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<?php
page_header(lang('Database schema'), "", array(), DB);

$table_pos = array();
$table_pos_js = array();
// saved in one cookie because there is a limit of 20 cookies per domain
preg_match_all('~([^:]+):([-0-9.]+)x([-0-9.]+)(_|$)~', $_COOKIE["adminer_schema"], $matches, PREG_SET_ORDER); //! ':' in table name
foreach ($matches as $i => $match) {
$table_pos[$match[1]] = array($match[2], $match[3]);
$table_pos_js[] = "\n\t'" . addcslashes($match[1], "\r\n'\\/") . "': [ $match[2], $match[3] ]";
}

$top = 0;
$base_left = -1;
$schema = array(); // table => array("fields" => array(name => field), "pos" => array(top, left), "references" => array(table => array(left => array(source, target))))
$referenced = array(); // target_table => array(table => array(left => target_column))
$lefts = array(); // float => bool
foreach (table_status() as $row) {
if (!isset($row["Engine"])) { // view
continue;
}
$pos = 0;
$schema[$row["Name"]]["fields"] = array();
foreach (fields($row["Name"]) as $name => $field) {
$pos += 1.25;
$field["pos"] = $pos;
$schema[$row["Name"]]["fields"][$name] = $field;
}
$schema[$row["Name"]]["pos"] = ($table_pos[$row["Name"]] ? $table_pos[$row["Name"]] : array($top, 0));
if (fk_support($row)) {
foreach (foreign_keys($row["Name"]) as $val) {
if (!$val["db"]) {
$left = $base_left;
if ($table_pos[$row["Name"]][1] || $table_pos[$val["table"]][1]) {
$left = min(floatval($table_pos[$row["Name"]][1]), floatval($table_pos[$val["table"]][1])) - 1;
} else {
$base_left -= .1;
}
while ($lefts[(string) $left]) {
// find free $left
$left -= .0001;
}
$schema[$row["Name"]]["references"][$val["table"]][(string) $left] = array($val["source"], $val["target"]);
$referenced[$val["table"]][$row["Name"]][(string) $left] = $val["target"];
$lefts[(string) $left] = true;
}
}
}
$top = max($top, $schema[$row["Name"]]["pos"][0] + 2.5 + $pos);
}

?>
<div id="schema" style="height: <?php echo $top; ?>em;">
<script type="text/javascript">
tablePos = {<?php echo implode(",", $table_pos_js) . "\n"; ?>};
em = document.getElementById('schema').offsetHeight / <?php echo $top; ?>;
document.onmousemove = schemaMousemove;
document.onmouseup = schemaMouseup;
</script>
<?php
foreach ($schema as $name => $table) {
echo "<div class='table' style='top: " . $table["pos"][0] . "em; left: " . $table["pos"][1] . "em;' onmousedown='schemaMousedown(this, event);'>";
echo '<a href="' . h(ME) . 'table=' . urlencode($name) . '"><b>' . h($name) . "</b></a><br>\n";
foreach ($table["fields"] as $field) {
$val = '<span' . type_class($field["type"]) . ' title="' . h($field["full_type"] . ($field["null"] ? " NULL" : '')) . '">' . h($field["field"]) . '</span>';
echo ($field["primary"] ? "<i>$val</i>" : $val) . "<br>\n";
}
foreach ((array) $table["references"] as $target_name => $refs) {
foreach ($refs as $left => $ref) {
$left1 = $left - $table_pos[$name][1];
$i = 0;
foreach ($ref[0] as $source) {
echo "<div class='references' title='" . h($target_name) . "' id='refs$left-" . ($i++) . "' style='left: $left1" . "em; top: " . $table["fields"][$source]["pos"] . "em; padding-top: .5em;'><div style='border-top: 1px solid Gray; width: " . (-$left1) . "em;'></div></div>\n";
}
}
}
foreach ((array) $referenced[$name] as $target_name => $refs) {
foreach ($refs as $left => $columns) {
$left1 = $left - $table_pos[$name][1];
$i = 0;
foreach ($columns as $target) {
echo "<div class='references' title='" . h($target_name) . "' id='refd$left-" . ($i++) . "' style='left: $left1" . "em; top: " . $table["fields"][$target]["pos"] . "em; height: 1.25em; background: url(../adminer/static/arrow.gif) no-repeat right center;'><div style='height: .5em; border-bottom: 1px solid Gray; width: " . (-$left1) . "em;'></div></div>\n";
}
}
}
echo "</div>\n";
}
foreach ($schema as $name => $table) {
foreach ((array) $table["references"] as $target_name => $refs) {
foreach ($refs as $left => $ref) {
$min_pos = $top;
$max_pos = -10;
foreach ($ref[0] as $key => $source) {
$pos1 = $table["pos"][0] + $table["fields"][$source]["pos"];
$pos2 = $schema[$target_name]["pos"][0] + $schema[$target_name]["fields"][$ref[1][$key]]["pos"];
$min_pos = min($min_pos, $pos1, $pos2);
$max_pos = max($max_pos, $pos1, $pos2);
}
echo "<div class='references' id='refl$left' style='left: $left" . "em; top: $min_pos" . "em; padding: .5em 0;'><div style='border-right: 1px solid Gray; margin-top: 1px; height: " . ($max_pos - $min_pos) . "em;'></div></div>\n";
}
}
}
?>
</div>
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