drone/app/api/handler/pullreq/pr_diff.go

101 lines
2.7 KiB
Go

// Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pullreq
import (
"encoding/json"
"io"
"net/http"
"strings"
"github.com/harness/gitness/app/api/controller/pullreq"
"github.com/harness/gitness/app/api/render"
"github.com/harness/gitness/app/api/request"
"github.com/harness/gitness/errors"
gittypes "github.com/harness/gitness/git/api"
)
// HandleDiff returns a http.HandlerFunc that returns diff.
func HandleDiff(pullreqCtrl *pullreq.Controller) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
session, _ := request.AuthSessionFrom(ctx)
repoRef, err := request.GetRepoRefFromPath(r)
if err != nil {
render.TranslatedUserError(ctx, w, err)
return
}
pullreqNumber, err := request.GetPullReqNumberFromPath(r)
if err != nil {
render.TranslatedUserError(ctx, w, err)
return
}
setSHAs := func(sourceSHA, mergeBaseSHA string) {
w.Header().Set("X-Source-Sha", sourceSHA)
w.Header().Set("X-Merge-Base-Sha", mergeBaseSHA)
}
files := gittypes.FileDiffRequests{}
switch r.Method {
case http.MethodPost:
if err = json.NewDecoder(r.Body).Decode(&files); err != nil && !errors.Is(err, io.EOF) {
render.TranslatedUserError(ctx, w, err)
return
}
case http.MethodGet:
// TBD: this will be removed in future because of URL limit in browser to 2048 chars.
files = request.GetFileDiffFromQuery(r)
}
if strings.HasPrefix(r.Header.Get("Accept"), "text/plain") {
err := pullreqCtrl.RawDiff(ctx, w, session, repoRef, pullreqNumber, setSHAs, files...)
if err != nil {
http.Error(w, err.Error(), http.StatusOK)
}
return
}
includePatch, err := request.QueryParamAsBoolOrDefault(r, "include_patch", false)
if err != nil {
render.TranslatedUserError(ctx, w, err)
return
}
ignoreWhitespace, err := request.QueryParamAsBoolOrDefault(r, request.QueryParamIgnoreWhitespace, false)
if err != nil {
render.TranslatedUserError(ctx, w, err)
return
}
stream, err := pullreqCtrl.Diff(
ctx,
session,
repoRef,
pullreqNumber,
setSHAs,
includePatch,
ignoreWhitespace,
files...,
)
if err != nil {
render.TranslatedUserError(ctx, w, err)
return
}
render.JSONArrayDynamic(ctx, w, stream)
}
}