/*
content script running on youtube.com
*/
let browserType = getBrowser();
// boilerplate to dedect browser type api
function getBrowser() {
if (typeof chrome !== "undefined") {
if (typeof browser !== "undefined") {
console.log("detected firefox");
return browser;
} else {
console.log("detected chrome");
return chrome;
}
} else {
console.log("failed to dedect browser");
throw "browser detection error"
};
}
const downloadIcon = ``;
const checkmarkIcon = ``
function buildButtonDiv() {
var buttonDiv = document.createElement("div");
buttonDiv.setAttribute("id", "ta-channel-button");
Object.assign(buttonDiv.style, {
display: "flex",
alignItems: "center",
backgroundColor: "#00202f",
color: "#fff",
fontSize: "1.7rem",
padding: "5px",
margin: "0 5px",
borderRadius: "8px",
});
return buttonDiv
}
function buildSubLink(channelContainer) {
var subLink = document.createElement("span");
var currentLocation = window.location;
subLink.innerText = "Subscribe";
subLink.addEventListener('click', e => {
e.preventDefault();
console.log("subscribe to: " + currentLocation);
sendUrl(currentLocation, "subscribe");
});
subLink.addEventListener("mouseover", e => {
let subText
if (window.location.pathname == "/watch") {
subText = window.location.href;
} else {
subText = channelContainer.querySelector("#text").textContent;
};
e.target.title = "TA Subscribe: " + subText;
});
Object.assign(subLink.style, {
padding: "5px 10px",
cursor: "pointer",
});
return subLink
}
function buildSpacer() {
var spacer = document.createElement("span");
spacer.innerText = "|";
return spacer
}
function buildDlLink(channelContainer) {
var dlLink = document.createElement("span");
var currentLocation = window.location;
dlLink.innerHTML = downloadIcon;
dlLink.addEventListener('click', e => {
e.preventDefault();
console.log("download: " + currentLocation)
sendUrl(currentLocation, "download");
});
dlLink.addEventListener("mouseover", e => {
let subText
if (window.location.pathname == "/watch") {
subText = window.location.href;
} else {
subText = channelContainer.querySelector("#text").textContent;
};
e.target.title = "TA Download: " + subText;
});
Object.assign(dlLink.style, {
filter: "invert()",
width: "20px",
padding: "0 10px",
cursor: "pointer",
});
return dlLink
}
function buildChannelButton(channelContainer) {
var buttonDiv = buildButtonDiv()
var subLink = buildSubLink(channelContainer);
buttonDiv.appendChild(subLink)
var spacer = buildSpacer()
buttonDiv.appendChild(spacer);
var dlLink = buildDlLink(channelContainer)
buttonDiv.appendChild(dlLink);
return buttonDiv
}
function getChannelContainers() {
var nodes = document.querySelectorAll("#inner-header-container, #owner");
return nodes
}
function getThubnailContainers() {
var nodes = document.querySelectorAll('#thumbnail');
return nodes
}
function buildVideoButton(thumbContainer) {
var thumbLink = thumbContainer?.href;
if (!thumbLink) return;
if (thumbLink.includes('list=') || thumbLink.includes('/shorts/')) return;
var dlButton = document.createElement("a");
dlButton.setAttribute("id", "ta-video-button");
dlButton.href = '#'
dlButton.addEventListener('click', e => {
e.preventDefault();
let videoLink = thumbContainer.href;
console.log("download: " + videoLink);
sendUrl(videoLink, "download");
});
dlButton.addEventListener('mouseover', e => {
Object.assign(dlButton.style, {
opacity: 1,
});
let videoTitle = thumbContainer.href;
e.target.title = "TA download: " + videoTitle;
})
dlButton.addEventListener('mouseout', e => {
Object.assign(dlButton.style, {
opacity: 0,
});
})
Object.assign(dlButton.style, {
display: "flex",
position: "absolute",
top: "5px",
left: "5px",
alignItems: "center",
backgroundColor: "#00202f",
color: "#fff",
fontSize: "1.4rem",
textDecoration: "none",
borderRadius: "8px",
cursor: "pointer",
opacity: 0,
transition: "all 0.3s ease 0.3s",
});
var dlIcon = document.createElement("span");
dlIcon.innerHTML = downloadIcon;
Object.assign(dlIcon.style, {
filter: "invert()",
width: "20px",
padding: "10px 13px",
});
dlButton.appendChild(dlIcon);
return dlButton
}
function ensureTALinks() {
var channelContainerNodes = getChannelContainers()
for (var channelContainer of channelContainerNodes) {
if (channelContainer.hasTA) continue;
var channelButton = buildChannelButton(channelContainer);
channelContainer.appendChild(channelButton);
channelContainer.hasTA = true;
}
var thumbContainerNodes = getThubnailContainers();
for (var thumbContainer of thumbContainerNodes) {
if (thumbContainer.hasTA) continue;
var videoButton = buildVideoButton(thumbContainer);
if (videoButton == null) continue;
thumbContainer.parentElement.appendChild(videoButton);
thumbContainer.hasTA = true;
}
}
function sendUrl(url, action) {
let payload = {
"youtube": {
"url": url,
"action": action,
}
}
console.log("youtube link: " + JSON.stringify(payload));
browserType.runtime.sendMessage(payload, function(response) {
console.log("sendUrl response: " + JSON.stringify(response))
});
};
let observer = new MutationObserver(list => {
if (list.some(i => i.type === 'childList' && i.addedNodes.length > 0)) {
console.log("observer hit")
ensureTALinks();
}
});
observer.observe(document.body, { attributes: false, childList: true, subtree: true });