package SL::Controller::RequirementSpec;
 
 use strict;
+use utf8;
 
 use parent qw(SL::Controller::Base);
 
+use SL::ClientJS;
 use SL::Controller::Helper::GetModels;
 use SL::Controller::Helper::Paginated;
 use SL::Controller::Helper::Sorted;
 use SL::Controller::Helper::ParseFilter;
 use SL::Controller::Helper::ReportGenerator;
+use SL::Controller::Helper::RequirementSpec;
 use SL::DB::Customer;
 use SL::DB::Project;
+use SL::DB::RequirementSpecComplexity;
+use SL::DB::RequirementSpecRisk;
 use SL::DB::RequirementSpecStatus;
 use SL::DB::RequirementSpecType;
 use SL::DB::RequirementSpec;
 use SL::Helper::Flash;
 use SL::Locale::String;
+use SL::Template::LaTeX;
 
 use Rose::Object::MakeMethods::Generic
 (
- scalar => [ qw(requirement_spec requirement_spec_item customers projects types statuses db_args flat_filter is_template) ],
+  scalar                  => [ qw(requirement_spec_item customers types statuses db_args flat_filter visible_item visible_section) ],
+  'scalar --get_set_init' => [ qw(requirement_spec complexities risks projects copy_source js) ],
 );
 
 __PACKAGE__->run_before('setup');
-__PACKAGE__->run_before('load_requirement_spec',      only => [ qw(    edit        update show destroy tree) ]);
-__PACKAGE__->run_before('load_select_options',        only => [ qw(new edit create update list) ]);
-__PACKAGE__->run_before('load_search_select_options', only => [ qw(                       list) ]);
+__PACKAGE__->run_before('load_select_options',  only => [ qw(new ajax_edit create update list) ]);
+
 
 __PACKAGE__->get_models_url_params('flat_filter');
 __PACKAGE__->make_paginated(
   type          => t8('Requirement Spec Type'),
   status        => t8('Requirement Spec Status'),
   projectnumber => t8('Project Number'),
+  version       => t8('Version'),
+  mtime         => t8('Last modification'),
 );
 
 #
 # actions
 #
 
+
 sub action_list {
   my ($self) = @_;
 
 sub action_new {
   my ($self) = @_;
 
-  $self->{requirement_spec} = SL::DB::RequirementSpec->new;
-  $self->render('requirement_spec/form', title => t8('Create a new requirement spec'));
+  $self->requirement_spec(SL::DB::RequirementSpec->new(is_template => $::form->{is_template}));
+
+  if ($self->copy_source) {
+    $self->requirement_spec->$_($self->copy_source->$_) for qw(type_id status_id customer_id title hourly_rate)
+  }
+
+  $self->render('requirement_spec/new', title => $self->requirement_spec->is_template ? t8('Create a new requirement spec template') : t8('Create a new requirement spec'));
+}
+
+sub action_ajax_edit {
+  my ($self) = @_;
+
+  $self->render('requirement_spec/_form', { layout => 0 }, submit_as => 'ajax');
 }
 
-sub action_edit {
+sub action_ajax_show_time_and_cost_estimate {
   my ($self) = @_;
-  $self->render('requirement_spec/form', title => t8('Edit requirement spec'));
+
+  $self->render('requirement_spec/_show_time_and_cost_estimate', { layout => 0 });
+}
+
+sub action_ajax_cancel_time_and_cost_estimate {
+  my ($self) = @_;
+
+  my $html   = $self->render('requirement_spec/_show_time_and_cost_estimate', { output => 0 });
+
+  $self->js
+   ->replaceWith('#time_cost_estimate', $html)
+   ->render($self);
+}
+
+sub action_ajax_edit_time_and_cost_estimate {
+  my ($self) = @_;
+
+  my $html   = $self->render('requirement_spec/_edit_time_and_cost_estimate', { output => 0 });
+
+  $self->js
+   ->replaceWith('#time_cost_estimate', $html)
+   ->render($self);
+}
+
+sub action_ajax_save_time_and_cost_estimate {
+  my ($self) = @_;
+
+  $self->requirement_spec->db->do_transaction(sub {
+    # Make Emacs happy
+    1;
+    foreach my $attributes (@{ $::form->{requirement_spec_items} || [] }) {
+      SL::DB::RequirementSpecItem
+        ->new(id => delete $attributes->{id})
+        ->load
+        ->update_attributes(%{ $attributes });
+    }
+
+    1;
+  });
+
+  my $html = $self->render('requirement_spec/_show_time_and_cost_estimate', { output => 0 });
+  $self->js->replaceWith('#time_cost_estimate', $html);
+
+  if ($self->visible_section) {
+    $html = $self->render('requirement_spec_item/_section', { output => 0 }, requirement_spec_item => $self->visible_section);
+    $self->js->html('#column-content', $html);
+  }
+
+  $self->js->render($self);
 }
 
 sub action_show {
 sub action_create {
   my ($self) = @_;
 
-  $self->{requirement_spec} = SL::DB::RequirementSpec->new;
+  $self->requirement_spec(SL::DB::RequirementSpec->new);
   $self->create_or_update;
 }
 
 sub action_destroy {
   my ($self) = @_;
 
-  if (eval { $self->{requirement_spec}->delete; 1; }) {
+  if (eval { $self->requirement_spec->delete; 1; }) {
     flash_later('info',  t8('The requirement spec has been deleted.'));
   } else {
     flash_later('error', t8('The requirement spec is in use and cannot be deleted.'));
   $self->redirect_to(action => 'list');
 }
 
-sub action_reorder {
-  my ($self) = @_;
+sub action_revert_to {
+  my ($self, %params) = @_;
+
+  return $self->js->error(t8('Cannot revert a versioned copy.'))->render($self) if $self->requirement_spec->working_copy_id;
 
-  SL::DB::RequirementSpec->reorder_list(@{ $::form->{requirement_spec_id} || [] });
+  my $versioned_copy = SL::DB::RequirementSpec->new(id => $::form->{versioned_copy_id})->load;
 
-  $self->render('1;', { type => 'js', inline => 1 });
+  $self->requirement_spec->copy_from(
+    $versioned_copy,
+    version_id => $versioned_copy->version_id,
+  );
+
+  flash_later('info', t8('The requirement spec has been reverted to version #1.', $self->requirement_spec->version->version_number));
+  $self->js->redirect_to($self->url_for(action => 'show', id => $self->requirement_spec->id))->render($self);
 }
 
-sub action_tree {
-  my ($self) = @_;
-  my $r = $self->render('requirement_spec/tree', now => DateTime->now);
+sub action_create_pdf {
+  my ($self, %params) = @_;
+
+  my %result = SL::Template::LaTeX->parse_and_create_pdf('requirement_spec.tex', SELF => $self, rspec => $self->requirement_spec);
+
+  $::form->error(t8('Conversion to PDF failed: #1', $result{error})) if $result{error};
+
+  my $attachment_name  =  $self->requirement_spec->type->description . ' ' . ($self->requirement_spec->working_copy_id || $self->requirement_spec->id);
+  $attachment_name    .=  ' (v' . $self->requirement_spec->version->version_number . ')' if $self->requirement_spec->version;
+  $attachment_name    .=  '.pdf';
+  $attachment_name     =~ s/[^\wäöüÄÖÜß \-\+\(\)\[\]\{\}\.,]+/_/g;
+
+  $self->send_file($result{file_name}, type => 'application/pdf', name => $attachment_name);
+  unlink $result{file_name};
 }
 
 #
 sub setup {
   my ($self) = @_;
 
-  $::auth->assert('config');
+  $::auth->assert('sales_quotation_edit');
   $::request->{layout}->use_stylesheet("${_}.css") for qw(jquery.contextMenu requirement_spec);
-  $::request->{layout}->use_javascript("${_}.js") for qw(jquery.jstree jquery/jquery.contextMenu requirement_spec);
-  $self->is_template($::form->{is_template} ? 1 : 0);
+  $::request->{layout}->use_javascript("${_}.js") for qw(jquery.jstree jquery/jquery.contextMenu client_js requirement_spec);
+  $self->init_visible_section;
 
   return 1;
 }
 
-sub load_requirement_spec {
+sub init_complexities {
   my ($self) = @_;
-  $self->{requirement_spec} = SL::DB::RequirementSpec->new(id => $::form->{id})->load || die "No such requirement spec";
+  return SL::DB::Manager::RequirementSpecComplexity->get_all_sorted;
+}
+
+sub init_risks {
+  my ($self) = @_;
+  return SL::DB::Manager::RequirementSpecRisk->get_all_sorted;
+}
+
+sub init_projects {
+  my ($self) = @_;
+  $self->projects(SL::DB::Manager::Project->get_all_sorted);
+}
+
+sub init_requirement_spec {
+  my ($self) = @_;
+  $self->requirement_spec(SL::DB::RequirementSpec->new(id => $::form->{id})->load || die "No such requirement spec") if $::form->{id};
+}
+
+sub init_copy_source {
+  my ($self) = @_;
+  $self->copy_source(SL::DB::RequirementSpec->new(id => $::form->{copy_source_id})->load) if $::form->{copy_source_id};
+}
+
+sub init_js {
+  my ($self) = @_;
+  $self->js(SL::ClientJS->new);
 }
 
 sub load_select_options {
   my ($self) = @_;
 
   my @filter = ('!obsolete' => 1);
-  if ($self->requirement_spec && $self->requirement_spec->customer_id) {
-    @filter = ( or => [ @filter, id => $self->requirement_spec->customer_id ] );
-  }
+  @filter    = ( or => [ @filter, id => $self->requirement_spec->customer_id ] ) if $self->requirement_spec && $self->requirement_spec->customer_id;
 
   $self->customers(SL::DB::Manager::Customer->get_all_sorted(where => \@filter));
   $self->statuses( SL::DB::Manager::RequirementSpecStatus->get_all_sorted);
   $self->types(    SL::DB::Manager::RequirementSpecType->get_all_sorted);
 }
 
-sub load_search_select_options {
-  my ($self) = @_;
-
-  $self->projects(SL::DB::Manager::Project->get_all_sorted);
-}
-
 #
 # helpers
 #
 
 sub create_or_update {
   my $self   = shift;
-  my $is_new = !$self->{requirement_spec}->id;
+  my $is_new = !$self->requirement_spec->id;
   my $params = delete($::form->{requirement_spec}) || { };
-  my $title  = $is_new ? t8('Create a new requirement spec') : t8('Edit requirement spec');
 
-  $self->{requirement_spec}->assign_attributes(%{ $params });
+  $self->requirement_spec->assign_attributes(%{ $params });
+
+  my $title  = $is_new && $self->requirement_spec->is_template ? t8('Create a new requirement spec template')
+             : $is_new                                         ? t8('Create a new requirement spec')
+             :            $self->requirement_spec->is_template ? t8('Edit requirement spec template')
+             :                                                   t8('Edit requirement spec');
 
-  my @errors = $self->{requirement_spec}->validate;
+  my @errors = $self->requirement_spec->validate;
 
   if (@errors) {
+    return $self->js->error(@errors)->render($self) if $::request->is_ajax;
+
     flash('error', @errors);
-    $self->render('requirement_spec/form', title => $title);
+    $self->render('requirement_spec/new', title => $title);
     return;
   }
 
-  $self->{requirement_spec}->save;
+  my $db = $self->requirement_spec->db;
+  if (!$db->do_transaction(sub {
+    if ($self->copy_source) {
+      $self->requirement_spec($self->copy_source->create_copy(%{ $params }));
+    } else {
+      $self->requirement_spec->save;
+    }
+  })) {
+    $::lxdebug->message(LXDebug::WARN(), "Error: " . $db->error);
+    @errors = ($::locale->text('Saving failed. Error message from the database: #1'), $db->error);
+    return $self->js->error(@errors)->render($self) if $::request->is_ajax;
+
+    $self->requirement_spec->id(undef) if $is_new;
+    flash('error', @errors);
+    return $self->render('requirement_spec/new', title => $title);
+  }
 
-  flash_later('info', $is_new ? t8('The requirement spec has been created.') : t8('The requirement spec has been saved.'));
-  $self->redirect_to(action => 'list');
+  my $info = $self->requirement_spec->is_template ? t8('The requirement spec template has been saved.') : t8('The requirement spec has been saved.');
+
+  if ($::request->is_ajax) {
+    my $html = $self->render('requirement_spec/_header', { output => 0 });
+    return $self->invalidate_version
+      ->replaceWith('#requirement-spec-header', $html)
+      ->flash('info', $info)
+      ->render($self);
+  }
+
+  flash_later('info', $info);
+  $self->redirect_to(action => 'show', id => $self->requirement_spec->id);
 }
 
 sub setup_db_args_from_filter {
   $args{where} = [
     and => [
       @{ $args{where} || [] },
-      is_template => $self->is_template
+      working_copy_id => undef,
+      is_template     => $::form->{is_template} ? 1 : 0,
     ]];
 
   $self->db_args(\%args);
 
   my $callback    = $self->get_callback;
 
+  my $is_template = $::form->{is_template};
   my $report      = SL::ReportGenerator->new(\%::myconfig, $::form);
   $self->{report} = $report;
 
-  my @columns     = qw(title customer status type projectnumber);
-  my @sortable    = qw(title customer status type projectnumber);
+  my @columns     = $is_template ? qw(title mtime) : qw(title customer status type projectnumber mtime version);
+  my @sortable    = $is_template ? qw(title mtime) : qw(title customer status type projectnumber mtime);
 
   my %column_defs = (
-    title         => { obj_link => sub { $self->url_for(action => 'edit', id => $_[0]->id, callback => $callback) } },
-    customer      => { raw_data => sub { $self->presenter->customer($_[0]->customer, display => 'table-cell', callback => $callback) },
-                       sub      => sub { $_[0]->customer->name } },
-    projectnumber => { raw_data => sub { $self->presenter->project($_[0]->project, display => 'table-cell', callback => $callback) },
-                       sub      => sub { $_[0]->project_id ? $_[0]->project->projectnumber : '' } },
-    status        => { sub      => sub { $_[0]->status->description } },
-    type          => { sub      => sub { $_[0]->type->description } },
+    title         => { obj_link => sub { $self->url_for(action => 'show', id => $_[0]->id, callback => $callback) } },
+    mtime         => { sub      => sub { ($_[0]->mtime || $_[0]->itime)->to_kivitendo(precision => 'minute') } },
   );
 
+  if (!$is_template) {
+    %column_defs = (
+      %column_defs,
+      customer      => { raw_data => sub { $self->presenter->customer($_[0]->customer, display => 'table-cell', callback => $callback) },
+                         sub      => sub { $_[0]->customer->name } },
+      projectnumber => { raw_data => sub { $self->presenter->project($_[0]->project, display => 'table-cell', callback => $callback) },
+                         sub      => sub { $_[0]->project_id ? $_[0]->project->projectnumber : '' } },
+      status        => { sub      => sub { $_[0]->status->description } },
+      type          => { sub      => sub { $_[0]->type->description } },
+      version       => { sub      => sub { $_[0]->version_id ? $_[0]->version->version_number : t8('Working copy without version') } },
+    );
+  }
+
   map { $column_defs{$_}->{text} ||= $::locale->text( $self->get_sort_spec->{$_}->{title} ) } keys %column_defs;
 
   $report->set_options(
     std_column_visibility => 1,
     controller_class      => 'RequirementSpec',
     output_format         => 'HTML',
-    raw_top_info_text     => $self->render('requirement_spec/report_top',    { output => 0 }),
+    raw_top_info_text     => $self->render('requirement_spec/report_top',    { output => 0 }, is_template => $is_template),
     raw_bottom_info_text  => $self->render('requirement_spec/report_bottom', { output => 0 }),
-    title                 => $::locale->text('Requirement Specs'),
+    title                 => $is_template ? t8('Requirement Spec Templates') : t8('Requirement Specs'),
     allow_pdf_export      => 1,
     allow_csv_export      => 1,
   );
   $self->disable_pagination if $report->{options}{output_format} =~ /^(pdf|csv)$/i;
 }
 
+sub invalidate_version {
+  my ($self) = @_;
+
+  my $rspec  = SL::DB::RequirementSpec->new(id => $self->requirement_spec->id)->load;
+  return $self->js if $rspec->is_template;
+
+  $rspec->invalidate_version;
+
+  my $html = $self->render('requirement_spec/_version', { output => 0 }, requirement_spec => $rspec);
+  return $self->js->html('#requirement_spec_version', $html);
+}
+
 1;