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;; -*- lexical-binding: t -*-

(require 'org)
(require 'subr-x)
(require 'cl-lib)

;; General settings
(setq doc-view-continuous t)
(setq lpr-switches (list "-o sides=two-sided-long-edge"
			 "-o fit-to-page"))
(setq export-properties
      (list :section-numbers nil
	    :with-toc nil))

;; Printing
(defun print-report ()
  (interactive)
  (shell-command
   (format "lpr -o sides=two-sided-long-edge -o fit-to-page %s" (buffer-file-name))))
(defalias 'print-buffer 'print-report)

;; Utilities
(defmacro setfun (function-name function)
  "Set functions like using define in scheme"
  `(defun ,function-name (&rest args)
     (apply ,function args)))

(defun set-values (record values)
  "Set record RECORD to values in alist VALUES"
  (mapc (lambda (field-value)
	  (aset record (car field-value) (cdr field-value))) values))

;; Entry creation functions for form display
(defun form-entry (label-field)
  (list (format "%s\n" (car label-field))
	(cdr label-field) "\n\n"))


(defun new-record-filter (record)
  (set-values record default-field-values)
  record)
(setq forms-new-record-filter 'new-record-filter)

;; Entry creation functions for org export
(defun make-org-entry-function (format-string)
  (lambda (label-field)
    (let* ((label (car label-field))
	   (field-no (cdr label-field))
	   (value (get-field field-no)))
      (if value
	  (princ (format format-string label
			 (replace-regexp-in-string "\n" "\n\n" value)))
	(user-error "Field \"%s\" should not be blank" label)))))

(defun get-field (field)
  "Parse form and return field FIELD from form"
  (cond ((integerp field) (nth (1- field) (forms--parse-form)))
	((stringp field) field)))

(setfun single-line-org-entry (make-org-entry-function "*%s:* %s\n\n"))
(setfun multi-line-org-entry (make-org-entry-function "\n* %s\n%s\n\n"))

(defun text-if-non-blank (text)
  (if (and text (not (string-blank-p text)))
      (princ (format "%s\n\n" text))))

  (princ (format "#+%s: %s\n" (car keyword-value) (cdr keyword-value))))
(defun ksh-forms-org-keyword (keyword-value)

(defun ksh-forms-org-latex-header (header)
  (ksh-forms-org-keyword (cons "LATEX_HEADER" header)))

(defun forms-print ()
  (interactive)
  (find-file (org-to-pdf (funcall form-to-org))))

(setq org-latex-compiler "xelatex")

(defun org-to-pdf (org-source)
  (let ((tex-file-path (format "%s.tex" (make-temp-file "report"))))
    (with-temp-buffer
      (insert org-source)
      (org-export-to-file 'latex tex-file-path
	nil nil nil nil export-properties 'org-latex-compile))))

(make-variable-buffer-local 'form-to-org)