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search-districts.js
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search-districts.js
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var urlDist = "https://cdn-api.co-vin.in/api/v2/admin/location/";
var statesSelect = document.getElementById("states");
var districtSelect = document.getElementById("districts");
var container = document.getElementById("pageContainer");
var entriesPerPage = 15;
var default_method = true; // true indicates search by pin;
var method_buttons = document.getElementsByClassName("method_buttons");
var getJSONDist = function (urlDist, callback) {
var xhr = new XMLHttpRequest();
xhr.open("GET", urlDist, true);
xhr.responseType = "json";
xhr.onload = function () {
if (xhr.status === 200) callback(null, xhr.response);
else callback(xhr.status, xhr.reponse);
};
xhr.send();
};
function pinMethod() {
if (!default_method) {
// if district search is enabled
toggleMethod();
default_method = true;
method_buttons[0].style.borderBottomColor = "#7d0cda";
method_buttons[0].style.color = "#7d0cda";
method_buttons[1].style.borderBottomColor = "transparent";
method_buttons[1].style.color = "black";
}
}
function districtMethod() {
if (default_method) {
toggleMethod();
default_method = false;
method_buttons[1].style.borderBottomColor = "#7d0cda";
method_buttons[1].style.color = "#7d0cda";
method_buttons[0].style.borderBottomColor = "transparent";
method_buttons[0].style.color = "black";
}
}
function toggleMethod() {
container.innerHTML = "";
let pinElements = document.getElementsByClassName("searchByPin");
for (let i = 0; i < pinElements.length; i++) {
toggleDisplay(pinElements[i]);
}
let distElements = document.getElementsByClassName("searchByDistrict");
for (let i = 0; i < distElements.length; i++) {
toggleDisplay(distElements[i]);
}
// if the searchByDistrict elements are visible only then
// fetch the district data
if (distElements[0].style.display !== "none")
getJSONDist(urlDist + "states", function (err, data) {
if (err !== null) console.log("something went wrong" + err);
else {
// console.log(data);
// console.log(data.states.length);
listStates(data);
}
});
}
// populate the states
function listStates(data) {
for (let i = 0; i < data.states.length; i++) {
let option = document.createElement("option");
option.innerHTML = data.states[i].state_name;
option.value = data.states[i].state_id;
statesSelect.add(option);
if (data.states[i].state_name == "Tripura") option.selected = true;
// populate the states div container once the data arrives
}
// 33 corresponds to tripura
customSelect(0, 33);
// populate the districts of the selected state
let state_id = statesSelect.options[statesSelect.selectedIndex].value;
getJSONDist(urlDist + "districts/" + state_id, function (err, data) {
if (err != null) console.log("Something went wrong" + err);
else {
// console.log(data);
// console.log(data.districts.length);
listDistricts(data);
}
});
}
function listDistricts(data) {
districtSelect.innerHTML = "";
let preSelected = 0;
for (let i = 0; i < data.districts.length; i++) {
let option = document.createElement("option");
option.innerHTML = data.districts[i].district_name;
option.value = data.districts[i].district_id;
districtSelect.add(option);
if (data.districts[i].district_name == "West Tripura") {
option.selected = true;
preSelected = 7;
}
}
// populate the district div container once the data arrives
// 7 corresponds to west tripura
customSelect(1, preSelected);
}
function loadDistricts() {
let state_id = statesSelect.options[statesSelect.selectedIndex].value;
getJSONDist(urlDist + "districts/" + state_id, function (err, data) {
if (err != null) {
console.log("something went wrong" + err);
} else {
// console.log(data);
// console.log(data.districts.length);
listDistricts(data);
}
});
}
function toggleDisplay(element) {
if (element.style.display == "none" || null)
element.style.display = "inline-block";
else element.style.display = "none";
}
function getCenters() {
let district_id = districtSelect.options[districtSelect.selectedIndex].value;
let dateStringDist = new Date(document.getElementById("date-input").value)
.toLocaleDateString("en-IN", {
day: "2-digit",
month: "2-digit",
year: "numeric",
})
.replaceAll("/", "-");
let urlDist =
"https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/findByDistrict?district_id=" +
district_id +
"&date=" +
dateStringDist;
let numEntries = 0;
getJSONDist(urlDist, function (err, data) {
if (err != null) console.log("something went wrong" + err);
else {
// console.log(data);
// console.log(data.sessions.length);
let op = document.getElementById("form");
let age = op.elements.age.value;
let dose = op.elements.dose.value;
numEntries = availableCenters(data, age, dose);
// console.log(numEntries);
createPages(numEntries);
fillPages(data, age, dose, numEntries);
if (numEntries > 0) {
let btn = document.createElement("button");
btn.innerHTML = "<";
btn.addEventListener("click", previousPage);
container.appendChild(btn);
btn = document.createElement("button");
btn.innerHTML = ">";
btn.addEventListener("click", nextPage);
container.appendChild(btn);
} else {
container.innerHTML +=
"<br><br><h3>No vaccination center available</h3>";
}
}
});
}
function createPages(numEntries) {
clearPages();
let input = document.createElement("input");
input.setAttribute("type", "text");
input.setAttribute("id", "pageIndex");
input.setAttribute("onchange", "showSpecificPage()");
input.style.float = "right";
input.style.width = "6rem";
input.style.marginRight = "3vw";
let numPages = Math.ceil(numEntries / entriesPerPage);
if (numPages > 0) input.placeholder = "1 to " + numPages.toString();
else input.placeholder = "NA";
container.innerHTML = "";
container.appendChild(input);
for (let i = 1; i <= numPages; i++) {
let div = document.createElement("div");
div.innerHTML = "<br><br><h2>Page " + i.toString() + "</h2>";
div.setAttribute("class", "page");
div.classList.add("page");
div.classList.add("searchByDistrict");
div.style.display = "none";
container.appendChild(div);
}
if (numPages > 0)
document.getElementsByClassName("page")[0].style.display = "block";
}
function clearPages() {
let input = document.getElementById("pageIndex");
if (input != null) input.remove();
let divs = document.getElementsByClassName("page");
let numPages = divs.length;
for (let i = numPages - 1; i >= 0; i--) {
divs[i].remove(); // removed backward as remove constantly
// updates index of nodelist
}
}
function fillPages(data, age, dose, numEntries) {
let divs = document.getElementsByClassName("page");
let numPages = divs.length;
let numCenters = data.sessions.length;
let slno = 0;
let numRows = 0;
let pageNo = 0;
while (numRows < numEntries) {
// when moving the next page
if (Math.floor(numRows / entriesPerPage) + 1 > pageNo) {
pageNo = Math.floor(numRows / entriesPerPage) + 1;
createTable(divs, pageNo);
}
if (
dose == 1 &&
data.sessions[slno].available_capacity_dose1 > 0 &&
data.sessions[slno].min_age_limit == age
) {
addRow(dose, data, slno, pageNo);
numRows++;
} else if (
dose == 2 &&
data.sessions[slno].available_capacity_dose2 > 0 &&
data.sessions[slno].min_age_limit == age
) {
addRow(dose, data, slno, pageNo);
numRows++;
}
slno++;
}
}
function showSpecificPage() {
let input = document.getElementById("pageIndex");
let divs = document.getElementsByClassName("page");
if (input.value < 1 || input.value == "") pageNo = 1;
else if (input.value > divs.length) pageNo = divs.length;
else pageNo = input.value;
for (let i = 0; i < divs.length; i++) {
if (divs[i].style.display == "block") divs[i].style.display = "none";
}
divs[pageNo - 1].style.display = "block";
}
function previousPage() {
let divs = document.getElementsByClassName("page");
let numPages = divs.length;
let prevIndex;
for (let i = 0; i < numPages; i++)
if (divs[i].style.display == "block") {
divs[i].style.display = "none";
prevIndex = (i + numPages - 1) % numPages;
break;
}
divs[prevIndex].style.display = "block";
}
function nextPage() {
let divs = document.getElementsByClassName("page");
let numPages = divs.length;
let nextIndex;
for (let i = 0; i < numPages; i++)
if (divs[i].style.display == "block") {
divs[i].style.display = "none";
nextIndex = (i + 1) % numPages;
break;
}
divs[nextIndex].style.display = "block";
}
function createTable(divs, pageNo) {
var tbl = document.createElement("table");
tbl.setAttribute("id", "table_info" + pageNo.toString());
tbl.classList.add("tablePerPage");
var thd = tbl.createTHead();
var hrow = thd.insertRow(0);
var hcell0 = hrow.insertCell(0);
var hcell1 = hrow.insertCell(1);
var hcell2 = hrow.insertCell(2);
var hcell3 = hrow.insertCell(3);
var hcell4 = hrow.insertCell(4);
hcell0.innerHTML = "<b>Available Capacity</b>";
hcell1.innerHTML = "<b>Date</b>";
hcell2.innerHTML = "<b>Center</b>";
hcell3.innerHTML = "<b>Address</b>";
hcell4.innerHTML = "<b>Block name</b>";
tbl.createTBody();
tbl.setAttribute("cellspacing", "5");
divs[pageNo - 1].appendChild(tbl);
}
function addRow(dose, data, slno, pageNo) {
var tbl = document.getElementById("table_info" + pageNo.toString());
var tbody = tbl.tBodies[0];
var trow = tbody.insertRow(-1);
var cell0 = trow.insertCell(0);
var cell1 = trow.insertCell(1);
var cell2 = trow.insertCell(2);
var cell3 = trow.insertCell(3);
var cell4 = trow.insertCell(4);
if (dose == 1) cell0.innerHTML = data.sessions[slno].available_capacity_dose1;
if (dose == 2) cell0.innerHTML = data.sessions[slno].available_capacity_dose2;
cell0.innerHTML += " " + data.sessions[slno].vaccine;
if (data.sessions[slno].fee_type == "Paid")
cell0.innerHTML += " (Rs." + data.sessions[slno].fee + ")";
cell1.innerHTML = data.sessions[slno].date;
cell2.innerHTML = data.sessions[slno].name;
cell3.innerHTML = data.sessions[slno].address;
cell4.innerHTML = data.sessions[slno].block_name;
}
function availableCenters(data, age, dose) {
let activeCenters = 0;
for (let i = 0; i < data.sessions.length; i++) {
if (
dose == 1 &&
data.sessions[i].available_capacity_dose1 > 0 &&
data.sessions[i].min_age_limit == age
) {
activeCenters++;
} else if (
dose == 2 &&
data.sessions[i].available_capacity_dose2 > 0 &&
data.sessions[i].min_age_limit == age
) {
activeCenters++;
}
}
return activeCenters;
}
// this version of customSelect will take the index of
// div container of select to populate
// preSelected elements will be shaded
function customSelect(ii, preSelected) {
var container = document.getElementsByClassName("custom-select");
if (container[ii].getElementsByClassName("select-selected").length > 0)
container[ii].getElementsByClassName("select-selected")[0].remove();
if (container[ii].getElementsByClassName("select-items").length > 0)
container[ii].getElementsByClassName("select-items")[0].remove();
// console.log(container[ii]);
var selectElement = container[ii].getElementsByTagName("select")[0];
var numOptions = selectElement.length;
// console.log(selectElement.selectedIndex);
// create the selected div element
var selectedSelect = document.createElement("div");
selectedSelect.setAttribute("class", "select-selected");
selectedSelect.innerHTML =
selectElement.options[selectElement.selectedIndex].innerHTML;
container[ii].appendChild(selectedSelect);
var selectItems = document.createElement("div");
selectItems.setAttribute("class", "select-items select-hide");
var option;
// create the option list using divs
for (let i = 0; i < numOptions; i++) {
option = document.createElement("div");
option.innerHTML = selectElement.options[i].innerHTML;
option.addEventListener("click", function (event) {
event.stopPropagation();
let selectEle =
this.parentNode.parentNode.getElementsByTagName("select")[0];
let OptionsCount = selectEle.length;
let selectedDiv = this.parentNode.previousSibling;
for (let j = 0; j < OptionsCount; j++) {
if (selectEle.options[j].innerHTML == this.innerHTML) {
selectEle.selectedIndex = j;
if (selectEle.onchange)
selectEle.onchange(); // now onchage function is mannually called from here
selectedDiv.innerHTML = this.innerHTML;
let selectedInDiv =
this.parentNode.getElementsByClassName("same-as-selected");
for (let k = 0; k < selectedInDiv.length; k++)
selectedInDiv[k].removeAttribute("class");
this.setAttribute("class", "same-as-selected");
break;
}
}
selectedDiv.click();
});
selectItems.appendChild(option);
}
container[ii].appendChild(selectItems);
selectedSelect.addEventListener("click", function (event) {
event.stopPropagation();
this.nextSibling.classList.toggle("select-hide");
this.classList.toggle("select-arrow-active");
});
if (preSelected !== undefined)
selectItems.childNodes[preSelected]
.setAttribute("class", "same-as-selected");
let distDiv = container[1].getElementsByClassName("select-items")[0];
if (distDiv && distDiv.children.length < 14) distDiv.style.height = "auto";
let stateDiv = container[0].getElementsByClassName("select-items")[0];
if (stateDiv)
stateDiv.style.zIndex = "110";
}