UsersController.swift

import Foundation
import Vapor
import HTTP
import AuthProvider
import JWT

final class ExampleUsersController {
    private let droplet: Droplet
    
    init(droplet: Droplet) {
        self.droplet = droplet
    }
    
    func addRoutes() {
        let user = droplet.grouped(["user"])
        user.get("all", handler: index)
        user.post("create", handler: create)
        user.post("login", handler: login)
    }
    
    func index(req: Request) throws -> ResponseRepresentable {
        return try ExampleUser.all().makeJSON()
    }
    
    func login(request: Request) throws -> ResponseRepresentable {
        if let username = request.data[ExampleUser.nameKey]?.string, let password = request.data[ExampleUser.passwordKey]?.string {
            let credentials = Password(username: username, password: password)
            do {
                let user = try ExampleUser.authenticate(credentials)
                let token = try Token.createJwt(from: user)
                return try JSON(node: ["username": user.username, "token": token])
            } catch let error {
                return try JSON(node: ["error": error.localizedDescription])
            }
        }
        else { return try JSON(node: ["error": LoginSignupError.missingField.description])}
    }
    
    func create(request: Request) throws -> ResponseRepresentable {
        if let username = request.data[ExampleUser.nameKey]?.string, let confirmPassword = request.data[ExampleUser.confirmPasswordKey]?.string, let password = request.data[ExampleUser.passwordKey]?.string {
            if confirmPassword != password {
                return try JSON(node: ["error": LoginSignupError.passwordMismatch.description])
            }
            do {
                let passwordHashed = try ExampleUser.hasher.make(password)
                let user = try ExampleUser(username: username, password: passwordHashed)
                 try user.save()
                return user
            } catch let error { return try JSON(node: ["error": error])}
        }
        else { return try JSON(node: ["error": LoginSignupError.missingField.description]) }
    }
    
}