/**
 * Copyright (c) 2013, Timothy Stack
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @file sqlite-extension-func.h
 */

#ifndef _sqlite_extension_func_h
#define _sqlite_extension_func_h

#include <stdint.h>
#include <sqlite3.h>

#include <string>
#include <map>

#include "help_text_formatter.hh"

struct FuncDef {
    const char *zName;
    signed char nArg;
    int eTextRep;          /* 1: UTF-16.  0: UTF-8 */
    uint8_t needCollSeq;
    void (*xFunc)(sqlite3_context*,int,sqlite3_value **);
    help_text fd_help;

    FuncDef &with_flags(int flags) {
        this->eTextRep = flags;
        return *this;
    };
};

struct FuncDefAgg {
    const char *zName;
    signed char nArg;
    uint8_t needCollSeq;
    void (*xStep)(sqlite3_context*,int,sqlite3_value**);
    void (*xFinalize)(sqlite3_context*);
    help_text fda_help;
};

typedef int (*sqlite_registration_func_t)(struct FuncDef **basic_funcs,
                                          struct FuncDefAgg **agg_funcs);

int common_extension_functions(struct FuncDef **basic_funcs,
                               struct FuncDefAgg **agg_funcs);

int state_extension_functions(struct FuncDef **basic_funcs,
                              struct FuncDefAgg **agg_funcs);

int string_extension_functions(struct FuncDef **basic_funcs,
                               struct FuncDefAgg **agg_funcs);

int network_extension_functions(struct FuncDef **basic_funcs,
                                struct FuncDefAgg **agg_funcs);

int fs_extension_functions(struct FuncDef **basic_funcs,
                           struct FuncDefAgg **agg_funcs);

int json_extension_functions(struct FuncDef **basic_funcs,
                             struct FuncDefAgg **agg_funcs);

int time_extension_functions(struct FuncDef **basic_funcs,
                             struct FuncDefAgg **agg_funcs);

extern sqlite_registration_func_t sqlite_registration_funcs[];

int register_sqlite_funcs(sqlite3 *db, sqlite_registration_func_t *reg_funcs);

#endif
