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// SPDX-License-Identifier: BSD-3-Clause
#ifndef INVERTER_TOOLS_PRINT_H
#define INVERTER_TOOLS_PRINT_H
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <ios>
#include <iomanip>
#include <nlohmann/json.hpp>
#include "src/util.h"
namespace formatter {
using nlohmann::json;
using nlohmann::ordered_json;
/**
* Enumerations
*/
enum class Unit {
None = 0,
V,
A,
Wh,
VA,
Hz,
Percentage,
Celsius,
};
enum class Format {
Table,
SimpleTable,
JSON,
};
std::ostream& operator<<(std::ostream& os, Unit val);
/**
* Helper functions
*/
template <typename T>
std::string to_str(T& v) {
std::ostringstream buf;
buf << v;
return buf.str();
}
/**
* Items
*/
template <typename T>
struct TableItem {
explicit TableItem(std::string key, std::string title, T value, Unit unit = Unit::None, unsigned precision = 0) :
key(std::move(key)),
title(std::move(title)),
value(value),
unit(unit) {}
std::string key;
std::string title;
T value;
Unit unit;
};
template <typename T>
struct ListItem {
explicit ListItem(T value) : value(value) {}
T value;
};
/**
* Items holders
*/
class Formattable {
protected:
Format format_;
public:
explicit Formattable(Format format) : format_(format) {}
virtual ~Formattable() = default;
virtual std::ostream& writeJSON(std::ostream& os) const = 0;
virtual std::ostream& writeTable(std::ostream& os) const = 0;
virtual std::ostream& writeSimpleTable(std::ostream& os) const = 0;
friend std::ostream& operator<<(std::ostream& os, Formattable const& ref) {
switch (ref.format_) {
case Format::Table:
return ref.writeTable(os);
case Format::SimpleTable:
return ref.writeSimpleTable(os);
case Format::JSON:
return ref.writeJSON(os);
}
return os;
}
};
// T must have `operator<<` and `basic_json toJSON()` methods
template <typename T>
class Table : public Formattable {
protected:
std::vector<TableItem<T>> v_;
public:
explicit Table(Format format, std::vector<TableItem<T>> v)
: Formattable(format), v_(v) {}
std::ostream& writeSimpleTable(std::ostream& os) const override {
for (const auto& item: v_) {
os << item.key << " ";
std::string value = to_str(item.value);
bool space = string_has(value, ' ');
if (space)
os << "\"";
os << value;
if (space)
os << "\"";
if (item.unit != Unit::None)
os << " " << item.unit;
if (&item != &v_.back())
os << std::endl;
}
return os;
}
std::ostream& writeTable(std::ostream& os) const override {
int maxWidth = 0;
for (const auto& item: v_) {
int width = item.title.size()+1 /* colon */;
if (width > maxWidth)
maxWidth = width;
}
std::ios_base::fmtflags f(os.flags());
os << std::left;
for (const auto &item: v_) {
os << std::setw(maxWidth) << (item.title+":") << " " << item.value;
if (item.unit != Unit::None)
os << " " << item.unit;
if (&item != &v_.back())
os << std::endl;
}
os.flags(f);
return os;
}
std::ostream& writeJSON(std::ostream& os) const override {
ordered_json j = {
{"result", "ok"},
{"data", {}}
};
for (const auto &item: v_) {
if (item.unit != Unit::None) {
json jval = json::object();
jval["value"] = item.value.toJSON();
jval["unit"] = to_str(item.unit);
j["data"][item.key] = jval;
} else {
j["data"][item.key] = item.value.toJSON();
}
}
return os << j.dump();
}
};
template <typename T>
class List : public Formattable {
protected:
std::vector<ListItem<T>> v_;
public:
explicit List(Format format, std::vector<ListItem<T>> v)
: Formattable(format), v_(v) {}
std::ostream& writeSimpleTable(std::ostream& os) const override {
return writeTable(os);
}
std::ostream& writeTable(std::ostream& os) const override {
for (const auto &item: v_) {
os << item.value;
if (&item != &v_.back())
os << std::endl;
}
return os;
}
std::ostream& writeJSON(std::ostream& os) const override {
json data = {};
ordered_json j;
j["result"] = "ok";
for (const auto &item: v_)
data.push_back(item.value.toJSON());
j["data"] = data;
return os << j.dump();
}
};
class Status : public Formattable {
protected:
bool value_;
std::string message_;
public:
explicit Status(Format format, bool value, std::string message)
: Formattable(format), value_(value), message_(std::move(message)) {}
std::ostream& writeSimpleTable(std::ostream& os) const override {
return writeTable(os);
}
std::ostream& writeTable(std::ostream& os) const override {
os << (value_ ? "ok" : "error");
if (!message_.empty())
os << ": " << message_;
return os;
}
std::ostream& writeJSON(std::ostream& os) const override {
ordered_json j = {
{"result", (value_ ? "ok" : "error")}
};
if (!message_.empty())
j["message"] = message_;
return os << j.dump();
}
};
}
#endif
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