<?php

class LogDatabaseTheme extends Themelet
{
    protected function heie($var)
    {
        if (isset($_GET[$var])) {
            return html_escape($_GET[$var]);
        } else {
            return "";
        }
    }

    protected function ueie($var)
    {
        if (isset($_GET[$var])) {
            return $var."=".url_escape($_GET[$var]);
        } else {
            return "";
        }
    }

    public function display_events($events, $page_num, $page_total)
    {
        $table = "
<style>
.sizedinputs TD INPUT {
	width: 100%;
}
</style>
<table class='zebra'>
	<thead>
		<tr><th>Time</th><th>Module</th><th>User</th><th colspan='3'>Message</th></tr>
		<form action='".make_link("log/view")."' method='GET'>
			<tr class='sizedinputs'>
				<td><input type='date' name='time-start' value='".$this->heie("time-start")."'>
				<br><input type='date' name='time-end' value='".$this->heie("time-end")."'></td>
				<td><input type='text' name='module' value='".$this->heie("module")."'></td>
				<td><input type='text' name='user' value='".$this->heie("user")."'></td>
				<td><input type='text' name='message' value='".$this->heie("message")."'></td>
				<td>
					<select name='priority'>
						<option value='".SCORE_LOG_DEBUG."'>Debug</option>
						<option value='".SCORE_LOG_INFO."' selected>Info</option>
						<option value='".SCORE_LOG_WARNING."'>Warning</option>
						<option value='".SCORE_LOG_ERROR."'>Error</option>
						<option value='".SCORE_LOG_CRITICAL."'>Critical</option>
					</select>
				</td>
				<td><input type='submit' value='Search'></td>
			</tr>
		</form>
	</thead>
	<tbody>\n";
        reset($events); // rewind to first element in array.
        
        foreach ($events as $event) {
            $c = $this->pri_to_col($event['priority']);
            $table .= "<tr style='color: $c'>";
            $table .= "<td>".str_replace(" ", "&nbsp;", substr($event['date_sent'], 0, 19))."</td>";
            $table .= "<td>".$event['section']."</td>";
            if ($event['username'] == "Anonymous") {
                $table .= "<td>".$event['address']."</td>";
            } else {
                $table .= "<td><span title='".$event['address']."'>".
                    "<a href='".make_link("user/".url_escape($event['username']))."'>".html_escape($event['username'])."</a>".
                    "</span></td>";
            }
            $table .= "<td colspan='3'>".$this->scan_entities(html_escape($event['message']))."</td>";
            $table .= "</tr>\n";
        }
        $table .= "</tbody></table>";

        global $page;
        $page->set_title("Event Log");
        $page->set_heading("Event Log");
        $page->add_block(new NavBlock());
        $page->add_block(new Block("Events", $table));
        $this->display_paginator($page, "log/view", $this->get_args(), $page_num, $page_total);
    }

    protected function get_args()
    {
        $args = "";
        // Check if each arg is actually empty and skip it if so
        if (strlen($this->ueie("time-start"))) {
            $args .= $this->ueie("time-start")."&";
        }
        if (strlen($this->ueie("time-end"))) {
            $args .= $this->ueie("time-end")."&";
        }
        if (strlen($this->ueie("module"))) {
            $args .= $this->ueie("module")."&";
        }
        if (strlen($this->ueie("user"))) {
            $args .= $this->ueie("user")."&";
        }
        if (strlen($this->ueie("message"))) {
            $args .= $this->ueie("message")."&";
        }
        if (strlen($this->ueie("priority"))) {
            $args .= $this->ueie("priority");
        }
        // If there are no args at all, set $args to null to prevent an unnecessary ? at the end of the paginator url
        if (strlen($args) == 0) {
            $args = null;
        }
        return $args;
    }

    protected function pri_to_col($pri)
    {
        switch ($pri) {
            case SCORE_LOG_DEBUG: return "#999";
            case SCORE_LOG_INFO: return "#000";
            case SCORE_LOG_WARNING: return "#800";
            case SCORE_LOG_ERROR: return "#C00";
            case SCORE_LOG_CRITICAL: return "#F00";
            default: return "";
        }
    }

    protected function scan_entities($line)
    {
        $line = preg_replace_callback("/Image #(\d+)/s", [$this, "link_image"], $line);
        return $line;
    }

    protected function link_image($id)
    {
        $iid = int_escape($id[1]);
        return "<a href='".make_link("post/view/$iid")."'>Image #$iid</a>";
    }
}