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feat: add diffing in review buffer

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Lucas Sta Maria 2025-08-26 22:28:21 +08:00
parent ac1757c0a0
commit 3fd3e90633
Signed by: lucas
GPG key ID: F07FB16A826E3B47
1 changed files with 58 additions and 0 deletions
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58
ghpr-review.el
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@ -84,6 +84,7 @@
(define-key prefix-map (kbd "C-a") 'ghpr-review-approve)
(define-key prefix-map (kbd "C-r") 'ghpr-review-reject-changes)
(define-key prefix-map (kbd "C-o") 'ghpr-review-checkout-branch)
(define-key prefix-map (kbd "C-d") 'ghpr-review-magit-diff)
(define-key prefix-map (kbd "C-k") 'ghpr-review-quit)
(define-key map (kbd "C-c") prefix-map)
map)
@ -411,6 +412,63 @@ Collects review body and inline comments from current buffer."
(error "No PR metadata found in buffer"))
(ghpr--checkout-pr-branch ghpr--review-pr-metadata))
(defun ghpr--review-magit-diff/both-local (local-base-branch local-pr-branch)
"Handle case where both base and PR branches exist locally."
(message "Diffing local branches: %s..%s" local-base-branch local-pr-branch)
(magit-diff-range (format "%s..%s" local-base-branch local-pr-branch)))
(defun ghpr--review-magit-diff/base-local-pr-remote (local-base-branch local-pr-branch pr-metadata)
"Handle case where base branch exists locally but PR branch needs to be fetched."
(message "Local base branch found, fetching and checking out PR branch...")
(magit-git-fetch "origin" nil)
(ghpr--checkout-pr-branch pr-metadata)
(if (magit-branch-p local-pr-branch)
(progn
(message "Diffing: %s..%s" local-base-branch local-pr-branch)
(magit-diff-range (format "%s..%s" local-base-branch local-pr-branch)))
(error "Unable to create PR branch. This may happen when testing on a repository that doesn't contain the actual PR")))
(defun ghpr--review-magit-diff/remote-handling (local-base-branch local-pr-branch remote-base-branch local-base-exists-p local-pr-exists-p pr-metadata)
"Handle case where remote operations are needed for base and/or PR branch."
(message "Local branches not found, fetching and checking out...")
(magit-git-fetch "origin" nil)
(unless local-pr-exists-p
(ghpr--checkout-pr-branch pr-metadata))
(let ((base-to-use (if local-base-exists-p local-base-branch remote-base-branch)))
(if (magit-branch-p local-pr-branch)
(progn
(message "Diffing: %s..%s" base-to-use local-pr-branch)
(magit-diff-range (format "%s..%s" base-to-use local-pr-branch)))
(error "Unable to create PR branch. This may happen when testing on a repository that doesn't contain the actual PR"))))
(defun ghpr-review-magit-diff ()
"Show Magit diff between PR base and head branches.
Checks if branches exist locally first, falls back to remote handling if needed."
(interactive)
(unless ghpr--review-pr-metadata
(error "No PR metadata found in buffer"))
(let* ((pr-number (alist-get 'number ghpr--review-pr-metadata))
(base-ref (alist-get 'base_ref ghpr--review-pr-metadata))
(head-ref (alist-get 'head_ref ghpr--review-pr-metadata))
(local-pr-branch head-ref)
(local-base-branch base-ref)
(remote-base-branch (format "origin/%s" base-ref))
(local-base-exists-p (magit-branch-p local-base-branch))
(local-pr-exists-p (magit-branch-p local-pr-branch)))
(unless base-ref
(error "PR metadata missing base branch reference"))
(unless head-ref
(error "PR metadata missing head branch reference"))
(cond
((and local-base-exists-p local-pr-exists-p)
(ghpr--review-magit-diff/both-local local-base-branch local-pr-branch))
(local-base-exists-p
(ghpr--review-magit-diff/base-local-pr-remote local-base-branch local-pr-branch ghpr--review-pr-metadata))
(t
(ghpr--review-magit-diff/remote-handling local-base-branch local-pr-branch remote-base-branch local-base-exists-p local-pr-exists-p ghpr--review-pr-metadata)))))
(defun ghpr-review-quit ()
"Quit and close the review buffer with confirmation."
(interactive)