<?php
// $Id$

/**
 * Implementation of hook_menu().
 */
function textbook_companion_menu()
{
  $items = array();

  /* users */
  $items['proposal'] = array(
    'title' => 'Book Proposal Form',
    'description' => 'Book Proposal Form.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('book_proposal_form'),
    'access callback' => 'user_access',
    'access arguments' => array('create book proposal'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'proposal.inc',
  );
  
  /* for reviewers */
  $items['manage_proposal'] = array(
    'title' => 'Manage Book Proposals',
    'description' => 'Manage Book Proposals',
    'page callback' => '_proposal_pending',
    'access callback' => 'user_access',
    'access arguments' => array('approve book proposal'),
    'file' => 'manage_proposal.inc',
  );
  $items['manage_proposal/pending'] = array(
    'title' => 'Pending Proposals',
    'description' => 'Pending Proposals Queue',
    'page callback' => '_proposal_pending',
    'access callback' => 'user_access',
    'access arguments' => array('approve book proposal'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 1,
    'file' => 'manage_proposal.inc',
  );
  $items['manage_proposal/all'] = array(
    'title' => 'All Proposals',
    'description' => 'All Proposals',
    'page callback' => '_proposal_all',
    'access callback' => 'user_access',
    'access arguments' => array('approve book proposal'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
    'file' => 'manage_proposal.inc',
  );
  /*$items['manage_proposal/category'] = array(
    'title' => 'Categorize',
    'description' => 'Categorize Books',
    'page callback' => '_category_all',
    'access callback' => 'user_access',
    'access arguments' => array('approve book proposal'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
    'file' => 'manage_proposal.inc',
  );*/
  $items['manage_proposal/approve'] = array(
    'title' => 'Proposal Approval',
    'description' => 'Proposal Approval',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('proposal_approval_form'),
    'access arguments' => array('approve book proposal'),
    'type' => MENU_CALLBACK,
    'file' => 'manage_proposal.inc',
  );
  $items['manage_proposal/status'] = array(
    'title' => 'Proposal Status',
    'description' => 'Proposal Status',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('proposal_status_form'),
    'access arguments' => array('approve book proposal'),
    'type' => MENU_CALLBACK,
    'file' => 'manage_proposal.inc',
  );
  $items['manage_proposal/edit'] = array(
    'title' => 'Edit Proposal',
    'description' => 'Edit Proposal',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('proposal_edit_form'),
    'access arguments' => array('edit book proposal'),
    'type' => MENU_CALLBACK,
    'file' => 'manage_proposal.inc',
  );
  $items['manage_proposal/category/edit'] = array(
    'title' => 'Edit Category',
    'description' => 'Edit category',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('category_edit_form'),
    'access arguments' => array('edit book proposal'),
    'type' => MENU_CALLBACK,
    'file' => 'manage_proposal.inc',
  );
  $items['textbook_companion/code'] = array(
    'title' => 'Code Submission',
    'description' => 'Code Submission',
    'page callback' => 'list_chapters',
    'access callback' => 'user_access',
    'access arguments' => array('upload code'),
    'file' => 'general.inc',
  );
  $items['textbook_companion/code/list_chapters'] = array(
    'title' => 'List Chapters',
    'description' => 'List Chapters', 
    'page callback' => 'list_chapters',
    'access arguments' => array('upload code'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'file' => 'general.inc',
    'weight' => 1,
  );
  $items['textbook_companion/code/upload'] = array(
    'title' => 'Code Submission',
    'description' => 'Code Submission',
    'page callback' => 'upload_examples',
    'access arguments' => array('upload code'),
    'type' => MENU_LOCAL_TASK,
    'file' => 'code.inc',
    'weight' => 2,
  );
  $items['textbook_companion/code/edit'] = array(
    'title' => 'Edit Example',
    'description' => 'Edit Example', 
    'page callback' => 'drupal_get_form',
    'page arguments' => array('upload_examples_edit_form'),
    'access arguments' => array('edit uploaded code'),
    'type' => MENU_CALLBACK,
    'file' => 'editcode.inc',
  );
  $items['textbook_companion/code/delete'] = array(
    'title' => 'Delete Example',
    'description' => 'Delete Example', 
    'page callback' => '_upload_examples_delete',
    'access arguments' => array('upload code'),
    'type' => MENU_CALLBACK,
    'file' => 'code.inc',
  );
  $items['textbook_companion/code/chapter/edit'] = array(
    'title' => 'Edit Chapter Title',
    'description' => 'Edit Chapter Title',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('edit_chapter_title_form'),
    'access arguments' => array('upload code'),
    'type' => MENU_CALLBACK,
    'file' => 'editcode.inc',
  );
  $items['textbook_companion/code/list_examples'] = array(
    'title' => 'List Examples',
    'description' => 'List Examples', 
    'page callback' => 'list_examples',
    'access arguments' => array('upload code'),
    'type' => MENU_CALLBACK,
    'file' => 'general.inc',
    'weight' => 3,
  );
  
  $items['code_approval'] = array(
    'title' => 'Manage Code Approval',
    'description' => 'Manage Code Approval',
    'page callback' => 'code_approval',
    'access arguments' => array('approve code'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'code_approval.inc',
  );
  $items['code_approval/approve'] = array(
    'title' => 'Code Approval',
    'description' => 'Code Approval',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('code_approval_form'),
    'access arguments' => array('approve code'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 1,
    'file' => 'code_approval.inc',
  );
  $items['code_approval/bulk'] = array(
    'title' => 'Bulk Manage',
    'description' => 'Bulk Mangage',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('bulk_approval_form'),
    'access arguments' => array('bulk manage code'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
    'file' => 'code_approval.inc',
  );
  $items['code_approval/editcode'] = array(
    'title' => 'Admin Edit Example',
    'description' => 'Admin Edit Example',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('upload_examples_admin_edit_form'),
    'access arguments' => array('approve code'),
    'type' => MENU_CALLBACK,
    'weight' => 3,
    'file' => 'editcodeadmin.inc',
  );
  $items['code_approval/notes'] = array(
    'title' => 'Notes for Reviewers',
    'description' => 'Notes for Reviewers',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('book_notes_form'),
    'access arguments' => array('bulk manage code'),
    'type' => MENU_CALLBACK,
    'weight' => 4,
    'file' => 'notes.inc',
  );
  
  /* reviewer download */
  $items['full_download/chapter'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_full_chapter',
    'access arguments' => array('approve code'),
    'type' => MENU_CALLBACK,
    'file' => 'full_download.inc',
  );
  $items['full_download/book'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_full_book',
    'access arguments' => array('approve code'),
    'type' => MENU_CALLBACK,
    'file' => 'full_download.inc',
  );
  
  $items['textbook_run'] = array(
    'title' => 'Download Codes',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('textbook_companion_run_form'),
    'access arguments' => array('access content'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'run.inc',
  );
  
  /* general purpose callbacks */
  $items['textbook_companion/ajax'] = array(
    'title' => 'Ajax',
    'description' => 'Ajax',
    'page callback' => 'textbook_companion_ajax',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  
  /* download callbacks */
  $items['download/file'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_example_file',
    'access arguments' => array('download code'),
    'type' => MENU_CALLBACK,
    'file' => 'download.inc',
  );
  $items['download/example'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_example',
    'access arguments' => array('download code'),
    'type' => MENU_CALLBACK,
    'file' => 'download.inc',
  );
  $items['download/chapter'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_chapter',
    'access arguments' => array('download code'),
    'type' => MENU_CALLBACK,
    'file' => 'download.inc',
  );
  $items['download/book'] = array(
    'title' => 'Code Download',
    'description' => 'Code Download', 
    'page callback' => 'textbook_companion_download_book',
    'access arguments' => array('download code'),
    'type' => MENU_CALLBACK,
    'file' => 'download.inc',
  );
  /* for admin */
  $items['admin/settings/book_companion'] = array(
    'title' => 'Book Companion Settings',
    'description' => 'Book Companion Settings', 
    'page callback' => 'drupal_get_form',
    'page arguments' => array('textbook_companion_settings_form'),
    'access arguments' => array('administer book companion'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'settings.inc',
  );

  return $items;
}

/**
 * Implementation of hook_perm().
 */
function textbook_companion_perm() {
  return array('create book proposal', 'approve book proposal', 'approve code', 'upload code', 'edit uploaded code', 'download code', 'create feedback', 'bulk manage code', 'bulk delete code', 'edit book proposal', 'administer book companion', 'generate book');
}

/* AJAX CALLS */
function textbook_companion_ajax()
{
  $query_type = arg(2);
  if ($query_type == 'chapter_title')
  {
    $chapter_number = arg(3);
    $preference_id = arg(4);
    $chapter_q = db_query("SELECT * FROM {textbook_companion_chapter} WHERE number = %d AND preference_id = %d LIMIT 1", $chapter_number, $preference_id);
    if ($chapter_data = db_fetch_object($chapter_q))
    {
      echo $chapter_data->name;
      return;
    }
  } else if ($query_type == 'example_exists') {
    $chapter_number = arg(3);
    $preference_id = arg(4);
    $example_number = arg(5);

    $chapter_id = 0;
    $chapter_q = db_query("SELECT * FROM {textbook_companion_chapter} WHERE number = %d AND preference_id = %d LIMIT 1", $chapter_number, $preference_id);
    if (!$chapter_data = db_fetch_object($chapter_q))
    {
      echo '';
      return;
    } else {
      $chapter_id = $chapter_data->id;
    }

    $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE chapter_id = %d AND number = '%s' LIMIT 1", $chapter_id, $example_number);
    if ($example_data = db_fetch_object($example_q))
    {
      if ($example_data->approval_status == 1)
        echo 'Warning! Example already approved. You cannot upload the same example again.';
      else
        echo 'Warning! Example already uploaded. Delete the example and reupload it.';
      return;
    }
  }
  echo '';
}

/*************************** VALIDATION FUNCTIONS *****************************/
function textbook_companion_check_valid_filename($file_name) {
  if (!preg_match('/^[0-9a-zA-Z\_\.]+$/', $file_name))
    return FALSE;
  else
    if (substr_count($file_name, ".") > 1)
      return FALSE;
    else
      return TRUE;
}

function check_name($name = '') {
  if (!preg_match('/^[0-9a-zA-Z\ ]+$/', $name))
    return FALSE;
  else
    return TRUE;
}

function check_chapter_number($name = '') {
  if (!preg_match('/^([0-9])+(\.([0-9a-zA-Z])+)+$/', $name))
    return FALSE;
  else
    return TRUE;
}

function textbook_companion_path() {
  return $_SERVER['DOCUMENT_ROOT'] . base_path() . 'uploads/';
}

/****************************** DELETION FUNCTIONS ****************************/

function delete_example($example_id)
{
  global $user;
  $root_path = textbook_companion_path();
  $status = TRUE;

  $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE id = %d", $example_id);
  $example_data = db_fetch_object($example_q);
  if (!$example_data)
  {
    drupal_set_message(t('Invalid example.'), 'error');
    return FALSE;
  }

  $chapter_q = db_query("SELECT * FROM {textbook_companion_chapter} WHERE id = %d", $example_data->chapter_id);
  $chapter_data = db_fetch_object($chapter_q);
  if (!$chapter_data)
  {
    drupal_set_message(t('Invalid example chapter.'), 'error');
    return FALSE;
  }

  /* deleting example files */
  $examples_files_q = db_query("SELECT * FROM {textbook_companion_example_files} WHERE example_id = %d", $example_id);
  while ($examples_files_data = db_fetch_object($examples_files_q))
  {
    if (!file_exists($root_path . $examples_files_data->filepath))
    {
      $status = FALSE;
      drupal_set_message(t('Error deleting !file. File does not exists.', array('!file' => $examples_files_data->filepath)), 'error');
      continue;
    }

    /* removing example file */
    if (!unlink($root_path . $examples_files_data->filepath))
    {
      $status = FALSE;
      drupal_set_message(t('Error deleting !file', array('!file' => $examples_files_data->filepath)), 'error');

      /* sending email to admins */
      $email_to = variable_get('textbook_companion_emails', '');
      $param['standard']['subject'] = "[ERROR] Error deleting example file";
      $param['standard']['body'] = "Error deleting example files by " . $user->uid . " at " . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] . " :
        example id : " . $example_id . "
        file id : " .  $examples_files_data->id . "
        file path : " . $examples_files_data->filepath;
      if (!drupal_mail('textbook_companion', 'standard', $email_to, language_default(), $param, variable_get('textbook_companion_from_email', NULL), TRUE))
        drupal_set_message('Error sending email message.', 'error');
    } else {
      /* deleting example files database entries */
      db_query("DELETE FROM {textbook_companion_example_files} WHERE id = %d", $examples_files_data->id);
    }
  }

  if (!$status)
    return FALSE;

  /* removing example folder */
  $ex_path = $chapter_data->preference_id . '/' . 'CH' . $chapter_data->number . '/' . 'EX' . $example_data->number;
  $dir_path = $root_path . $ex_path;
  if (is_dir($dir_path))
  {
    if (!rmdir($dir_path))
    {
      drupal_set_message(t('Error deleting folder !folder', array('!folder' => $dir_path)), 'error');

      /* sending email to admins */
      $email_to = variable_get('textbook_companion_emails', '');
      $param['standard']['subject'] = "[ERROR] Error deleting folder";
      $param['standard']['body'] = "Error deleting folder " . $dir_path . " by " . $user->uid . " at " . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
      if (!drupal_mail('textbook_companion', 'standard', $email_to, language_default(), $param, variable_get('textbook_companion_from_email', NULL), TRUE))
        drupal_set_message('Error sending email message.', 'error');
      return FALSE;
    }
  } else {
    drupal_set_message(t('Cannot delete example folder. !folder does not exists.', array('!folder' => $dir_path)), 'error');
    return FALSE;
  }

  /* deleting exmaple database entries */
  db_query("DELETE FROM {textbook_companion_example} WHERE id = %d", $example_id);

  return $status;
}

function delete_file($file_id)
{
  $root_path = textbook_companion_path();

  $file_q = db_query("SELECT * FROM {textbook_companion_example_files} WHERE id = %d LIMIT 1", $file_id);
  $file_data = db_fetch_object($file_q);
  if (!$file_data)
  {
    drupal_set_message('Invalid file specified.', 'error');
    return FALSE;
  }

  if (!file_exists($root_path . $file_data->filepath))
  {
    drupal_set_message(t('Error deleting !file. File does not exists.', array('!file' => $file_data->filepath)), 'error');
    return FALSE;
  }

  /* removing example file */
  if (!unlink($root_path . $file_data->filepath))
  {
    drupal_set_message(t('Error deleting !file', array('!file' => $file_data->filepath)), 'error');

    /* sending email to admins */
    $email_to = variable_get('textbook_companion_emails', '');
    $param['standard']['subject'] = "[ERROR] Error deleting file";
    $param['standard']['body'] = "Error deleting file by " . $user->uid . " at " . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] . " :
      file id : " .  $file_id . "
      file path : " . $file_data->filepath;
    if (!drupal_mail('textbook_companion', 'standard', $email_to, language_default(), $param, variable_get('textbook_companion_from_email', NULL), TRUE))
      drupal_set_message('Error sending email message.', 'error');
    return FALSE;
  } else {
    /* deleting example files database entries */
    db_query("DELETE FROM {textbook_companion_example_files} WHERE id = %d", $file_id);
    return TRUE;
  }
}

function delete_chapter($chapter_id)
{
  $status = TRUE;
  $root_path = textbook_companion_path();

  $chapter_q = db_query("SELECT * FROM {textbook_companion_chapter} WHERE id = %d", $chapter_id);
  $chapter_data = db_fetch_object($chapter_q);
  if (!$chapter_data)
  {
    drupal_set_message('Invalid chapter.', 'error');
    return FALSE;
  }

  /* deleting examples */
  $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE chapter_id = %d", $chapter_id);
  while ($example_data = db_fetch_object($example_q))
  {
    if (!delete_example($example_data->id))
      $status = FALSE;
  }

  if ($status)
  {
    $dir_path = $root_path . $chapter_data->preference_id . '/CH' . $chapter_data->number;

    if (is_dir($dir_path))
    {
      $res = rmdir($dir_path);
      if (!$res)
      {
        drupal_set_message(t('Error deleting chapter folder !folder', array('!folder' => $dir_path)), 'error');
  
        /* sending email to admins */
        $email_to = variable_get('textbook_companion_emails', '');
        $param['standard']['subject'] = "[ERROR] Error deleting folder";
        $param['standard']['body'] = "Error deleting folder " . $dir_path;
        if (!drupal_mail('textbook_companion', 'standard', $email_to, language_default(), $param, variable_get('textbook_companion_from_email', NULL), TRUE))
          drupal_set_message('Error sending email message.', 'error');
        return FALSE;
      } else {
        /* deleting chapter details from database */
        db_query("DELETE FROM {textbook_companion_chapter} WHERE id = %d", $chapter_id);
        return TRUE;
      }
    } else {
      drupal_set_message(t('Cannot delete chapter folder. !folder does not exists.', array('!folder' => $dir_path)), 'error');
      return FALSE;
    }
  }
  return FALSE;
}

function delete_book($book_id)
{
  $status = TRUE;
  $root_path = textbook_companion_path();

  $preference_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE id = %d", $book_id);
  $preference_data = db_fetch_object($preference_q);
  if (!$preference_data)
  {
    drupal_set_message('Invalid book.', 'error');
    return FALSE;
  }

  /* delete chapters */
  $chapter_q = db_query("SELECT * FROM {textbook_companion_chapter} WHERE preference_id = %d", $preference_data->id);
  while ($chapter_data = db_fetch_object($chapter_q))
  {
    if (!delete_chapter($chapter_data->id))
    {
      $status = FALSE;
    }
  }
  return $status;
}

/**
 * Implementation of hook_mail().
 */
function textbook_companion_mail($key, &$message, $params)
{
  global $user;
  $language = $message['lianguage'];
  $tbc_bcc_emails = array(
    'Bcc' => variable_get('textbook_companion_emails', ''),
  );
  switch ($key)
  {
    case 'proposal_received':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      /* initializing data */
      $proposal_q = db_query("SELECT * FROM {textbook_companion_proposal} WHERE id = %d LIMIT 1", $params['proposal_received']['proposal_id']);
      $proposal_data = db_fetch_object($proposal_q);
      $preference1_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_received']['proposal_id'], 1);
      $preference1_data = db_fetch_object($preference1_q);
      $preference2_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_received']['proposal_id'], 2);
      $preference2_data = db_fetch_object($preference2_q);
      $preference3_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_received']['proposal_id'], 3);
      $preference3_data = db_fetch_object($preference3_q);
      $user_data = user_load($params['proposal_received']['user_id']);
 
      $message['subject'] = t('[!site_name] Your book proposal has been received', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have received your following book proposal:

Full Name : ' . $proposal_data->full_name . '
Email : ' . $user_data->mail . '
Mobile : ' . $proposal_data->mobile . '
Course : ' . $proposal_data->course . '
Department/Branch : ' . $proposal_data->branch . '
University/Institute : ' .  $proposal_data->university . '
College Teacher / Professor : ' . $proposal_data->faculty . '
Reviewer : ' .  $proposal_data->reviewer . '
Expected date of completion : ' .  date('d-m-Y', $proposal_data->completion_date) . '

Your Book Preferences :

Book Preference 1 :-
Title of the book : ' . $preference1_data->book . '
Author name : ' . $preference1_data->author . '
ISBN No. : ' . $preference1_data->isbn . '
Publisher and Place : ' . $preference1_data->publisher . '
Edition : ' . $preference1_data->edition . '
Year of publication : ' . $preference1_data->year . '

Book Preference 2 :-
Title of the book : ' . $preference2_data->book . '
Author name : ' . $preference2_data->author . '
ISBN No. : ' . $preference2_data->isbn . '
Publisher and Place : ' . $preference2_data->publisher . '
Edition : ' . $preference2_data->edition . '
Year of publication : ' . $preference2_data->year . '

Book Preference 3 :-
Title of the book : ' . $preference3_data->book . '
Author name : ' . $preference3_data->author . '
ISBN No. : ' . $preference3_data->isbn . '
Publisher and Place : ' . $preference3_data->publisher . '
Edition : ' . $preference3_data->edition . '
Year of publication : ' . $preference3_data->year . '

Your proposal is under review and you will soon receive an email from us regarding the same.

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'proposal_disapproved':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      /* initializing data */
      $proposal_q = db_query("SELECT * FROM {textbook_companion_proposal} WHERE id = %d LIMIT 1", $params['proposal_disapproved']['proposal_id']);
      $proposal_data = db_fetch_object($proposal_q);
      $preference1_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_disapproved']['proposal_id'], 1);
      $preference1_data = db_fetch_object($preference1_q);
      $preference2_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_disapproved']['proposal_id'], 2);
      $preference2_data = db_fetch_object($preference2_q);
      $preference3_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND pref_number = %d LIMIT 1", $params['proposal_disapproved']['proposal_id'], 3);
      $preference3_data = db_fetch_object($preference3_q);
      $user_data = user_load($params['proposal_disapproved']['user_id']);

      $message['subject'] = t('[!site_name] Your book proposal has been disapproved', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Your following book proposal has been disapproved:

Reason for disapproval: ' . $proposal_data->message . '

Full Name : ' . $proposal_data->full_name . '
Email : ' . $user_data->mail . '
Mobile : ' . $proposal_data->mobile . '
Course : ' . $proposal_data->course . '
Department/Branch : ' . $proposal_data->branch . '
University/Institute : ' .  $proposal_data->university . '
College Teacher / Professor : ' . $proposal_data->faculty . '
Reviewer : ' .  $proposal_data->reviewer . '
Expected date of completion : ' .  date('d-m-Y', $proposal_data->completion_date) . '

Your Book Preferences :

Book Preference 1 :-
Title of the book : ' . $preference1_data->book . '
Author name : ' . $preference1_data->author . '
ISBN No. : ' . $preference1_data->isbn . '
Publisher and Place : ' . $preference1_data->publisher . '
Edition : ' . $preference1_data->edition . '
Year of publication : ' . $preference1_data->year . '

Book Preference 2 :-
Title of the book : ' . $preference2_data->book . '
Author name : ' . $preference2_data->author . '
ISBN No. : ' . $preference2_data->isbn . '
Publisher and Place : ' . $preference2_data->publisher . '
Edition : ' . $preference2_data->edition . '
Year of publication : ' . $preference2_data->year . '

Book Preference 3 :-
Title of the book : ' . $preference3_data->book . '
Author name : ' . $preference3_data->author . '
ISBN No. : ' . $preference3_data->isbn . '
Publisher and Place : ' . $preference3_data->publisher . '
Edition : ' . $preference3_data->edition . '
Year of publication : ' . $preference3_data->year . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'proposal_approved':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $proposal_q = db_query("SELECT * FROM {textbook_companion_proposal} WHERE id = %d LIMIT 1", $params['proposal_approved']['proposal_id']);
      $proposal_data = db_fetch_object($proposal_q);
      $approved_preference_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND approval_status = 1 LIMIT 1", $params['proposal_approved']['proposal_id']);
      $approved_preference_data = db_fetch_object($approved_preference_q);
      $user_data = user_load($params['proposal_approved']['user_id']);

      $message['subject'] = t('[!site_name] Your book proposal has been approved', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Your following book proposal has been approved:

Full Name : ' . $proposal_data->full_name . '
Email : ' . $user_data->mail . '
Mobile : ' .  $proposal_data->mobile . '
Course : ' . $proposal_data->course . '
Department/Branch : ' . $proposal_data->branch . '
University/Institute : ' .  $proposal_data->university . '
College Teacher / Professor : ' . $proposal_data->faculty . '
Reviewer : ' .  $proposal_data->reviewer . '
Expected date of completion : ' .  date('d-m-Y', $proposal_data->completion_date) . '

Title of the book : ' . $approved_preference_data->book . '
Author name : ' . $approved_preference_data->author . '
ISBN No. : ' . $approved_preference_data->isbn . '
Publisher and Place : ' . $approved_preference_data->publisher . '
Edition : ' . $approved_preference_data->edition . '
Year of publication : ' . $approved_preference_data->year . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'proposal_completed':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $proposal_q = db_query("SELECT * FROM {textbook_companion_proposal} WHERE id = %d LIMIT 1", $params['proposal_completed']['proposal_id']);
      $proposal_data = db_fetch_object($proposal_q);
      $approved_preference_q = db_query("SELECT * FROM {textbook_companion_preference} WHERE proposal_id = %d AND approval_status = 1 LIMIT 1", $params['proposal_completed']['proposal_id']);
      $approved_preference_data = db_fetch_object($approved_preference_q);
      $user_data = user_load($params['proposal_completed']['user_id']);

      $message['subject'] = t('[!site_name] Congratulations for completion of the book.', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Following book has been completed sucessfully by you:

Full Name : ' . $proposal_data->full_name . '
Email : ' . $user_data->mail . '
Mobile : ' .  $proposal_data->mobile . '
Course : ' . $proposal_data->course . '
Department/Branch : ' . $proposal_data->branch . '
University/Institute : ' .  $proposal_data->university . '
College Teacher / Professor : ' . $proposal_data->faculty . '
Reviewer : ' .  $proposal_data->reviewer . '
Expected date of completion : ' .  date('d-m-Y', $proposal_data->completion_date) . '

Title of the book : ' . $approved_preference_data->book . '
Author name : ' . $approved_preference_data->author . '
ISBN No. : ' . $approved_preference_data->isbn . '
Publisher and Place : ' . $approved_preference_data->publisher . '
Edition : ' . $approved_preference_data->edition . '
Year of publication : ' . $approved_preference_data->year . '

Your book is now available at following link to download.

http://scilab.in/textbook_run/' . $approved_preference_data->id . '

Now you should be able to propose a new book...

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_uploaded':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE id = %d LIMIT 1", $params['example_uploaded']['example_id']);
      $example_data = db_fetch_object($example_q);
      $user_data = user_load($params['example_uploaded']['user_id']);

      $message['subject'] = t('[!site_name] You have uploaded example', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

You have uploaded the following example:

Example number : ' . $example_data->number . '
Caption : ' .  $example_data->caption . '

The example is under review. You will be notified when it has been approved.

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_updated':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE id = %d LIMIT 1", $params['example_updated']['example_id']);
      $example_data = db_fetch_object($example_q);
      $user_data = user_load($params['example_updated']['user_id']);

      $message['subject'] = t('[!site_name] You have updated example', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

You have updated the following example:

Example number : ' . $example_data->number . '
Caption : ' .  $example_data->caption . '

The example is still under review. You will be notified when it has been approved.

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_updated_admin':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE id = %d LIMIT 1", $params['example_updated_admin']['example_id']);
      $example_data = db_fetch_object($example_q);
      $user_data = user_load($params['example_updated_admin']['user_id']);

      $message['subject'] = t('[!site_name] Reviewer have updated example', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Reviewer have updated the following example:

Example number : ' . $example_data->number . '
Caption : ' .  $example_data->caption . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_approved':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $example_q = db_query("SELECT * FROM {textbook_companion_example} WHERE id = %d LIMIT 1", $params['example_approved']['example_id']);
      $example_data = db_fetch_object($example_q);
      $user_data = user_load($params['example_approved']['user_id']);

      $message['subject'] = t('[!site_name] Your uploaded example has been approved', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Your following example has been approved:

Example number : ' . $example_data->number . '
Caption : ' .  $example_data->caption . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_disapproved':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $user_data = user_load($params['example_disapproved']['user_id']);

      $message['subject'] = t('[!site_name] Your uploaded example has been disapproved', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Your following example has been disapproved:

Example number : ' . $params['example_disapproved']['example_number'] . '
Caption : ' . $params['example_disapproved']['example_caption'] . '

Reason for dis-approval : ' . $params['example_disapproved']['message'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'example_deleted_user':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $user_data = user_load($params['example_deleted_user']['user_id']);

      $message['subject'] = t('[!site_name] User has deleted pending example', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

Your following pending example has been deleted :

Title of the Book : ' . $params['example_deleted_user']['book_title'] . '
Title of the Chapter : ' . $params['example_deleted_user']['chapter_title'] . '
Example number : ' . $params['example_deleted_user']['example_number'] . '
Caption : ' . $params['example_deleted_user']['example_caption'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'dependency_uploaded':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $user_data = user_load($params['dependency_uploaded']['user_id']);
      $dependency_files = implode(',', $params['dependency_uploaded']['dependency_names']);

      $message['subject'] = t('[!site_name] You have uploaded dependency file', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

You have uploaded following dependency files :
    ' . $dependency_files . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'feedback_received':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $user_data = user_load($params['feedback_received']['user_id']);

      $message['subject'] = t('[!site_name] We have received your feedback', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have received your following feedback

Title of the Book: ' . $params['feedback_received']['book_title'] . '
Title of the Chapter: ' . $params['feedback_received']['chapter_number'] . ' ' . $params['feedback_received']['chapter_title'] . '
Example No.: ' . $params['feedback_received']['example_no'] . '

Your feedback :
' . $params['feedback_received']['feedback'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'internshipform':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $user_data = user_load($params['internshipform']['user_id']);

      $message['subject'] = t('[!site_name] We have received your feedback', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have received your Internship Form Application for the book 

Title of the Book: ' . $params['internshipform']['book_title'] . '
Title of the Chapter: ' . $params['internshipform']['chapter_number'] . ' ' . $params['internshipform']['chapter_title'] . '
Example No.: ' . $params['internshipform']['example_no'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

case 'copyrighttransferform':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $user_data = user_load($params['copyrighttransferform']['user_id']);

      $message['subject'] = t('[!site_name] We have received your feedback', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have received your Copyright Form Application for the book 

Title of the Book: ' . $params['copyrighttransferform']['book_title'] . '
Title of the Chapter: ' . $params['copyrighttransferform']['chapter_number'] . ' ' . $params['copyrighttransferform']['chapter_title'] . '
Example No.: ' . $params['copyrighttransferform']['example_no'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

case 'undertakingform':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $user_data = user_load($params['undertakingform']['user_id']);

      $message['subject'] = t('[!site_name] We have received your feedback', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have received your Undertaking Form Application for the book 

Title of the Book: ' . $params['undertakingform']['book_title'] . '
Title of the Chapter: ' . $params['undertakingform']['chapter_number'] . ' ' . $params['undertakingform']['chapter_title'] . '
Example No.: ' . $params['undertakingform']['example_no'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

   
case 'remark':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $user_data = user_load($params['remark']['user_id']);

      $message['subject'] = t('[!site_name] A remark has been given.Please check your contact detail form', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

A Remark has been given.Please check your Contact Detail Form

Title of the Book: ' . $params['internshipform']['book_title'] . '
Title of the Chapter: ' . $params['internshipform']['chapter_number'] . ' ' . $params['internshipform']['chapter_title'] . '
Example No.: ' . $params['internshipform']['example_no'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;

    case 'cheque_sent':
      /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;

      $user_data = user_load($params['cheque_sent']['user_id']);

      $message['subject'] = t('[!site_name] We have received your feedback', array('!site_name' => variable_get('site_name', '')), $language->language);
      $message['body'] = t('
Dear !user_name,

We have Sent Cheque for the following book proposed

Title of the Book: ' . $params['cheque_sent']['book_title'] . '
Title of the Chapter: ' . $params['cheque_sent']['chapter_number'] . ' ' . $params['cheque_sent']['chapter_title'] . '
Example No.: ' . $params['cheque_sent']['example_no'] . '

Best Wishes,

!site_name', array('!site_name' => variable_get('site_name', ''), '!user_name' => $user_data->name), $language->language);
      break;


    case 'standard':
       /* bcc to textbook_companion_emails */
      $message['headers'] += $tbc_bcc_emails;
      $message['subject'] = $params['standard']['subject'];
      $message['body'] = $params['standard']['body'];
      break;
  }
}