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forgejo/routers/api/v1/repo/compare.go
Earl Warren d6e4342353 fix: make API /repos/{owner}/{repo}/compare/{basehead} work with forks (#8326)
- fix: API must use headGitRepo instead of ctx.Repo.GitRepo for comparing
- fix: make API /repos/{owner}/{repo}/compare/{basehead} work with forks
- add test coverage for both fixes and the underlying function `parseCompareInfo`
- refactor and improve part of the helpers from `tests/integration/api_helper_for_declarative_test.go`
- remove a few wrong or misleading comments

Refs forgejo/forgejo#7978

## Note on the focus of the PR

It was initially created to address a regression introduced in v12. But the tests that verify it is fixed discovered a v11.0 bug. They cannot conveniently be separated because they both relate to the same area of code that was previously not covered by any test.

## Note on v11.0 backport

It must be manually done by cherry-picking all commits up to and not including `fix: API must use headGitRepo instead of ctx.Repo.GitRepo for comparing` because it is v12 specific.

## Checklist

The [contributor guide](https://forgejo.org/docs/next/contributor/) contains information that will be helpful to first time contributors. There also are a few [conditions for merging Pull Requests in Forgejo repositories](https://codeberg.org/forgejo/governance/src/branch/main/PullRequestsAgreement.md). You are also welcome to join the [Forgejo development chatroom](https://matrix.to/#/#forgejo-development:matrix.org).

### Tests

- I added test coverage for Go changes...
  - [x] in the `tests/integration` directory if it involves interactions with a live Forgejo server.

### Documentation

- [x] I did not document these changes and I do not expect someone else to do it.

### Release notes

- [x] I do not want this change to show in the release notes.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8326
Reviewed-by: Otto <otto@codeberg.org>
Co-authored-by: Earl Warren <contact@earl-warren.org>
Co-committed-by: Earl Warren <contact@earl-warren.org>
2025-06-28 23:28:12 +02:00

102 lines
2.7 KiB
Go

// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"net/http"
"strings"
user_model "forgejo.org/models/user"
"forgejo.org/modules/gitrepo"
api "forgejo.org/modules/structs"
"forgejo.org/services/context"
"forgejo.org/services/convert"
)
// CompareDiff compare two branches or commits
func CompareDiff(ctx *context.APIContext) {
// swagger:operation GET /repos/{owner}/{repo}/compare/{basehead} repository repoCompareDiff
// ---
// summary: Get commit comparison information
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: basehead
// in: path
// description: compare two branches or commits
// type: string
// required: true
// responses:
// "200":
// "$ref": "#/responses/Compare"
// "404":
// "$ref": "#/responses/notFound"
if ctx.Repo.GitRepo == nil {
gitRepo, err := gitrepo.OpenRepository(ctx, ctx.Repo.Repository)
if err != nil {
ctx.Error(http.StatusInternalServerError, "OpenRepository", err)
return
}
ctx.Repo.GitRepo = gitRepo
defer gitRepo.Close()
}
infoPath := ctx.Params("*")
infos := []string{ctx.Repo.Repository.DefaultBranch, ctx.Repo.Repository.DefaultBranch}
if infoPath != "" {
infos = strings.SplitN(infoPath, "...", 2)
if len(infos) != 2 {
if infos = strings.SplitN(infoPath, "..", 2); len(infos) != 2 {
infos = []string{ctx.Repo.Repository.DefaultBranch, infoPath}
}
}
}
headRepository, headGitRepo, ci, _, _ := parseCompareInfo(ctx, api.CreatePullRequestOption{
Base: infos[0],
Head: infos[1],
})
if ctx.Written() {
return
}
defer headGitRepo.Close()
verification := ctx.FormString("verification") == "" || ctx.FormBool("verification")
files := ctx.FormString("files") == "" || ctx.FormBool("files")
apiCommits := make([]*api.Commit, 0, len(ci.Commits))
apiFiles := []*api.CommitAffectedFiles{}
userCache := make(map[string]*user_model.User)
for i := 0; i < len(ci.Commits); i++ {
apiCommit, err := convert.ToCommit(ctx, headRepository, headGitRepo, ci.Commits[i], userCache,
convert.ToCommitOptions{
Stat: true,
Verification: verification,
Files: files,
})
if err != nil {
ctx.ServerError("toCommit", err)
return
}
apiCommits = append(apiCommits, apiCommit)
apiFiles = append(apiFiles, apiCommit.Files...)
}
ctx.JSON(http.StatusOK, &api.Compare{
TotalCommits: len(ci.Commits),
Commits: apiCommits,
Files: apiFiles,
})
}