rc-gateway/gateway/include/ha.h

#pragma once

#include <ArduinoJson.h>

#define JSON_SIZE   512
#define TOPIC_SIZE  255
#define DEVICE_ID "rc-gateway"

namespace Ha {

    struct Component {
        const char* name;
        char* id;
        const char* type;
        char configTopic[TOPIC_SIZE];

        Component(const char* name, const char* id, const char* type) : name(name), id((char*)id), type(type) {
            sprintf(configTopic, "homeassistant/%s/rc-gateway/%s/config", type, id);
        }

        virtual void buildUniqueId(char* uniqueId) = 0;

        virtual void buildConfig(JsonDocument& jsonDoc) {
            buildDeviceConfig(jsonDoc);
            jsonDoc["name"] = name;
            char uniqueId[50];
            buildUniqueId(uniqueId);
            jsonDoc["unique_id"] = uniqueId;
        }

        virtual void buildDeviceConfig(JsonDocument& jsonDoc) {
            JsonObject device = jsonDoc.createNestedObject("device");
            device["name"] = "RC Gateway";
            device["model"] = "Huzzah Esp8266";
            device["manufacturer"] = "Adafruit";
            JsonArray connections = device.createNestedArray("connections");
            JsonArray mac = connections.createNestedArray();
            mac.add("mac");
            mac.add(WiFi.macAddress());
            JsonArray identifiers = device.createNestedArray("identifiers");
            identifiers.add(DEVICE_ID);
        }
    };

    struct Command : Component {
        char commandTopic[TOPIC_SIZE];

        Command(const char* name, const char* id, const char* type) : Component(name, id, type) {
        }

        void buildUniqueId(char* uniqueId) override {
            sprintf(uniqueId, "rc_gateway_%s", id);
        }

        void buildConfig(JsonDocument& jsonDoc) override {
            Component::buildConfig(jsonDoc);
            jsonDoc["command_topic"] = commandTopic;
        }

    };

    typedef void (*onMessage)(const char* msg);
    struct Button : Command {
        static constexpr const char* type = "button";
        onMessage f;

        Button(const char* name, const char* id, onMessage f) : Command(name, id, type), f(f) {
            sprintf(commandTopic, "homeassistant/%s/rc-gateway/%s", type, id);
        }

    };

    typedef uint16_t (*publisherFunc)(const char* topic, const char* message);
    struct Switch : Command {
        static constexpr const char* type = "switch";
        char stateTopic[TOPIC_SIZE];
        const char* area;
        publisherFunc publisher;

        virtual void onCommand(const char* msg){}
        virtual void addToMap(){}

        Switch(const char* name, const char* id, publisherFunc publisher = nullptr)
            : Command(name, id, type), publisher(publisher) {
            sprintf(commandTopic, "homeassistant/%s/rc-gateway/%s/set", type, id);
        }

        void buildDeviceConfig(JsonDocument& jsonDoc) override {
            JsonObject device = jsonDoc.createNestedObject("device");
            device["name"] = name;
            device["via_device"] = DEVICE_ID;
            device["suggested_area"] = area;
            JsonArray identifiers = device.createNestedArray("identifiers");
            identifiers.add(id);
        }

        void buildConfig(JsonDocument& jsonDoc) override {
            Command::buildConfig(jsonDoc);
            jsonDoc["name"] = nullptr;
            jsonDoc["device_class"] = "outlet";
            jsonDoc["retain"] = true;
            if (stateTopic[0]) jsonDoc["state_topic"] = stateTopic;
        }

        Switch* withStateTopic() {
            sprintf(stateTopic, "homeassistant/%s/rc-gateway/%s/state", type, id);
            return this;
        }

        Switch* withArea(const char* area) {
            this->area = area;
            return this;
        }

        void publishState(bool state) {
            publisher(stateTopic, state ? "ON" : "OFF");
        }
    };

    struct PollinSwitch : Switch {
        const char* group;
        unsigned char channel;

        PollinSwitch(const char* name, const char* group, const unsigned char channel, publisherFunc publisher)
            : Switch(name, Protocol_1::buildId(group, channel), publisher), group(group), channel(channel) {
            sprintf(commandTopic, "homeassistant/%s/rc-gateway/%s/set", type, id);
        }

        void onCommand(const char* msg) override {
            (String{ "ON" }.equals(msg)) ? mySwitch.switchOn(group, channel) : mySwitch.switchOff(group, channel);
            publisher(stateTopic, msg);
        }

        void buildConfig(JsonDocument& jsonDoc) override {
            Switch::buildConfig(jsonDoc);
            JsonObject device = jsonDoc["device"];
            device["manufacturer"] = "Pollin";
        }

        void addToMap() override {
            p1Switches.insert({string(id), this});
        }

    };

    struct EasyHomeSwitch : Switch {
        unsigned long on[8] = {4326554, 4537114, 4767530, 4972714};
        unsigned long off[8] = {4483146, 4626810, 4661562, 4819642};

        EasyHomeSwitch(const char* name, const char* id, unsigned long on[4], unsigned long off[4], publisherFunc publisher)
            : Switch(name, id, publisher) {
            memcpy(&this->on[4], on, 4*sizeof(unsigned long));
            memcpy(&this->off[4], off, 4*sizeof(unsigned long));
            sprintf(commandTopic, "homeassistant/%s/rc-gateway/%s/set", type, id);
        }

        void onCommand(const char* msg) override {
            mySwitch.setProtocol(4);
            String{ "ON" }.equals(msg) ? mySwitch.send(on[4], 24) : mySwitch.send(off[4], 24);
            publisher(stateTopic, msg);
        }

        void buildConfig(JsonDocument& jsonDoc) override {
            Switch::buildConfig(jsonDoc);
            JsonObject device = jsonDoc["device"];
            device["manufacturer"] = "Intertek";
            device["model"] = "Easy Home";
        }

        void addToMap() override {
            for (int i = 0; i < 8; i++) {
                onSwitches.insert({on[i], this});
                offSwitches.insert({off[i], this});
            }
        }
    };

    struct Sensor : Component {
        const char* deviceClass;
        const char* unitMeasure;
        const char* valueTemplate;
        static constexpr const char* stateTopic = "homeassistant/sensor/rc-gateway/state";

        Sensor(const char* name, const char* id) : Component(name, id, "sensor") {
        }

        void buildUniqueId(char* uniqueId) override {
            sprintf(uniqueId, "living_room_%s", id);
        }

        void buildConfig(JsonDocument& jsonDoc) override {
            Component::buildConfig(jsonDoc);
            jsonDoc["device_class"] = deviceClass;
            jsonDoc["unit_of_measurement"] = unitMeasure;
            jsonDoc["value_template"] = valueTemplate;
            jsonDoc["state_topic"] = stateTopic;
        }

        void buildDeviceConfig(JsonDocument& jsonDoc) override {
            JsonObject device = jsonDoc.createNestedObject("device");
            device["name"] = "Living room";
            device["model"] = "BPM280";
            device["suggested_area"] = "Living room";
            device["via_device"] = "rc-gateway";
            JsonArray identifiers = device.createNestedArray("identifiers");
            identifiers.add("esp-clock-living-room");
        }

    };

    struct TemperatureSensor : Sensor {
        TemperatureSensor(const char* name, const char* id) : Sensor(name, id) {
            deviceClass = "temperature";
            unitMeasure = "°C";
            valueTemplate = "{{ value_json.temperature }}";
        }
    };

    struct HumiditySensor : Sensor {
        HumiditySensor(const char* name, const char* id) : Sensor(name, id) {
            deviceClass = "humidity";
            unitMeasure = "%";
            valueTemplate = "{{ value_json.humidity }}";
        }
    };

    struct PressureSensor : Sensor {
        PressureSensor(const char* name, const char* id) : Sensor(name, id) {
            deviceClass = "pressure";
            unitMeasure = "hPa";
            valueTemplate = "{{ value_json.pressure }}";
        }
    };

    struct AltitudeSensor : Sensor {
        AltitudeSensor(const char* name, const char* id) : Sensor(name, id) {
            deviceClass = "distance";
            unitMeasure = "m";
            valueTemplate = "{{ value_json.altitude }}";
        }
    };
}