2023-11-09 18:25:04 +00:00
<!DOCTYPE html>
2023-11-09 18:11:16 +00:00
<!--
Copyright (c) 2023 Nikita Osokin.
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provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of
conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of
conditions and the following disclaimer in the documentation and/or other materials provided
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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POSSIBILITY OF SUCH DAMAGE.
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< html >
< head >
< meta charset = "utf-8" / >
< / head >
< body >
< input type = "date" id = "date" / >
< p > < p / >
< table id = "schedule" border = 1 >
< tbody >
< tr class = "schedRow" >
< td >
1.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
2.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
3.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
4.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
5.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
6.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< tr class = "schedRow" >
< td >
7.
< / td >
< td >
< input type = "checkbox" checked / >
< / td >
< td >
< input type = "text" / >
< / td >
< td >
< input type = "text" / >
< / td >
< / tr >
< / tbody >
< / table >
< p > < / p >
< input id = "password" type = "password" placeholder = "Пароль" / >
< input id = "send" type = "button" onclick = "sendEdits()" value = "Отправить изменения" / >
< script >
function numToUint8Array(num, arr, off) {
for(var i = 0; i < 8 ; i + + ) {
arr[off + 7 - i] = num % 0x100;
num >>= 8;
}
}
function displayStatus(response) {
let sendButton = document.getElementById("send");
let statusText;
if(response.status == 200) {
statusText = document.createTextNode(" Расписание успешно изменено.");
} else if(response.status == 400) {
statusText = document.createTextNode(" Ошибка при изменении расписания: неправильный формат данных.");
} else if(response.status == 401) {
statusText = document.createTextNode(" Неверный пароль.");
} else if(response.status == 500) {
statusText = document.createTextNode(" Ошибка при изменении расписания: внутренняя ошибка сервера. Попробуйте отправить изменения ещё раз прямо сейчас или чуть позже.");
}
sendButton.after(statusText);
}
function displayNetError(e) {
let sendButton = document.getElementById("send");
let statusText = document.createTextNode(" Сетевая ошибка при отправке изменений. Возможно, вам стоит проверить своё интернет-соединение или подождать, а
sendButton.after(statusText);
}
function sendEdits() {
const schedule = document.getElementById("schedule");
let lessonsCount = 0;
let indices = [];
let names = [];
let namesLens = [];
let descs = [];
let descsLens = [];
let index = 0;
let textEncoder = new TextEncoder();
let password = textEncoder.encode(document.getElementById("password").value);
let bufferSize = 24 + password.length;
for(const row of schedule.children[0].children) {
if(row.children[1].children[0].checked) {
lessonsCount++;
indices.push(index);
let name = textEncoder.encode(row.children[2].children[0].value);
names.push(name);
namesLens.push(name.length);
let desc = textEncoder.encode(row.children[3].children[0].value);
descs.push(desc);
descsLens.push(desc.length);
bufferSize += 24 + name.length + desc.length;
}
index++;
}
let data = new Uint8Array(new ArrayBuffer(bufferSize));
numToUint8Array(password.length, data, 0);
for(let i = 0; i < password.length ; i + + ) {
data[8 + i] = password[i];
}
let currentOff = 16 + password.length;
numToUint8Array(lessonsCount, data, currentOff);
currentOff += 8;
for(let i = 0; i < lessonsCount ; i + + ) {
numToUint8Array(indices[i], data, currentOff);
currentOff += 8;
numToUint8Array(namesLens[i], data, currentOff);
currentOff += 8;
for(let j = 0; j < namesLens [ i ] ; j + + ) {
data[currentOff + j] = names[i][j];
}
currentOff += namesLens[i];
numToUint8Array(descsLens[i], data, currentOff);
currentOff += 8;
for(let j = 0; j < descsLens [ i ] ; j + + ) {
data[currentOff + j] = descs[i][j];
}
currentOff += descsLens[i];
}
let params = "?c=" + (new URLSearchParams(document.location.search)).get("c")
let day = document.getElementById("date").valueAsNumber;
if(day != NaN) {
params += "& d=" + (day / 86400000).toString();
}
fetch(
params,
{
method: "POST",
body: data
}
).then(
displayStatus,
displayNetError
);
}
< / script >
< / body >
< / html >
