/*
 * Stairs
 * Copyright 2017 (c) Mark van Renswoude
 *
 * https://git.x2software.net/pub/Stairs
*/
#include "api.h"
#include <ArduinoJson.h>
#include <IPAddress.h>
#include <ESP8266WiFi.h>
#include "shared.h"
#include "../assets/version.h"
#include "../debug.h"
#include "../global.h"
#include "../settings/connection.h"
#include "../settings/triggers/time.h"


void handleGetSteps(AsyncWebServerRequest *request)
{
  _dln("API :: get steps");

  DynamicJsonBuffer jsonBuffer(JSON_ARRAY_SIZE(17));

  bool target = !request->hasParam("current");

  JsonArray& root = jsonBuffer.createArray();
  for (uint8_t step = 0; step < stepsSettings->count(); step++)
    root.add(stairs->get(step, target));

  AsyncResponseStream *response = request->beginResponseStream("application/json");
  root.printTo(*response);

  request->send(response);
}


void handlePostSteps(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total)
{
  _dln("API :: post steps");

  DynamicJsonBuffer jsonBuffer(2*JSON_ARRAY_SIZE(17) + JSON_OBJECT_SIZE(3) + 130);
  JsonObject& root = jsonBuffer.parseObject((char*)data);
  if (!root.success())
  {
    request->send(400);
    return;
  }

  uint16_t transitionTime = root["transitionTime"];
  JsonArray& values = root["values"];

  JsonArray& startTime = root["startTime"];
  size_t startTimeCount = startTime.size();

  size_t valueCount = values.size();
  if (valueCount > stepsSettings->count())
    valueCount = stepsSettings->count();


  for (uint8_t step = 0; step < valueCount; step++)
    stairs->set(step, values[step], transitionTime, step < startTimeCount ? startTime[step] : 0);

  request->send(200);
}


void handleGetTimeTriggers(AsyncWebServerRequest *request)
{
  _dln("API :: get time triggers");

  uint8_t count = timeTriggerSettings->triggerCount();

  DynamicJsonBuffer jsonBuffer(JSON_ARRAY_SIZE(count) + JSON_OBJECT_SIZE(3) + count*JSON_OBJECT_SIZE(5));
  JsonObject& root = jsonBuffer.createObject();
  root["enabled"] = timeTriggerSettings->enabled();
  root["transitionTime"] = timeTriggerSettings->transitionTime();

  JsonArray& jsonTriggers = root.createNestedArray("triggers");

  for (uint8_t i = 0; i < count; i++)
  {
    TimeTrigger* trigger = timeTriggerSettings->trigger(i);

    JsonObject& jsonTrigger = jsonTriggers.createNestedObject();
    jsonTrigger["time"] = trigger->time;
    jsonTrigger["daysOfWeek"] = trigger->daysOfWeek;
    jsonTrigger["brightness"] = trigger->brightness;
    jsonTrigger["triggerType"] = (uint8_t)trigger->triggerType;
    jsonTrigger["enabled"] = trigger->enabled;
  }

  AsyncResponseStream *response = request->beginResponseStream("application/json");
  root.printTo(*response);

  request->send(response);
}


void handlePostTimeTriggers(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total)
{
  _dln("API :: post time triggers");

  DynamicJsonBuffer jsonBuffer(JSON_ARRAY_SIZE(10) + JSON_OBJECT_SIZE(3) + 10*JSON_OBJECT_SIZE(5) + 510);
  JsonObject& root = jsonBuffer.parseObject((char*)data);
  if (!root.success())
  {
    request->send(400);
    return;
  }

  JsonArray& jsonTriggers = root["triggers"];
  if (jsonTriggers.size() > 255)
  {
    request->send(400);
    return;
  }

  timeTriggerSettings->enabled(root["enabled"]);
  timeTriggerSettings->transitionTime(root["transitionTime"]);
  timeTriggerSettings->beginSetTriggers(jsonTriggers.size());

  TimeTrigger trigger;
  for (uint8_t i = 0; i < jsonTriggers.size(); i++)
  {
    JsonObject& jsonTrigger = jsonTriggers[i];

    trigger.time = jsonTrigger["time"];
    trigger.daysOfWeek = jsonTrigger["daysOfWeek"];
    trigger.brightness = jsonTrigger["brightness"];
    trigger.triggerType = (TimeTriggerType)(uint8_t)jsonTrigger["triggerType"];
    trigger.enabled = jsonTrigger["enabled"];

    timeTriggerSettings->setTrigger(i, &trigger);
  }

  timeTriggerSettings->endSetTriggers();
  timeTriggerSettings->write();
  timeTriggerSettingsChanged = true;

  request->send(200);
}


void registerAPIRoutes(AsyncWebServer* server)
{
  server->on("/api/steps", HTTP_GET, handleGetSteps);
  server->on("/api/steps", HTTP_POST, devNullRequest, devNullFileUpload, handlePostSteps);

  server->on("/api/triggers/time", HTTP_GET, handleGetTimeTriggers);
  server->on("/api/triggers/time", HTTP_POST, devNullRequest, devNullFileUpload, handlePostTimeTriggers);
}