67 lines
2.0 KiB
D
67 lines
2.0 KiB
D
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module auth.dao;
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import handy_httpd.components.optional;
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import auth.model;
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interface UserRepository {
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Optional!User findByUsername(string username);
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User createUser(string username, string passwordHash);
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void deleteByUsername(string username);
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}
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/**
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* User implementation that stores each user's data in a separate directory.
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*/
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class FileSystemUserRepository : UserRepository {
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import std.path;
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import std.file;
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import std.json;
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private string usersDir;
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this(string usersDir = "users") {
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this.usersDir = usersDir;
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}
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Optional!User findByUsername(string username) {
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if (
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!validateUsername(username) ||
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!exists(getUserDir(username)) ||
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!exists(getUserDataFile(username))
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) {
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return Optional!User.empty;
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}
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JSONValue userObj = parseJSON(readText(getUserDataFile(username)));
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return Optional!User.of(User(
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username,
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userObj.object["passwordHash"].str
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));
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}
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User createUser(string username, string passwordHash) {
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if (!validateUsername(username)) throw new Exception("Invalid username");
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if (exists(getUserDir(username))) throw new Exception("User already exists.");
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JSONValue userObj = JSONValue.emptyObject;
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userObj.object["passwordHash"] = JSONValue(passwordHash);
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string jsonStr = userObj.toPrettyString();
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if (!exists(this.usersDir)) mkdir(this.usersDir);
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mkdir(getUserDir(username));
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std.file.write(getUserDataFile(username), cast(ubyte[]) jsonStr);
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return User(username, passwordHash);
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}
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void deleteByUsername(string username) {
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if (validateUsername(username) && exists(getUserDir(username))) {
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rmdirRecurse(getUserDir(username));
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}
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}
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private string getUserDir(string username) {
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return buildPath(this.usersDir, username);
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}
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private string getUserDataFile(string username) {
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return buildPath(this.usersDir, username, "user-data.json");
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}
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}
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