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/* -*- c++ -*- */
/***************************************************************************
* database_gourmet.cc
*
* Sun Apr 24 18:27:56 CEST 2022
* Copyright 2022 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Qookie.
*
* Qookie is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Qookie is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Qookie; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "database_gourmet.h"
#include <sqlite3.h>
#include <iostream>
#include <cassert>
// https://www.tutorialspoint.com/sqlite/sqlite_c_cpp.htm
DatabaseGourmet::DatabaseGourmet(const std::string& file)
{
auto rc = sqlite3_open(file.data(), &db); // https://sqlite.org/c3ref/open.html
if(rc)
{
std::cerr << "Can't open database: " << sqlite3_errmsg(db) << '\n';
return;
}
else
{
std::cout << "Opened database successfully\n";
}
}
DatabaseGourmet::~DatabaseGourmet()
{
sqlite3_close(db);
}
namespace
{
std::string getString(sqlite3_stmt *statement, int index)
{
int size = sqlite3_column_bytes(statement, index);
std::string str;
str.append((const char*)sqlite3_column_blob(statement, index), size);
return str;
}
} // ::
std::deque<RecipeItem> DatabaseGourmet::getRecipes()
{
std::deque<RecipeItem> items;
std::string sql = "select id, title, image from recipe";
sqlite3_stmt *statement;
if(sqlite3_prepare_v2(db, sql.data(), sql.length(), &statement, 0) != SQLITE_OK)
{
std::cerr << "sqlite3_prepare_v2 failed: " << sqlite3_errmsg(db) << '\n';
return {};
}
int result = 0;
while(true)
{
RecipeItem item;
result = sqlite3_step(statement);
if(result == SQLITE_ROW)
{
item.db = DatabaseSource::Gourmet;
item.id = sqlite3_column_int(statement, 0);
item.title = getString(statement, 1);
item.image = getString(statement, 2);
}
else
{
break;
}
items.push_back(item);
}
return items;
}
Recipe DatabaseGourmet::getRecipe(int id)
{
bool found{false};
Recipe recipe;
{
std::string sql =
"select id, title, description, image, instructions, source, link, cuisine, cooktime, preptime, yields, yield_unit, modifications from recipe where id=" +
std::to_string(id);
sqlite3_stmt *statement;
if(sqlite3_prepare_v2(db, sql.data(), sql.length(), &statement, 0) != SQLITE_OK)
{
std::cerr << "sqlite3_prepare_v2 failed: " << sqlite3_errmsg(db) << '\n';
return {};
}
int result = 0;
while(true)
{
result = sqlite3_step(statement);
if(result == SQLITE_ROW)
{
recipe.db = DatabaseSource::Gourmet;
recipe.id = sqlite3_column_int(statement, 0);
recipe.title = getString(statement, 1);
recipe.description = getString(statement, 2);
recipe.image = getString(statement, 3);
recipe.instructions = getString(statement, 4);
recipe.source = getString(statement, 5);
if(!recipe.source.empty())
{
recipe.source += " ";
}
recipe.source += getString(statement, 6);
recipe.cuisine = getString(statement, 7);
recipe.cooktime = sqlite3_column_int(statement, 8);
recipe.preptime = sqlite3_column_int(statement, 9);
recipe.yields = sqlite3_column_double(statement, 10);
recipe.yield_unit = getString(statement, 11);
recipe.tags.push_back(getString(statement, 12));
}
else
{
break;
}
found = true;
}
}
if(!found)
{
std::cerr << "id " << id << " not found\n";
return {};
}
{
std::string sql =
"select amount, unit, item, inggroup from ingredients where recipe_id=" +
std::to_string(id) + " order by position asc";
sqlite3_stmt *statement;
if(sqlite3_prepare_v2(db, sql.data(), sql.length(), &statement, 0) != SQLITE_OK)
{
std::cerr << "sqlite3_prepare_v2 failed: " << sqlite3_errmsg(db) << '\n';
return {};
}
recipe.ingredient_groups.push_back({}); // first group is the empty-titled one.
int result = 0;
while(true)
{
Ingredient ingredient;
result = sqlite3_step(statement);
if(result == SQLITE_ROW)
{
ingredient.amount = sqlite3_column_double(statement, 0);
ingredient.unit = getString(statement, 1);
ingredient.item = getString(statement, 2);
auto group_title = getString(statement, 3);
auto* group = &recipe.ingredient_groups.back();
assert(recipe.ingredient_groups.size() > 0);
if(group->title != group_title)
{
recipe.ingredient_groups.push_back({group_title, {}});
group = &recipe.ingredient_groups.back();
}
group->ingredients.push_back(ingredient);
}
else
{
break;
}
}
}
return recipe;
}
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