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fix: use pagination to list MR discussions #529

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fix: use pagination to list MR discussions #529

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129b83b
feat: implement pagination for MR discussions
jakubbortlik Feb 17, 2026
946b718
perf: only fetch emojis for filtered discussions
jakubbortlik Feb 17, 2026
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15 changes: 7 additions & 8 deletions cmd/app/list_discussions.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ package app

import (
"net/http"
"slices"
"sort"
"sync"
"time"
Expand Down Expand Up @@ -90,18 +91,16 @@ func (a discussionsListerService) ServeHTTP(w http.ResponseWriter, r *http.Reque
},
}

discussions, res, err := a.client.ListMergeRequestDiscussions(a.projectInfo.ProjectId, a.projectInfo.MergeId, &mergeRequestDiscussionOptions)
it, hasErr := gitlab.Scan(func(p gitlab.PaginationOptionFunc) ([]*gitlab.Discussion, *gitlab.Response, error) {
return a.client.ListMergeRequestDiscussions(a.projectInfo.ProjectId, a.projectInfo.MergeId, &mergeRequestDiscussionOptions, p)
})
discussions := slices.Collect(it)

if err != nil {
if err := hasErr(); err != nil {
handleError(w, err, "Could not list discussions", http.StatusInternalServerError)
return
}

if res.StatusCode >= 300 {
handleError(w, GenericError{r.URL.Path}, "Could not list discussions", res.StatusCode)
return
}

/* Filter out any discussions started by a blacklisted user
and system discussions, then return them sorted by created date */
var unlinkedDiscussions []*gitlab.Discussion
Expand All @@ -124,7 +123,7 @@ func (a discussionsListerService) ServeHTTP(w http.ResponseWriter, r *http.Reque

/* Collect IDs in order to fetch emojis */
var noteIds []int64
for _, discussion := range discussions {
for _, discussion := range slices.Concat(linkedDiscussions, unlinkedDiscussions) {
for _, note := range discussion.Notes {
noteIds = append(noteIds, note.ID)
}
Expand Down
11 changes: 0 additions & 11 deletions cmd/app/list_discussions_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -127,17 +127,6 @@ func TestListDiscussions(t *testing.T) {
data, _ := getFailData(t, svc, request)
checkErrorFromGitlab(t, data, "Could not list discussions")
})
t.Run("Handles non-200s from Gitlab client", func(t *testing.T) {
request := makeRequest(t, http.MethodPost, "/mr/discussions/list", DiscussionsRequest{Blacklist: []string{}})
svc := middleware(
discussionsListerService{testProjectData, fakeDiscussionsLister{testBase: testBase{status: http.StatusSeeOther}}},
withMr(testProjectData, fakeMergeRequestLister{}),
withPayloadValidation(methodToPayload{http.MethodPost: newPayload[DiscussionsRequest]}),
withMethodCheck(http.MethodPost),
)
data, _ := getFailData(t, svc, request)
checkNon200(t, data, "Could not list discussions", "/mr/discussions/list")
})
t.Run("Handles error from emoji service", func(t *testing.T) {
request := makeRequest(t, http.MethodPost, "/mr/discussions/list", DiscussionsRequest{Blacklist: []string{}})
svc := middleware(
Expand Down