config_category.h

#ifndef _CONFIG_CATEGORY_H
#define _CONFIG_CATEGORY_H

/*
 * Fledge category management
 *
 * Copyright (c) 2017-2018 OSisoft, LLC
 *
 * Released under the Apache 2.0 Licence
 *
 * Author: Mark Riddoch, Massimiliano Pinto
 */

#include <string>
#include <vector>
#include <map>
#include <rapidjson/document.h>
#include <json_utils.h>

class ConfigCategoryDescription {
    public:
        ConfigCategoryDescription(const std::string& name, const std::string& description) :
                m_name(name), m_displayName(name), m_description(description) {};
        ConfigCategoryDescription(const std::string& name, const std::string& displayName, const std::string& description) :
                m_name(name), m_displayName(displayName), m_description(description) {};
        std::string getName() const { return m_name; };
        std::string getDisplayName() const { return m_displayName; };
        std::string getDescription() const { return m_description; };
        // JSON string with m_name and m_description
        std::string     toJSON() const;
    private:
        const std::string   m_name;
        const std::string   m_displayName;
        const std::string   m_description;
};

class ConfigCategories {
    public:
        ConfigCategories(const std::string& json); 
        ConfigCategories(); // Constructor without parameters
        ~ConfigCategories();
        unsigned int            length() { return m_categories.size(); };
        ConfigCategoryDescription   *operator[] (const unsigned int idx) {
                        return m_categories[idx];
                    };
        // Add one category name with description
        void            addCategoryDescription(ConfigCategoryDescription* elem);
        // JSON string of all categories
        std::string     toJSON() const;

    private:
        std::vector<ConfigCategoryDescription *>    m_categories;
    
};

class ConfigCategory {
    public:
        enum ItemType {
            UnknownType,
            StringItem,
            EnumerationItem,
            JsonItem,
            BoolItem,
            NumberItem,
            DoubleItem,
            ScriptItem,
            CategoryType,
            CodeItem,
            BucketItem,
            ListItem,
            KVListItem
        };

        ConfigCategory(const std::string& name, const std::string& json);
        ConfigCategory() {};
        ConfigCategory(const ConfigCategory& orig);
        ConfigCategory(const ConfigCategory *orig);
        ~ConfigCategory();
        void                addItem(const std::string& name, const std::string description,
                            const std::string& type, const std::string def,
                            const std::string& value);
        void                addItem(const std::string& name, const std::string description,
                            const std::string def, const std::string& value,
                            const std::vector<std::string> options);
            void                removeItems();
        void                removeItemsType(ItemType type);
        void                keepItemsType(ItemType type);
        bool                            extractSubcategory(ConfigCategory &subCategories);
        void                setDescription(const std::string& description);
        std::string                     getName() const { return m_name; };
        std::string                     getDescription() const { return m_description; };

        std::string                     getDisplayName() const { return m_displayName; };
        void                            setDisplayName(const std::string& displayName) {m_displayName = displayName;};

        unsigned int            getCount() const { return m_items.size(); };
        bool                itemExists(const std::string& name) const;
        bool                setItemDisplayName(const std::string& name, const std::string& displayName);
        std::string         getValue(const std::string& name) const;
        std::vector<std::string>    getValueList(const std::string& name) const;
        std::map<std::string, std::string>  getValueKVList(const std::string& name) const;
        std::string         getType(const std::string& name) const;
        std::string         getDescription(const std::string& name) const;
        std::string         getDefault(const std::string& name) const;
        bool                setDefault(const std::string& name, const std::string& value);
        bool                setValue(const std::string& name, const std::string& value);
        std::string         getDisplayName(const std::string& name) const;
        std::string         getmParentName() const {return (m_parent_name);};
        std::vector<std::string>    getOptions(const std::string& name) const;
        std::string         getLength(const std::string& name) const;
        std::string         getMinimum(const std::string& name) const;
        std::string         getMaximum(const std::string& name) const;
        bool                isString(const std::string& name) const;
        bool                isEnumeration(const std::string& name) const;
        bool                isJSON(const std::string& name) const;
        bool                isBool(const std::string& name) const;
        bool                isNumber(const std::string& name) const;
        bool                isDouble(const std::string& name) const;
        bool                isList(const std::string& name) const;
        bool                isKVList(const std::string& name) const;
        bool                isDeprecated(const std::string& name) const;
        std::string         toJSON(const bool full=false) const;
        std::string         itemsToJSON(const bool full=false) const;
        ConfigCategory&         operator=(ConfigCategory const& rhs);
        ConfigCategory&         operator+=(ConfigCategory const& rhs);
        void                setItemsValueFromDefault();
        void                checkDefaultValuesOnly() const;
        std::string             itemToJSON(const std::string& itemName) const;
        std::string         to_string(const rapidjson::Value& v) const;
        std::vector<std::string>    getPermissions(const std::string& name) const;
        bool                hasPermission(const std::string& name, const std::string& username) const;
        enum ItemAttribute {
                    ORDER_ATTR,
                    READONLY_ATTR,
                    MANDATORY_ATTR,
                    FILE_ATTR,
                    MINIMUM_ATTR,
                    MAXIMUM_ATTR,
                    LENGTH_ATTR,
                    VALIDITY_ATTR,
                    GROUP_ATTR,
                    DISPLAY_NAME_ATTR,
                    DEPRECATED_ATTR,
                    RULE_ATTR,
                    BUCKET_PROPERTIES_ATTR,
                    LIST_SIZE_ATTR,
                    ITEM_TYPE_ATTR,
                    LIST_NAME_ATTR,
                    KVLIST_KEY_NAME_ATTR,
                    KVLIST_KEY_DESCRIPTION_ATTR,
                    JSON_SCHEMA_ATTR
                    };
        std::string         getItemAttribute(const std::string& itemName,
                                 ItemAttribute itemAttribute) const;

        bool                setItemAttribute(const std::string& itemName,
                                 ItemAttribute itemAttribute, const std::string& value);

        std::vector<std::pair<std::string,std::string>>* parseBucketItemValue(const std::string &);

    protected:
        class CategoryItem {
            public:
                CategoryItem(const std::string& name, const rapidjson::Value& item);
                CategoryItem(const std::string& name, const std::string& description,
                         const std::string& type, const std::string def,
                         const std::string& value);
                CategoryItem(const std::string& name, const std::string& description,
                         const std::string def, const std::string& value,
                         const std::vector<std::string> options);
                CategoryItem(const CategoryItem& rhs);
                // Return both "value" and "default" items
                std::string toJSON(const bool full=false) const;
                // Return only "default" items
                std::string defaultToJSON() const;

            public:
                std::string     m_name;
                std::string m_displayName;
                std::string     m_type;
                std::string     m_default;
                std::string     m_value;
                std::string     m_description;
                std::string     m_order;
                std::string     m_readonly;
                std::string     m_mandatory;
                std::string     m_deprecated;
                std::string m_length;
                std::string m_minimum;
                std::string m_maximum;
                std::string     m_filename;
                std::vector<std::string>
                        m_options;
                std::string     m_file;
                ItemType    m_itemType;
                std::string m_validity;
                std::string m_group;
                std::string m_rule;
                std::string m_bucketProperties;
                std::string m_listSize;
                std::string m_listItemType;
                std::string m_listName;
                std::string m_kvlistKeyName;
                std::string m_kvlistKeyDescription;
                std::vector<std::string>
                        m_permissions;
                std::string m_jsonSchema;
        };
        std::vector<CategoryItem *> m_items;
        std::string         m_name;
        std::string                 m_parent_name;
        std::string         m_description;
        std::string         m_displayName;

    public:
        using iterator = std::vector<CategoryItem *>::iterator;
        using const_iterator = std::vector<CategoryItem *>::const_iterator;

        const_iterator begin() const { return m_items.begin(); }
        const_iterator end() const { return m_items.end(); }
        const_iterator cbegin() const { return m_items.cbegin(); }
        const_iterator cend() const { return m_items.cend(); }
        
};

class DefaultConfigCategory : public ConfigCategory
{
    public:
        DefaultConfigCategory(const std::string& name, const std::string& json);
        DefaultConfigCategory(const ConfigCategory& orig) : ConfigCategory(orig)
        {
        };
        ~DefaultConfigCategory();
        std::string toJSON() const;
        std::string itemsToJSON() const;
};

class ConfigCategoryChange : public ConfigCategory
{
    public:
        ConfigCategoryChange(const std::string& json);
};

class ConfigItemNotFound : public std::exception {
    public:
        virtual const char *what() const throw()
        {
            return "Configuration item not found in configuration category";
        }
};

class ConfigMalformed : public std::exception {
    public:
        virtual const char *what() const throw()
        {
            return "Configuration category JSON is malformed";
        }
};

class ConfigValueFoundWithDefault : public std::exception {
    public:
        // Constructor with parameter
        ConfigValueFoundWithDefault(const std::string& item)
        {
            m_errmsg = "Configuration item '";
            m_errmsg.append(item);
            m_errmsg += "' has both 'value' and 'default' fields.";
        };

        virtual const char *what() const throw()
        {
            return m_errmsg.c_str();
        }
    private:
        std::string m_errmsg;
};

class ConfigItemAttributeNotFound : public std::exception {
    public:
        virtual const char *what() const throw()
        {
            return "Configuration item attribute not found in configuration category";
        }
};

class ConfigItemNotAList : public std::exception {
        public:
                virtual const char *what() const throw()
                {
                        return "Configuration item is not a list type item";
                }
};
#endif