const validate = require("./form_validation");
const core = require("./core");
const settings = require("../settings");

async function registerUser(username, password) {
  // Get current and relevant settings
  const active_settings = settings.getSettings();
  const form_valid = await validate.userRegistration(username, password); // Check form for errors

  // Set variables for easy reading
  const registration_allowed = active_settings.ACCOUNT_REGISTRATION;
  const setup_complete = active_settings.SETUP_COMPLETE;

  if (!registration_allowed && setup_complete) return { success: false, message: "Registration is disabled" }; // Registration disabled
  if (!form_valid.success) return form_valid; // Registration details did not validate

  // Does a user using that username exist already?
  const existing_user = await core.getUser({ username: username });
  if (existing_user.success) return { success: false, message: "Username is taken" };

  // Register the user in the database
  const role = setup_complete ? undefined : "ADMIN";
  const registration_status = await core.registerUser(username, password, { role: role });

  if (registration_status.success) return registration_status;
  else return registration_status;
}

async function loginUser(username, password) {
  // Get the user by username
  const existing_user = await core.getUser({ username: username });

  // Check for errors or problems
  if (!existing_user.success) return { success: false, message: "User does not exist" };
  if (existing_user.role === "LOCKED") return { success: false, message: "Account is locked: Contact your administrator" };
  return { success: true, data: { username: existing_user.data.username, id: existing_user.data.id, password: existing_user.data.password } };
}

async function getBlogList({ id, visibility, owner_id, raw } = {}, { page = 0, limit = 10 } = {}) {
  const blog_list = await core.getBlogList({ id: id, visibility: visibility, owner_id: owner_id, raw: raw }, { page: page, limit: limit });
  return blog_list;
}

async function getUser({ id } = {}) {
  return await core.getUser({ id: id });
}

async function postBlog(blog_post, owner_id) {
  return await core.postBlog(blog_post, owner_id);
}
async function deleteBlog(blog_id, owner_id) {
  return await core.deleteBlog(blog_id, owner_id);
}
async function updateBlog(blog_post, requester_id) {
  return await core.updateBlog(blog_post, requester_id);
}
async function deleteImage(image_data, requester_id) {
  return await core.deleteImage(image_data, requester_id);
}
module.exports = { registerUser, loginUser, postBlog, getBlogList, deleteBlog, updateBlog, deleteImage, getUser };