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const apiKey = '065b816a82110d32a0a268b7666da270';
const assignedCity = 'Milton Keynes';

const searchInput = document.querySelector('input');
const searchButton = document.querySelector('button');
const weatherDiv = document.querySelector('.weather');

const historyButton = document.querySelector('.historyButton');
var weatherHistoryDiv = document.getElementById("weatherHistory");

var cityToSearch=assignedCity;

weatherHistoryDiv.style.display = "none";
const getWeatherData = async (city) => {
  try {
    const response = await fetch(
      // `https://api.openweathermap.org/data/2.5/weather?q=${city}&units=metric&appid=${apiKey}`
      `https://history.openweathermap.org/data/2.5/history/city?id=2885679&type=day&appid=065b816a82110d32a0a268b7666da270&cnt=7`
    );
    const data = await response.json();
    console.log("data is found")
    return data;
  } catch (error) {
    console.log(error);
  }
};


function insertWeather(id,city,day, temperature, min, max, humidity, description) {
  var dataObj = {
    id:id,
    city:city,
    day: day,
    temperature: temperature,
    min: min,
    max: max,
    temperature: temperature,
    humidity: humidity,
    description: description  };

  $.ajax({
    type: "POST",
    url: "BrabimBaskota_2331410_insert.php",
    data: dataObj,
    success: function(response) {
      console.log(response);
    },
    error: function(xhr, status, error) {
      console.log("Error: " + xhr.responseText);
    }
  });
}

/*------------------------------------------------*/

function displayWeather() {
  $.ajax({
    url: "BrabimBaskota_2331410_fetch.php", // replace with the URL of your API
    type: "GET",
    dataType: "json",
    success: function(data) {
      var table = "<table class='styled-table'><tr><th>Day</th><th>Temperature</th><th>Min</th><th>Max</th><th>Humidity</th><th>Description</th></tr>";
      $.each(data, function(index, element) {
        table +=  "</td><td>" + element.day + "</td><td>" + element.temp + "</td><td>" + element.min + "</td><td>" + element.max + "</td><td>" + element.humidity + "</td><td>" + element.description + "</td></tr>";
      });
      table += "</table>";
      $("#weatherHistory").html(table); // replace with the ID of the HTML element where you want to display the table
    },
    error: function(jqXHR, textStatus, errorThrown) {
      console.log("Error fetching weather data: " + textStatus + ", " + errorThrown);
    }
  });
}

/*--------------------------------------------------*/

const showWeatherData = (data) => {
// Loop through the items in the "list" array using a forEach loop

data.list.forEach((listItem, index) => {
  const city = cityToSearch;
  const date = new Date().toDateString();
  const condition = listItem.weather[0].description;
  const icon = `http://openweathermap.org/img/w/${listItem.weather[0].icon}.png`;
  const temperature = listItem.main.temp;
  const humidity = listItem.main.humidity;
  const windspeed = listItem.wind.speed;
  const rainfall = listItem.rain ? listItem.rain['1h'] : '0';
var dateFromUnix = new Date(listItem.dt * 1000);
var dayFromDate= dateFromUnix.getDay()+1;

  console.log(dayFromDate);

const storedData = {
  city,
  date,
  condition,
  icon,
  temperature,
  humidity,
  windspeed,
  rainfall
};
const existingDataString = localStorage.getItem('weatherData');
let existingData=[];
if (existingDataString) {
  existingData = JSON.parse(existingDataString);
}
if (!isDataAlreadyStored(city)) {
  // Add the new data to the existing data
  existingData.push(storedData);

  // Convert the updated data to a JSON string
  const updatedDataString = JSON.stringify(existingData);

  // Store the updated JSON string in local storage
  localStorage.setItem('weatherData', updatedDataString);
}

const daysMap = {
  1: "Sunday",
  2: "Monday",
  3: "Tuesday",
  4: "Wednesday",
  5: "Thursday",
  6: "Friday",
  7: "Saturday"
};
  //inserting to API
  insertWeather(dayFromDate,city,daysMap[dayFromDate],temperature,listItem.main.temp_min,listItem.main.temp_max,listItem.main.humidity,condition);
  weatherDiv.innerHTML = `<h2>${city} (${date})</h2> <div> <img src="${icon}" alt="${condition}"> <p>${condition}</p> </div> <div> <p>Temperature: ${temperature} °C</p> </div> <div><p> Humidity: ${humidity}%</p> </div><div> <p>Windspeed: ${windspeed}m/s</p> <p>Rainfall: ${rainfall}mm</p> </div>`;


});


/*-----------------------------------------------------------*/
//search bitton click

historyButton.addEventListener('click', async () => {
  if (weatherHistoryDiv.style.display === "none") {
    weatherHistoryDiv.style.display = "block";
    displayWeather()
  } else {
    weatherHistoryDiv.style.display = "none";
  }
});

// Show weather data for the assigned city on page load

/*---------------------------------------------------------*/
//search button onclick handler
searchButton.addEventListener('click', async () => {
  const city = searchInput.value;
//check in local storage before calling to api
if (isDataAlreadyStored(city)) {
  console.log("data found in local")
  fetchFromLocalStorage(city)
}
else {
  //call api
  console.log("data not found in local, calling api")

   const data = await getWeatherData(city);
  showWeatherData(data);
  cityToSearch=city;
  searchInput.value = '';
}
});
}
/*------------------------------------------------------*/

//run on init
if (isDataAlreadyStored(assignedCity)) {
  console.log("data already stored")
  fetchFromLocalStorage(assignedCity);
}
else {
  console.log("data not found in local")

getWeatherData(assignedCity).then((data) => showWeatherData(data));
}


/*-----------------------------------------------------*/


/*function to check city in local storage*/
function isDataAlreadyStored(city) {
  const existingDataString = localStorage.getItem('weatherData');
  if (existingDataString) {
    const existingData = JSON.parse(existingDataString);
    return existingData.some(item => item.city.toLowerCase() === city.toLowerCase());
  }
  return false;
}



/*-----------------------------------------------------------*/

/*fetch from local storage*/
function fetchFromLocalStorage(city){
// Retrieve the JSON string from local storage
const storedDataString = localStorage.getItem('weatherData');

// Convert the JSON string back to an array of objects
const storedData = JSON.parse(storedDataString);

// Specify the city for which you want to access the values
const targetCity =city;

// Find the data object for the target city
const targetData = storedData.find(item => item.city.toLowerCase() === targetCity.toLowerCase());

if (targetData) {
  // Access the individual values for the target city
  const city = targetData.city;
  const date = targetData.date;
  const condition = targetData.condition;
  const icon = targetData.icon;
  const temperature = targetData.temperature;
  const humidity = targetData.humidity;
  const windspeed = targetData.windspeed;
  const rainfall = targetData.rainfall;

  // Use the values as needed
  console.log(city, date, condition, icon, temperature, humidity, windspeed, rainfall);
  weatherDiv.innerHTML = `<h2>${city} (${date})</h2> <div> <img src="${icon}" alt="${condition}"> <p>${condition}</p> </div> <div> <p>Temperature: ${temperature} °C</p> </div> <div><p> Humidity: ${humidity}%</p> </div><div> <p>Windspeed: ${windspeed}m/s</p> <p>Rainfall: ${rainfall}mm</p> </div>`;

} else {
  // Handle the case when data for the target city is not found
  console.log(`Data not found for ${targetCity}`);
}
}