70 lines
1.9 KiB
Rust
70 lines
1.9 KiB
Rust
use std::collections::HashMap;
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use std::sync::RwLock;
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use chrono::{DateTime, Utc};
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#[derive(Clone, Debug)]
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pub struct GpsCoord {
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pub latitude: f64,
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pub longitude: f64,
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}
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#[derive(Clone, Debug)]
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pub struct LocationEntry {
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pub coord: GpsCoord,
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pub accuracy: Option<f64>,
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pub updated_at: DateTime<Utc>,
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pub is_live: bool,
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}
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pub struct LocationManager {
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locations: RwLock<HashMap<String, LocationEntry>>,
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}
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impl LocationManager {
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pub fn new() -> Self {
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Self { locations: RwLock::new(HashMap::new()) }
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}
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pub fn update(&self, source: &str, coord: GpsCoord, accuracy: Option<f64>, is_live: bool) {
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let entry = LocationEntry { coord, accuracy, updated_at: Utc::now(), is_live };
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self.locations.write().unwrap().insert(source.to_string(), entry);
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}
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pub fn get(&self, source: &str) -> Option<LocationEntry> {
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self.locations.read().unwrap().get(source).cloned()
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}
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pub fn latest(&self) -> Option<(String, LocationEntry)> {
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self.locations.read().unwrap()
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.iter()
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.max_by_key(|(_, e)| e.updated_at)
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.map(|(k, v)| (k.clone(), v.clone()))
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}
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pub fn all(&self) -> Vec<(String, LocationEntry)> {
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self.locations.read().unwrap()
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.iter()
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.map(|(k, v)| (k.clone(), v.clone()))
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.collect()
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}
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}
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impl Default for LocationManager {
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fn default() -> Self { Self::new() }
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}
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/// Write-only view of a location store.
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///
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/// Plugins store `Arc<dyn LocationUpdater>` so they can report GPS fixes
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/// without depending on the concrete `LocationManager` struct.
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pub trait LocationUpdater: Send + Sync {
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fn update(&self, source: &str, coord: GpsCoord, accuracy: Option<f64>, is_live: bool);
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}
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impl LocationUpdater for LocationManager {
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fn update(&self, source: &str, coord: GpsCoord, accuracy: Option<f64>, is_live: bool) {
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LocationManager::update(self, source, coord, accuracy, is_live);
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}
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}
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