// ==UserScript==
// @name        data extraction linkedin
// @namespace   Violentmonkey Scripts
// @match       https://www.linkedin.com/*
// @grant       GM_getValue
// @grant       GM_setValue
// @grant       GM_getValues
// @grant       GM_setValues
// @grant       GM_listValues
// @grant       GM_deleteValue
// @grant       GM_deleteValues
// @version     0.1
// @author      Siarhei Siniak
// @license Unlicense
// @description 10/08/2024, 8:44:59 PM

// @inject-into document
// @require https://cdn.jsdelivr.net/npm/@violentmonkey/dom@1
// @require https://cdn.jsdelivr.net/npm/jquery@3/dist/jquery.min.js
// @noframes
// ==/UserScript==

class Linkedin {
  constructor() {
    this.data = new Map();
    this.ui = {
      root: null,
    };
  }

  async data_load() {
    let self = this;
    const keys = await GM_listValues();
    let loaded = 0;
    for (let o of keys)
    {
      if (!o.startsWith('data-'))
      {
        return;
      }

      self.data.set(
        o.slice(5,),
        await GM_getValue(o)
      );
      loaded += 1;
    }

    console.log({action: 'loaded', total: loaded});
  }

  string_reduce (text) {
    return text.replaceAll(/\s+/gi, ' ').trim();
  }

  parse_header() {
    let self = this;

    return [
      $(
        '.scaffold-finite-scroll__content > div > .relative .update-components-header'
      ).map((i, o) => ({
        header: o.innerText
      })),
      $(
        '.scaffold-finite-scroll__content > div > .relative .update-components-actor'
      ).map((i, o) => {
          let header = $(o);
          let teaser = $(o).parents('.relative')
            .parent().find('.feed-shared-update-v2__description-wrapper');
          return {
            header: self.string_reduce(header.text()),
            teaser: self.string_reduce(teaser.text()),
          };
      })
    ] 
  }

  async data_add (entry) {
    let self = this;

    if (self.data.has(entry.header))
    {
      return;
    }

    self.data.set(entry.header, {
      entry: entry,
      ts: (new Date()).valueOf(),
    });

    await GM_setValue(
      'data-' + entry.header,
      self.data.get(entry.header)
    )

    console.log('saved ' + entry.header);

    console.log(self.data.get(entry.header));
  }

  async document_on_changed () {
    let self = this;
    let current_data = self.parse_header();

    for (let o of current_data[0])
    {
      await self.data_add(o);
    }

    for (let o of current_data[1])
    {
      await self.data_add(o);
    }

    self.display();
  }

  listener_add() {
    let self = this;

    return VM.observe(
      document.body,
      () => {
        self.document_on_changed();
      }
    );
  }

  display_init() {
    let self = this;

    self.ui.root = $(`<div class=online.fxreader.linkedin>`);

    $(document.body).append(self.ui.root);
  }

  display() {
    let self = this;

    let sorted_entries = Array.from(self.data.entries()).sort((a, b) => a[1].ts - b[1].ts);

    self.ui.root.empty();
    for (let o of sorted_entries.map(
      (o) => JSON.stringify(o[1])
    ))
    {
      self.ui.root.append($('<pre>').text(o));
    }
  }
}

const l = new Linkedin();

(async () => {
  await l.data_load();

  const disconnect = l.listener_add();
  l.display_init();
})();