# == Schema Information
#
# Table name: procedures
#
#  id                                  :integer          not null, primary key
#  aasm_state                          :string           default("brouillon")
#  allow_expert_review                 :boolean          default(TRUE), not null
#  api_entreprise_token                :string
#  ask_birthday                        :boolean          default(FALSE), not null
#  auto_archive_on                     :date
#  cadre_juridique                     :string
#  cerfa_flag                          :boolean          default(FALSE)
#  cloned_from_library                 :boolean          default(FALSE)
#  closed_at                           :datetime
#  declarative_with_state              :string
#  description                         :string
#  direction                           :string
#  duree_conservation_dossiers_dans_ds :integer
#  duree_conservation_dossiers_hors_ds :integer
#  durees_conservation_required        :boolean          default(TRUE)
#  euro_flag                           :boolean          default(FALSE)
#  for_individual                      :boolean          default(FALSE)
#  hidden_at                           :datetime
#  juridique_required                  :boolean          default(TRUE)
#  libelle                             :string
#  lien_demarche                       :string
#  lien_notice                         :string
#  lien_site_web                       :string
#  monavis_embed                       :text
#  organisation                        :string
#  path                                :string           not null
#  published_at                        :datetime
#  routing_criteria_name               :text             default("Votre ville")
#  test_started_at                     :datetime
#  unpublished_at                      :datetime
#  web_hook_url                        :string
#  whitelisted_at                      :datetime
#  created_at                          :datetime         not null
#  updated_at                          :datetime         not null
#  canonical_procedure_id              :bigint
#  draft_revision_id                   :bigint
#  parent_procedure_id                 :bigint
#  published_revision_id               :bigint
#  service_id                          :bigint
#

class Procedure < ApplicationRecord
  self.ignored_columns = ['archived_at', 'csv_export_queued', 'xlsx_export_queued', 'ods_export_queued']

  include ProcedureStatsConcern

  include Discard::Model
  self.discard_column = :hidden_at
  default_scope -> { kept }

  MAX_DUREE_CONSERVATION = 36
  MAX_DUREE_CONSERVATION_EXPORT = 3.hours

  has_many :revisions, -> { order(:id) }, class_name: 'ProcedureRevision', inverse_of: :procedure
  belongs_to :draft_revision, class_name: 'ProcedureRevision', optional: false
  belongs_to :published_revision, class_name: 'ProcedureRevision', optional: true
  has_many :deleted_dossiers, dependent: :destroy

  has_many :published_types_de_champ, through: :published_revision, source: :types_de_champ
  has_many :published_types_de_champ_private, through: :published_revision, source: :types_de_champ_private
  has_many :draft_types_de_champ, through: :draft_revision, source: :types_de_champ
  has_many :draft_types_de_champ_private, through: :draft_revision, source: :types_de_champ_private

  has_many :all_types_de_champ, -> { joins(:procedure).where('types_de_champ.revision_id != procedures.draft_revision_id') }, through: :revisions, source: :types_de_champ
  has_many :all_types_de_champ_private, -> { joins(:procedure).where('types_de_champ.revision_id != procedures.draft_revision_id') }, through: :revisions, source: :types_de_champ_private

  has_many :experts_procedures, dependent: :destroy
  has_many :experts, through: :experts_procedures

  has_one :module_api_carto, dependent: :destroy
  has_one :attestation_template, dependent: :destroy

  belongs_to :parent_procedure, class_name: 'Procedure', optional: true
  belongs_to :canonical_procedure, class_name: 'Procedure', optional: true
  belongs_to :service, optional: true

  def active_revision
    brouillon? ? draft_revision : published_revision
  end

  def types_de_champ
    brouillon? ? draft_types_de_champ : published_types_de_champ
  end

  def types_de_champ_private
    brouillon? ? draft_types_de_champ_private : published_types_de_champ_private
  end

  def types_de_champ_for_export
    if brouillon?
      draft_types_de_champ
    else
      all_types_de_champ
        .uniq
        .reject(&:exclude_from_export?)
        .filter(&:active_revision?)
        .group_by(&:stable_id).values.map do |types_de_champ|
          types_de_champ.sort_by(&:created_at).last
        end
    end
  end

  def types_de_champ_private_for_export
    if brouillon?
      draft_types_de_champ_private
    else
      all_types_de_champ_private
        .uniq
        .reject(&:exclude_from_export?)
        .filter(&:active_revision?)
        .group_by(&:stable_id).values.map do |types_de_champ|
          types_de_champ.sort_by(&:created_at).last
        end
    end
  end

  has_many :administrateurs_procedures
  has_many :administrateurs, through: :administrateurs_procedures, after_remove: -> (procedure, _admin) { procedure.validate! }
  has_many :groupe_instructeurs, dependent: :destroy
  has_many :instructeurs, through: :groupe_instructeurs

  # This relationship is used in following dossiers through. We can not use revisions relationship
  # as order scope introduces invalid sql in some combinations.
  has_many :unordered_revisions, class_name: 'ProcedureRevision', inverse_of: :procedure, dependent: :destroy
  has_many :dossiers, through: :unordered_revisions, dependent: :restrict_with_exception

  has_one :initiated_mail, class_name: "Mails::InitiatedMail", dependent: :destroy
  has_one :received_mail, class_name: "Mails::ReceivedMail", dependent: :destroy
  has_one :closed_mail, class_name: "Mails::ClosedMail", dependent: :destroy
  has_one :refused_mail, class_name: "Mails::RefusedMail", dependent: :destroy
  has_one :without_continuation_mail, class_name: "Mails::WithoutContinuationMail", dependent: :destroy

  has_one :defaut_groupe_instructeur, -> { order(:id) }, class_name: 'GroupeInstructeur', inverse_of: :procedure

  has_one_attached :logo
  has_one_attached :notice
  has_one_attached :deliberation

  scope :brouillons,            -> { where(aasm_state: :brouillon) }
  scope :publiees,              -> { where(aasm_state: :publiee) }
  scope :closes,                -> { where(aasm_state: [:close, :depubliee]) }
  scope :publiees_ou_closes,    -> { where(aasm_state: [:publiee, :close, :depubliee]) }
  scope :by_libelle,            -> { order(libelle: :asc) }
  scope :created_during,        -> (range) { where(created_at: range) }
  scope :cloned_from_library,   -> { where(cloned_from_library: true) }
  scope :declarative,           -> { where.not(declarative_with_state: nil) }

  scope :discarded_expired, -> do
    with_discarded
      .discarded
      .where('hidden_at < ?', 1.month.ago)
  end

  scope :for_api, -> {
    includes(
      :administrateurs,
      :module_api_carto,
      published_revision: [
        :types_de_champ_private,
        :types_de_champ
      ],
      draft_revision: [
        :types_de_champ_private,
        :types_de_champ
      ]
    )
  }

  enum declarative_with_state: {
    en_instruction:  'en_instruction',
    accepte:         'accepte'
  }

  scope :for_api_v2, -> {
    includes(:draft_revision, :published_revision, administrateurs: :user)
  }

  validates :libelle, presence: true, allow_blank: false, allow_nil: false
  validates :description, presence: true, allow_blank: false, allow_nil: false
  validates :administrateurs, presence: true
  validates :lien_site_web, presence: true, if: :publiee?
  validate :validate_for_publication, on: :publication
  validate :check_juridique
  validates :path, presence: true, format: { with: /\A[a-z0-9_\-]{3,200}\z/ }, uniqueness: { scope: [:path, :closed_at, :hidden_at, :unpublished_at], case_sensitive: false }
  validates :duree_conservation_dossiers_dans_ds, allow_nil: false, numericality: { only_integer: true, greater_than_or_equal_to: 1, less_than_or_equal_to: MAX_DUREE_CONSERVATION }
  validates :duree_conservation_dossiers_hors_ds, allow_nil: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
  validates_with MonAvisEmbedValidator
  validates :notice, content_type: [
    "application/msword",
    "application/pdf",
    "application/vnd.ms-powerpoint",
    "application/vnd.oasis.opendocument.presentation",
    "application/vnd.oasis.opendocument.text",
    "application/vnd.openxmlformats-officedocument.presentationml.presentation",
    "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    "image/jpeg",
    "image/jpg",
    "image/png",
    "text/plain"
  ], size: { less_than: 20.megabytes }

  validates :deliberation, content_type: [
    "application/msword",
    "application/pdf",
    "application/vnd.oasis.opendocument.text",
    "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    "image/jpeg",
    "image/jpg",
    "image/png",
    "text/plain"
  ], size: { less_than: 20.megabytes }

  validates :logo, content_type: ['image/png', 'image/jpg', 'image/jpeg'], size: { less_than: 5.megabytes }
  validates :api_entreprise_token, jwt_token: true, allow_blank: true

  before_save :update_juridique_required
  after_initialize :ensure_path_exists
  before_save :ensure_path_exists
  after_create :ensure_default_groupe_instructeur

  include AASM

  aasm whiny_persistence: true do
    state :brouillon, initial: true
    state :publiee
    state :close
    state :depubliee

    event :publish, before: :before_publish, after: :after_publish do
      transitions from: :brouillon, to: :publiee
      transitions from: :close, to: :publiee
      transitions from: :depubliee, to: :publiee
    end

    event :close, after: :after_close do
      transitions from: :publiee, to: :close
    end

    event :unpublish, after: :after_unpublish do
      transitions from: :publiee, to: :depubliee
    end
  end

  def publish_or_reopen!(administrateur)
    Procedure.transaction do
      if brouillon?
        reset!
      end

      other_procedure = other_procedure_with_path(path)
      if other_procedure.present? && administrateur.owns?(other_procedure)
        other_procedure.unpublish!
        publish!(other_procedure.canonical_procedure || other_procedure)
      else
        publish!
      end
    end
  end

  def reset!
    if locked?
      raise "Can not reset a locked procedure."
    else
      groupe_instructeurs.each { |gi| gi.dossiers.destroy_all }
    end
  end

  def validate_for_publication
    old_attributes = self.slice(:aasm_state, :closed_at)
    self.aasm_state = :publiee
    self.closed_at = nil

    is_valid = validate

    self.attributes = old_attributes

    is_valid
  end

  def suggested_path(administrateur)
    if path_customized?
      return path
    end
    slug = libelle&.parameterize&.first(50)
    suggestion = slug
    counter = 1
    while !path_available?(administrateur, suggestion)
      counter = counter + 1
      suggestion = "#{slug}-#{counter}"
    end
    suggestion
  end

  def other_procedure_with_path(path)
    Procedure.publiees
      .where.not(id: self.id)
      .find_by(path: path)
  end

  def path_available?(administrateur, path)
    procedure = other_procedure_with_path(path)

    procedure.blank? || (administrateur.owns?(procedure) && canonical_procedure_child?(procedure))
  end

  def canonical_procedure_child?(procedure)
    !canonical_procedure || canonical_procedure == procedure || canonical_procedure == procedure.canonical_procedure
  end

  def locked?
    publiee? || close? || depubliee?
  end

  def accepts_new_dossiers?
    publiee? || brouillon?
  end

  def dossier_can_transition_to_en_construction?
    accepts_new_dossiers? || depubliee?
  end

  def expose_legacy_carto_api?
    module_api_carto&.use_api_carto? && module_api_carto&.migrated?
  end

  def declarative?
    declarative_with_state.present?
  end

  def declarative_accepte?
    declarative_with_state == Procedure.declarative_with_states.fetch(:accepte)
  end

  def self.declarative_attributes_for_select
    declarative_with_states.map do |state, _|
      [I18n.t("activerecord.attributes.#{model_name.i18n_key}.declarative_with_state/#{state}"), state]
    end
  end

  # Warning: dossier after_save build_default_champs must be removed
  # to save a dossier created from this method
  def new_dossier
    Dossier.new(
      revision: active_revision,
      champs: active_revision.build_champs,
      champs_private: active_revision.build_champs_private,
      groupe_instructeur: defaut_groupe_instructeur
    )
  end

  def path_customized?
    !path.match?(/[[:xdigit:]]{8}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{12}/)
  end

  def organisation_name
    service&.nom || organisation
  end

  def self.active(id)
    publiees.find(id)
  end

  def clone(admin, from_library)
    is_different_admin = !admin.owns?(self)

    populate_champ_stable_ids
    include_list = {
      attestation_template: [],
      draft_revision: {
        revision_types_de_champ: {
          type_de_champ: :types_de_champ
        },
        revision_types_de_champ_private: {
          type_de_champ: :types_de_champ
        }
      }
    }
    include_list[:groupe_instructeurs] = :instructeurs if !is_different_admin
    procedure = self.deep_clone(include: include_list, &method(:clone_attachments))
    procedure.path = SecureRandom.uuid
    procedure.aasm_state = :brouillon
    procedure.closed_at = nil
    procedure.unpublished_at = nil
    procedure.published_at = nil
    procedure.lien_notice = nil
    procedure.published_revision = nil
    procedure.draft_revision.procedure = procedure

    if is_different_admin
      procedure.administrateurs = [admin]
      procedure.api_entreprise_token = nil
    else
      procedure.administrateurs = administrateurs
    end

    procedure.initiated_mail = initiated_mail&.dup
    procedure.received_mail = received_mail&.dup
    procedure.closed_mail = closed_mail&.dup
    procedure.refused_mail = refused_mail&.dup
    procedure.without_continuation_mail = without_continuation_mail&.dup
    procedure.ask_birthday = false # see issue #4242

    procedure.cloned_from_library = from_library
    procedure.parent_procedure = self
    procedure.canonical_procedure = nil

    if from_library
      procedure.service = nil
    elsif self.service.present? && is_different_admin
      procedure.service = self.service.clone_and_assign_to_administrateur(admin)
    end

    procedure.save
    procedure.draft_types_de_champ.update_all(revision_id: procedure.draft_revision.id)
    procedure.draft_types_de_champ_private.update_all(revision_id: procedure.draft_revision.id)
    TypeDeChamp.where(parent: procedure.draft_types_de_champ.repetition + procedure.draft_types_de_champ_private.repetition).update_all(revision_id: procedure.draft_revision.id)

    if is_different_admin || from_library
      procedure.draft_types_de_champ.each { |tdc| tdc.options&.delete(:old_pj) }
    end

    procedure
  end

  def clone_attachments(original, kopy)
    if original.is_a?(TypeDeChamp)
      clone_attachment(:piece_justificative_template, original, kopy)
    elsif original.is_a?(Procedure)
      clone_attachment(:logo, original, kopy)
      clone_attachment(:notice, original, kopy)
      clone_attachment(:deliberation, original, kopy)
    end
  end

  def clone_attachment(attribute, original, kopy)
    original_attachment = original.send(attribute)
    if original_attachment.attached?
      kopy.send(attribute).attach({
        io: StringIO.new(original_attachment.download),
        filename: original_attachment.filename,
        content_type: original_attachment.content_type,
        # we don't want to run virus scanner on cloned file
        metadata: { virus_scan_result: ActiveStorage::VirusScanner::SAFE }
      })
    end
  end

  def whitelisted?
    whitelisted_at.present?
  end

  def total_dossier
    self.dossiers.state_not_brouillon.size
  end

  def export_filename(format)
    procedure_identifier = path || "procedure-#{id}"
    "dossiers_#{procedure_identifier}_#{Time.zone.now.strftime('%Y-%m-%d_%H-%M')}.#{format}"
  end

  def export(dossiers)
    ProcedureExportService.new(self, dossiers)
  end

  def to_csv(dossiers)
    export(dossiers).to_csv
  end

  def to_xlsx(dossiers)
    export(dossiers).to_xlsx
  end

  def to_ods(dossiers)
    export(dossiers).to_ods
  end

  def procedure_overview(start_date, groups)
    ProcedureOverview.new(self, start_date, groups)
  end

  def initiated_mail_template
    initiated_mail || Mails::InitiatedMail.default_for_procedure(self)
  end

  def received_mail_template
    received_mail || Mails::ReceivedMail.default_for_procedure(self)
  end

  def closed_mail_template
    closed_mail || Mails::ClosedMail.default_for_procedure(self)
  end

  def refused_mail_template
    refused_mail || Mails::RefusedMail.default_for_procedure(self)
  end

  def without_continuation_mail_template
    without_continuation_mail || Mails::WithoutContinuationMail.default_for_procedure(self)
  end

  def self.default_sort
    {
      'table' => 'self',
      'column' => 'id',
      'order' => 'desc'
    }
  end

  def whitelist!
    update_attribute('whitelisted_at', Time.zone.now)
  end

  def closed_mail_template_attestation_inconsistency_state
    # As an optimization, don’t check the predefined templates (they are presumed correct)
    if closed_mail.present?
      tag_present = closed_mail.body.to_s.include?("--lien attestation--")
      if attestation_template&.activated? && !tag_present
        :missing_tag
      elsif !attestation_template&.activated? && tag_present
        :extraneous_tag
      end
    end
  end

  def usual_traitement_time
    times = Traitement.includes(:dossier)
      .where(dossier: self.dossiers)
      .where.not('dossiers.en_construction_at' => nil, :processed_at => nil)
      .where(processed_at: 1.month.ago..Time.zone.now)
      .pluck('dossiers.en_construction_at', :processed_at)
      .map { |(en_construction_at, processed_at)| processed_at - en_construction_at }

    if times.present?
      times.percentile(90).ceil
    end
  end

  def populate_champ_stable_ids
    TypeDeChamp.where(procedure: self, stable_id: nil).find_each do |type_de_champ|
      type_de_champ.update_column(:stable_id, type_de_champ.id)
    end
  end

  def missing_steps
    result = []

    if service.nil?
      result << :service
    end

    if missing_instructeurs?
      result << :instructeurs
    end

    result
  end

  def process_dossiers!
    case declarative_with_state
    when Procedure.declarative_with_states.fetch(:en_instruction)
      dossiers
        .state_en_construction
        .find_each(&:passer_automatiquement_en_instruction!)
    when Procedure.declarative_with_states.fetch(:accepte)
      dossiers
        .state_en_construction
        .find_each(&:accepter_automatiquement!)
    end
  end

  def logo_url
    if logo.attached?
      Rails.application.routes.url_helpers.url_for(logo)
    else
      ActionController::Base.helpers.image_url(PROCEDURE_DEFAULT_LOGO_SRC)
    end
  end

  def missing_instructeurs?
    !AssignTo.exists?(groupe_instructeur: groupe_instructeurs)
  end

  def routee?
    groupe_instructeurs.count > 1
  end

  def can_be_deleted_by_administrateur?
    brouillon? || dossiers.state_instruction_commencee.empty?
  end

  def can_be_deleted_by_manager?
    kept? && can_be_deleted_by_administrateur?
  end

  def discard_and_keep_track!(author)
    if brouillon?
      reset!
    elsif publiee?
      close!
    end

    dossiers.each do |dossier|
      dossier.discard_and_keep_track!(author, :procedure_removed)
    end

    discard!
  end

  def restore(author)
    if discarded? && undiscard
      dossiers.with_discarded.discarded.find_each do |dossier|
        dossier.restore(author, true)
      end
    end
  end

  def flipper_id
    "Procedure;#{id}"
  end

  def api_entreprise_role?(role)
    APIEntrepriseToken.new(api_entreprise_token).role?(role)
  end

  def api_entreprise_token
    self[:api_entreprise_token].presence || Rails.application.secrets.api_entreprise[:key]
  end

  def api_entreprise_token_expired?
    APIEntrepriseToken.new(api_entreprise_token).expired?
  end

  def create_new_revision
    draft_revision.deep_clone(include: [:revision_types_de_champ, :revision_types_de_champ_private])
  end

  def dossiers_count_for_instructeur(instructeur)
    query = <<-EOF
  SELECT
      COUNT(*) FILTER ( WHERE "dossiers"."state" in ('en_construction', 'en_instruction') and "follows"."id" IS NULL and not "dossiers"."archived") AS a_suivre,
      COUNT(*) FILTER ( WHERE "dossiers"."state" in ('en_construction', 'en_instruction') and "follows"."instructeur_id" = :instructeur_id and not "dossiers"."archived" and "follows"."unfollowed_at" IS NULL) AS suivis,
      COUNT(*) FILTER ( WHERE "dossiers"."state" in ('accepte', 'refuse', 'sans_suite') and not "dossiers"."archived" ) AS termines,
      COUNT(*) FILTER ( WHERE "dossiers"."state" != 'brouillon' and not "dossiers"."archived" ) AS total,
      COUNT(*) FILTER ( WHERE "dossiers"."archived" ) AS archived
  FROM
      "dossiers"
  INNER JOIN
      "groupe_instructeurs"
          ON "dossiers"."groupe_instructeur_id" = "groupe_instructeurs"."id"
  INNER JOIN
      "assign_tos"
          ON "groupe_instructeurs"."id" = "assign_tos"."groupe_instructeur_id"
  INNER JOIN
      "procedures"
          ON "groupe_instructeurs"."procedure_id" = "procedures"."id"
  LEFT OUTER JOIN
      "follows"
          ON "follows"."dossier_id" = "dossiers"."id"
          AND "follows"."unfollowed_at" IS NULL
  WHERE
      "dossiers"."hidden_at" IS NULL
      AND "assign_tos"."instructeur_id" = :instructeur_id
      AND "procedures"."id" = :procedure_id
  GROUP BY
      groupe_instructeurs.procedure_id, procedures.libelle
    EOF

    sanitized_query = ActiveRecord::Base.sanitize_sql([
      query,
      instructeur_id: instructeur.id,
      procedure_id: self.id,
      now: Time.zone.now
    ])

    Procedure.connection.select_all(sanitized_query).first || { "a_suivre" => 0, "suivis" => 0, "termines" => 0, "total" => 0, "archived" => 0 }
  end

  private

  def before_publish
    update!(closed_at: nil, unpublished_at: nil)
  end

  def after_publish(canonical_procedure = nil)
    update!(published_at: Time.zone.now, canonical_procedure: canonical_procedure, draft_revision: create_new_revision, published_revision: draft_revision)
  end

  def after_close
    update!(closed_at: Time.zone.now)
  end

  def after_unpublish
    update!(unpublished_at: Time.zone.now)
  end

  def update_juridique_required
    self.juridique_required ||= (cadre_juridique.present? || deliberation.attached?)
    true
  end

  def check_juridique
    if juridique_required? && (cadre_juridique.blank? && !deliberation.attached?)
      errors.add(:cadre_juridique, " : veuillez remplir le texte de loi ou la délibération")
    end
  end

  def ensure_path_exists
    if self.path.blank?
      self.path = SecureRandom.uuid
    end
  end

  def ensure_default_groupe_instructeur
    if self.groupe_instructeurs.empty?
      groupe_instructeurs.create(label: GroupeInstructeur::DEFAULT_LABEL)
    end
  end
end