Fossil

** If enabled on a client, new delta manifests are prohibited on
** commits.  If enabled on a server, whenever a client attempts
** to obtain a check-in lock during auto-sync, the server will 
** send the "pragma avoid-delta-manifests" statement in its reply,
** which will cause the client to avoid generating a delta
** manifest.
*/
/*
** SETTING: forum-close-policy    boolean default=off
** If true, forum moderators may close forum posts, else only
** administrators may do so. Note that this only affects the forum web
** UI, not post-closing tags which arrive via the command-line or from
** synchronization with a remote.
*/
/*
** SETTING: gdiff-command    width=40 default=gdiff sensitive
** The value is an external command to run when performing a graphical
** diff. If undefined, text diff will be used.
*/
/*
** SETTING: gmerge-command   width=40 sensitive

  ** size of these artifacts, however, that would save little space,
  ** if any. */
  db_end_transaction(0);
  return 1;
}

/*
** Returns true if the forum-close-policy setting is true, else false,
** caching the result for subsequent calls.
*/
static int forumpost_close_policy(void){
  static int closePolicy = -99;

  if( closePolicy==-99 ){
    closePolicy = db_get_boolean("forum-close-policy",0)>0;
  }
  return closePolicy;
}

/*
** Returns 1 if the current user is an admin, -1 if the current user
** is a forum moderator and the forum-close-policy setting is true,
** else returns 0. The value is cached for subsequent calls.
*/
static int forumpost_may_close(void){
  static int permClose = -99;
  if( permClose!=-99 ){
    return permClose;
  }else if( g.perm.Admin ){
    return permClose = 1;
  }else if( g.perm.ModForum ){
    return permClose = forumpost_close_policy()>0 ? -1 : 0;
  }else{
    return permClose = 0;
  }  
}

/*
** If iClosed is true and the current user forumpost-close privileges,
** this renders either a checkbox to unlock forum post fpid (if
** iClosed>0) or a SPAN.warning element that the given post inherits
** the CLOSED status from a parent post (if iClosed<0). If neither of
** the initial conditions is true, this is a no-op.
*/
static void forumpost_emit_closed_state(int fpid, int iClosed){
  const char *zCommon;

  int iHead = forumpost_head_rid(fpid);
  const int permClose = forumpost_may_close();

  zCommon = forumpost_close_policy()==0
    ? "Admins may close or re-open posts, or respond to closed posts."
    : "Admins or moderators "
      "may close or re-open posts, or respond to closed posts.";
  /*@ forumpost_emit_closed_state(%d(fpid), %d(iClosed))<br/>*/
  if( iHead != fpid ){
    iClosed = forum_rid_is_closed(iHead, 1);
    /*@ forumpost_emit_closed_state() %d(iHead), %d(iClosed)*/
  }
  if( iClosed<0 ){
    @ <div class="warning forumpost-closure-warning">\
    @ This post is CLOSED via a parent post. %s(zCommon)\
    @ </div>
    return;
  }
  else if( iClosed==0 ){
    if( permClose==0 ) return;
    @ <div class="warning forumpost-closure-warning">
    @ <form method="post" action="%R/forumpost_close">
    @ <input type="hidden" name="fpid" value="%z(rid_to_uuid(iHead))" />
    @ <input type="submit" value="CLOSE this post and its responses" />
    @ <span>%s(zCommon)</span>
    @ <span>This does NOT save any pending changes in
    @ the editor!</span>
    @ </form></div>
    return;
  }
  assert( iClosed>0 );
  /* Only show the "unlock" option on a post which is actually
  ** closed, not on a post which inherits that state. */
  @ <div class="warning forumpost-closure-warning">\
  @ This post is CLOSED. %s(zCommon)
  if( permClose ){
    @ <form method="post" action="%R/forumpost_reopen">
    @ <input type="hidden" name="fpid" value="%z(rid_to_uuid(iHead))" />
    @ <input type="submit" value="Re-open this post and its responses" />
    @ <span>This does NOT save any pending changes in
    @ the editor!</span>
    @ </form>
  }
  @ </div>
}

/*
** Emits a warning that the current forum post is CLOSED and can only

    if( g.perm.WrForum && !p->pEditTail ){
      @ <div class="forumpost-single-controls">\
      @ <form action="%R/forumedit" method="POST">
      @ <input type="hidden" name="fpid" value="%s(p->zUuid)">
      if( !bPrivate ){
        /* Reply and Edit are only available if the post has been
        ** approved.  Closed threads can only be edited or replied to
        ** if forumpost_may_close() is true but a user may delete
        ** their own posts even if they are closed. */
        if( forumpost_may_close() || !iClosed ){
          @ <input type="submit" name="reply" value="Reply">
          if( g.perm.Admin || (bSameUser && !iClosed) ){
            @ <input type="submit" name="edit" value="Edit">
          }
          if( g.perm.Admin || bSameUser ){
            @ <input type="submit" name="nullout" value="Delete">
          }

          @ <input type="hidden" name="trustuser" value="%h(pManifest->zUser)">
        }
      }else if( bSameUser ){
        /* Allow users to delete (reject) their own pending posts. */
        @ <input type="submit" name="reject" value="Delete">
      }
      @ </form>
      if( bSelect && forumpost_may_close() && iClosed>=0 ){
        int iHead = forumpost_head_rid(p->fpid);
        @ <form method="post" \
        @  action='%R/forumpost_%s(iClosed > 0 ? "reopen" : "close")'>
        @ <input type="hidden" name="fpid" value="%z(rid_to_uuid(iHead))" />
        @ <input type="submit" value='%s(iClosed ? "Re-open" : "Close")' />
        @ </form>
      }

void forum_page_close(void){
  const char *zFpid = PD("fpid","");
  const char *zReason = 0;
  int fClose;
  int fpid;

  login_check_credentials();
  if( forumpost_may_close()==0 ){
    login_needed(g.anon.Admin);
    return;
  }
  fpid = symbolic_name_to_rid(zFpid, "f");
  if( fpid<=0 ){
    webpage_error("Missing or invalid fpid query parameter");
  }