data: ServerData {
chart: ChartData {
labels: &[],
extra: None,
},
datasets: Vec::new(),
},
}
}
pub fn labels(&mut self, labels: &'a [&'a str]) -> &mut Self {
self.server_data.chart.labels = labels;
self
}
pub fn extra(&mut self, value: HashMap<&'a str, &'a str>) -> &mut Self {
self.server_data.chart.extra = Some(value);
self
}
pub fn advanced_dataset(
&mut self,
name: &'a str,
values: &'a [f64],
extra: Option<HashMap<&'a str, &'a str>>,
) -> &mut Self {
match self.get_dataset(name) {
Some(dataset) => {
dataset.name = name;
dataset.values = values;
dataset.extra = extra;
}
None => self.server_data.datasets.push(DatasetData {
name,
values,
extra,
}),
};
self
}
pub fn dataset(&mut self, name: &'a str, values: &'a [f64]) -> &mut Self {
self.advanced_dataset(name, values, None)
}
pub fn to_json(&self) -> String {
serde_json::to_string(&self.server_data)
.unwrap_or("{\"error\": \"Error converting chart to JSON\"}".to_string())
}
pub fn to_object(&mut self) -> &mut ServerData<'a> {
&mut self.server_data
}
fn get_dataset(&mut self, name: &'a str) -> Option<&mut DatasetData<'a>> {
for dataset in &mut self.server_data.datasets {
if dataset.name == name {
return Some(dataset);
}
}
None
}
}