248 lines
9.5 KiB
Rust
248 lines
9.5 KiB
Rust
extern crate log;
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use crate::user::User;
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use crate::file_io::{read_json, append_json, write_json};
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extern crate sha1;
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use serde_json::Result;
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#[get("/")]
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pub fn index() -> &'static str {
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"API Info:
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`POST /api/register/<name>/<pin>/<pronouns>` Register the username with the pin provided if it doesn't already exist
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`GET /api/users/<name>` Check if the user exists
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`GET /api/users/<name>/<pin>` Check if the user exists, and if the pin provided matches
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`POST /api/users/change/<name>/<pin>/<new-name>/<new-pin>` Change a users name and/or pin
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`GET /api/about/name/<name>` Get the name of a user
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`GET /api/about/pronouns/<name>` Get the pronouns of a user"
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}
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/*
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// The output is wrapped in a Result to allow matching on errors
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// Returns an Iterator to the Reader of the lines of the file.
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fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
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where P: AsRef<Path>, {
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let file = File::open(filename)?;
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Ok(io::BufReader::new(file).lines())
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}
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// Function to read json from file into the vector
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fn read_json() -> Vec<User> {
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// Create path to file
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let path = Path::new("users.json");
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let display = path.display();
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let mut users: Vec<User> = Vec::new(); // Create an empty vector of users
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// Read through the lines and append them to the array
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if let Ok(lines) = read_lines(&path) {
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for line in lines {
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if let Ok(user) = line {
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info!("read {} from json file {}", display, &user);
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// Parse line from file into a data structure
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let user: User = serde_json::from_str(&user).unwrap();
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users.push(user);
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}
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}
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}
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return users;
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}
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// Function to append the last value of the users vector to the file
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fn append_json(users_list: &Vec<User>) -> Result<()> {
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// Create a file to write to
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let path = Path::new("users.json");
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let display = path.display();
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let mut file = match OpenOptions::new()
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.write(true)
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.create(true)
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.append(true)
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.open(&path){
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Err(why) => panic!("couldn't create {}: {}", display, why),
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Ok(file) => file,
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};
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// Serialize the last user value
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let users_json = serde_json::to_string(&users_list[users_list.len()-1])?;
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// Write to the file
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match file.write_all(users_json.as_bytes()) {
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Err(why) => panic!("couldn't write to {}: {}", display, why),
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Ok(_) => info!("succesfully wrote to {}", display),
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};
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// Add newline
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match file.write_all("\n".as_bytes()) {
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Err(why) => panic!("couldn't write to {}: {}", display, why),
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Ok(_) => info!("succesfully wrote to {}", display),
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};
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Ok(())
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}
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// Function to write whole vector of users to file
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fn write_json(users_list: &Vec<User>) -> Result<()> {
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// Create a file to write to
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let path = Path::new("users.json");
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let display = path.display();
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let mut file = match OpenOptions::new()
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.write(true)
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.create(true)
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.open(&path){
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Err(why) => panic!("couldn't create {}: {}", display, why),
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Ok(file) => file,
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};
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let mut users_json = String::new();
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for i in 0..users_list.len() {
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// Serialize the users
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users_json += &serde_json::to_string(&users_list[i])?;
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if i <= users_list.len()-2 { // don't append newline if it's the last element
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users_json += "\n";
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}
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}
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// Write to the file
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match file.write_all(users_json.as_bytes()) {
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Err(why) => panic!("couldn't write to {}: {}", display, why),
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Ok(_) => info!("succesfully wrote to {}", display),
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};
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Ok(())
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}
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*/
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// Post request to register a user and pin
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#[post("/api/register/<name>/<pin>/<pronouns>")]
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pub fn register_user(name: &str, pin: i32, pronouns: &str) -> String {
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let mut users: Vec<User> = read_json(); // Create an array of users out of parsed json
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for i in &users { // loop through elements of the vector
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if i.name == name.to_lowercase() {
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warn!("Cannot create user {}! User is already in system.", i.name);
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return "User already exists!".to_string();
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};
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};
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let pin_hashed = sha1::Sha1::from(&pin.to_string()).digest().to_string(); // hash the pin
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users.push( User {
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name: name.to_string().to_lowercase(),
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pin_hashed: pin_hashed,
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pronouns: pronouns.to_string().to_lowercase(),
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sessionToken: "NULL".to_string()
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}); // append the user to the vec
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// append to the json file
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match append_json(&users) {
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Err(why) => panic!("couldn't append json: {}", why),
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Ok(()) => info!("Succesfully appended to json"),
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};
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info!("succesfully created user {} with pin hash {}", users[users.len()-1].name.to_string(), users[users.len()-1].pin_hashed);
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return format!("User {} registered with pin hash: {}", users[users.len()-1].name.to_string().to_lowercase(), users[users.len()-1].pin_hashed);
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}
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// Check if pin matches user
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#[get("/api/users/<name>/<pin>")]
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pub fn check_pin(name: &str, pin: i32) -> String {
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let users: Vec<User> = read_json();
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let hashed_pin_input = sha1::Sha1::from(&pin.to_string()).digest().to_string();
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for i in &users { // loop through the vector
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if i.name == name.to_lowercase() {
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if i.pin_hashed == hashed_pin_input {
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info!("pin correct for user {}", i.name);
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return "pin matches".to_string();
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} else {
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warn!("pin incorrect for user {}", i.name);
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return "Incorrect pin".to_string();
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};
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};
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};
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warn!("cannot check pin for user {} as they do not exist", name.to_string().to_lowercase());
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return format!("User {} does not exist.", name.to_string().to_lowercase());
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}
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// Change a users pin/name
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#[post("/api/users/change/<name>/<pin>/<new_name>/<new_pin>")]
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pub fn change(name: &str, pin: i32, new_name: &str, new_pin: i32) -> String {
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let mut users: Vec<User> = read_json();
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let hashed_pin_input = sha1::Sha1::from(&pin.to_string()).digest().to_string();
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// Loop over elements in vector
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for i in 0..users.len() {
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if users[i].name == name.to_lowercase() { // make sure name exists
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if users[i].pin_hashed == hashed_pin_input { // check if pin is correct
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// Check wether to change name or name+pin
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if users[i].name == new_name.to_lowercase() {
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// check if new name already exists
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users[i].pin_hashed = sha1::Sha1::from(&new_pin.to_string()).digest().to_string();
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match write_json(&users) {
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Err(why) => panic!("Cannot write to json! {}", why),
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Ok(()) => info!("succesfully wrote to json file"),
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}
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info!("Changed pin of {}", name.to_string().to_lowercase());
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return format!("User {}'s new pin hash is {}.", name.to_string().to_lowercase(), users[i].pin_hashed);
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} else {
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// check if new name already exists
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for n in &users {
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if n.name == new_name.to_lowercase() {
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warn!("Could not change name of {} to {}, as new name is already taken.", name.to_lowercase(), new_name.to_lowercase());
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return format!("New name {} is already taken!", new_name.to_lowercase());
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}
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}
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users[i].name = new_name.to_string().to_lowercase();
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users[i].pin_hashed = sha1::Sha1::from(&new_pin.to_string()).digest().to_string();
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match write_json(&users) {
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Err(why) => panic!("couldn't write to json file! {}", why),
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Ok(()) => info!("succesfully wrote to json file"),
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}
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info!("Changed name of {} to {}. New pin hash is {}", name.to_string(), users[i].name.to_string(), users[i].pin_hashed.to_string());
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return format!("User previously known as {} is now {}. Pin hash, if different, is {}", name.to_string(), users[i].name.to_string(), users[i].pin_hashed.to_string());
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}
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} else {
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warn!("Incorrect pin given for user {}!", name.to_string());
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return format!("Incorrect pin for user {}!", name.to_string());
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}
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}
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}
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warn!("User {} not found, could not change pin and/or name.", name.to_string());
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return format!("User {} not found.", name.to_string());
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}
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#[get("/api/users/<name>")]
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pub fn get_user(name: &str) -> String {
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let users: Vec<User> = read_json();
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let found_user = users.iter().filter(|u| u.name == name.to_lowercase()).next();
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match found_user {
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Some(user) => format!("User {}", &user.name),
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None => "User does not exist".to_string(),
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}
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}
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/* Get data about a user */
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#[get("/api/about/name/<name>")]
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pub fn get_user_name(name: &str) -> String {
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let users: Vec<User> = read_json();
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let found_user = users.iter().filter(|u| u.name == name.to_lowercase()).next();
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match found_user {
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Some(user) => user.name.to_string(),
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None => "NULL".to_string(),
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}
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}
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#[get("/api/about/pronouns/<name>")]
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pub fn get_user_pronouns(name: &str) -> String {
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let users: Vec<User> = read_json();
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let found_user = users.iter().filter(|u| u.name == name.to_lowercase()).next();
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match found_user {
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Some(user) => user.pronouns.to_string(),
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None => "NULL".to_string(),
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}
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}
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