// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2022-2024 Thomas Basler and others
 */
#include "WebApi_device.h"
#include "Configuration.h"
#include "Display_Graphic.h"
#include "PinMapping.h"
#include "RestartHelper.h"
#include "WebApi.h"
#include "WebApi_errors.h"
#include "helper.h"
#include <AsyncJson.h>

void WebApiDeviceClass::init(AsyncWebServer& server, Scheduler& scheduler)
{
    using std::placeholders::_1;

    server.on("/api/device/config", HTTP_GET, std::bind(&WebApiDeviceClass::onDeviceAdminGet, this, _1));
    server.on("/api/device/config", HTTP_POST, std::bind(&WebApiDeviceClass::onDeviceAdminPost, this, _1));
}

void WebApiDeviceClass::onDeviceAdminGet(AsyncWebServerRequest* request)
{
    if (!WebApi.checkCredentials(request)) {
        return;
    }

    AsyncJsonResponse* response = new AsyncJsonResponse();
    auto& root = response->getRoot();
    const CONFIG_T& config = Configuration.get();
    const PinMapping_t& pin = PinMapping.get();

    auto curPin = root["curPin"].to<JsonObject>();
    curPin["name"] = config.Dev_PinMapping;

    auto nrfPinObj = curPin["nrf24"].to<JsonObject>();
    nrfPinObj["clk"] = pin.nrf24_clk;
    nrfPinObj["cs"] = pin.nrf24_cs;
    nrfPinObj["en"] = pin.nrf24_en;
    nrfPinObj["irq"] = pin.nrf24_irq;
    nrfPinObj["miso"] = pin.nrf24_miso;
    nrfPinObj["mosi"] = pin.nrf24_mosi;

    auto cmtPinObj = curPin["cmt"].to<JsonObject>();
    cmtPinObj["clk"] = pin.cmt_clk;
    cmtPinObj["cs"] = pin.cmt_cs;
    cmtPinObj["fcs"] = pin.cmt_fcs;
    cmtPinObj["sdio"] = pin.cmt_sdio;
    cmtPinObj["gpio2"] = pin.cmt_gpio2;
    cmtPinObj["gpio3"] = pin.cmt_gpio3;

    auto w5500PinObj = curPin["w5500"].to<JsonObject>();
    w5500PinObj["sclk"] = pin.w5500_sclk;
    w5500PinObj["mosi"] = pin.w5500_mosi;
    w5500PinObj["miso"] = pin.w5500_miso;
    w5500PinObj["cs"] = pin.w5500_cs;
    w5500PinObj["int"] = pin.w5500_int;
    w5500PinObj["rst"] = pin.w5500_rst;

#if CONFIG_ETH_USE_ESP32_EMAC
    auto ethPinObj = curPin["eth"].to<JsonObject>();
    ethPinObj["enabled"] = pin.eth_enabled;
    ethPinObj["phy_addr"] = pin.eth_phy_addr;
    ethPinObj["power"] = pin.eth_power;
    ethPinObj["mdc"] = pin.eth_mdc;
    ethPinObj["mdio"] = pin.eth_mdio;
    ethPinObj["type"] = pin.eth_type;
    ethPinObj["clk_mode"] = pin.eth_clk_mode;
#endif

    auto displayPinObj = curPin["display"].to<JsonObject>();
    displayPinObj["type"] = pin.display_type;
    displayPinObj["data"] = pin.display_data;
    displayPinObj["clk"] = pin.display_clk;
    displayPinObj["cs"] = pin.display_cs;
    displayPinObj["reset"] = pin.display_reset;

    auto ledPinObj = curPin["led"].to<JsonObject>();
    for (uint8_t i = 0; i < PINMAPPING_LED_COUNT; i++) {
        ledPinObj["led" + String(i)] = pin.led[i];
    }

    auto display = root["display"].to<JsonObject>();
    display["rotation"] = config.Display.Rotation;
    display["power_safe"] = config.Display.PowerSafe;
    display["screensaver"] = config.Display.ScreenSaver;
    display["contrast"] = config.Display.Contrast;
    display["locale"] = config.Display.Locale;
    display["diagramduration"] = config.Display.Diagram.Duration;
    display["diagrammode"] = config.Display.Diagram.Mode;

    auto leds = root["led"].to<JsonArray>();
    for (uint8_t i = 0; i < PINMAPPING_LED_COUNT; i++) {
        auto led = leds.add<JsonObject>();
        led["brightness"] = config.Led_Single[i].Brightness;
    }

    WebApi.sendJsonResponse(request, response, __FUNCTION__, __LINE__);
}

void WebApiDeviceClass::onDeviceAdminPost(AsyncWebServerRequest* request)
{
    if (!WebApi.checkCredentials(request)) {
        return;
    }

    AsyncJsonResponse* response = new AsyncJsonResponse();
    JsonDocument root;
    if (!WebApi.parseRequestData(request, response, root)) {
        return;
    }

    auto& retMsg = response->getRoot();

    if (!(root["curPin"].is<JsonObject>()
            || root["display"].is<JsonObject>())) {
        retMsg["message"] = "Values are missing!";
        retMsg["code"] = WebApiError::GenericValueMissing;
        WebApi.sendJsonResponse(request, response, __FUNCTION__, __LINE__);
        return;
    }

    if (root["curPin"]["name"].as<String>().length() == 0 || root["curPin"]["name"].as<String>().length() > DEV_MAX_MAPPING_NAME_STRLEN) {
        retMsg["message"] = "Pin mapping must between 1 and " STR(DEV_MAX_MAPPING_NAME_STRLEN) " characters long!";
        retMsg["code"] = WebApiError::HardwarePinMappingLength;
        retMsg["param"]["max"] = DEV_MAX_MAPPING_NAME_STRLEN;
        WebApi.sendJsonResponse(request, response, __FUNCTION__, __LINE__);
        return;
    }

    bool performRestart = false;

    {
        auto guard = Configuration.getWriteGuard();
        auto& config = guard.getConfig();

        performRestart = root["curPin"]["name"].as<String>() != config.Dev_PinMapping;

        strlcpy(config.Dev_PinMapping, root["curPin"]["name"].as<String>().c_str(), sizeof(config.Dev_PinMapping));
        config.Display.Rotation = root["display"]["rotation"].as<uint8_t>();
        config.Display.PowerSafe = root["display"]["power_safe"].as<bool>();
        config.Display.ScreenSaver = root["display"]["screensaver"].as<bool>();
        config.Display.Contrast = root["display"]["contrast"].as<uint8_t>();
        strlcpy(config.Display.Locale, root["display"]["locale"].as<String>().c_str(), sizeof(config.Display.Locale));
        config.Display.Diagram.Duration = root["display"]["diagramduration"].as<uint32_t>();
        config.Display.Diagram.Mode = root["display"]["diagrammode"].as<DiagramMode_t>();

        for (uint8_t i = 0; i < PINMAPPING_LED_COUNT; i++) {
            config.Led_Single[i].Brightness = root["led"][i]["brightness"].as<uint8_t>();
            config.Led_Single[i].Brightness = min<uint8_t>(100, config.Led_Single[i].Brightness);
        }
    }

    auto const& config = Configuration.get();

    Display.setDiagramMode(static_cast<DiagramMode_t>(config.Display.Diagram.Mode));
    Display.setOrientation(config.Display.Rotation);
    Display.enablePowerSafe = config.Display.PowerSafe;
    Display.enableScreensaver = config.Display.ScreenSaver;
    Display.setContrast(config.Display.Contrast);
    Display.setLocale(config.Display.Locale);
    Display.Diagram().updatePeriod();

    WebApi.writeConfig(retMsg);

    WebApi.sendJsonResponse(request, response, __FUNCTION__, __LINE__);

    if (performRestart) {
        RestartHelper.triggerRestart();
    }
}
