/* global
  AT: false,
  AccountsTemplates: false
*/
"use strict";

// Initialization
AT.prototype.init = function() {
  console.warn("[AccountsTemplates] There is no more need to call AccountsTemplates.init()! Simply remove the call ;-)");
};

AT.prototype._init = function() {
  if (this._initialized) {
    return;
  }

  // Checks there is at least one account service installed
  if (!Package["accounts-password"] && (!Accounts.oauth || Accounts.oauth.serviceNames().length === 0)) {
    throw Error("AccountsTemplates: You must add at least one account service!");
  }

  // A password field is strictly required
  var password = this.getField("password");
  if (!password) {
    throw Error("A password field is strictly required!");
  }

  if (password.type !== "password") {
    throw Error("The type of password field should be password!");
  }

  // Then we can have "username" or "email" or even both of them
  // but at least one of the two is strictly required
  var username = this.getField("username");
  var email = this.getField("email");

  if (!username && !email) {
    throw Error("At least one field out of username and email is strictly required!");
  }

  if (username && !username.required) {
    throw Error("The username field should be required!");
  }

  if (email) {
    if (email.type !== "email") {
      throw Error("The type of email field should be email!");
    }

    if (username) {
      // username and email
      if (username.type !== "text") {
        throw Error("The type of username field should be text when email field is present!");
      }
    } else {
      // email only
      if (!email.required) {
        throw Error("The email field should be required when username is not present!");
      }
    }
  } else {
    // username only
    if (username.type !== "text" && username.type !== "tel") {
      throw Error("The type of username field should be text or tel!");
    }
  }

  // Possibly publish more user data in order to be able to show add/remove
  // buttons for 3rd-party services
  if (this.options.showAddRemoveServices) {
    // Publish additional current user info to get the list of registered services
    // XXX TODO: use
    // Accounts.addAutopublishFields({
    //   forLoggedInUser: ['services.facebook'],
    //   forOtherUsers: [],
    // })
    // ...adds only user.services.*.id
    Meteor.publish("userRegisteredServices", function() {
      var userId = this.userId;
      return Meteor.users.find(userId, {fields: {services: 1}});
      /*
      if (userId) {
        var user = Meteor.users.findOne(userId);
        var services_id = _.chain(user.services)
          .keys()
          .reject(function(service) {return service === "resume";})
          .map(function(service) {return "services." + service + ".id";})
          .value();
        var projection = {};
        _.each(services_id, function(key) {projection[key] = 1;});
        return Meteor.users.find(userId, {fields: projection});
      }
      */
    });
  }

  // Security stuff
  if (this.options.overrideLoginErrors) {
    Accounts.validateLoginAttempt(function(attempt) {
      if (attempt.error) {
        var reason = attempt.error.reason;
        if (reason === "User not found" || reason === "Incorrect password") {
          throw new Meteor.Error(403, AccountsTemplates.texts.errors.loginForbidden);
        }
      }
      return attempt.allowed;
    });
  }

  if (this.options.sendVerificationEmail && this.options.enforceEmailVerification) {
    Accounts.validateLoginAttempt(function(attempt) {
      if (!attempt.allowed) {
        return false;
      }

      if (attempt.type !== "password" || attempt.methodName !== "login") {
        return attempt.allowed;
      }

      var user = attempt.user;
      if (!user) {
        return attempt.allowed;
      }

      var ok = true;
      var loginEmail = attempt.methodArguments[0].user.email.toLowerCase();
      if (loginEmail) {
        var email = _.filter(user.emails, function(obj) {
          return obj.address.toLowerCase() === loginEmail;
        });
        if (!email.length || !email[0].verified) {
          ok = false;
        }
      } else {
        // we got the username, lets check there's at lease one verified email
        var emailVerified = _.chain(user.emails)
        .pluck('verified')
        .any()
        .value();

        if (!emailVerified) {
          ok = false;
        }
      }
      if (!ok) {
        throw new Meteor.Error(401, AccountsTemplates.texts.errors.verifyEmailFirst);
      }

      return attempt.allowed;
    });
  }

  //Check that reCaptcha secret keys are available
  if (this.options.showReCaptcha) {
    var atSecretKey = AccountsTemplates.options.reCaptcha && AccountsTemplates.options.reCaptcha.secretKey;
    var settingsSecretKey = Meteor.settings.reCaptcha && Meteor.settings.reCaptcha.secretKey;

    if (!atSecretKey && !settingsSecretKey) {
      throw new Meteor.Error(401, "User Accounts: reCaptcha secret key not found! Please provide it or set showReCaptcha to false." );
    }
  }

  // Marks AccountsTemplates as initialized
  this._initialized = true;
};

AccountsTemplates = new AT();

// Client side account creation is disabled by default:
// the methos ATCreateUserServer is used instead!
// to actually disable client side account creation use:
//
//    AccountsTemplates.config({
//        forbidClientAccountCreation: true
//    });

Accounts.config({
  forbidClientAccountCreation: true
});

// Initialization
Meteor.startup(function() {
  AccountsTemplates._init();
});