deathau.weblog.lol/weblog/B0. Template/fediverse.js.md

/*/ Type: file Content-Type: application/javascript Title: Fediverse script Location: /fediverse.js /**/

const SUBSCRIBE_LINK_REL = 'http://ostatus.org/schema/1.0/subscribe' const AVATAR_LINK_REL = 'http://webfinger.net/rel/avatar'

class FediSocial extends HTMLElement { constructor() { // Always call super first in constructor super(); }

connectedCallback() { const data = JSON.parse(localStorage.getItem('fedi-social') || '{}')

let img;
if(data.avatar) {
  img = document.createElement('img')
  img.src = data.avatar || "https://upload.wikimedia.org/wikipedia/commons/9/93/Fediverse_logo_proposal.svg"
}
else {
  img = document.createElement('i')
  img.classList.add('omg-icon', 'omg-fediverse')
}

const summary = document.createElement('summary')
summary.appendChild(img)

const details = document.createElement('details')
details.appendChild(summary)

// popup
const div = document.createElement('div')
div.classList.add('card', 'popover')

if(data.id) {
  //logout
  const p = document.createElement('p')
  p.innerHTML = `Hey again, ${data.name} 👋`
  div.appendChild(p)

  const button = document.createElement('button')
  button.innerText = "Forget me"
  button.addEventListener('click', ev => { localStorage.clear(); window.location.reload() })
  div.appendChild(button)

}
else {
  const p = document.createElement('p')
  p.innerHTML = "Hey 👋, <br />please enter your fediverse / mastodon handle below. "

  const form = document.createElement('form')
  form.addEventListener('submit', this.login)

  const input = document.createElement('input')
  input.type = 'text'
  input.name = 'handle'
  input.placeholder = '@user@domain.social'
  form.appendChild(input)

  const button = document.createElement('input')
  button.type = 'submit'
  button.value = 'Submit'
  form.appendChild(button)
  
  div.appendChild(p)
  div.appendChild(form)
}

details.appendChild(div)
this.appendChild(details)

}

login(ev) { ev.preventDefault() const input = this.elements['handle'].value let handle = input.trim().replace(/^@/,'') const split = handle.split('@') if(split.length == 2) { const resource = acct:${handle} const domain = split[1]

  // look up remote user via webfinger
  const url = `https://${domain}/.well-known/webfinger?resource=${resource}`
  return fetch(url, {headers: {
    'Accept': 'application/json'
  }}).then(async result => {
    const json = await result.json()
    console.log(json)
    
    const template = json.links.find(link => link.rel && link.rel == SUBSCRIBE_LINK_REL)?.template
    const avatar = json.links.find(link => link.rel && link.rel == AVATAR_LINK_REL)?.href
    const id = json.links.find(link => link.rel && link.rel == "self" && link.type == "application/activity+json")?.href

    const data = { id, template, avatar, name: input }
    localStorage.setItem('fedi-social', JSON.stringify(data))
    window.location.reload()
  })
  .catch(e => {
    console.error(e)
    this.parentElement.querySelector('p').innerHTML = `Sorry, we couldn't find details for ${input}.\n\nTo interact with posts, try searching for their url on ${domain} (or in your fediverse client of choice)`
    return null
  })
}
else {
  this.parentElement.querySelector('p').innerHTML = `Please enter your fediverse address in @user@domain.social format`
}

}

clicked(ev) { ev.preventDefault() console.log("Ow! You clicked me!") } }

customElements.define('fedi-social', FediSocial)

function fediverse() { const data = JSON.parse(localStorage.getItem('fedi-social') || '{}') document.querySelectorAll("a.external_url:not([href='{external_url}'])").forEach(el => { if(data.template){ href = template.replace("{uri}", el.href) const innerHTML = <a href='${href}' target="_blank"><i class="fa fa-comment"></i></a> <a href='${href}' target="_blank"><i class="fa fa-star"></i></a> <a href='${href}' target="_blank"><i class="fa fa-retweet"></i></a>

		const span = document.createElement('span')
		span.classList.add('fediverse')
		span.innerHTML = innerHTML

		el.insertAdjacentElement('afterend', span)
		el.remove()
	}
	else {
		el.addEventListener('click', ev =>{
			ev.preventDefault()
			window.scrollTo({ top: 0, behavior: 'smooth' })
			document.querySelector('fedi-social summary').click()
		})
	}
})

}