Add "estimated reading time" per article in header

[novoid]

• Find out how to implement a feature that estimates the reading time (according to number of words?)

  • https://medium.com/better-programming/how-to-estimate-any-articles-read-time-2a8403f0bd79
    • 200 WPM + Python code at https://github.com/assafelovic/reading_time_estimator
  • https://help.medium.com/hc/en-us/articles/214991667-Read-time
    • "Read time is based on the average reading speed of an adult (roughly 265 WPM). We take the total word count of a post and translate it into minutes, with an adjustment made for images. For posts in Chinese, Japanese and Korean, it's a function of number of characters (500 characters/min) with an adjustment made for images."
  • https://lifehacker.com/calculate-the-reading-time-for-any-book-1835121105
    • 250 WPM

• Implement feature and add it to lazyblorg output

  • Potential approach:
    1. Count characters or words of Org mode original (excluding comments and noexport headings) because it still lacks HTML clutter.
    2. If character-count: divide by average 5 characters per word to determine WPM.

[novoid]

Internal notes for implementation:

• resources

  • entry['rawcontent'] is the raw content of the article
  • determine language for adapting snippet: entry['autotags']['language']
    • unsure
    • from lib/tests/utils_test.py: deutsch, english

• algorithm

  • derive number of words from rawcontent -> entry['reading_minutes']
  • remove header + property + non-words (rough estimation!)
  • set up new template for the two default languages

• adjustments necessary in:

  • CSS: similar to "published on"
  • _generate_tag_page()
  • _generate_persistent_article()
  • _generate_temporal_article()
  • end to end tests: re-generate, manually check result, take over result for comparison data set
  • entry page previews

• round up

  • document in wiki: approach, sources, this issue, chosen WPM number, subtraction number
  • maybe: link from template to the wiki page with explanations

---

MISC temporary notes:

            # FIXXME: other languages than german have to be added
            # here: (generalize using a configured list of known
            # languages?)
            if 'autotags' in list(entry.keys()):
                if 'language' in list(entry['autotags'].keys()) and entry['autotags']['language'] == 'deutsch':
                    content += self.template_definition_by_name('backreference-header-de')
                else:
                    content += self.template_definition_by_name('backreference-header-en')