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;;; gnosis.el --- Learning tool for GNU Emacs -*- lexical-binding: t; -*-
;; Copyright (C) 2023 Thanos Apollo
;; Author: Thanos Apollo <[email protected]>
;; Keywords: extensions
;; URL: https://git.thanosapollo.org/gnosis
;; Version: 0.0.1
;; Package-Requires: ((emacs "27.2") (compat "29.1.4.2"))
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Work in progress
;;; Code:
;; TODO: Create cloze question type & make it easily extensible for
;; other types
(require 'emacsql)
(require 'cl-lib)
(require 'animate)
(defvar gnosis-db (emacsql-sqlite (concat user-emacs-directory "gnosis.db")))
(cl-defun gnosis--select (table values &optional (restrictions '1=1))
"Select VALUES from TABLE, optionally with RESTRICTIONS."
(emacsql gnosis-db `[:select ,values :from ,table :where ,restrictions]))
(cl-defun gnosis--create-table (table-name &optional values)
"Create TABLE-NAME for VALUES."
(emacsql gnosis-db `[:create-table ,table-name ,values]))
(cl-defun gnosis--insert-into (table-name values)
"Insert VALUES to TABLE-NAME."
(emacsql gnosis-db `[:insert :into ,table-name :values ,values]))
(defun gnosis--get-question (id)
"Get question row for question ID."
(caar (gnosis--select 'notes 'question `(= question_id ,id))))
(defun gnosis--get-correct-answer (id)
"Get correct answer for question ID."
(caar (gnosis--select 'notes 'answer `(= question_id ,id))))
(defun gnosis--get-mcanswers (id)
"Get multiple choices for question ID."
(caar (gnosis--select 'notes 'choices `(= question_id ,id))))
(defun gnosis--display-question (id)
"Display question for question ID."
(let ((question (gnosis--get-question id)))
;; Animate.el is used only for testing purposes.
(animate-string question 5)))
(defun gnosis--mcanswers-choice (id)
"Display multiple choice answers for question ID."
(let ((mcanswers (gnosis--get-mcanswers id)))
(completing-read "Answer: " mcanswers)))
(defun gnosis--input-mcanswers ()
"Prompt user for multiple choice answers."
(let ((mcqs nil))
(while (not (equal (car mcqs) "q"))
(add-to-list 'mcqs (read-string "Choices (q for quit): ")))
(when (equal (car mcqs) "q")
(pop mcqs))
(reverse mcqs)))
(cl-defun gnosis-create-mcq-question (&key question choices correct-answer)
"Create a QUESTION with a list of multiple CHOICES and one CORRECT-ANSWER.
This function can be used interactively, or if you prefer you may also
use it like this:
(gnosis-create-mcq-question
:question \"Which one is the greatest editor?\"
:choices (list \"Emacs\" \"Vim\" \"VSCode\" \"Ed\")
:correct-answer 1)"
(interactive
(list :question (read-string "Question: ")
:choices (gnosis--input-mcanswers)
:correct-answer (string-to-number (read-string "Which is the correct answer? "))))
(gnosis--insert-into 'notes `([nil "mcq" ,question ,choices ,correct-answer 0 0])))
(defun gnosis-create-question (type)
"Create question as TYPE."
(interactive (list (completing-read "Type: " '(MCQ Cloze Basic))))
(pcase type
("MCQ" (call-interactively 'gnosis-create-mcq-question))
("Cloze" (message "Not ready yet."))
("Basic" (message "Not ready yet."))
(_ (message "No such type."))))
;; Fix: review for seperate question types.
(defun gnosis-review (id)
"Start review for question ID."
(let ((canswer (gnosis--get-correct-answer id))
(choices (gnosis--get-mcanswers id))
(user-choice (gnosis--mcanswers-choice id)))
(if (equal (nth (- canswer 1) choices) user-choice)
(message "Correct!")
(message "False"))))
;; testing
(defun gnosis-test-buffer ()
"Create testing buffer."
(interactive)
(with-current-buffer
(switch-to-buffer (get-buffer-create "*gnosis*"))
(setq-local minibuffer-history nil)
(gnosis--display-question 1)
(gnosis-review 1)
(gnosis-mode)))
(defun gnosis-init ()
"Create notes content table."
(gnosis--create-table 'notes '([(question_id integer :primary-key)
type
question
choices
answer
rev_log
rev_score])))
;; Gnosis mode
(define-derived-mode gnosis-mode special-mode "Gnosis"
"Gnosis Mode."
:interactive t
(display-line-numbers-mode 0)
:lighter " gnosis-mode")
;;; gnosis.el ends here
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