add repost and comment function

README.md

@@ -56,6 +56,21 @@ Posts also have sequencial IDs, generated by incrementing the following key:
     INCR next_post_id => 134
 
 Every post is stored into an hash named `post:134` with the following
+fields:
+
+    user_id
+    time
+    body
+    pre
+
+Comments
+---
+
+Comments also have sequencial IDs, generated by incrementing the following key:
+
+    INCR next_comment_id => 123
+
+Every comment is stored into an hash named `comment:123` with the following
 fields:
 
     user_id

comment.php

@@ -0,0 +1,28 @@
+<?
+include("retwis.php");
+
+if (!isLoggedIn()) {
+    header("Location:".index.php);
+    exit;
+}
+
+foreach ($_POST as $key => $value){
+    if (empty($value)) {
+        $refferer = $_SERVER['HTTP_REFERER'];
+        header("Location:".$refferer);
+        exit;
+    }
+    $cid = $key;
+    $comment = $value;
+}
+
+$r = redisLink();
+$commentid = $r->incr("next_comment_id");
+$comment = str_replace("\n"," ",$comment);
+$r->hmset("comment:$commentid","user_id",$User['id'],"time",time(),"body",$comment);
+$r->lpush("comments:$cid", $commentid);
+
+$refferer = $_SERVER['HTTP_REFERER'];
+header("Location:".$refferer);
+?>
+

followers.php

@@ -0,0 +1,27 @@
+<?
+include("retwis.php");
+if (!isLoggedIn()) {
+    header("Location: index.php");
+    exit;
+}
+include("header.php");
+echo("<h2>My Followers</h2>");
+echo("<i>They are：</i><br>");
+$r = redisLink();
+$userid = $User['id'];
+$followers = $r->zrange("followers:$userid",0,-1);
+echo("<table>");
+echo("<tr>");
+$i = 0;
+foreach($followers as $followerID) {
+    if ($i % 8 == 0) {
+        echo("</tr>");
+        echo("<tr>");
+    }
+    $followerName = $r->hget("user:$followerID","username");
+    echo("<td><a class=\"username\" href=\"profile.php?u=".urlencode($followerName)."\">".utf8entities($followerName)."</a></td>");
+    $i ++;
+}
+echo("</table>");
+include("footer.php")
+?>

following.php

@@ -0,0 +1,27 @@
+<?
+include("retwis.php");
+if (!isLoggedIn()) {
+    header("Location: index.php");
+    exit;
+}
+include("header.php");
+echo("<h2>My Following</h2>");
+echo("<i>They are</i><br>");
+$r = redisLink();
+$userid = $User['id'];
+$following = $r->zrange("following:$userid",0,-1);
+echo("<table>");
+echo("<tr>");
+$i = 0;
+foreach($following as $followingID) {
+    if ($i % 8 == 0) {
+        echo("</tr>");
+        echo("<tr>");
+    }
+    $followingName = $r->hget("user:$followingID","username");
+    echo("<td><a class=\"username\" href=\"profile.php?u=".urlencode($followingName)."\">".utf8entities($followingName)."</a></td>");
+    $i ++;
+}
+echo("</table>");
+include("footer.php")
+?>

home.php

@@ -17,8 +17,8 @@
 </table>
 </form>
 <div id="homeinfobox">
-<?=$r->zcard("followers:".$User['id'])?> followers<br>
-<?=$r->zcard("following:".$User['id'])?> following<br>
+<a href="followers.php" style="text-decoration: none;"><?=$r->zcard("followers:".$User['id'])?> followers</a><br>
+<a href="following.php" style="text-decoration: none;"><?=$r->zcard("following:".$User['id'])?> following</a><br>
 </div>
 </div>
 <?

post.php

@@ -9,10 +9,12 @@
 $r = redisLink();
 $postid = $r->incr("next_post_id");
 $status = str_replace("\n"," ",gt("status"));
-$r->hmset("post:$postid","user_id",$User['id'],"time",time(),"body",$status);
+$r->hmset("post:$postid","user_id",$User['id'],"time",time(),"body",$status,"ref",-1);
 $followers = $r->zrange("followers:".$User['id'],0,-1);
-$followers[] = $User['id']; /* Add the post to our own posts too */
+$userID = $User['id'];
+$followers[] = $userID; /* Add the post to our own posts too */
 
+$r->lpush("selfPosts:$userID",$postid);
 foreach($followers as $fid) {
     $r->lpush("posts:$fid",$postid);
 }

profile.php

@@ -19,6 +19,6 @@
 ?>
 <?
 $start = gt("start") === false ? 0 : intval(gt("start"));
-showUserPostsWithPagination(gt("u"),$userid,$start,10);
+showUserPostsWithPagination(gt("u"),$userid,$start,10,"SELF");
 include("footer.php")
 ?>

repost.php

@@ -0,0 +1,35 @@
+<?
+include("retwis.php");
+
+if (!isLoggedIn()) {
+    header("Location:".index.php);
+    exit;
+}
+
+foreach ($_POST as $key => $value){
+    if (empty($value)) {
+        $value = "REPOST";
+    }
+    $cid = $key;
+    $status = $value;
+}
+$r = redisLink();
+$postid = $r->incr("next_post_id");
+$r->hmset("post:$postid","user_id",$User['id'],"time",time(),"body",$status,"ref",$cid);
+$followers = $r->zrange("followers:".$User['id'],0,-1);
+$userID = $User['id'];
+$followers[] = $userID; /* Add the post to our own posts too */
+
+$r->lpush("selfPosts:$userID",$postid);
+foreach($followers as $fid) {
+    $r->lpush("posts:$fid",$postid);
+}
+# Push the post on the timeline, and trim the timeline to the
+# newest 1000 elements.
+$r->lpush("timeline",$postid);
+$r->ltrim("timeline",0,1000);
+
+$refferer = $_SERVER['HTTP_REFERER'];
+header("Location:".$refferer);
+?>
+

retwis.php

@@ -86,6 +86,21 @@ function strElapsed($t) {
     return "$d day".($d > 1 ? "s" : "");
 }
 
+function showComment($id) {
+    $r = redisLink();
+    $comments = $r->lrange("comments:".$id, 0, -1);
+    foreach($comments as $cid) {
+        $content = $r->hgetall("comment:".$cid);
+        $userid = $content['user_id'];
+        $username = $r->hget("user:$userid","username");
+        $elapsed = strElapsed($content['time']);
+        $userlink = "<a class=\"username\" href=\"profile.php?u=".urlencode($username)."\">".utf8entities($username)."</a>";
+        $comment = utf8entities($content['body']);
+        echo("&nbsp&nbsp&nbsp".$userlink.' '.utf8entities($content['body'])."<br/>");
+        echo('&nbsp&nbsp&nbsp<i>commented '.$elapsed.' ago via web</i><br/>');
+    }
+}
+
 function showPost($id) {
     $r = redisLink();
     $post = $r->hgetall("post:$id");
@@ -95,25 +110,53 @@ function showPost($id) {
     $username = $r->hget("user:$userid","username");
     $elapsed = strElapsed($post['time']);
     $userlink = "<a class=\"username\" href=\"profile.php?u=".urlencode($username)."\">".utf8entities($username)."</a>";
-
-    echo('<div class="post">'.$userlink.' '.utf8entities($post['body'])."<br>");
-    echo('<i>posted '.$elapsed.' ago via web</i></div>');
+    $status = utf8entities($post['body']);
+    $ref = $post['ref'];
+
+    echo('<div class="post">'.$userlink.' '.$status);
+    while($ref != -1) {
+        $refpost = $r->hgetall("post:$ref");
+        if (empty($refpost)) break;
+        $refuserid = $refpost['user_id'];
+        $refusername = $r->hget("user:$refuserid","username");
+        $refelapsed = strElapsed($refpost['time']);
+        $refuserlink = "<a class=\"username\" href=\"profile.php?u=".urlencode($refusername)."\">".utf8entities($refusername)."</a>";
+        $refstatus = utf8entities($refpost['body']);
+        echo('&nbsp||&nbsp'.$refuserlink.' '.$refstatus);
+        $ref = $refpost['ref'];
+    }
+    echo('<br/>');
+    echo('<i>posted '.$elapsed.' ago via web</i>');
+?>
+<br/>
+<form method="POST">
+<table>
+<tr><td><textarea cols="70" rows="2" name=<?echo "$id";?>></textarea></td></tr>
+<tr><td align="right"><input type="submit" formaction="repost.php" value="repost">
+                      <input type="submit" formaction="comment.php" value="comment"></td></tr>
+</table>
+</form>
+<br/>
+<?
+    showComment($id);
+    echo("</div>");
     return true;
 }
 
-function showUserPosts($userid,$start,$count) {
+function showUserPosts($userid,$start,$count,$means="ALL") {
     $r = redisLink();
-    $key = ($userid == -1) ? "timeline" : "posts:$userid";
-    $posts = $r->lrange($key,$start,$start+$count);
-    $c = 0;
+    if($means != "ALL")
+        $key = "selfPosts:$userid";
+    else
+        $key = ($userid == -1) ? "timeline" : "posts:$userid";
+    $posts = $r->lrange($key,$start,$start+$count-1);
     foreach($posts as $p) {
-        if (showPost($p)) $c++;
-        if ($c == $count) break;
+        showPost($p);
     }
-    return count($posts) == $count+1;
+    return count($posts) == $count;
 }
 
-function showUserPostsWithPagination($username,$userid,$start,$count) {
+function showUserPostsWithPagination($username,$userid,$start,$count,$means="ALL") {
     global $_SERVER;
     $thispage = $_SERVER['PHP_SELF'];
 
@@ -124,7 +167,7 @@ function showUserPostsWithPagination($username,$userid,$start,$count) {
     if ($prev < 0) $prev = 0;
 
     $u = $username ? "&u=".urlencode($username) : "";
-    if (showUserPosts($userid,$start,$count))
+    if (showUserPosts($userid,$start,$count,$means))
         $nextlink = "<a href=\"$thispage?start=$next".$u."\">Older posts &raquo;</a>";
     if ($start > 0) {
         $prevlink = "<a href=\"$thispage?start=$prev".$u."\">&laquo; Newer posts</a>".($nextlink ? " | " : "");