;;; test-pearl-assignee-labels.el --- Tests for set-assignee / set-labels -*- lexical-binding: t; -*-

;; Copyright (C) 2026 Craig Jennings

;; Author: Craig Jennings <c@cjennings.net>

;; 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 <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Tests for the two picker commands that resolve names to ids:
;; `pearl-edit-assignee' and `pearl-edit-labels'.  As save-model-v2
;; buffer-editors they write the LINEAR-ASSIGNEE / LABELS drawer (and the live
;; id sets) but do NOT push -- the change reconciles at the next save (the push
;; path is covered in test-pearl-save).  The resolver is stubbed.

;;; Code:

(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
(require 'cl-lib)

(defmacro test-pearl--in-org (content &rest body)
  "Run BODY in an org-mode temp buffer holding CONTENT at point-min."
  (declare (indent 1))
  `(with-temp-buffer
     (insert ,content)
     (org-mode)
     (goto-char (point-min))
     ,@body))

;;; edit-assignee (buffer-editor: writes the drawer, no push)

(ert-deftest test-pearl-edit-assignee-writes-drawer-no-push ()
  "edit-assignee resolves the name, writes the drawer, and does not push."
  (let ((pushed nil))
    (test-pearl--in-org
        "*** TODO Title\n:PROPERTIES:\n:LINEAR-ID: a\n:LINEAR-TEAM-ID: team-1\n:LINEAR-ASSIGNEE-ID: old\n:LINEAR-ASSIGNEE-NAME: Someone\n:END:\n"
      (cl-letf (((symbol-function 'pearl--resolve-team-id)
                 (lambda (_kind _name _team &optional _force) "u9"))
                ((symbol-function 'pearl--update-issue-async)
                 (lambda (&rest _) (setq pushed t))))
        (pearl-edit-assignee "Craig")
        (should-not pushed)
        (should (string= "Craig" (org-entry-get nil "LINEAR-ASSIGNEE-NAME")))
        (should (string= "u9" (org-entry-get nil "LINEAR-ASSIGNEE-ID")))))))

(ert-deftest test-pearl-edit-assignee-unresolvable-errors ()
  "An unresolvable assignee name signals a user error and writes nothing."
  (test-pearl--in-org
      "*** TODO Title\n:PROPERTIES:\n:LINEAR-ID: a\n:LINEAR-TEAM-ID: team-1\n:END:\n"
    (cl-letf (((symbol-function 'pearl--resolve-team-id) (lambda (&rest _) nil)))
      (should-error (pearl-edit-assignee "Nobody") :type 'user-error))))

(ert-deftest test-pearl-edit-assignee-not-on-issue-errors ()
  "edit-assignee outside a Linear issue heading signals a user error."
  (test-pearl--in-org "* Plain heading\nno id\n"
    (should-error (pearl-edit-assignee "Craig") :type 'user-error)))

;;; edit-labels (buffer-editor: writes the drawer + live ids, no push)

(ert-deftest test-pearl-edit-labels-writes-names-and-ids-no-push ()
  "edit-labels resolves each name, writes LINEAR-LABELS + LINEAR-LABEL-IDS, no push."
  (let ((pushed nil))
    (test-pearl--in-org
        "*** TODO Title\n:PROPERTIES:\n:LINEAR-ID: a\n:LINEAR-TEAM-ID: team-1\n:LINEAR-LABELS: []\n:END:\n"
      (cl-letf (((symbol-function 'pearl--resolve-team-id)
                 (lambda (_kind name _team &optional _force)
                   (pcase name ("bug" "l1") ("p1" "l2") (_ nil))))
                ((symbol-function 'pearl--update-issue-async)
                 (lambda (&rest _) (setq pushed t))))
        (pearl-edit-labels '("bug" "p1"))
        (should-not pushed)
        (should (string= "[bug, p1]" (org-entry-get nil "LINEAR-LABELS")))
        (should (string= "l1 l2" (org-entry-get nil "LINEAR-LABEL-IDS")))))))

(ert-deftest test-pearl-edit-labels-clear-writes-empty ()
  "Clearing labels writes an empty drawer and empty id set, no push."
  (let ((pushed nil))
    (test-pearl--in-org
        "*** TODO Title\n:PROPERTIES:\n:LINEAR-ID: a\n:LINEAR-TEAM-ID: team-1\n:LINEAR-LABELS: [bug]\n:LINEAR-LABEL-IDS: l1\n:END:\n"
      (cl-letf (((symbol-function 'pearl--update-issue-async)
                 (lambda (&rest _) (setq pushed t))))
        (pearl-edit-labels '())
        (should-not pushed)
        (should (string= "[]" (org-entry-get nil "LINEAR-LABELS")))
        (should (string= "" (org-entry-get nil "LINEAR-LABEL-IDS")))))))

(ert-deftest test-pearl-edit-labels-unresolvable-errors ()
  "An unresolvable label name signals a user error and writes nothing."
  (test-pearl--in-org
      "*** TODO Title\n:PROPERTIES:\n:LINEAR-ID: a\n:LINEAR-TEAM-ID: team-1\n:END:\n"
    (cl-letf (((symbol-function 'pearl--resolve-team-id) (lambda (&rest _) nil)))
      (should-error (pearl-edit-labels '("ghost")) :type 'user-error))))

(provide 'test-pearl-assignee-labels)
;;; test-pearl-assignee-labels.el ends here