require('dotenv').config();
const { google } = require('googleapis');

async function download(fileId) {
  const auth = new google.auth.GoogleAuth({
    scopes: ['https://www.googleapis.com/auth/drive.readonly'],
  });
  const drive = google.drive({ version: 'v3', auth });
  const htmlRes = await drive.files.export({
    fileId: fileId,
    mimeType: 'text/html'
  });
  return htmlRes.data;
}

async function main() {
  console.log(await download(process.argv.length > 2 ? process.argv[2] : process.env['DOC_ID']));
}

main();

(defvar my-google-doc-download-command
  (list "nodejs" (expand-file-name "~/bin/download-google-doc-html.cjs")))

(defun my-google-doc-html (doc-id)
  (when (string-match "https://docs\\.google\\.com/document/d/\\(.+?\\)/" doc-id)
    (setq doc-id (match-string 1 doc-id)))
  (with-temp-buffer
    (apply #'call-process (car my-google-doc-download-command)
           nil t nil (append (cdr my-google-doc-download-command) (list doc-id)))
    (buffer-string)))

(defun my-google-doc-clean-html (html)
  "Remove links on spaces, replace Google links."
  (let ((dom (with-temp-buffer
               (insert html)
               (libxml-parse-html-region))))
    (dom-search
     dom
     (lambda (o)
       (when (eq (dom-tag o) 'a)
         (when (and (dom-attr o 'href)
                    (string-match "https://\\(www\\.\\)?google\\.com/url\\?q=" (dom-attr o 'href)))
           (let* ((parsed (url-path-and-query
                           (url-generic-parse-url (dom-attr o 'href))))
                  (params (url-parse-query-string (cdr parsed))))
             (dom-set-attribute o 'href (car (assoc-default "q" params #'string=)))))
         (let ((text (string= (string-trim (dom-text o)) "")))
           (when (string= text "")
             (setf (car o) 'span))))
       (when (and
              (string-match "font-weight:700" (or (dom-attr o 'style) ""))
              (not (string-match "font-style:normal" (or (dom-attr o 'style) ""))))
         (setf (car o) 'strong))
       (when (dom-attr o 'style)
         (dom-remove-attribute o 'style))))
    ;; bold text is actually represented as font-weight:700 instead
    (with-temp-buffer
      (svg-print dom)
      (buffer-string))))

(defun my-google-doc-org (doc-id)
  "Return DOC-ID in Org Mode format."
  (pandoc-convert-stdio (my-google-doc-clean-html (my-google-doc-html doc-id)) "html" "org"))

(defun my-org-get-subtree-by-name (org-text heading-name)
  "Return ORG-TEXT subtree for HEADING-NAME."
  (with-temp-buffer
    (insert org-text)
    (org-mode)
    (goto-char (point-min))
    (let ((org-trust-scanner-tags t))
      (car (delq nil
                 (org-map-entries
                  (lambda ()
                    (when (string= (org-entry-get (point) "ITEM") heading-name)
                      (buffer-substring (point) (org-end-of-subtree))))))))))

(defvar my-lang-words-for-review-context-function 'sentence-at-point)
(defvar my-lang-tutor-notes-url nil)
(defun my-lang-tutor-notes (section-name)
  (my-org-get-subtree-by-name
   (my-google-doc-org my-lang-tutor-notes-url)
   section-name))

(defun my-lang-words-for-review (section)
  "List the bolded words for review in SECTION."
  (let* ((section (my-lang-tutor-notes section))
         results)
    (with-temp-buffer
      (insert section)
      (org-mode)
      (goto-char (point-min))
      (org-map-entries
       (lambda ()
         (org-end-of-meta-data t)
         (while (re-search-forward "\\*[^* ].*?\\*" nil t)
           (cl-pushnew
            (replace-regexp-in-string
             "[ \n ]+" " "
             (funcall my-lang-words-for-review-context-function))
            results
            :test 'string=)))))
    (nreverse results)))

(my-lang-words-for-review "Sur l'intelligence artificielle")

(defun my-split-string-keep-delimiters (string delimiter)
  (when string
    (let (results pos)
      (with-temp-buffer
        (insert string)
        (goto-char (point-min))
        (setq pos (point-min))
        (while (re-search-forward delimiter nil t)
          (push (buffer-substring pos (match-beginning 0)) results)
          (setq pos (match-beginning 0)))
        (push (buffer-substring pos (point-max)) results)
        (nreverse results)))))

(ert-deftest my-split-string-keep-delimiters ()
 (should
  (equal (my-split-string-keep-delimiters
          "Beaucoup de gens ont une réaction forte contre l'IA pour plusieurs raisons qui *incluent* le battage médiatique excessif dont elle fait l'objet, son utilisation à mauvais escient, et *l'inondation de banalité* qu'elle produit."
          ", \\| que \\| qui \\| qu'ils? \\| qu'elles? \\| qu'on "
          )
 )))

(defun my-lang-words-for-review-phrase-context (&optional s)
  (setq s (replace-regexp-in-string " " " " (or s (sentence-at-point))))
  (string-join
   (seq-filter (lambda (s) (string-match "\\*" s))
               (my-split-string-keep-delimiters s ", \\| parce que \\| que \\| qui \\| qu'ils? \\| qu'elles? \\| qu'on \\| pour "))
   " ... "))

(ert-deftest my-lang-words-for-review-phrase-context ()
  (should
   (equal (my-lang-words-for-review-phrase-context
           "Je peux consacrer une petite partie de mon *budget* à des essais, mais je ne veux pas travailler davantage pour rentabiliser une dépense plus importante.")
          "Je peux consacrer une petite partie de mon *budget* à des essais")))

(let ((my-lang-words-for-review-context-function 'my-lang-words-for-review-phrase-context))
  (my-lang-words-for-review "Sur l'intelligence artificielle"))

(defun my-lang-tutor-notes-wdiff-org ()
  (interactive)
  (let ((section (org-entry-get (point) "ITEM")))
    (my-wdiff-strings
     (replace-regexp-in-string
      " " " "
      (my-org-subtree-text-without-blocks))
     (replace-regexp-in-string
      " " " "
      (my-lang-tutor-notes section)))))

/* Start of copy code */
// based on https://www.roboleary.net/2022/01/13/copy-code-to-clipboard-blog.html
const copyLabel = 'Copy code';

async function copyCode(block, button) {
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  let text = code.innerText;
  await navigator.clipboard.writeText(text);
  button.innerText = 'Copied';
  setTimeout(() => {
    button.innerText = copyLabel;
  }, 500);
}

function addCopyCodeButtons() {
  if (!navigator.clipboard) return;
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  blocks.forEach((block) => {
    let button = document.createElement('button');
    button.innerText = copyLabel;
    button.classList.add('copy-code');
    let details = block.closest('details');
    let summary = details && details.querySelector('summary');
    if (summary) {
      summary.appendChild(button);
    } else {
      block.appendChild(button);
    }
    button.addEventListener('click', async() => {
      await copyCode(block, button);
    });
    block.setAttribute('tabindex', 0);
  });
}
document.addEventListener("DOMContentLoaded", function(event) { 
  addCopyCodeButtons();
});
/* End of copy code */

/* Start of copy code */
pre.src { margin: 0 }
.org-src-container {
    position: relative;
    margin: 0 0;
    padding: 1.75rem 0 1.75rem 1rem;
}
summary { position: relative; }
summary .org-src-container { padding: 0 }
summary .org-src-container pre.src { margin: 0 }
.org-src-container button.copy-code, summary button.copy-code {
    position: absolute;
    top: 0px;
    right: 0px;
}
/* End of copy code */