#!/usr/bonsaitools/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>
#                 Myk Melez <myk@mozilla.org>

################################################################################
# Script Initialization
################################################################################

# Make it harder for us to do dangerous things in Perl.
use diagnostics;
use strict;
use lib '/usr/share/bugzilla/lib/';

use vars qw(
  $template
  $vars
);


# Include the Bugzilla CGI and general utility library.
require "CGI.pl";

# Establish a connection to the database backend.
ConnectToDatabase();

# Make sure the user is logged in and is allowed to edit products
# (i.e. the user has "editcomponents" privileges), since attachment
# statuses are product-specific.
confirm_login();
UserInGroup("editcomponents")
  || DisplayError("You are not authorized to administer attachment statuses.")
  && exit;

################################################################################
# Main Body Execution
################################################################################

# All calls to this script should contain an "action" variable whose value
# determines what the user wants to do.  The code below checks the value of
# that variable and runs the appropriate code.

# Determine whether to use the action specified by the user or the default.
my $action = $::FORM{'action'} || 'list';

if ($action eq "list") 
{ 
  list(); 
} 
elsif ($action eq "create") 
{ 
  create(); 
} 
elsif ($action eq "insert") 
{ 
  validateName();
  validateDescription();
  validateSortKey();
  validateProduct();
  insert();
}
elsif ($action eq "edit") 
{ 
  edit(); 
} 
elsif ($action eq "update") 
{ 
  validateID();
  validateName();
  validateDescription();
  validateSortKey();
  update();
}
elsif ($action eq "confirmdelete") 
{ 
  validateID();
  confirmDelete();
} 
elsif ($action eq "delete")
{
  validateID();
  deleteStatus();
}
else 
{ 
  DisplayError("I could not figure out what you wanted to do.")
}

exit;

################################################################################
# Data Validation
################################################################################

sub validateID
{
  $::FORM{'id'} =~ /^[1-9][0-9]*$/
    || DisplayError("The status ID is not a positive integer.") 
      && exit;
  
  SendSQL("SELECT 1 FROM attachstatusdefs WHERE id = $::FORM{'id'}");
  my ($defexists) = FetchSQLData();
  $defexists
    || DisplayError("The status with ID #$::FORM{'id'} does not exist.") 
      && exit;
}

sub validateName
{
  $::FORM{'name'}
    || DisplayError("You must enter a name for the status.")
      && exit;

  $::FORM{'name'} !~ /[\s,]/
    || DisplayError("The status name cannot contain commas or whitespace.")
      && exit;

  length($::FORM{'name'}) <= 50
    || DisplayError("The status name cannot be more than 50 characters long.")
      && exit;
}

sub validateDescription
{
  $::FORM{'desc'}
    || DisplayError("You must enter a description of the status.")
      && exit;
}

sub validateSortKey
{
  $::FORM{'sortkey'} =~ /^\d+$/
    && $::FORM{'sortkey'} < 32768
      || DisplayError("The sort key must be an integer between 0 and 32767 inclusive.") 
        && exit;
}

sub validateProduct
{
  # Retrieve a list of products.
  SendSQL("SELECT product FROM products");
  my @products;
  push(@products, FetchSQLData()) while MoreSQLData();

  grep($_ eq $::FORM{'product'}, @products)
    || DisplayError("You must select an existing product for the status.") 
      && exit;
}

################################################################################
# Functions
################################################################################

sub list
{
  # Administer attachment status flags, which is the set of status flags 
  # that can be applied to an attachment.

  # If the user is seeing this screen as a result of doing something to
  # an attachment status flag, display a message about what happened
  # to that flag (i.e. "The attachment status flag was updated.").
  my ($message) = (@_);

  # Retrieve a list of attachment status flags and create an array of hashes
  # in which each hash contains the data for one flag.
  SendSQL("SELECT id, name, description, sortkey, product, count(statusid)
           FROM attachstatusdefs LEFT JOIN attachstatuses 
                ON attachstatusdefs.id=attachstatuses.statusid
           GROUP BY id
           ORDER BY sortkey");
  my @statusdefs;
  while ( MoreSQLData() )
  {
    my ($id, $name, $description, $sortkey, $product, $attachcount) = FetchSQLData();
    push @statusdefs, { 'id' => $id , 'name' => $name , 'description' => $description , 
                        'sortkey' => $sortkey , 'product' => $product, 
                        'attachcount' => $attachcount };
  }

  # Define the variables and functions that will be passed to the UI template.
  $vars->{'message'} = $message;
  $vars->{'statusdefs'} = \@statusdefs;

  # Return the appropriate HTTP response headers.
  print "Content-type: text/html\n\n";

  # Generate and return the UI (HTML page) from the appropriate template.
  $template->process("admin/attachstatus/list.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
}


sub create
{
  # Display a form for creating a new attachment status flag.

  # Retrieve a list of products to which the attachment status may apply.
  SendSQL("SELECT product FROM products ORDER BY product");
  my @products;
  push(@products, FetchSQLData()) while MoreSQLData();

  # Define the variables and functions that will be passed to the UI template.
  $vars->{'products'} = \@products;

  # Return the appropriate HTTP response headers.
  print "Content-type: text/html\n\n";

  # Generate and return the UI (HTML page) from the appropriate template.
  $template->process("admin/attachstatus/create.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
}


sub insert
{
  # Insert a new attachment status flag into the database.

  # Quote the flag's name and description as appropriate for inclusion
  # in a SQL statement.
  my $name = SqlQuote($::FORM{'name'});
  my $desc = SqlQuote($::FORM{'desc'});
  my $product = SqlQuote($::FORM{'product'});

  SendSQL("LOCK TABLES attachstatusdefs WRITE");
  SendSQL("SELECT MAX(id) FROM attachstatusdefs");
  my $id = FetchSQLData() || 0;
  $id++;
  SendSQL("INSERT INTO attachstatusdefs (id, name, description, sortkey, product)
           VALUES ($id, $name, $desc, $::FORM{'sortkey'}, $product)");
  SendSQL("UNLOCK TABLES");

  # Display the "administer attachment status flags" page
  # along with a message that the flag has been created.
  list("The attachment status has been created.");
}


sub edit
{
  # Display a form for editing an existing attachment status flag.

  # Retrieve the definition from the database.
  SendSQL("SELECT name, description, sortkey, product 
           FROM attachstatusdefs WHERE id = $::FORM{'id'}");
  my ($name, $desc, $sortkey, $product) = FetchSQLData();

  # Define the variables and functions that will be passed to the UI template.
  $vars->{'id'} = $::FORM{'id'}; 
  $vars->{'name'} = $name; 
  $vars->{'desc'} = $desc; 
  $vars->{'sortkey'} = $sortkey; 
  $vars->{'product'} = $product; 

  # Return the appropriate HTTP response headers.
  print "Content-type: text/html\n\n";

  # Generate and return the UI (HTML page) from the appropriate template.
  $template->process("admin/attachstatus/edit.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
}


sub update
{
  # Update an attachment status flag in the database.

  # Quote the flag's name and description as appropriate for inclusion
  # in a SQL statement.
  my $name = SqlQuote($::FORM{'name'});
  my $desc = SqlQuote($::FORM{'desc'});

  SendSQL("LOCK TABLES attachstatusdefs WRITE");
  SendSQL("
           UPDATE  attachstatusdefs 
           SET     name = $name , 
                   description = $desc , 
                   sortkey = $::FORM{'sortkey'} 
           WHERE   id = $::FORM{'id'}
         ");
  SendSQL("UNLOCK TABLES");

  # Display the "administer attachment status flags" page
  # along with a message that the flag has been updated.
  list("The attachment status has been updated.");
}

sub confirmDelete 
{
  # check if we need confirmation to delete:

  SendSQL("SELECT COUNT(attach_id), name 
           FROM attachstatusdefs LEFT JOIN attachstatuses
                ON attachstatuses.statusid=attachstatusdefs.id
           WHERE statusid = $::FORM{'id'}
           GROUP BY attachstatuses.statusid;");
  
  my ($attachcount, $name) = FetchSQLData();

  if ($attachcount > 0) {

    $vars->{'id'} = $::FORM{'id'};
    $vars->{'attachcount'} = $attachcount;
    $vars->{'name'} = $name;

    print "Content-type: text/html\n\n";
    
    $template->process("admin/attachstatus/delete.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
  } 
  else {
    deleteStatus();
  }
}

sub deleteStatus
{
  # Delete an attachment status flag from the database.

  SendSQL("LOCK TABLES attachstatusdefs WRITE, attachstatuses WRITE");
  SendSQL("DELETE FROM attachstatuses WHERE statusid = $::FORM{'id'}");
  SendSQL("DELETE FROM attachstatusdefs WHERE id = $::FORM{'id'}");
  SendSQL("UNLOCK TABLES");

  # Display the "administer attachment status flags" page
  # along with a message that the flag has been deleted.
  list("The attachment status has been deleted.");
}