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<?php
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// $Id: amazon_wrapper.inc,v 1.1 2006/06/27 05:38:46 eaton Exp $
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//
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// A simple wrapper for the complicated inner workings of Prometheus6's excellent amazontools.module.
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// Rather than assuming that products are always associated with nodes, this set of functions treats
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// the {amazonitem} like a cache.
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//
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// This approach makes it easier for helper modules to utilize the data even when full-fledged nodes
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// are unecessary or unwanted. Since amazon_item and amazon node types are joined to it via asin
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// rather than nid, it doesn't hurt to have extra {amazonitem} cache records around.
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function amazon_get_for_asin($asin = '', $force_lookup = FALSE, $cache = TRUE) {
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$amazon_items = amazon_get_for_asins(array($asin), $force_lookup, $cache);
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if (count($amazon_items)) {
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return $amazon_items[$asin];
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}
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return NULL;
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}
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function amazon_get_for_asins($asins = array(), $force_lookup = FALSE, $cache = TRUE) {
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$amazon_items = array();
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$to_look_up = $asins;
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if ($force_lookup) {
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$asins = array();
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}
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foreach(amazon_get_from_cache($asins) as $item) {
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$amazon_items[$item->asin] = $item;
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$to_look_up = array_diff($to_look_up, array_keys($amazon_items));
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}
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foreach(amazon_get_from_web($to_look_up, $cache) as $item) {
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$amazon_items[$item->asin] = $item;
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}
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return $amazon_items;
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}
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function amazon_get_from_web($asins = array(), $cache = TRUE) {
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$amazon_items = array();
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if (count($asins)) {
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$items = _amazon_product_data_from_Amazon(implode($asins, ','));
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if ($cache) {
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foreach($items as $item) {
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$amazon_items[$amazon_item->asin] = $item;
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amazon_cache_item($item);
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}
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}
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}
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return $amazon_items;
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}
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function amazon_get_from_cache($asins = array()) {
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$amazon_items = array();
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if (count($asins)) {
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foreach($asins as $asin) {
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$item = _amazon_product_db_data($asin);
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$amazon_items[$item->asin] = $item;
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}
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}
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return $amazon_items;
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}
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function amazon_cache_item($item) {
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if ($item->asin != '') {
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// first, wipe out any past cached amazon records.
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db_query("DELETE FROM {amazonitem} WHERE asin='%s'", $item->asin);
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// now, insert the new stuff.
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db_query("INSERT INTO {amazonitem} (asin, detailpageurl,
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smallimageurl, smallimageheight, smallimagewidth,
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mediumimageurl, mediumimageheight, mediumimagewidth,
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largeimageurl, largeimageheight, largeimagewidth,
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author, editorialreview, binding, listamount,
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listcurrencycode, listformattedprice, title,
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amount, currencycode, formattedprice, pricedate, availability)
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VALUES ('%s', '%s',
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'%s', %d, %d,
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'%s', %d, %d,
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'%s', %d, %d,
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'%s', '%s', '%s', %d,
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'%s', '%s', '%s',
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%d, '%s', '%s',
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'%s', '%s')",
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$item->asin, $item->detailpageurl,
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db_escape_string($item->smallimageurl), $item->smallimageheight, $item->smallimagewidth,
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db_escape_string($item->mediumimageurl), $item->mediumimageheight, $item->mediumimagewidth,
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db_escape_string($item->largeimageurl), $item->largeimageheight, $item->largeimagewidth,
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serialize($item->author), db_escape_string($item->editorialreview), $item->binding,
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$item->listamount,
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$item->listcurrencycode, $item->listformattedprice, $item->title,
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$item->amount ? $item->amount: $item->listamount, $item->currencycode,
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$item->formattedprice ? $item->formattedprice: $item->listformattedprice,
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date('Y-m-d H:i:s'), $item->availability);
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}
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}
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