module mspatest;

import std.string, sqlite3, std.boehm, std.zlib, std.http, std.util, std.file;

static import c.stdlib;
import std.fun, std.cgi, std.process;

import mspa;

alias FOURSTRING = (string, string, string, string); // small shortcut
alias FIVESTRING = (string, string, string, string, string);

string filterTag(string tag) {
  char[auto~] filtered-tagname;
  for auto ch <- tag {
    if ch >= "a" && ch <= "z" || ch >= "A" && ch <= "Z" || ch >= "0" && ch <= "9"
      || "_- .,".find(""~ch) != -1
      filtered-tagname ~= ch;
  }
  return filtered-tagname[];
}

string getThreadName(string url) {
  url = url.between("?", "");
  if (auto first = url.between("", "/")) url = first;
  return url.between("-", "");
}

int counter;
string reformatPost(string content, bool spoilers, string idText, bool linkToAnchors, noNyud = false) {
  /* strip out existing anchor links */
  do {
    auto startpos = content.find("#post");
  } while (startpos) {
    content = content[0 .. startpos] ~ "\"" ~ content[startpos .. $].between("\"", "");
  }
  if (linkToAnchors) {
    content = content.replace("href=\"showthread.php?p=", "href=\"#post");
  } else {
    content = content.replace("href=\"showthread.php?p=", "href=\"$idText");
  }
  string startMarker = "<!-- BEGIN TEMPLATE: bbcode_quote";
  string endMarker   = "<!-- END TEMPLATE: bbcode_quote";
  string handleQuotes(string str) {
    do {
      auto quotePos = str.find(startMarker);
      auto endPos = str.find(endMarker);
    } while (quotePos && endPos && quotePos < endPos) {
      auto startPos = quotePos + startMarker.length;
      while (str[startPos .. endPos].find startMarker) != -1 {
        str = str[0 .. startPos] ~ handleQuotes str[startPos .. $]; // recurse
        endPos = str.find(endMarker);
        if (endPos == -1) {
          raise new Error "end marker no longer found after recursion step! unbalanced? $content";
        }
      }
      auto end = int:endPos;
      end += str[end .. $].find(">") + 1;
      auto quote = str[quotePos .. end];
      auto name = quote.between("<strong>", "</strong>");
      auto ref = quote.between("href=\"", "\"");
      auto msg = quote.between("class=\"message\">", "\t\t</div");
      auto newtext = "<table><tr><td valign=\"top\">&gt;</td><td><div style=\"border: 1px solid; \"><div><span style=\"border-bottom: 1px solid; \">Originally posted by <a href=\"$ref\">$name</a></span></div>";
      newtext = "$newtext$msg</td></tr></table>";
      str = str[0..quotePos] ~ newtext ~ str[end .. $];
    }
    return str;
  }
  string nyudImages(string src, string baseUrl) {
    int offset;
    do {
      int srcpos = src[offset .. $].find("src=\"");
    } while (srcpos != -1) {
      srcpos += offset;
      srcpos += 5;
      int endpos = src[srcpos .. $].find("\"");
      if (endpos == -1) raise new Error "Unterminated img src string wtf!! ";
      endpos += srcpos;
      auto tag = src[srcpos .. endpos];
      tag = baseUrl.followLink tag;
      tag = tag.startsWith "http://";
      tag = "http://" ~ slice(&tag, "/") ~ ".nyud.net/" ~ tag; // lol side effect abuse
      src = src[0 .. srcpos] ~ tag ~ src[endpos .. $];
      offset = srcpos + tag.length;
    }
    return src;
  }
  content = handleQuotes content;
  if (!noNyud) content = nyudImages (content, "http://www.mspaforums.com/");
  do {
    auto spoilerpos = content.find spoilertext;
  } while spoilerpos != -1 {
    string replacement;
    if (spoilers) {
      replacement = `<div style="border: 1px solid gray; padding: 1px; margin: 2px; "><span style="border: 1px dotted; ">Spoiler</span><div>`;
    } else {
      int id = counter ++;
      replacement = `<div style="border: 1px solid gray; padding: 1px; margin: 2px; "><span style="border: 1px dotted; ">
      <span class="box" id="??C_plus" onclick="javascript: css_show('??C'); css_show('??C_minus'); css_hide('??C_plus'); ">Show Spoiler</span>
      <span class="box" id="??C_minus" onclick="javascript: css_hide('??C'); css_show('??C_plus'); css_hide('??C_minus'); " style="display: none; ">Hide spoiler</span>
      </span><div id="??C" style="display: none; ">`.replace("??C", "spoilerdiv$id");
    }
    content = content[0..spoilerpos] ~ replacement ~ content[spoilerpos + spoilertext.length .. $];
  }
  content = content.replace("src=\"images/smilies", "src=\"http://www.mspaforums.com/images/smilies");
  content = content.replace("<b>", "<div class=\"inline bold\">").replace("</b>", "</div>");
  return content;
}

// prevent google from following links that potentially go to very large pages
alias sharedCSS = `
  <meta name="robots" content="index, nofollow" />
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
  <link rel="shortcut icon" href="favicon.ico" />
 <style type="text/css">
    table.boxed {
      border: 1px solid black;
      border-collapse: collapse;
    }
    th {
      border-bottom: 2px solid black;
    }
    th.first, th.mid, td.first, td.mid {
      border-right: 1px solid gray;
    }
    tr.even {
      background-color: #def;
    }
    div.plustag:hover *.hidden {
      visibility: visible;
    }
    div.minustag:hover *.hidden {
      visibility: visible;
    }
    div.inline {
      display: inline;
    }
    *.bold {
      font-weight: bold;
    }
    *.box {
      border: 1px solid;
      background-color: #fff;
      padding: 0px 2px 0px 2px;
      margin: 1px;
    }
    *.box_outer {
      border: 1px solid;
      background-color: #fff;
      padding: 0px 2px 0px 2px;
      margin: 5px;
    }
    *.box_inner {
      border: 1px solid;
      padding: 0px 2px 0px 2px;
      margin: 1px;
      background-color: #efe;
    }
    *.hidden {
      visibility: hidden;
      position: absolute;
      background-color: #ddd;
    }
    div.mewdiv {
      position: absolute;
      display: inline;
      background-color: #eef;
      visibility: hidden;
      width: 60%; height: 90%;
    }
    table.mewtable {
      width: 100%; height: 100%;
      border-collapse: collapse;
    }
    iframe.mewframe {
      width: 100%; height: 100%;
      background-color: #ffe;
    }
    </style>`;

alias sharedJS = `
  <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
  <script type="text/javascript">
    function submitForm(name) {
      document.getElementById(name).submit();
    }
    function loadFrame(name, divname, url) {
      $('.mewdiv').css('visibility', 'hidden');
      var frame = document.getElementById(name), div = document.getElementById(divname);
      frame.src = url;
      div.style.visibility = "visible";
      scrollToThingy (div);
    }
    function scrollToThingy (thing) {
      var targetY = 0;

      while (thing) {
        targetY += thing.offsetTop;
        thing = thing.offsetParent;
      }
      window.scroll(0, targetY);
    }
    function css_show (name) {
      document.getElementById(name).style.display = "inline";
    }
    function css_hide (name) {
      document.getElementById(name).style.display = "none";
    }
  </script>`;

import c.stdio, std.time;

extern(C) { int fprintf(void*, char*, ...); void* stderr; }

void main(string[] args) {
  sqlite3.profile = false;
  bool wroteHeader;
  void writeHTMLHeader(bool doctype = true) {
    if (wroteHeader) return;
    writeln "Content-type: text/html; charset=utf-8";
    writeln "";
    if (doctype) {
      writeln `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">`;
      writeln `<html xmlns="http://www.w3.org/1999/xhtml">`;
    } else {
      writeln `<html>`;
    }
    wroteHeader = true;
  }
  set-handler (Error err) {
    writeHTMLHeader();
    writeln "<head><title>Error</title></head><body>";
    writeln "<h2>An error has occurred! </h2>";
    writeln "$err";
    writeln "</body></html>";
    invoke-exit "return";
  }
  set-handler (SQLiteBusy) {
    fprintf(FILE*:stderr, "Database busy. \n");
    sleep 1;
    fprintf(FILE*:stderr, "Retrying. \n");
    invoke-exit "retry";
  }
  define-exit "return" return;
  initBoehm();
  auto db = new Database "threads.sqlite3";
  onExit db.close;
  db.mkfast;

  onSuccess if sqlite3.profile {
    void errprint(string s) fprintf(FILE*:stderr, toStringz "$s\n");
    errprint "profile: ";
    for auto tup <- profiledata {
      errprint "  $(tup[2]): $(tup[1]): $(tup[0])";
    }
  }

  string getEnvVar(string name) {
    return CToString c.stdlib.getenv toStringz name;
  }
  auto query_string = getEnvVar "QUERY_STRING";
  auto http_cookie = getEnvVar "HTTP_COOKIE";
  // lol wtf
  while (query_string.find("&amp;") != -1) {
    query_string = query_string.replace("&amp;", "&");
  }
  (string, string)[auto~] params;
  for auto part <- query_string.split "&" {
    if (part.find("=") != -1)
      params ~= slice(part, "=");
    else
      params ~= (part, "");
  }
  void processCookie() {
    if (http_cookie) {
      (string, string)[auto~] cookieparts;
      for auto part <- http_cookie.split(";") {
        auto name = slice(&part, "=");
        cookieparts ~= (strip name, strip part);
      }
      for (string name, string value) <- cookieparts if name == "idmask" {
        bool hit;
        for int i <- 0..params.length if !hit {
          if (params[i][0] == "idmask") {
            params[i][1] = "$value";
            hit = true;
          }
        }
        if !hit params ~= ("idmask", "$value");
      }
    }
  }
  string getParam(string name, deflt = null) {
    for auto par <- params
      if (par[0] == name) return par[1].urldecode();
    return deflt;
  }
  void removeParam(string name) {
    (string, string)[auto~] newparams;
    for auto par <- params
      if (par[0] != name) newparams ~= par;
    params = newparams;
  }
  bool noNyud = getParam("nyud") == "0";
  string urlWithParams((string, string)[] array) {
    string[auto~] res;
    auto handledEntries = new bool[] array.length;
    for auto par <- params {
      bool foundReplacement;
      for (int i, (string, string) tup) <- zip(ints, array) if !foundReplacement {
        if (par[0] == tup[0]) {
          if (tup[1]) res ~= "$(tup[0])=$(tup[1])";
          handledEntries[i] = true;
          foundReplacement = true;
        }
      }
      if !foundReplacement res ~= "$(par[0])=$(par[1])";
    }
    for (int i, bool handled) <- zip(ints, handledEntries)
      if !handled res ~= "$(array[i][0])=$(array[i][1])";
    return "?" ~ join!(string[auto~], string)(res, "&amp;");
  }
  string urlWithParam(string name, value) {
    return urlWithParams [(name, value)];
  }

  string authormask, authormask-sql = "and not length(?)";
  if auto author = getParam "author" {
    auto alts = author.split("|");
    int offs;
    authormask = author;
    authormask-sql = "select ? AUTHORMASK where 0";
    for auto alt <- alts {
      authormask-sql ~= " or posts.name = substr(AUTHORMASK, $(offs+1), $(alt.length))";
      offs += alt.length + 1; // for "|"
    }
    authormask-sql = "and exists ($authormask-sql)";
  }
  string threadmask, threadmask-sql = "and not length(?)";
  if auto thread = getParam "thread" {
    threadmask = thread;
    threadmask-sql = "and thread_ids.thread_id = ?";
  }
  string tagmask, tagmask-sql = "and not length(?)";
  if auto tag = getParam "tag" {
    tagmask = tag;
    tagmask-sql = "and tags.tag = ?";
  }
  bool textmask;
  string textmask-sql = "where 1";
  if "yes" == getParam ("noTextPosts", "no") {
    textmask = true;
    textmask-sql = "join image_post on thread_ids.msgid = image_post.msgid where 1";
  }
  string idmask, idmask-sql = "and not length(?)";
  if auto id = getParam "idmask" {
    idmask-sql = "select ? IDMASK where 0";
    while (id.length) {
      if (auto rest = id.startsWith "from_") {
        int from = atoi slice(&rest, "_");
        id = rest;
        auto start = idmask.length;
        idmask ~= "$from";
        auto len = idmask.length - start;
        idmask-sql ~= " or abs(posts.msgid) >= abs(substr(IDMASK, $(start+1), $(len)))";
      } else {
        raise new Error "Invalid id: $id (cookie $http_cookie)";
      }
    }
    idmask-sql = "and exists ($idmask-sql)";
  }
  int count = -1;
  if auto c = getParam "count"
    count = atoi c;

  bool showSpoilers;
  if (getParam("spoilers") == "visible") showSpoilers = true;

  void writeSiteHeader(bool handleSpoilers, linkToOverview, linkToList, linkToFullView, showRSS = true, floatIt = true, showFilters = true, string additionalText = null) {
    if (floatIt) writeln "<div style=\"background-color: #eef; position: fixed; top: 0px; border: 1px solid; \">";
    else writeln "<div style=\"background-color: #eef; border: 1px solid; \">";

    bool firstLine = true;
    int linecount;
    void myWriteLine(string msg, bool sameLine = false) {
      if (firstLine) { firstLine = false; linecount = 1; }
      else if (!sameLine) {
        writeln "<br />";
        linecount ++;
      }
      writeln msg;
    }
    if (linkToOverview) myWriteLine "<a href=\"$(urlWithParam(\"site\", \"main\"))\">Back to overview</a>&nbsp;|&nbsp;";
    if (handleSpoilers) {
      string spoiler-change;
      if showSpoilers {
        spoiler-change = "<a href=\"$(urlWithParam(\"spoilers\", null))\">Hide Spoilers</a>&nbsp;";
      } else {
        spoiler-change = "<a href=\"$(urlWithParam(\"spoilers\", \"visible\"))\">Always Show Spoilers</a>&nbsp;|";
      }
      myWriteLine ("$spoiler-change", true);
    }
    if (linkToList) myWriteLine ("<a href=\"$(urlWithParam(\"site\", \"overview\"))\">Go to post list</a> |", true);
    if (linkToFullView) myWriteLine ("<a href=\"$(urlWithParams [(\"site\", \"full-html\"), (\"count\", \"50\")])\">
      Go to full HTML view</a>&nbsp;|", true);
    if (showRSS) myWriteLine ("<a href=\"$(urlWithParams [(\"site\", \"rss\"), (\"count\", string:null)])\">RSS</a>&nbsp;|", true);
    myWriteLine ("<a href=\"$(urlWithParam(\"noTextPosts\", \"yes\"))\">No Text Posts</a>", true);
    myWriteLine (additionalText, true);
    if (showFilters) {
      if (authormask) {
        myWriteLine "Filter by author: $authormask (<a href=\"$(urlWithParam(\"author\", null))\">remove</a>)";
      }
      if (threadmask) {
        myWriteLine "Filter by thread: $threadmask (<a href=\"$(urlWithParam(\"thread\", null))\">remove</a>)";
      }
      if (tagmask) {
        myWriteLine "Filter by tag: $tagmask (<a href=\"$(urlWithParam(\"tag\", null))\">remove</a>)";
      }
      if (idmask) {
        myWriteLine "Only show posts after $idmask (<a href=\"$(urlWithParam(\"id\", null))\">remove</a>)";
      }
      if (count != -1) {
        myWriteLine "Only show $count posts (<a href=\"$(urlWithParam(\"count\", null))\">remove</a>)";
      }
      if (textmask) {
        myWriteLine "Filter: show only image posts (<a href=\"$(urlWithParam(\"noTextPosts\", null))\">remove</a>)";
      }
    }
    writeln "</div>";
    if floatIt
      for 0..linecount
        writeln "<br style=\"clear: both; \" />";
  }

  void writeFooter() {
    writeln "<div style=\"color: #aaa; font-size: 70%; \">disclaimer: all copyrights remain with the respective owners. this site acts merely as a caching layer for mspaforums.com and tgchan.org;
      the creator disclaims all liability for the site itself or the content displayed within. </div>";
  }

  auto site = getParam ("site");
  if (!site || site == "main") {
    removeParam("id"); // cleanup
    writeHTMLHeader();
    writeln "<head><title>Thread Overview</title>";
    writeln sharedCSS;
    writeln sharedJS;
    writeln "</head><body>";
    onSuccess {
      p \{
        a.href "http://validator.w3.org/check?uri=referer"
          $img #.src "http://www.w3.org/Icons/valid-xhtml10" #.alt "Valid XHTML 1.0 Transitional" #.height 31 #.width 88;
        a.href "http://jigsaw.w3.org/css-validator/check/referer"
          $img #.style "border:0;width:88px;height:31px" #.src "http://jigsaw.w3.org/css-validator/images/vcss" #.alt "Valid CSS!";
        $img #.src "valid-rss-rogers.png" #.height 31 #.alt "RSS feeds validated";
      }
      writeFooter();
      writeln "</body></html>";
    }

    writeln "<div>";
    writeSiteHeader(handleSpoilers => false, linkToOverview => false, linkToList => true, linkToFullView => true, showRSS => eval authormask || threadmask || tagmask);
    writeln "</div>";

    writeln "<p>";
    (string, string)[] postParams;
    string getPostParam(string name, deflt = null) {
      for auto par <- postParams
        if (par[0] == name) return par[1];
      return deflt;
    }
    if (getEnvVar "REQUEST_METHOD") == "POST" {
      auto postText = string: join readfile 0;
      // wtf some more
      while (postText.find("&amp;") != -1) {
        postText = postText.replace("&amp;", "&");
      }
      // writeln "Post mode <br />";
      // writeln "$postText";
      for auto part <- postText.split "&" {
        (string name, string value) = slice(part, "=");
        value = urldecode value;
        postParams ~= (name, value);
      }
      auto action = getPostParam("action");
      if (action == "add_tag") {
        string tagname = filterTag getPostParam "tagname";
        if (!tagname.length)
          writeln "Tag invalid! debug $postParams";
        else {
          int threadId = getPostParam "threadId" #.atoi();

          db.exec("insert or replace into tags(thread_id, tag) values(?, ?)", threadId, tagname);
        }
      }
      if (action == "rm_tag") {
        string tagname = filterTag getPostParam "tagname";
        if (!tagname.length)
          writeln "Tag invalid! ";
        else {
          int threadId = getPostParam "threadId" #.atoi();

          db.exec("delete from tags where thread_id=? and tag=?", threadId, tagname);
        }
      }
      if (action == "add_thread") {
        string url = getPostParam "url";
        string[] tags = getPostParam "tags" #.split "," #.map &strip #.eval[];
        void addThread(string url) {
          db.exec("insert or replace into page_urls (msgid, page_url) values(null, ?)", url);
        }
        void update(string[] urls) {
          join readback("./mspa_update.sh", urls);
        }
        void setTags(string url) {
          eval int id <- db.exec("select distinct thread_id from page_urls left outer join thread_ids where page_url = ? and page_urls.msgid = thread_ids.msgid", url);
          if tags.length && tags[0] {
            db.exec("delete from tags where thread_id = ?", id);
            for auto tag <- tags
              db.exec("insert or replace into tags(thread_id, tag) values(?, ?)", id, tag);
          }
        }
        if (url.find("tgchan.org/wiki/")) {
          auto links = string: url.downloadCached() #.betweens("href=\"", "\"") #.select \(string s) -> s.find "tgchan.org/kusaba/quest/" #.eval;
          for auto link <- links addThread (link);
          update links[];
          for auto link <- links setTags (link);
          writeln "$(links.length) threads added! ";
        } else if (!url.startsWith("http://www.mspaforums.com/showthread.php?") && !url.startsWith "http://tgchan.org/kusaba/") {
          writeln "Can only submit MSPA or tgchan threads/wiki pages! ";
        } else {
          if (auto base = url.between("", "/page")) url = base;
          addThread (url);
          update [url];
          setTags (url);
          writeln "Thread added!";
        }
      }
    }
    writeln "</p>";

    form #.action "?site=main" #.method "post" p \{
      text "URL";
      input #.type "text" #.name "url" #.size 40;
      input #.type "submit" #.value "Add Thread";
      br;
      text "Tags";
      input #.type "text" #.name "tags" #.size 28;
      input #.type "hidden" #.name "action" #.value "add_thread";
    }
    p \{
      writeln "Hint: You can add Tags to threads! To do this, use the + symbol next to the threads. Then, by clicking on the tag name, you can select only threads that have the same tag."; br;
      writeln "This is useful if you want to follow a quest that spans multiple threads."; br;
    }

    writeln "<table class=\"boxed\">";
    onSuccess writeln "</table>";
    tr \{
      th #.class "first" "Thread";
      th #.class "mid" "Starter";
      th #.class "mid" "Posts";
      th #.class "mid" "First post date";
      th #.class "mid" "Last post date";
      th #.class "last" "Tags";
    }

    auto evenodd_iter = loop ["even", "odd"];
    int formid;

    if (getParam("hax") == "yes") {
      for (int msgid, ubyte[] data) <- db.exec "select msgid, content from content" {
        auto pureText = removeSpoilers string: inflate data;
        bool hasVisiblePics = eval pureText.find("img src=\"http") != -1;
        if (hasVisiblePics) {
          db.exec("insert or replace into image_post (msgid) values(?)", msgid);
        } else {
          db.exec("insert or replace into text_post (msgid) values(?)", msgid);
        }
      }
      return;
    }

    for (string thread, int thread_id, string threadname) <- db.exec ("
      select page_url, A.thread_id, titles.title from (
        select thread_ids.thread_id, thread_ids.msgid from thread_ids
        left outer join tags on thread_ids.thread_id = tags.thread_id
        $textmask-sql $tagmask-sql $threadmask-sql
        group by thread_ids.thread_id
      ) A
      join page_urls B on A.msgid=B.msgid
      join posts on A.msgid=posts.msgid
      left outer join titles on A.thread_id=titles.thread_id
      order by A.thread_id desc", tagmask, threadmask)
    {
      (thread, string bogus) = slice(thread, "/page");

      if (!threadname)
        threadname = getThreadName thread;

      db.openStatementList();
      eval (string threadStarter, int threadStarterId) <- db.exec("
        select name, A.msgid from thread_ids A
          join postnums B on A.msgid = B.msgid
          join posts C on A.msgid = C.msgid
          where A.thread_id=? and B.postnr=1", thread_id);

      if (!authormask || authormask == threadStarter) {
        eval int posts <- db.exec("select count(*) from thread_ids join posts on thread_ids.msgid = posts.msgid $textmask-sql and thread_id=? $authormask-sql", thread_id, authormask);

        eval int maxPostNum <- db.exec("
          select max(postnr) from thread_ids A
            join posts on A.msgid = posts.msgid
            join postnums B on A.msgid = B.msgid
            where thread_id=? $authormask-sql", thread_id, authormask);
        eval string firstDate <- db.exec ("select date from posts where msgid=? $authormask-sql", threadStarterId, authormask);
        eval (string lastDate, int lastDateId) <- db.exec("
          select posts.date, posts.msgid from thread_ids A
          join postnums B on A.msgid = B.msgid
          join posts on A.msgid = posts.msgid
          where A.thread_id=? and B.postnr=? $authormask-sql", thread_id, maxPostNum, authormask);

        string[auto~] tags;
        for string tag <- db.exec("select tag from tags where thread_id = ?", thread_id)
          tags ~= tag.dup;
        string genTag(string tag) {
          string res = "<div class=\"inline box\"><a href=\"$(urlWithParam(\"tag\", \"$tag\"))\">$tag</a></div>";
          /*string minus;
          using scoped outputfn = \(string s) minus ~= s; {
            b "-";
            div #.class "hidden box inline" \{
              form #.id "form$formid" #.method "post" #.action "#" \{
                input #.type "hidden" #.name "threadId" #.value "$thread_id");
                input #.type "hidden" #.name "tagname" #.value "$tag";
                input #.type "hidden" #.name "action" #.value "rm_tag";
                a #.href "javascript:submitForm('form$formid');" "Remove Tag";
              }
            }
          }
          res = "$res<div class=\"minustag inline box\" style=\"vertical-align: super; \">$minus</div>";*/
          formid ++;
          return res;
        }
        string tagstr = [for str <- tags extra &genTag: extra(str)].join ", ";

        string firstDateText = "$firstDate";
        string lastDateText = "$lastDate";
        if (thread_id >= 0) {
          firstDateText = "<a href=\"http://www.mspaforums.com/showthread.php?$thread_id\">$firstDate</a>";
          lastDateText = "<a href=\"http://www.mspaforums.com/showthread.php?$thread_id&amp;p=$lastDateId&amp;viewfull=1#post$lastDateId\">$lastDate</a>";
        }

        eval string evenodd <- evenodd_iter;
        // writeln "TEST <<$evenodd>>";
        tr .class evenodd \{
          td .class "first" a .href urlWithParam("thread", "$thread_id") threadname;
          td .class "mid"   a .href urlWithParam("author", threadStarter) threadStarter;
          td .class "mid"   "$posts";
          td .class "mid"   firstDateText;
          td .class "mid"   lastDateText;
          td .class "last"  \{
            text tagstr;
            div .class "plustag inline box" \{
              text "+";
              div #.class "hidden box inline " #.style "position: absolute; " \{
                form #.id "form$formid" #.method "post" #.action "#" \{
                  input #.type "text" #.name "tagname";
                  input #.type "hidden" #.name "threadId" #.value "$thread_id";
                  input #.type "hidden" #.name "action" #.value "add_tag";
                  a #.href "javascript:submitForm('form$formid');" "Add Tag";
                }
              }
            }
          }
          formid ++;
        }
      }
      db.finStatementList();
    }
    return;
  }

  if (site == "overview") {
    writeHTMLHeader(doctype => false);
    std.cgi.head \{
      title "Overview";
      text sharedCSS;
      text sharedJS;
    }
    writeln "<body>";
    onSuccess {
      writeFooter();
      writeln "</body></html>";
    }
    writeSiteHeader(handleSpoilers => true, linkToOverview => true, linkToList => false, linkToFullView => true, floatIt => false);

    {
      writeln "<table class=\"boxed\">";
      tr \{
        th.class "first" "Thread";
        th.class "mid"   "Name";
        th.class "mid"   "Date";
        th.class "last"  "Post ID";
      }

      auto evenodd_iter = loop ["even", "odd"];

      int iframe_id;
      void writeRowFor(string page_url, int next_msg_id, msg_id, prev_msg_id, string name, string date, bool showSpoilers) {
        eval string evenodd <- evenodd_iter;
        string threadname = getThreadName page_url;
        string spoilerpar;
        if (showSpoilers) spoilerpar = "&amp;spoilers";
        string next_post_link = "?site=rss&amp;id=$next_msg_id$spoilerpar";
        string post_link = "?site=rss&amp;id=$msg_id$spoilerpar";
        string prev_post_link = "?site=rss&amp;id=$prev_msg_id$spoilerpar";
        tr.class evenodd \{
          td.class "first" threadname;
          td.class "mid"   a.href urlWithParam("author", name) name;
          td.class "mid"   date;
          td.class "last" \{
            a.href "javascript: loadFrame('mewframe$iframe_id', 'mewdiv$iframe_id', '$post_link'); " "$msg_id";
            div #.class "mewdiv" #.id "mewdiv$iframe_id" \{
              table.class "mewtable boxed" \{
                tr.style "height: 20px; " \{
                  td.onclick "javascript:loadFrame('mewframe$(iframe_id-1)', 'mewdiv$(iframe_id-1)', '$prev_post_link');" "&lt; Back";
                  td.onclick "javascript:loadFrame('mewframe$(iframe_id+1)', 'mewdiv$(iframe_id+1)', '$next_post_link');" "Forth &gt;";
                }
                tr td.colspan 2 $ iframe #.class "mewframe" #.id "mewframe$iframe_id" #.src "" #.scrolling "auto" #.frameborder 0 "mew!";
              }
            }
          }
        }
        writeln("");
        iframe_id ++;
      }
      {
        auto first = cat([true], loop [false]);
        string page_url;
        int msg_id = -1, prev_msg_id = -1;
        string name, date;
        bool aborted;
        alias limit = 64;
        string sqltext = "
          select page_urls.page_url, posts.msgid, name, date from posts
          join thread_ids on posts.msgid = thread_ids.msgid
          join page_urls on posts.msgid = page_urls.msgid
          join (
            select thread_ids.thread_id, thread_ids.msgid from thread_ids
            left outer join tags on thread_ids.thread_id = tags.thread_id
            where 1 $tagmask-sql $threadmask-sql
            group by thread_ids.thread_id
          ) B on thread_ids.thread_id = B.thread_id
          join date_codes on posts.msgid = date_codes.msgid
          $textmask-sql $authormask-sql
          order by date_codes.datecode asc";
        for (int i, (string next_page_url, int next_msg_id, string next_name, string next_date)) <- zip(0..limit, db.exec!FOURSTRING!(string, int, string, string)(sqltext, tagmask, threadmask, authormask))
        {
          eval bool b <- first;
          if !b {
            writeRowFor (page_url, next_msg_id, msg_id, prev_msg_id, name, date, showSpoilers);
            prev_msg_id = msg_id;
          }
          (page_url, msg_id, name, date) = (next_page_url.dup, next_msg_id, next_name.dup, next_date.dup);
          if (i == limit - 1) aborted = true;
        }
        if (aborted) {
          writeln "</table>";
          writeln "<br />";
          writeln "Rest omitted due to sanity checking. ";
        } else {
          writeRowFor (page_url, -1, msg_id, prev_msg_id, name, date, showSpoilers);
          writeln "</table>";
        }
        // writeln ">> $sqltext";
      }
    }
    return;
  }

  alias base_url = "http://demented.no-ip.org/~feep/threadfeed.cgi";

  if (site == "rss") {
    processCookie();
    if auto id = getParam "id" {
      bool spoilers = eval getParam ("spoilers");
      writeHTMLHeader();
      writeln "<head><title>Post view</title>";
      writeln sharedCSS;
      writeln sharedJS;
      writeln "</head><body>";
      onSuccess {
        writeFooter();
        writeln "</body></html>";
      }
      auto msgid = id.atoi;
      eval int thread_id <- db.exec("select thread_id from thread_ids where msgid = ?", msgid);
      string backlink = "|&nbsp;<a href=\"http://www.mspaforums.com/showthread.php?$thread_id&p=$msgid&viewfull=1#post$msgid\">MSPA forum link</a>";
      writeSiteHeader(handleSpoilers => true, linkToOverview => true, linkToList => false, linkToFullView => false,
                      showRSS => false, floatIt => false, showFilters => false, additionalText => backlink);
      for ubyte[] data <- db.exec("select content from content where msgid = ?", msgid)
      {
        string idText = urlWithParam("id", "");
        string content = reformatPost (string: inflate data, spoilers, idText, linkToAnchors => false, noNyud => noNyud);
        writeln "$content";
      }
      return;
    }
    string sqlcode = "
      select posts.msgid, postnr, A.thread_id, name, date, content from
        (
          select thread_ids.thread_id, msgid from thread_ids
          left outer join tags on thread_ids.thread_id = tags.thread_id
          where 1 $tagmask-sql $threadmask-sql
          group by thread_ids.thread_id
        ) A
        join thread_ids on A.thread_id = thread_ids.thread_id
        join posts on posts.msgid = thread_ids.msgid
        join postnums C on C.msgid = thread_ids.msgid
        join content D on D.msgid = thread_ids.msgid
        join date_codes on date_codes.msgid = thread_ids.msgid
        $textmask-sql $authormask-sql $idmask-sql
        order by date_codes.datecode asc";
    alias Tup = (int, int, int, string, string, string);
    auto qit = db.exec!FIVESTRING!Tup(sqlcode, tagmask, threadmask, authormask, idmask);

    int lastMsgId;
    for (int msgId, int postId, int threadId, string name, string date, string content) <- qit {
      lastMsgId = msgId;
    }
    writeln "Content-type: application/rss+xml";
    if (lastMsgId != 0)
      writeln "Set-Cookie: idmask=from_$lastMsgId";
    writeln "";
    writeln "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>";
    writeln "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">";
    onSuccess writeln "</rss>";
    writeln "<channel>";
    onSuccess writeln "</channel>";
    writeln "<title>Thread Feed</title>";
    writeln "<link>$base_url</link>";

    writeln "<description>RSS feed for MSPA and tgchan forums</description>";
    // writeln "<atom:link href=\"$base_url?$query_string\" rel=\"self\" type=\"application/rss+xml\" />";

    qit = db.exec!FIVESTRING!Tup(sqlcode, tagmask, threadmask, authormask, idmask);
    for (int msgId, int postId, int threadId, string name, string date, string content) <- qit
    {
      // parse the date
      date.cleanupDate();
      writeln "<item>";
      onSuccess writeln "</item>";
      writeln "<title>$name</title>";
      writeln "<pubDate>$date</pubDate>";
      writeln "<guid isPermaLink=\"false\">mspa_forum_post_id_on_feeps_rss_$msgId</guid>";
      writeln "<link>$base_url$(urlWithParam(\"id\", \"\\$msgId\"))</link>"; // .replace("&amp;", "&"); /* not necessary for rss */
      // writeln "<link>$base_url?id=$msgId</link>";
    }
    return;
  }
  if (site == "full-html") {
    string sqlcode = "
      select content, name, date, posts.msgid, thread_ids.thread_id from
      (
        select thread_ids.thread_id, msgid from thread_ids
        left outer join tags on thread_ids.thread_id = tags.thread_id
        where 1 $tagmask-sql $threadmask-sql
        group by thread_ids.thread_id
      ) A
      join thread_ids on A.thread_id = thread_ids.thread_id
      join posts on thread_ids.msgid = posts.msgid
      join content B on posts.msgid = B.msgid
      join date_codes on posts.msgid = date_codes.msgid
      $textmask-sql $authormask-sql $idmask-sql
      order by date_codes.datecode asc";
    auto qit = db.exec!FIVESTRING!(ubyte[], string, string, int, int)(sqlcode, tagmask, threadmask, authormask, idmask);
    if (getParam("funtimemode") == "yes") {
      writeln "Content-type: text/html";
      writeln "";
      for (ubyte[] data, string name, string date, int postId, int threadId) <- qit {
        auto text = string: inflate data #.dup;
        // writeln "[$name]";
        /*char[auto~] newtext;
        while (text.length) {
          void flush(int to) { newtext ~= text[0 .. to]; }
          auto bpos = text.find("<b>");
          auto bcpos = text.find("</b>");
          if (bpos != -1 && bpos < bcpos) {
            text = text[bpos + 3 .. $];
          }
          else if (bcpos != -1 && bcpos < bpos) {
            flush bcpos;
            text = text[bcpos + 4 .. $];
          } else text = new char[] 0;
        }
        text = newtext[];*/
        writeln string:text;
      }
      return;
    }
    writeHTMLHeader();
    writeln "<head><title>Full HTML View</title>";
    writeln sharedCSS;
    writeln sharedJS;
    writeln "</head><body>";
    // writeln ">> $sqlcode";
    onSuccess {
      writeFooter();
      writeln "</body></html>";
    }
    writeSiteHeader(handleSpoilers => true, linkToOverview => true, linkToList => true, linkToFullView => false, floatIt => false);
    if (!authormask && !tagmask && !threadmask) {
      writeln "Uh-oh! You loaded the Full-HTML view but no author, thread or tag mask is set! <br />
      This means that I should by all rights dump my entire post database at your feet now. <br />
      Since I'm a nice person and don't want to crash your system, I'm not going to do that. <br />
      You should go back. There is nothing for you here. ";
      return;
    }
    void loopBody(ubyte[] data, string name, date, int postId, threadId) {
      string idText = urlWithParam("id", "");
      string content = reformatPost (string: inflate data #.dup, showSpoilers, idText, linkToAnchors => true, noNyud => noNyud);
      a.name "post$postId" "";
      div.class "box_outer" \{
        string backlink = "http://www.mspaforums.com/showthread.php?$threadId&amp;p=$postId&amp;viewfull=1#post$postId";
        div.class "box_inner" \{
          b "Name: ";
          text name;
          text "&nbsp;&nbsp;";
          b "Date: ";
          text date;
          text "&nbsp;&nbsp;";
          b \{ if (postId >= 0) a.href backlink "MSPA link"; } // otherwise non-mspa
          a #.style "text-decoration: none; color: #cdc; " #.href urlWithParam("idmask", "from_$postId") "▼";
        }
        text content;
      }
    }
    if (count == -1) {
      for (ubyte[] data, string name, string date, int postId, int threadId) <- qit {
        loopBody(data, name, date, postId, threadId);
      }
    } else {
      int lastPostId = 0;
      for (int k, (ubyte[] data, string name, string date, int postId, int threadId)) <- zip(0..count + 1, qit) {
        if (k != count) loopBody(data, name, date, postId, threadId);
        else lastPostId = postId;
      }
      if (lastPostId != 0) {
        int left = 1;
        int[auto~] restIds;
        for (ubyte[] data, string name, string date, int postId, int threadId) <- qit { restIds ~= postId; }
        left += restIds.length;
        string extralink;
        a .href urlWithParam("idmask", "from_$lastPostId") "Next";
        if (restIds.length) {
          int lastpage;
          if (count < restIds.length) lastpage = restIds[$-count+1];
          else lastpage = restIds[0];
          text "($left posts left)";
          a.href urlWithParam("idmask", "from_$lastpage") "Last Page";
        }
        br;
      }
    }
    return;
  }
}