// ==UserScript==
// @name        OpenStreetMap Deep History integration v.MM
// @namespace   Violentmonkey Scripts
// @match       https://www.openstreetmap.org/*
// @match       https://overpass-api.de/achavi/*
// @match       https://rene78.github.io/latest-changes/*
// @grant       none
// @version     1.1.2
// @description 2023-12-06, 13:28:50 (OSM, OpenStreetMaps)
// @license     GNU Affero General Public License v3.0
// @author      Marek-M
// @updateURL
// @downloadURL
// ==/UserScript==
(() => {
'use strict'
const pattern = /^https?:\/\/(www\.)?(osm\.org|openstreetmap\.org)\/(node|way|relation)\/(\d+)\/?(history|)$/g
// const pattern2 = /^(Zestaw zmian: )(\d+)$/g
const addHistoryButtons = linkElement => {
if (linkElement.getAttribute('data-history-button')) return
const matched = linkElement.href.match(pattern)
if (!matched) return
const [_, __, ___, type, id] = matched[0].split('/')
// historyLinksArray - each element should have 3 elements: [textContent, title, historyLink]
const textContent = 0, title = 1, historyLink = 2
const historyLinksArray =
[
['d', `Check in Osm Deep History - ${type} no. ${id}` , `https://osmlab.github.io/osm-deep-history/#/${type}/${id}`   ],
['p', `Check PEWU History Viewer - ${type} no. ${id}` , `https://pewu.github.io/osm-history/#/${type}/${id}`          ],
['m', `Check in Mapki (TAGS only) - ${type} no. ${id}`, `https://osm.mapki.com/history/${type}/${id}`                 ],
['v', `Check in Visual Viewer - ${type} no. ${id}`    , `https://aleung.github.io/osm-visual-history/#/${type}/${id}` ]
]
historyLinksArray.forEach
(
(historyLinkArrayElement) =>
{
const button = document.createElement('a')
button.textContent =  historyLinkArrayElement[textContent]
button.title =        historyLinkArrayElement[title]
button.href =         historyLinkArrayElement[historyLink]
button.alt = button.title
button.target = '_blank'
button.style.paddingLeft = '0.45ch'
button.style.paddingRight = '0.20ch'
button.style.position = 'relative'
button.style.top = '-0.5ch'
button.style.display = 'inline-block'
button.style.transform = 'scale(1.1)'
button.style.fontSize = '70%'
button.addEventListener('click', event => {event.stopPropagation()})
linkElement.insertAdjacentElement('beforeend', button)
}
) // forEach
linkElement.setAttribute('data-history-button', 'true')
}
const scanLinks = () => {
const links = document.querySelectorAll('a')
links.forEach(addHistoryButtons)
}
const observer = new MutationObserver(scanLinks)
observer.observe(document.body, {
childList: true,
subtree: true
})
scanLinks()
})()