<?php
# MantisBT - a php based bugtracking system

# MantisBT is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# MantisBT is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with MantisBT.  If not, see <http://www.gnu.org/licenses/>.

	/**
	 * Update bug data then redirect to the appropriate viewing page
	 *
	 * @package MantisBT
	 * @copyright Copyright (C) 2000 - 2002  Kenzaburo Ito - kenito@300baud.org
	 * @copyright Copyright (C) 2002 - 2014  MantisBT Team - mantisbt-dev@lists.sourceforge.net
	 * @link http://www.mantisbt.org
	 */
	 /**
	  * MantisBT Core API's
	  */
	require_once( 'core.php' );

	require_once( 'bug_api.php' );
	require_once( 'bugnote_api.php' );
	require_once( 'custom_field_api.php' );

	form_security_validate( 'bug_update' );

	$f_bug_id 						= gpc_get_int( 'bug_id' );
	$t_bug_data 					= bug_get( $f_bug_id, true );

	$f_update_mode 					= gpc_get_bool( 'update_mode', FALSE ); # set if called from generic update page
	$f_new_status					= gpc_get_int( 'status', $t_bug_data->status );

	if( $t_bug_data->project_id != helper_get_current_project() ) {
		# in case the current project is not the same project of the bug we are viewing...
		# ... override the current project. This to avoid problems with categories and handlers lists etc.
		$g_project_override = $t_bug_data->project_id;
	}

	$t_user = auth_get_current_user_id();
	if ( !(
			   access_has_bug_level( access_get_status_threshold( $f_new_status, bug_get_field( $f_bug_id, 'project_id' ) ), $f_bug_id )
			|| access_has_bug_level( config_get( 'update_bug_threshold' ) , $f_bug_id )
			|| (   bug_is_user_reporter( $f_bug_id, $t_user )
				&& access_has_bug_level( config_get( 'report_bug_threshold' ), $f_bug_id, $t_user )
				&& (   ON == config_get( 'allow_reporter_reopen' )
					|| ON == config_get( 'allow_reporter_close' )
				   )
			   )
		  )
	) {
		access_denied();
	}

	# extract current extended information
	$t_old_bug_status = $t_bug_data->status;

	$t_bug_data->reporter_id		= gpc_get_int( 'reporter_id', $t_bug_data->reporter_id );
	$t_bug_data->handler_id			= gpc_get_int( 'handler_id', $t_bug_data->handler_id );
	$t_bug_data->duplicate_id		= gpc_get_int( 'duplicate_id', $t_bug_data->duplicate_id );
	$t_bug_data->priority			= gpc_get_int( 'priority', $t_bug_data->priority );
	$t_bug_data->severity			= gpc_get_int( 'severity', $t_bug_data->severity );
	$t_bug_data->reproducibility	= gpc_get_int( 'reproducibility', $t_bug_data->reproducibility );
	$t_bug_data->status				= gpc_get_int( 'status', $t_bug_data->status );
	$t_bug_data->resolution			= gpc_get_int( 'resolution', $t_bug_data->resolution );
	$t_bug_data->projection			= gpc_get_int( 'projection', $t_bug_data->projection );
	$t_bug_data->category_id		= gpc_get_int( 'category_id', $t_bug_data->category_id );
	$t_bug_data->eta				= gpc_get_int( 'eta', $t_bug_data->eta );
	$t_bug_data->os					= gpc_get_string( 'os', $t_bug_data->os );
	$t_bug_data->os_build			= gpc_get_string( 'os_build', $t_bug_data->os_build );
	$t_bug_data->platform			= gpc_get_string( 'platform', $t_bug_data->platform );
	$t_bug_data->version			= gpc_get_string( 'version', $t_bug_data->version );
	$t_bug_data->build				= gpc_get_string( 'build', $t_bug_data->build );
	$t_bug_data->fixed_in_version	= gpc_get_string( 'fixed_in_version', $t_bug_data->fixed_in_version );
	$t_bug_data->view_state			= gpc_get_int( 'view_state', $t_bug_data->view_state );
	$t_bug_data->summary			= gpc_get_string( 'summary', $t_bug_data->summary );
	$t_due_date 					= gpc_get_string( 'due_date', null );

	if( access_has_project_level( config_get( 'roadmap_update_threshold' ), $t_bug_data->project_id ) ) {
		$t_bug_data->target_version	= gpc_get_string( 'target_version', $t_bug_data->target_version );
	}

	if( $t_due_date !== null) {
		if ( is_blank ( $t_due_date ) ) {
			$t_bug_data->due_date = 1;
		} else {
			$t_bug_data->due_date = strtotime( $t_due_date );
		}
	}

	$t_bug_data->description		= gpc_get_string( 'description', $t_bug_data->description );
	$t_bug_data->steps_to_reproduce	= gpc_get_string( 'steps_to_reproduce', $t_bug_data->steps_to_reproduce );
	$t_bug_data->additional_information	= gpc_get_string( 'additional_information', $t_bug_data->additional_information );

	$f_private						= gpc_get_bool( 'private' );
	$f_bugnote_text					= gpc_get_string( 'bugnote_text', '' );
	$f_time_tracking				= gpc_get_string( 'time_tracking', '0:00' );
	$f_close_now					= gpc_get_string( 'close_now', false );

	# Handle auto-assigning
	if ( ( config_get( 'bug_submit_status' ) == $t_bug_data->status )
	  && ( $t_bug_data->status == $t_old_bug_status )
	  && ( 0 != $t_bug_data->handler_id )
	  && ( ON == config_get( 'auto_set_status_to_assigned' ) ) ) {
		$t_bug_data->status = config_get( 'bug_assigned_status' );
	}

	helper_call_custom_function( 'issue_update_validate', array( $f_bug_id, $t_bug_data, $f_bugnote_text ) );

	$t_resolved = config_get( 'bug_resolved_status_threshold' );
	$t_closed = config_get( 'bug_closed_status_threshold' );

	$t_custom_status_label = "update"; # default info to check
	if ( $t_bug_data->status == $t_resolved ) {
		$t_custom_status_label = "resolved";
	}
	if ( $t_bug_data->status == $t_closed ) {
		$t_custom_status_label = "closed";
	}

	$t_related_custom_field_ids = custom_field_get_linked_ids( $t_bug_data->project_id );
	foreach( $t_related_custom_field_ids as $t_id ) {
		$t_def = custom_field_get_definition( $t_id );

		# Only update the field if it would have been displayed for editing
		if( !( ( !$f_update_mode && $t_def['require_' . $t_custom_status_label] ) ||
						( !$f_update_mode && $t_def['display_' . $t_custom_status_label] && in_array( $t_custom_status_label, array( "resolved", "closed" ) ) ) ||
						( $f_update_mode && $t_def['display_update'] ) ||
						( $f_update_mode && $t_def['require_update'] ) ) ) {
			continue;
		}

		# Do not set custom field value if user has no write access.
		if( !custom_field_has_write_access( $t_id, $f_bug_id ) ) {
			continue;
		}

		# Produce an error if the field is required but wasn't posted
		if ( !gpc_isset_custom_field( $t_id, $t_def['type'] ) &&
			( $t_def['require_' . $t_custom_status_label] ) ) {
			error_parameters( lang_get_defaulted( custom_field_get_field( $t_id, 'name' ) ) );
			trigger_error( ERROR_EMPTY_FIELD, ERROR );
		}

		$t_new_custom_field_value = gpc_get_custom_field( "custom_field_$t_id", $t_def['type'], '' );
		$t_old_custom_field_value = custom_field_get_value( $t_id, $f_bug_id );

		# Don't update the custom field if the new value both matches the old value and is valid
		# This ensures that changes to custom field validation will force the update of old invalid custom field values
		if( $t_new_custom_field_value === $t_old_custom_field_value &&
			custom_field_validate( $t_id, $t_new_custom_field_value ) ) {
			continue;
		}

		# Attempt to set the new custom field value
		if ( !custom_field_set_value( $t_id, $f_bug_id, $t_new_custom_field_value ) ) {
			error_parameters( lang_get_defaulted( custom_field_get_field( $t_id, 'name' ) ) );
			trigger_error( ERROR_CUSTOM_FIELD_INVALID_VALUE, ERROR );
		}
	}

	$t_notify = true;
	$t_bug_note_set = false;
	if ( ( $t_old_bug_status != $t_bug_data->status ) && ( FALSE == $f_update_mode ) ) {
		# handle status transitions that come from pages other than bug_*update_page.php
		# this does the minimum to act on the bug and sends a specific message
		if ( $t_bug_data->status >= $t_resolved
			&& $t_bug_data->status < $t_closed
			&& $t_old_bug_status < $t_resolved ) {
			# bug_resolve updates the status, fixed_in_version, resolution,
			# handler_id and bugnote and sends message
			bug_resolve( $f_bug_id,
				$t_bug_data->resolution, $t_bug_data->status,
				$t_bug_data->fixed_in_version,
				$t_bug_data->duplicate_id, $t_bug_data->handler_id,
				$f_bugnote_text, $f_private, $f_time_tracking );
			$t_notify = false;
			$t_bug_note_set = true;

			if ( $f_close_now ) {
				bug_set_field( $f_bug_id, 'status', $t_closed );
			}

			# update bug data with fields that may be updated inside bug_resolve(),
			# otherwise changes will be overwritten in bug_update() call below.
			$t_bug_data->handler_id = bug_get_field( $f_bug_id, 'handler_id' );
			$t_bug_data->status = bug_get_field( $f_bug_id, 'status' );
		} else if ( $t_bug_data->status >= $t_closed
			&& $t_old_bug_status < $t_closed ) {
			# bug_close updates the status and bugnote and sends message
			bug_close( $f_bug_id, $f_bugnote_text, $f_private, $f_time_tracking );
			$t_notify = false;
			$t_bug_note_set = true;
		} else if ( $t_bug_data->status == config_get( 'bug_reopen_status' )
			&& $t_old_bug_status >= $t_resolved ) {
			# fix: update handler_id before calling bug_reopen
			bug_set_field( $f_bug_id, 'handler_id', $t_bug_data->handler_id );
			# bug_reopen updates the status and bugnote and sends message
			bug_reopen( $f_bug_id, $f_bugnote_text, $f_time_tracking, $f_private );
			$t_notify = false;
			$t_bug_note_set = true;

			# update bug data with fields that may be updated inside bug_reopen(),
			# otherwise changes will be overwritten in bug_update() call below.
			$t_bug_data->status = bug_get_field( $f_bug_id, 'status' );
			$t_bug_data->resolution = bug_get_field( $f_bug_id, 'resolution' );
		}
	}

	# Plugin support
	$t_new_bug_data = event_signal( 'EVENT_UPDATE_BUG', $t_bug_data, $f_bug_id );
	if ( !is_null( $t_new_bug_data ) ) {
		$t_bug_data = $t_new_bug_data;
	}

	# Add a bugnote if there is one
	if ( false == $t_bug_note_set ) {
		bugnote_add( $f_bug_id, $f_bugnote_text, $f_time_tracking, $f_private, 0, '', NULL, FALSE );
	}

	# Update the bug entry, notify if we haven't done so already
	$t_bug_data->update( true, ( false == $t_notify ) );

	form_security_purge( 'bug_update' );

	helper_call_custom_function( 'issue_update_notify', array( $f_bug_id ) );

	print_successful_redirect_to_bug( $f_bug_id );