# SPDX-License-Identifier: Apache-2.0
# Copyright (C) 2021 OKTET Labs Ltd. All rights reserved.

#
# Class DiaryEnv for Diary Management Application.
#

require 'singleton'
require_relative 'ldap_record'
require_relative 'diary_datamapper'

class DiaryEnv
    include Singleton

    DB_HOST = "localhost"
    DB_USERNAME = "diary"
    DB_PASSWORD = "diary_pass"
    DB_DATABASE = "diary"

    LDAP_HOST = 'ldap.example.com'
    LDAP_PORT = 389
    LDAP_ROOT = "ou=People,dc=example,dc=com"
    LDAP_VER = 3
    LDAP_BIND_DN = ""
    LDAP_BIND_PW = ""

    HOME_ORGANIZATION = "Example ORG"
    HOME_OU = "Employees"

    SMTP_HOST = 'mail.example.com'
    SMTP_FROM = 'diary@example.com'

    # Maximum age of diary entry (in days) to accept (approval mode only)
    DIARY_MAX_AGE = 2

    def initialize
        @confirmation = Array.new
        Person.setup(:host => LDAP_HOST,
                     :port => LDAP_PORT,
                     :root => LDAP_ROOT,
                     :ver => LDAP_VER,
                     :binddn => LDAP_BIND_DN,
                     :bindpw => LDAP_BIND_PW,
                     :key => "uid")
        Person.set_local(HOME_ORGANIZATION, HOME_OU)
        DataMapper.setup(:adapter =>  "Mysql2",
                         :database => DB_DATABASE,
                         :host => DB_HOST,
                         :username => DB_USERNAME,
                         :password => DB_PASSWORD)
        cmd = "SELECT nick FROM director"
        @director = []
        DataMapper.database.query(cmd, as: :hash, symbolize_keys: false).each do |q|
            raise "'Director' table is not filled" unless
                q and name = q.fetch('nick')
            @director.push(Person.new(name))
        end
    end

    def user=(name)
        @user = Person.find(name)
        raise "Invalid user #{name}" unless @user
        @policy = @user.employee? ? EmployeePolicy.new(@user) :
                                    CustomerPolicy.new(@user)
    end

    def confirmation=(value)
        if value.is_a? Array
            @confirmation = value
        end
    end

    attr_reader :director, :confirmation, :policy, :user
    def self.director
        instance.director
    end
    def self.confirmed?(token)
        instance.confirmation.include?(token)
    end
end