#define TIMELINE_BRIEF    0x0004  /* Combine adjacent elements of same object */
#define TIMELINE_GRAPH    0x0008  /* Compute a graph */
#define TIMELINE_DISJOINT 0x0010  /* Elements are not contiguous */
#define TIMELINE_FCHANGES 0x0020  /* Detail file changes */
#define TIMELINE_BRCOLOR  0x0040  /* Background color by branch name */
#define TIMELINE_UCOLOR   0x0080  /* Background color by user */
#define TIMELINE_FRENAMES 0x0100  /* Detail only file name changes */
#define TIMELINE_UNHIDE   0x0200  /* Unhide */
#endif

/*
** Hash a string and use the hash to determine a background color.
*/
char *hash_color(const char *z){
  int i;                       /* Loop counter */

}

/*
** Return a pointer to a constant string that forms the basis
** for a timeline query for the WWW interface.
*/
const char *timeline_query_for_www(void){

  static const char zBaseSql[] =
    @ SELECT
    @   blob.rid AS blobRid,
    @   uuid AS uuid,
    @   datetime(event.mtime,'localtime') AS timestamp,
    @   coalesce(ecomment, comment) AS comment,
    @   coalesce(euser, user) AS user,
    @   blob.rid IN leaf AS leaf,
    @   bgcolor AS bgColor,
    @   event.type AS eventType,
    @   (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) AS tags,
    @   tagid AS tagid,
    @   brief AS brief,
    @   event.mtime AS mtime
    @  FROM event CROSS JOIN blob
    @ WHERE blob.rid=event.objid


  ;



  return zBaseSql;
}

/*
** Generate a submenu element with a single parameter change.
*/
static void timeline_submenu(
  HQuery *pUrl,            /* Base URL */

    tmFlags &= ~TIMELINE_GRAPH;
    url_add_parameter(&url, "ng", 0);
  }
  if( P("brbg")!=0 ){
    tmFlags |= TIMELINE_BRCOLOR;
    url_add_parameter(&url, "brbg", 0);
  }
  if( P("unhide")!=0 ){
    tmFlags |= TIMELINE_UNHIDE;
    url_add_parameter(&url, "unhide", 0);
  }
  if( P("ubg")!=0 ){
    tmFlags |= TIMELINE_UCOLOR;
    url_add_parameter(&url, "ubg", 0);
  }
  if( zUses!=0 ){
    int ufid = db_int(0, "SELECT rid FROM blob WHERE uuid GLOB '%q*'", zUses);
    if( ufid ){

  }

  style_header("Timeline");
  login_anonymous_available();
  timeline_temp_table();
  blob_zero(&sql);
  blob_zero(&desc);
  blob_appendf(&sql, "INSERT OR IGNORE INTO timeline "
		       "%s AND NOT EXISTS(SELECT 1 FROM tagxref"
               "     WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
               timeline_query_for_www());
  if( P("fc")!=0 || P("v")!=0 || P("detail")!=0 ){
    tmFlags |= TIMELINE_FCHANGES;
    url_add_parameter(&url, "v", 0);
  }
  if( (tmFlags & TIMELINE_UNHIDE)==0 ){
    blob_appendf(&sql, " AND NOT EXISTS(SELECT 1 FROM tagxref"
                 "     WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
                 TAG_HIDDEN);
  }
  if( !useDividers ) url_add_parameter(&url, "nd", 0);
  if( ((from_rid && to_rid) || (me_rid && you_rid)) && g.perm.Read ){
    /* If from= and to= are present, display all nodes on a path connecting
    ** the two */
    PathNode *p = 0;
    const char *zFrom = 0;

      }
      if( zType[0]=='a' || zType[0]=='c' ){
        if( tmFlags & TIMELINE_FCHANGES ){
          timeline_submenu(&url, "Hide Files", "v", 0, 0);
        }else{
          timeline_submenu(&url, "Show Files", "v", "", 0);
        }
        if( (tmFlags & TIMELINE_UNHIDE)==0 ){
          timeline_submenu(&url, "Unhide", "unhide", "", 0);
        }
      }
    }
  }
  if( P("showsql") ){
    @ <blockquote>%h(blob_str(&sql))</blockquote>
  }
  blob_zero(&sql);