#pragma once

#include <QString>
#include <QStringBuilder>
#include <libpq-fe.h>

namespace Pgsql { class Result; }

/*
class PgAuthId {
public:
	PgAuthId();

	Oid oid = InvalidOid;
	QString name;
	bool super;
	bool inherit;
	bool createRole;
	bool createDB;
	bool canlogin;
	bool replication;
	bool bypassRls;
	int connLimit;
	QDateTime validUntil;*/

/** Defines how a database result fieldname should be converted into a variable
 * name in the target language.
 * 
 */
class VarNameManglingRules {
public:
    enum class CollisionHandling {
        Restrict, ///< An error will be reported and no code generated
        Fqn, ///< Turn into fully qualified name (table_column)
        Number ///< A number will be appended to fields that have the same name
    };
    
    enum class CaseConversion {
        AsIs,
        Upper,
        Lower        
    };

    QString replaceSpaceWith; ///< default is empty string which means remove spaces
    CollisionHandling CollisionHandling = CollisionHandling::Restrict;
    CaseConversion caseConversion = CaseConversion::AsIs; ///< overall case conversion rule
    CaseConversion caseFirstChar = CaseConversion::AsIs; ///< case of the first char
    bool underscoreToCamel = false; ///< remove underscores and make first char after underscore uppercase   
};
/**
 * 
 */
class LanguageConfig {
public:
    /** Default template for declaring a variable of the correct type.
     * exmaple: "{$type} {$varname};"
     */
    QString varDeclTemplate; 
    VarNameManglingRules varNaming;
    
    enum class VariableStrategy {
        UseLocalVariables,
        DeclareClass
    };
    
    QString classStartTemplate;
    QString classEndTemplate;
    QString classFieldTemplate;
};

/** 
 * 
 * There are some default fallbacks in place
 * - smallint > integer
 * - integer > bigint
 * - int2 > smallint
 * - int4 > integer
 * - int8 > bigint
 * 
 * - float > double
 * - text > varchar
 */
class TypeConfig {
public:
    /** The following template allows you to derive the variable name from the result fieldname.
     * 
     * {$} in the suplied value will be replaced with the name of the result field. 
     * 
     * example: {$}
     */
    QString varNameTemplate; 
    QString typeIdent;
    QString varDeclTemplate; ///< Overrules the default template in the language config
    
//     Mapping() = default;
//     Mapping(Oid oid, QString lang_type_ident)
//         : db_oid(oid), lang_type(lang_type_ident)
//         {}
//         
//     bool operator < (const Mapping &rhs) const
//     {
//         return db_oid < rhs.db_oid;
//     }
    
};

class TypeMappings {
public:
    
private:
};

class CodeBuilderConfiguration {
public:
};

class CodeBuilder {
public:    
    QString GenClassDefinition(const Pgsql::Result &result) const;
};