GpioController.cpp

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#include "GpioController.h"
#include "hardware/gpio.h"
#include <cstdio>
#include "http/JsonResponse.h"
#include "PicoModel.h"
 
using nlohmann::json;
 
GpioController::GpioController(Router& r, PicoModel &pico)
    : FrameworkController("GpioController", r, 1024, 1), pico(pico) {}
 
void GpioController::initRoutes() {
 
    printf("[GpioController] Initializing GPIO routes...\n");
 
    router.addRoute("GET", "/api/v1/gpio/{pin}", [this](HttpRequest& req, HttpResponse& res, const RouteMatch& match) {
        getState(req, res, match.ordered);
    });
 
    router.addRoute("GET", "/api/v1/gpios", [this](HttpRequest& req, HttpResponse& res, const RouteMatch& match) {
        handleGetMultipleGpios(req, res);
    });
    
    
    router.addRoute("POST", "/api/v1/gpio/{pin}/{value}", [this](HttpRequest& req, HttpResponse& res, const RouteMatch& match) {
        setState(req, res, match.ordered);
    });
}
 
void GpioController::getState(HttpRequest& req, HttpResponse& res, const std::vector<std::string>& params) {
    int pin = std::stoi(params[0]);
    bool state = pico.getGpioState(pin);
    res.json({{"pin", pin}, {"state", state ? 1 : 0}});
}
 
void GpioController::setState(HttpRequest& req, HttpResponse& res, const std::vector<std::string>& params) {
    int pin = std::stoi(params[0]);
    int value = std::stoi(params[1]);
    pico.setGpioState(pin, value != 0); // Convert to boolean
    res.json({{"pin", pin}, {"state", value}});
}
 
void GpioController::handleGetMultipleGpios(HttpRequest& req, HttpResponse& res)
{
    auto queryParams = req.getQueryParams();
    if (queryParams.empty())
    {
        JsonResponse::sendNoContent(res);
        return;
    }
 
    json response = json::array();
    bool foundPinParam = false;
 
    for (const auto& param : queryParams)
    {
        if (param.first == "pin")
        {
            foundPinParam = true;
            int pin = atoi(param.second.c_str());
 
            int state = pico.getGpioState(pin);
 
            json pinState = {
                {"pin", pin},
                {"state", state}
            };
 
            response.push_back(pinState);
        }
    }
 
    if (!foundPinParam)
    {
        JsonResponse::sendNoContent(res);
        return;
    }
 
    res.json(response);
}