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Dynamic org-agenda with org-roam - https://d12frosted.io/posts/2021-01-16-task-management-with-roam-vol5.html
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(defun +org-notes-project-p () | |
"Return non-nil if current buffer has any todo entry. | |
TODO entries marked as done are ignored, meaning the this | |
function returns nil if current buffer contains only completed | |
tasks." | |
(seq-find ; (3) | |
(lambda (type) | |
(eq type 'todo)) | |
(org-element-map ; (2) | |
(org-element-parse-buffer 'headline) ; (1) | |
'headline | |
(lambda (h) | |
(org-element-property :todo-type h))))) | |
(defun +org-notes-project-update-tag () | |
"Update PROJECT tag in the current buffer." | |
(when (and (not (active-minibuffer-window)) | |
(+org-notes-buffer-p)) | |
(let* ((file (buffer-file-name (buffer-base-buffer))) | |
(all-tags (org-roam--extract-tags file)) | |
(prop-tags (org-roam--extract-tags-prop file)) | |
(tags prop-tags)) | |
(if (+org-notes-project-p) | |
(setq tags (cons "Project" tags)) | |
(setq tags (remove "Project" tags))) | |
(unless (eq prop-tags tags) | |
(org-roam--set-global-prop | |
"ROAM_TAGS" | |
(combine-and-quote-strings (seq-uniq tags))))))) | |
(defun +org-notes-buffer-p () | |
"Return non-nil if the currently visited buffer is a note." | |
(and buffer-file-name | |
(string-prefix-p | |
(expand-file-name (file-name-as-directory org-roam-directory)) | |
(file-name-directory buffer-file-name)))) | |
(defun +org-notes-project-files () | |
"Return a list of note files containing Project tag." | |
(seq-map | |
#'car | |
(org-roam-db-query | |
[:select file | |
:from tags | |
:where (like tags (quote "%\"Project\"%"))]))) | |
(defun +agenda-files-update (&rest _) | |
"Update the value of `org-agenda-files'." | |
(setq org-agenda-files (+org-notes-project-files))) | |
(add-hook 'find-file-hook #'+org-notes-project-update-tag) | |
(add-hook 'before-save-hook #'+org-notes-project-update-tag) | |
(advice-add 'org-agenda :before #'+agenda-files-update) |
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