In process of creating method to store recipe.

RecipeDB.pro

@@ -39,7 +39,8 @@ HEADERS  += model/recipe/instruction.h \
     SQLite/sqlite3ext.h \
     model/database/resulttable.h \
     model/database/recipedatabase.h \
-    utils/fileutils.h
+    utils/fileutils.h \
+    utils/stringutils.h
 
 LIBS += -ldl \
 

main.cpp

@@ -12,18 +12,23 @@ int main(int argc, char *argv[])
     w.show();
 
 	//TESTING CODE
-//	Database db("test.db");
-//	printf("Table exists: %d\n", db.tableExists("ingredients"));
-//	db.executeSQL("SELECT * FROM ingredients;").printData();
-//	db.executeSQL("PRAGMA table_info('ingredients');").printData();
-//	db.executeSQL("SELECT name FROM ingredients WHERE foodGroup == 'fruit';").printData();
 
 	RecipeDatabase recipeDB("recipes");
 	recipeDB.storeIngredient(Ingredient("Apple", "Fruit"));
 	recipeDB.storeIngredient(Ingredient("Corn", "Vegetable"));
+	recipeDB.storeIngredient(Ingredient("Lettuce", "Vegetable"));
+	recipeDB.storeIngredient(Ingredient("Carrot", "Vegetable"));
+
 	recipeDB.executeSQL("SELECT * FROM ingredient;").printData();
 
-	FileUtils::saveInstruction(1, Instruction("This is some plain text with no HTML markup."));
+	//TESTING CODE
+	vector<RecipeIngredient> ri;
+	ri.push_back(RecipeIngredient("flour", "grains", 3.0f, UnitOfMeasure("cup", "cups", "c")));
+	ri.push_back(RecipeIngredient("Baking Powder", "Additives", 1.0f, UnitOfMeasure("Teaspoon", "Teaspoons", "Tsp")));
+
+	Recipe rec("Example", ri, Instruction("<b>BOLD</b><i>iTaLiCs</i>"), QImage(), vector<RecipeTag>(), QDate::currentDate(), QTime(0, 30), QTime(0, 25), 10.0f);
+
+	w.loadFromRecipe(rec);
 
 	return a.exec();
 }

model/database/database.cpp

@@ -15,7 +15,7 @@ ResultTable Database::executeSQL(string statement){
 	this->returnCode = sqlite3_prepare_v2(this->db, statement.c_str(), -1, &stmt, NULL);
 	ResultTable t;
 	if (this->returnCode != SQLITE_OK){
-		fprintf(stderr, "Unable to successfully prepare SQL statement. Error code: %d\nError Message: %s\n", this->returnCode, sqlite3_errmsg(this->db));
+		fprintf(stderr, "Unable to successfully prepare SQL statement. Error code: %d\n\tError Message: %s\n", this->returnCode, sqlite3_errmsg(this->db));
 		return t;
 	}
 
@@ -26,6 +26,19 @@ ResultTable Database::executeSQL(string statement){
 	return t;
 }
 
+bool Database::insertInto(string tableName, vector<string> columnNames, vector<string> values){
+	if (columnNames.size() != values.size() || columnNames.empty()){
+		return false;
+	}
+	string query = "INSERT INTO "+tableName+" (";
+	string cols = combineVector(columnNames, ", ");
+	string vals = combineVector(values, ", ");
+	query += cols + ") VALUES (" + vals + ");";
+	printf("Executing query: %s\n", query.c_str());
+	this->executeSQL(query);
+	return true;
+}
+
 void Database::openConnection(){
     this->returnCode = sqlite3_open(this->filename.c_str(), &this->db);
     if (this->returnCode || this->db == NULL){
@@ -42,6 +55,17 @@ void Database::closeConnection(){
 	this->dbIsOpen = false;
 }
 
+string Database::combineVector(std::vector<string> strings, string mid){
+	if (strings.empty()){
+		return "";
+	}
+	std::string result = "'" + strings[0] + "'";
+	for (std::vector<std::string>::iterator it = strings.begin() + 1; it != strings.end(); ++it){
+		result += mid + "'" + (*it) + "'";
+	}
+	return result;
+}
+
 bool Database::tableExists(string tableName){
 	if (tableName.empty() || this->db == NULL || !this->dbIsOpen){
 		return false;
@@ -49,3 +73,7 @@ bool Database::tableExists(string tableName){
 	ResultTable t = executeSQL("SELECT name FROM sqlite_master WHERE type='table' AND name='"+tableName+"';");
 	return !t.isEmpty();
 }
+
+int Database::getLastInsertedRowId(){
+	return sqlite3_last_insert_rowid(this->db);
+}

model/database/database.h

@@ -3,6 +3,7 @@
 
 #include <string>
 #include <vector>
+#include <numeric>
 
 #include "SQLite/sqlite3.h"
 #include "model/recipe/ingredients/ingredient.h"
@@ -23,8 +24,10 @@ public:
 
 	//Executes an SQL string statement in a safe way and returns the result.
 	ResultTable executeSQL(string statement);
+	bool insertInto(string tableName, vector<string> columnNames, vector<string> values);
 
 	bool tableExists(string tableName);
+	int getLastInsertedRowId();
 private:
     //SQL Instance variables.
     string filename;
@@ -36,6 +39,7 @@ private:
 
     void openConnection();
 	void closeConnection();
+	std::string combineVector(std::vector<std::string> strings, std::string mid);
 };
 
 #endif // DATABASE_H

model/database/recipedatabase.cpp

@@ -6,7 +6,43 @@ RecipeDatabase::RecipeDatabase(string filename) : Database(filename){
 
 void RecipeDatabase::storeRecipe(Recipe recipe){
 	///TODO: Implement this in a smart way using transaction.
+	ResultTable t = this->executeSQL("SELECT * FROM recipe WHERE name='"+recipe.getName()+"';");
+	if (!t.isEmpty()){
+		fprintf(stderr, "Error storing recipe: Recipe with name %s already exists.\n", recipe.getName().c_str());
+	} else {
+		bool success = this->insertInto("recipe",
+						 vector<string>({
+											"name",
+											"createdDate",
+											"cookTime",
+											"prepTime",
+											"servingCount"
+										}),
+						 vector<string>({
+											recipe.getName(),
+											recipe.getCreatedDate().toString().toStdString(),
+											recipe.getCookTime().toString().toStdString(),
+											recipe.getPrepTime().toString().toStdString(),
+											std::to_string(recipe.getServings())
+										}));
+		if (success){
+			//If successful, proceed to insert instructions, image, and ingredients.
 
+		}
+	}
+}
+
+void RecipeDatabase::storeRecipeIngredient(RecipeIngredient ri){
+
+}
+
+void RecipeDatabase::storeIngredient(Ingredient ingredient){
+	ResultTable t = this->executeSQL("SELECT * FROM ingredient WHERE name='"+ingredient.getName()+"';");
+	if (!t.isEmpty()){
+		fprintf(stderr, "Error during storeIngredient: ingredient with name %s already exists.\n", ingredient.getName().c_str());
+	} else {
+		this->insertInto("ingredient", vector<string>({"foodGroup", "name"}), vector<string>({ingredient.getFoodGroup(), ingredient.getName()}));
+	}
 }
 
 void RecipeDatabase::ensureTablesExist(){
@@ -17,24 +53,14 @@ void RecipeDatabase::ensureTablesExist(){
 					 "ingredientId INTEGER PRIMARY KEY,"
 					 "foodGroup varchar,"
 					 "name varchar);");
-	//Images table.
+	//Recipe table. Each recipe can have at most one instruction, and one image.
-	this->executeSQL("CREATE TABLE IF NOT EXISTS image("
-					 "imageNr INTEGER PRIMARY KEY,"
-					 "contentURL varchar);");
-	//Instructions table.
-	this->executeSQL("CREATE TABLE IF NOT EXISTS instruction("
-					 "instructionNr INTEGER PRIMARY KEY,"
-					 "contentURL varchar);");
-	//Recipe table.
 	this->executeSQL("CREATE TABLE IF NOT EXISTS recipe("
 					 "recipeId INTEGER PRIMARY KEY,"
-					 "date date,"
+					 "createdDate date,"
 					 "name varchar,"
-					 "imageNr int,"
 					 "cookTime time,"
 					 "prepTime time,"
-					 "servingCount real,"
+					 "servingCount real);");
-					 "FOREIGN KEY (imageNr) REFERENCES image(imageNr));");
 	//Recipe tags table.
 	this->executeSQL("CREATE TABLE IF NOT EXISTS recipeTag("
 					 "recipeId INTEGER PRIMARY KEY,"
@@ -49,27 +75,4 @@ void RecipeDatabase::ensureTablesExist(){
 					 "comment varchar,"
 					 "FOREIGN KEY (ingredientId) REFERENCES ingredient(ingredientId),"
 					 "FOREIGN KEY (recipeId) REFERENCES recipe(recipeId));");
-	//Recipe Instruction mapping table.
-	this->executeSQL("CREATE TABLE IF NOT EXISTS recipeInstruction("
-					 "instructionNr int,"
-					 "recipeId INTEGER PRIMARY KEY,"
-					 "FOREIGN KEY (instructionNr) REFERENCES instruction(instructionNr),"
-					 "FOREIGN KEY (recipeId) REFERENCES recipe(recipeId));");
-}
-
-void RecipeDatabase::storeInstruction(Instruction instruction){
-
-}
-
-void RecipeDatabase::storeImage(QImage image){
-
-}
-
-void RecipeDatabase::storeIngredient(Ingredient ingredient){
-	ResultTable t = this->executeSQL("SELECT * FROM ingredient WHERE name='"+ingredient.getName()+"';");
-	if (!t.isEmpty()){
-		fprintf(stderr, "Error during storeIngredient: ingredient with name %s already exists.\n", ingredient.getName().c_str());
-	} else {
-		this->executeSQL("INSERT INTO ingredient (foodGroup, name) VALUES ('"+ ingredient.getFoodGroup() +"', '"+ ingredient.getName() +"');");
-	}
 }

model/database/recipedatabase.h

@@ -21,8 +21,7 @@ class RecipeDatabase : public Database
 		void storeRecipe(Recipe recipe);
 
 		//SQL Helper methods.
-		void storeInstruction(Instruction instruction);
+		void storeRecipeIngredient(RecipeIngredient ri);
-		void storeImage(QImage image);
 		void storeIngredient(Ingredient ingredient);
 	private:
 

model/database/resulttable.cpp

@@ -25,10 +25,14 @@ void ResultTable::processRow(sqlite3_stmt *stmt){
 }
 
 void ResultTable::printData(){
+	if (this->isEmpty()){
+		printf("Result table is empty.\n");
+		return;
+	}
 	printf("Printing table: %d by %d\n", this->rowCount(), this->columnCount());
 	for (unsigned int row = 0; row < this->rowCount(); row++){
 		for (unsigned int col = 0; col < this->columnCount(); col++){
-			printf("| %s \t", this->values[row][col].c_str());
+			printf("| %s ", this->values[row][col].c_str());
 		}
 		printf("\n");
 	}

userInterface/mainwindow.cpp

@@ -7,15 +7,6 @@ MainWindow::MainWindow(QWidget *parent) :
     ui->setupUi(this);
 
 	ui->ingredientsListView->setModel(&this->ingredientModel);
-
-    //TESTING CODE
-    vector<RecipeIngredient> ri;
-    ri.push_back(RecipeIngredient("flour", "grains", 3.0f, UnitOfMeasure("cup", "cups", "c")));
-    ri.push_back(RecipeIngredient("Baking Powder", "Additives", 1.0f, UnitOfMeasure("Teaspoon", "Teaspoons", "Tsp")));
-
-    Recipe rec("Example", ri, Instruction("<b>BOLD</b><i>iTaLiCs</i>"), QImage(), vector<RecipeTag>(), QDate::currentDate(), QTime(0, 30), QTime(0, 25), 10.0f);
-
-    this->loadFromRecipe(rec);
 }
 
 MainWindow::~MainWindow(){

utils/fileutils.h

@@ -19,7 +19,7 @@ namespace FileUtils {
 		}
 	}
 
-	void saveInstruction(int nr, Instruction instruction){
+	string saveInstruction(int nr, Instruction instruction){
 		ensureAppDataFolderExists();
 		QString filename = appDataPath + QString::fromStdString(std::to_string(nr)) +".html";
 		QFile file(filename);
@@ -27,8 +27,10 @@ namespace FileUtils {
 			QTextStream stream(&file);
 			stream<<instruction.getHTML().c_str()<<endl;
 			file.close();
+			return filename.toStdString();
 		} else {
 			fprintf(stderr, "Error opening file: %s to write instruction.\n", filename.toStdString().c_str());
+			return "";
 		}
 	}
 

utils/stringutils.h

@@ -0,0 +1,13 @@
+#ifndef STRINGUTILS_H
+#define STRINGUTILS_H
+
+#include <string>
+#include <vector>
+
+namespace StringUtils{
+
+
+
+}
+
+#endif // STRINGUTILS_H