@   comment TEXT
@ );
@ CREATE TABLE ticketchng(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER REFERENCES ticket,
@   tkt_rid INTEGER REFERENCES blob,
@   tkt_mtime DATE,
@   tkt_user TEXT,
@   -- Add as many fields as required below this line
@   login TEXT,
@   username TEXT,
@   mimetype TEXT,
@   icomment TEXT
@ );
@ CREATE INDEX ticketchng_idx1 ON ticketchng(tkt_id, tkt_mtime);

#include "config.h"
#include "tkt.h"
#include <assert.h>

/*
** The list of database user-defined fields in the TICKET table.
** The real table also contains some addition fields for internal
** used.  The internal-use fields begin with "tkt_".
** use.  The internal-use fields begin with "tkt_".
*/
static int nField = 0;
static struct tktFieldInfo {
  char *zName;             /* Name of the database field */
  char *zValue;            /* Value to store */
  char *zAppend;           /* Value to append */
  unsigned mUsed;          /* 01: TICKET  02: TICKETCHNG */
} *aField;
#define USEDBY_TICKET      01
#define USEDBY_TICKETCHNG  02
#define USEDBY_BOTH        03
static u8 haveTicket = 0;        /* True if the TICKET table exists */
static u8 haveTicketCTime = 0;   /* True if TICKET.TKT_CTIME exists */
static u8 haveTicketChng = 0;    /* True if the TICKETCHNG table exists */
static u8 haveTicketChngRid = 0; /* True if TICKETCHNG.TKT_RID exists */
static u8 haveTicketChngUser = 0;/* True if TICKETCHNG.TKT_USER exists */

/*
** Compare two entries in aField[] for sorting purposes
*/
static int nameCmpr(const void *a, const void *b){
  return fossil_strcmp(((const struct tktFieldInfo*)a)->zName,
                       ((const struct tktFieldInfo*)b)->zName);

  }
  db_finalize(&q);
  db_prepare(&q, "PRAGMA table_info(ticketchng)");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFieldName = db_column_text(&q, 1);
    haveTicketChng = 1;
    if( memcmp(zFieldName,"tkt_",4)==0 ){
      if( strcmp(zFieldName,"tkt_rid")==0 ) haveTicketChngRid = 1;
      if( strcmp(zFieldName+4,"rid")==0 ){
        haveTicketChngRid = 1;  /* tkt_rid */
      }else if( strcmp(zFieldName+4,"user")==0 ){
        haveTicketChngUser = 1; /* tkt_user */
      }
      continue;
    }
    if( (i = fieldId(zFieldName))>=0 ){
      aField[i].mUsed |= USEDBY_TICKETCHNG;
      continue;
    }
    if( nField%10==0 ){

** then it will be the ROWID of an existing TICKET entry.
**
** Parameter rid is the recordID for the ticket artifact in the BLOB table.
**
** Return the new rowid of the TICKET table entry.
*/
static int ticket_insert(const Manifest *p, int rid, int tktid){
  Blob sql1, sql2, sql3;
  Blob sql1; /* update or replace TICKET ... */
  Blob sql2; /* list of TICKETCHNG's fields that are in the manifest */
  Blob sql3; /* list of values which correspond to the previous list */
  Stmt q;
  int i, j;
  char *aUsed;
  const char *zMimetype = 0;

  if( tktid==0 ){
    db_multi_exec("INSERT INTO ticket(tkt_uuid, tkt_mtime) "
                  "VALUES(%Q, 0)", p->zTicketUuid);
    tktid = db_last_insert_rowid();
  }
  blob_zero(&sql1);
  blob_zero(&sql2);
  blob_zero(&sql3);
  blob_append_sql(&sql1, "UPDATE OR REPLACE ticket SET tkt_mtime=:mtime");
  if( haveTicketCTime ){
    blob_append_sql(&sql1, ", tkt_ctime=coalesce(tkt_ctime,:mtime)");
  }
  aUsed = fossil_malloc( nField );
  memset(aUsed, 0, nField);
  for(i=0; i<p->nField; i++){
    const char *zName = p->aField[i].zName;
    const char *zBaseName = zName[0]=='+' ? zName+1 : zName;
    const char * const zName = p->aField[i].zName;
    const char * const zBaseName = zName[0]=='+' ? zName+1 : zName;
    j = fieldId(zBaseName);
    if( j<0 ) continue;
    aUsed[j] = 1;
    if( aField[j].mUsed & USEDBY_TICKET ){
      const char *zUsedByName = zName;
      if( zUsedByName[0]=='+' ){
      if( zName[0]=='+' ){
        zUsedByName++;
        blob_append_sql(&sql1,", \"%w\"=coalesce(\"%w\",'') || %Q",
                        zUsedByName, zUsedByName, p->aField[i].zValue);
                        zBaseName, zBaseName, p->aField[i].zValue);
      }else{
        blob_append_sql(&sql1,", \"%w\"=%Q", zUsedByName, p->aField[i].zValue);
        blob_append_sql(&sql1,", \"%w\"=%Q", zBaseName, p->aField[i].zValue);
      }
    }
    if( aField[j].mUsed & USEDBY_TICKETCHNG ){
      const char *zUsedByName = zName;
      if( zUsedByName[0]=='+' ){
        zUsedByName++;
      }
      blob_append_sql(&sql2, ",\"%w\"", zUsedByName);
      blob_append_sql(&sql2, ",\"%w\"", zBaseName);
      blob_append_sql(&sql3, ",%Q", p->aField[i].zValue);
    }
    if( strcmp(zBaseName,"mimetype")==0 ){
      zMimetype = p->aField[i].zValue;
    }
  }
  if( rid>0 ){

  }
  blob_append_sql(&sql1, " WHERE tkt_id=%d", tktid);
  db_prepare(&q, "%s", blob_sql_text(&sql1));
  db_bind_double(&q, ":mtime", p->rDate);
  db_step(&q);
  db_finalize(&q);
  blob_reset(&sql1);
  if( blob_size(&sql2)>0 || haveTicketChngRid ){
  if( blob_size(&sql2)>0 || haveTicketChngRid || haveTicketChngUser ){
    int fromTkt = 0;
    if( haveTicketChngRid ){
      blob_append(&sql2, ",tkt_rid", -1);
      blob_append_literal(&sql2, ",tkt_rid");
      blob_append_sql(&sql3, ",%d", rid);
    }
    if( haveTicketChngUser && p->zUser ){
      blob_append_literal(&sql2, ",tkt_user");
      blob_append_sql(&sql3, ",%Q", p->zUser);
    }
    for(i=0; i<nField; i++){
      if( aUsed[i]==0
       && (aField[i].mUsed & USEDBY_BOTH)==USEDBY_BOTH
      ){
        const char *z = aField[i].zName;
        if( z[0]=='+' ) z++;
        fromTkt = 1;

@   comment TEXT
@ );
@ CREATE TABLE ticketchng(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER REFERENCES ticket,
@   tkt_rid INTEGER REFERENCES blob,
@   tkt_mtime DATE,
@   tkt_user TEXT,
@   -- Add as many fields as required below this line
@   login TEXT,
@   username TEXT,
@   mimetype TEXT,
@   icomment TEXT
@ );
@ CREATE INDEX ticketchng_idx1 ON ticketchng(tkt_id, tkt_mtime);