#The MIT License (MIT)
#
#Copyright (c) 2016 - 2026 rick barrette
#
#Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
#
#The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
#
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

# This controller class will handle map management
class CustomersController < ApplicationController

  include AuthHelper
  helper :issues
  helper :journals
  helper :projects
  helper :custom_fields
  helper :issue_relations
  helper :watchers
  helper :attachments
  helper :queries
  include QueriesHelper
  helper :repositories
  helper :sort
  include SortHelper
  helper :timelog

  before_action :add_customer, only: :new
  before_action :view_customer, except: [:new, :view]
  skip_before_action :verify_authenticity_token, :check_if_login_required, only: [:view]

  autocomplete :customer, :name, full: true, extra_data: [:id]

  def allowed_params
    params.require(:customer).permit(:name, :email, :primary_phone, :mobile_phone, :phone_number, :notes)
  end

  # getter method for a customer's invoices
  # used for customer autocomplete field / issue form
  def filter_invoices_by_customer
    @filtered_invoices = Invoice.all.where(customer_id: params[:selected_customer])
  end

  # getter method for a customer's estimates
  # used for customer autocomplete field / issue form
  def filter_estimates_by_customer
    @filtered_estimates = Estimate.all.where(customer_id: params[:selected_customer])
  end

  # display a list of all customers
  def index
    if params[:search]
      @customers = Customer.search(params[:search]).order(:name).paginate(page: params[:page])
      if only_one_non_zero?(@customers)
        redirect_to @customers.first
      end
    end
  end

  # initialize a new customer
  def new
    @customer = Customer.new
  end

  # create a new customer
  def create
    @customer = Customer.new(allowed_params)
    @customer.save
    log "Customer ##{@customer.id} created successfully."
    flash[:notice] = t :notice_customer_created
    redirect_to @customer
  rescue => e
    log "Failed to create customer: #{e.message}"
    flash[:error] = e.message
    redirect_to new_customer_path
  end

  # display a specific customer
  def show
    @customer = Customer.find_by_id(params[:id])
    return render_404 unless @customer

    @open_issues = @customer.issues
      .joins(:status)
      .includes(:status, :project, :tracker, :priority)
      .where(issue_statuses: { is_closed: false })
      .order(id: :desc)

    @closed_issues = @customer.issues
      .joins(:status)
      .includes(:status, :project, :tracker, :priority)
      .where(issue_statuses: { is_closed: true })
      .order(id: :desc)

    @hours = TimeEntry
      .joins(:issue)
      .where(issues: { id: @open_issues.select(:id) })
      .sum(:hours)

    @closed_hours = TimeEntry
      .joins(:issue)
      .where(issues: { id: @closed_issues.select(:id) })
      .sum(:hours)

  rescue => e
    Rails.logger.error "Failed to load customer ##{params[:id]}: #{e.message}\n#{e.backtrace.join("\n")}"
    flash[:error] = e.message
    render_404
  end

  # return an HTML form for editing a customer
  def edit
    @customer = Customer.find_by_id(params[:id])
    return render_404 unless @customer
  rescue => e
    log "Failed to edit customer"
    flash[:error] = e.message
    render_404
  end

  # update a specific customer
  def update
    @customer = Customer.find_by_id(params[:id])
    @customer.update(allowed_params)
    flash[:notice] = t :notice_customer_updated
    redirect_to @customer
  rescue => e
    log "Failed to update customer: #{e.message}"
    flash[:error] = e.message
    redirect_to edit_customer_path
  end

  # creates new customer view tokens, removes expired tokens & redirects to newly created customer view with new token.
  def share
    issue = Issue.find(params[:id])
    token = issue.share_token
    redirect_to view_path(token.token)
  rescue ActiveRecord::RecordNotFound
    flash[:error] = t(:notice_issue_not_found)
    render_404
  end
  
  # displays an issue for a customer with a provided security CustomerToken
  def view
    User.current = User.anonymous

    # Load only active, non-expired token
    @token = CustomerToken.active.find_by(token: params[:token])
    return render_403 unless @token

    # Load associated issue
    @issue = @token.issue
    return render_403 unless @issue

    # Optional: enforce token belongs to the issue's customer
    return render_403 unless @issue.customer_id == @token.issue.customer_id

    # Store token in session for subsequent requests if needed
    session[:token] = @token.token

    load_issue_data
  rescue ActiveRecord::RecordNotFound
    render_403
  end

  private

  def load_issue_data
    @journals = @issue.journals.preload(:details).preload(user: :email_address).reorder(:created_on, :id).to_a

    @journals.each_with_index { |j, i| j.indice = i + 1 }
    @journals.reject!(&:private_notes?) unless User.current.allowed_to?(:view_private_notes, @issue.project)
    Journal.preload_journals_details_custom_fields(@journals)
    @journals.select! { |journal| journal.notes? || journal.visible_details.any? }
    @journals.reverse! if User.current.wants_comments_in_reverse_order?

    @changesets = @issue.changesets.visible.preload(:repository, :user).to_a
    @changesets.reverse! if User.current.wants_comments_in_reverse_order?

    @relations = @issue.relations.select { |r| r.other_issue(@issue)&.visible? }
    @allowed_statuses = @issue.new_statuses_allowed_to(User.current)
    @priorities = IssuePriority.active
    @time_entry = TimeEntry.new(issue: @issue, project: @issue.project)
    @relation   = IssueRelation.new
  end

  # redmine permission - add customers
  def add_customer
    global_check_permission(:add_customers)
  end

  # redmine permission - view customers
  def view_customer
    global_check_permission(:view_customers)
  end

  # checks to see if there is only one item  in an array
  # @return true if array only has one item
  def only_one_non_zero?( array )
    found_non_zero = false
    array.each do |val|
      if val!=0
        return false if found_non_zero
        found_non_zero = true
      end
    end
    found_non_zero
  end

  # format a quickbooks address to a human readable string
  def address_to_s(address)
    return if address.nil?

    lines = [
      address.line1,
      address.line2,
      address.line3,
      address.line4,
      address.line5
    ].compact_blank

    city_line = [
      address.city,
      address.country_sub_division_code,
      address.postal_code
    ].compact_blank.join(" ")

    lines << city_line unless city_line.blank?

    lines.join("\n")
  end

  def log(msg)
    Rails.logger.info "[CustomersController] #{msg}"
  end

end
