/**
 * @file CommandHandler.cpp
 * @author Jens True (jens.chr.true@gmail.com)
 * @brief CommandHandler implementation
 * @version 0.1
 * @date 2021-11-10
 * 
 * @copyright Copyright (c) 2021
 * 
 */
#include "CommandHandler.h"

#include "Arduino.h"
#include "ArduinoJson.h"

CommandHandler::CommandHandler(DisplayProxy *display)
{
    this->display = display;
}

bool CommandHandler::parseJSON(const char *cmd)
{
    debugSerial("parseJSON", cmd);

    StaticJsonDocument<32> json;
    DeserializationError error = deserializeJson(json, cmd);

    // Test if parsing succeeds.
    if (error)
    {
        Serial.print(F("deserializeJson() failed: "));
        Serial.println(error.c_str());
        return false;
    }

    const char *command = json["cmd"];
    if (strcmp("write", command) == 0 && json["text"].is<const char*>() && json["x"].is<int>() && json["y"].is<int>())
    {
        const char *text = json["text"];
        int x = json["x"];
        int y = json["y"];

        this->debugSerial(command, text);
        this->display->write(x, y, text);
        return true;
    }

    if (strcmp("clear", command) == 0)
    {
        this->display->clear();
        return true;
    }

    if (strcmp("offset", command) == 0)
    {
        int x = json["x"];
        int y = json["y"];
        debugSerial("offset unhandled");
        //this->display->setOffset(x, y);
        return true;
    }

    return false;
}

void CommandHandler::debugSerial(const char *text)
{
    Serial.print(F("CommandHandler: "));
    Serial.println(text);
}

void CommandHandler::debugSerial(const char *command, const char *text)
{
    Serial.print(F("CommandHandler: "));
    Serial.print(command);
    Serial.print(" > ");
    Serial.println(text);
}