<?php

function apk_browser_install() {
    /*
     * Alpine packages are stored as nodes.
     * To make sure we have content type we
     * create it with hook install so its a
     * system content type which cannot be
     * deleted.
     */
    // use get_t() to get the name of our localization function for translation
    // during install, when t() is not available.
    $t = get_t();
    //basic new node settings
    $node_fields = array(
        'type' => 'apk', //machine name
        'name' => 'Alpine package', // human name
        'base' => 'node_content', //api callback
        'description' => $t('Content type to store Alpine Linux packages'),
        'title_label' => $t('Package'),
        //'has_title' => FALSE
    );
    //set missing defaults and save the node type
    $content_type = node_type_set_defaults($node_fields);
    node_type_save($content_type);

    /* 
     * Create all the fields and instances we are adding to our content type.
     */
    foreach (_apk_browser_field_vars() as $name => $fvars) {
        $cardinality = ($name == 'apk_depends') ? '-1' : '1';
        if (!field_info_field($name)) {
            $field = array(
                'field_name' => $name,
                'cardinality' => $cardinality,
                'type' => 'text',
                'settings' => array(
                    'max_length' => $fvars['length'],
                ),
                
            );
            field_create_field($field);
        }
        // now all instances
        if (!field_info_instance('node', $name, 'apk')) {
            $instance = array(
                'field_name' => $name,
                'label' => $fvars['label'],
                'type' => 'text',
                'entity_type' => 'node',
                'bundle' => 'apk',
                'widget' => array(
                    'type' => 'text_textfield',
                ),
                'display' => array(
                    'default' => array(
                        'label' => 'inline'
                    )
                )
            );
            field_create_instance($instance);
        }
    }

    /*
     * Create taxonamy vocab
     * create table and asign it
     */
    $vnames = array(
       'repo' => $t('Repository') ,
       'arch' => $t('Architecture')
    );
    foreach ($vnames as $vname => $desc) {
        $fieldname = 'taxonomy_apk_' . $vname;
        $machinename = 'apk_' . $vname;
        $vedit = array(
            'name' => $desc,
            'description' => $t('@desc taxonomy', array('@desc' => $desc)),
            'machine_name' => $machinename
        );
        if (taxonomy_vocabulary_save((object) $vedit)) {
            if (!field_info_field($fieldname)) {
                $field = array(
                    'field_name' => $fieldname,
                    'type' => 'taxonomy_term_reference',
                    //sets the number of terms which can be selected
                    'cardinality' => '1',
                    'settings' => array(
                        'allowed_values' => array(
                            array(
                                'vocabulary' => $machinename,
                                'parent' => 0,
                            ),
                        ),
                    ),
                );
                field_create_field($field);
            }
            if (!field_info_instance('node', $fieldname, 'taxonomy_term_reference')) {
                $instance = array(
                    'field_name' => $fieldname,
                    'entity_type' => 'node',
                    'label' => $desc,
                    'bundle' => 'apk',
                    'required' => TRUE,
                    'widget' => array(
                        'type' => 'options_select',
                    )
                );
                field_create_instance($instance);
            }
        }
    }
}

//cleanup database, removing all apk entries
function apk_browser_uninstall() {
    $nfields = array_keys(_apk_browser_field_vars());
    /* delete all apk nodes.
     * disabled because too slow
     * $nodes = db_select('node')
     *      ->fields('node', array('nid'))
     *       ->condition('type', 'apk')
     *       ->execute()
     *       ->fetchAll();
     * foreach ($nodes as $node) {
     *   node_delete($node->nid);
     * }
     */
    //delete the content type
    node_type_delete('apk');
    //delete the apk node fields
    foreach ($nfields as $nfield) {
        field_delete_field($nfield);
    }
    //delete all apk related instaces
    $instances = field_info_instances('node', 'apk');
    foreach ($instances as $instance) {
        field_delete_instance($instance, TRUE);
    }
    field_delete_field('taxonomy_apk_repo');
    field_delete_field('taxonomy_apk_arch');
    //delete taxonomy
    $vocabulary = taxonomy_vocabulary_machine_name_load('apk_arch');
    if ($vocabulary) {
        taxonomy_vocabulary_delete($vocabulary->vid);
    }
    $vocabulary = taxonomy_vocabulary_machine_name_load('apk_repo');
    if ($vocabulary) {
        taxonomy_vocabulary_delete($vocabulary->vid);
    }
    db_delete('variable')->condition('name', 'apk_%%', 'LIKE')->execute();
}

/*
 * functions which return apk browser
 * structure and variables will be used
 * for install and uninstall
 */

function _apk_browser_field_vars() {
    $t = get_t();
    //return array of fields variables
    return array(
/*
 * use node title as package name
        'apk_name' => array(
            'label' => $t('Package'),
            'length' => '255'
        ), 
 */
        'apk_checksum' => array(
            'label' => $t('Checksum'),
            'length' => '255'
        ),
        'apk_version' => array(
            'label' => $t('Version'),
            'length' => '255'
        ),
        'apk_size' => array(
            'label' => $t('Size'),
            'length' => '255'
        ),
        'apk_isize' => array(
            'label' => $t('Installed size'),
            'length' => '255'
        ),
        'apk_description' => array(
            'label' => $t('Description'),
            'length' => '1000'
        ),
        'apk_url' => array(
            'label' => $t('URL'),
            'length' => '255'
        ),
        'apk_license' => array(
            'label' => $t('License'),
            'length' => '255'
        ),
        'apk_depends' => array(
            'label' => $t('Dependencies'),
            'length' => '255'
        )
    );
}