127 lines
4.8 KiB
HTML
127 lines
4.8 KiB
HTML
<!DOCTYPE html>
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<!--
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Copyright (c) 2023 Nikita Osokin.
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this list of
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conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of
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conditions and the following disclaimer in the documentation and/or other materials provided
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with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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-->
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<html>
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<head>
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<meta charset="utf-8" />
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</head>
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<body>
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<input type=date id="date" />
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<input type=button onclick="changeDay()" value="Получить расписание" />
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<p></p>
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<table id="schedule" border=1>
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<tbody>
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</tbody>
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</table>
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<script>
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const schedule = document.getElementById("schedule");
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function changeDay() {
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document.location.assign("?c=" + (new URLSearchParams(document.location.search)).get("c") + "&d=" + (document.getElementById("date").valueAsNumber / 86400000).toString());
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}
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function uint8ArrayToNum(arr, off) {
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let result = 0;
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for(var i = 0; i < 8; i++) {
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result <<= 8;
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result |= arr[off + i];
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}
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return result;
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}
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function displayGetError(e) {
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let p = document.createElement("p");
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p.appendChild(document.createTextNode("Не удалось получить расписание от сервера."));
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schedule.before(p);
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}
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function getSchedule() {
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fetch(
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"../scheduleGet" + document.location.search,
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{
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method: "GET"
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}
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).then(
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getData,
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displayGetError
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);
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}
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function getData(response) {
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if(response.status != 200) {
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displayGetError();
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return;
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}
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response.arrayBuffer().then(
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displayData,
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displayGetError
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);
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}
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function displayData(dataBuffer) {
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let data = new Uint8Array(dataBuffer);
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let lessonsCount = uint8ArrayToNum(data, 8);
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let textDecoder = new TextDecoder();
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let currentOff = 16;
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for(let i = 0; i < lessonsCount; i++) {
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let nRow = document.createElement("tr");
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let nCell1 = document.createElement("th");
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nCell1.appendChild(document.createTextNode(uint8ArrayToNum(data, currentOff) + 1));
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currentOff += 8;
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nRow.appendChild(nCell1);
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let len = uint8ArrayToNum(data, currentOff);
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currentOff += 8;
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let nCell2 = document.createElement("th");
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nCell2.appendChild(document.createTextNode(textDecoder.decode(data.slice(currentOff, currentOff + len))));
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currentOff += len;
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nRow.appendChild(nCell2);
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len = uint8ArrayToNum(data, currentOff);
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currentOff += 8;
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let nCell3 = document.createElement("th");
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nCell3.appendChild(document.createTextNode(textDecoder.decode(data.slice(currentOff, currentOff + len))));
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currentOff += len;
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nRow.appendChild(nCell3);
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schedule.children[0].appendChild(nRow);
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}
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}
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let day = (new URLSearchParams(document.location.search)).get("d");
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if(day != null) {
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document.getElementById("date").valueAsNumber = day * 86400000;
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}
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getSchedule();
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</script>
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</body>
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</html>
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