+use std::fs;
+use std::error::Error;
+
use serde::{Serialize, Deserialize};
+const DB_PATH: &str = "/tmp/contacts.json";
+
#[derive(Serialize, Deserialize, Debug)]
enum Social {
Twitter(String),
]
}
-fn create_contacts() {
+fn create_contacts() -> Result<(), Box<dyn Error>> {
let contacts = build_contacts();
- // FIXME: Use ? and return Result
- let serialized = serde_json::to_string(&contacts).unwrap();
- println!("serialized: {}", serialized);
+ let serialized = serde_json::to_string(&contacts)?;
+ log::debug!("serialized: {}", &serialized);
+ let mut f = fs::File::create(DB_PATH)?;
+ serde_json::to_writer_pretty(&mut f, &contacts)?;
+ Ok(())
+}
+
+fn load_contacts() -> Result<Contacts, Box<dyn Error>> {
+ let f = fs::File::open(DB_PATH)?;
+ Ok(serde_json::from_reader(f)?)
}
-fn main() {
- create_contacts();
+fn main() -> Result<(), Box<dyn Error>> {
+ env_logger::init();
+ create_contacts()?;
+ let contacts = load_contacts()?;
+ println!("deserialized: {:?}", &contacts);
+ Ok(())
}