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kaengrur
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <meta charset="utf-8"> | |
| <head> | |
| </head> | |
| <body> | |
| <div id="output"><img id="image" width="100%" src="https://via.placeholder.com/800x250.png?text=:("/></div> | |
| </body> | |
| <script> | |
| const MILLIS_PER_DAY = 24*60*60*1000; | |
| const START_KEY = '2020-11-29'; | |
| const LAST_DATE = new Date('2023-03-06') | |
| const RES = (screen.width > screen.height) ? 'original' : 'original__mobile'; | |
| const BASE = 'https://img.zeit.de/administratives/kaenguru-comics'; | |
| let date; | |
| let key; | |
| let image = document.getElementById('image'); | |
| let direction = +1; | |
| if (location.href.indexOf('#') > -1) { | |
| let i = location.href.indexOf('#'); | |
| date = new Date(location.href.substring(i + 1)); | |
| if (isNaN(date)) date = new Date(START_KEY); | |
| } else { | |
| date = new Date(START_KEY); | |
| } | |
| date.setHours(12, 0, 0, 0); | |
| function f(i) { | |
| return (i < 10) ? '0' + i : i | |
| } | |
| function gen_url() { | |
| if (key >= '2021-01-19') return `${BASE}/${date.getFullYear()}-${f(date.getMonth() + 1)}/${f(date.getDate())}/${RES}`; | |
| if (key >= START_KEY) { | |
| if (key === '2021-01-09') return `${BASE}/kaenguru-038-2/${RES}`; | |
| if (key === '2020-12-19') return `${BASE.replace('k', '2020-12/k')}-kaenguru-019/${RES}`; | |
| let day_num = 1 + (new Date(key) - new Date(START_KEY)) / MILLIS_PER_DAY; | |
| if (day_num > 8 && (day_num - 1) % 7 === 0) return 'https://placehold.co/800x250.png?text=Kein%20Känguru+gefunden+für+' + key; | |
| let pic_num = day_num - Math.floor((day_num - 1) / 7); | |
| if (key > '2020-12-22') pic_num++; // glitch in the matrix | |
| if (key >= '2021-01-13' && key !== '2021-01-18') return `${BASE}/kaenguru-${pic_num}/${RES}`; | |
| if (pic_num > 4) return `${BASE}/kaenguru-0${f(pic_num)}/${RES}`; | |
| if (pic_num === 4) return `${BASE}/warnung-kaenguru/${RES}`; | |
| if (pic_num === 3) return `${BASE}/der-baum-kaenguru/${RES}`; | |
| if (pic_num === 2) return `${BASE}/pow-kaenguru/${RES}`; | |
| if (pic_num === 1) return `${BASE}/pilot-kaenguru/${RES}`; | |
| } | |
| location.href = location.href.replace(/#.*/,'') + '#' + START_KEY; | |
| } | |
| function change_image(e) { | |
| let x = e.clientX; | |
| let w = image.width; | |
| direction = (x < (w / 2)) ? -1 : 1; | |
| set_next_image(); | |
| } | |
| function set_next_image() { | |
| date.setTime(date.getTime() + direction * MILLIS_PER_DAY); | |
| if (date.getDay() === 0 && ! date.toISOString().startsWith(START_KEY)) { // skip sundays despite 2020-11-29 | |
| date.setTime(date.getTime() + direction * MILLIS_PER_DAY); | |
| } | |
| if (date.toISOString() < START_KEY) { | |
| date = new Date(LAST_DATE.toISOString().substring(0, 10)); | |
| } else if (date.getTime() > LAST_DATE.getTime() + MILLIS_PER_DAY) { | |
| date = new Date(START_KEY); | |
| } | |
| date.setHours(12, 0, 0, 0); | |
| set_image(true); | |
| } | |
| function set_image(push2history) { | |
| key = `${date.getFullYear()}-${f(date.getMonth() + 1)}-${f(date.getDate())}` | |
| image.src = gen_url(); | |
| // console.log(image.src); | |
| if (push2history) { | |
| history.pushState(key, key, location.href.replace(/#.*/,'') + '#' + key); | |
| } | |
| } | |
| function onerror() { | |
| console.error('error', key, image.src); | |
| image.src = 'https://placehold.co/800x250.png?text=Kein%20Känguru+gefunden+für+' + key; | |
| } | |
| window.onpopstate = (e) => { | |
| if (e.state) { | |
| date = new Date(e.state + " 12:00"); | |
| set_image(false); | |
| } | |
| }; | |
| image.onerror = onerror; | |
| image.onclick = change_image; | |
| set_image(false); | |
| </script> | |
| </html> |
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