Library to suggest and to find nearest by coordinates cities
Usage example ```rust use tokio; use anyhow::Result;
use geosuggestcore::{Engine, storage::{self, IndexStorage}}; use geosuggestutils::{IndexUpdater, IndexUpdaterSettings};
async fn main() -> Result<()> { println!("Build index..."); let engine = load_engine().await?;
println!(
"Suggest result: {:#?}",
engine.suggest::<&str>("Beverley", 1, None, Some(&["us"]))
);
println!(
"Reverse result: {:#?}",
engine.reverse::<&str>((11.138298, 57.510973), 1, None, None)
);
Ok(())
}
async fn loadengine() -> Result
let updater = IndexUpdater::new(IndexUpdaterSettings {
names: None, // no multilang support
..Default::default()
})?;
let storage = storage::bincode::Storage::new();
Ok(if index_file.exists() {
// load existed index
let metadata = storage
.read_metadata(index_file)
.map_err(|e| anyhow::anyhow!("On load index metadata from {index_file:?}: {e}"))?;
match metadata {
Some(m) if updater.has_updates(&m).await? => {
let engine = updater.build().await?;
storage
.dump_to(index_file, &engine)
.map_err(|e| anyhow::anyhow!("Failed dump to {index_file:?}: {e}"))?;
engine
}
_ => storage
.load_from(index_file)
.map_err(|e| anyhow::anyhow!("On load index from {index_file:?}: {e}"))?,
}
} else {
// initial
let engine = updater.build().await?;
storage
.dump_to(index_file, &engine)
.map_err(|e| anyhow::anyhow!("Failed dump to {index_file:?}: {e}"))?;
engine
})
} ```