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package api
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"strings"
"time"
"github.com/cli/cli/v2/internal/ghinstance"
"github.com/cli/cli/v2/internal/ghrepo"
"github.com/cli/cli/v2/pkg/set"
"github.com/shurcooL/githubv4"
"golang.org/x/sync/errgroup"
)
type PullRequestsPayload struct {
ViewerCreated PullRequestAndTotalCount
ReviewRequested PullRequestAndTotalCount
CurrentPR *PullRequest
DefaultBranch string
}
type PullRequestAndTotalCount struct {
TotalCount int
PullRequests []PullRequest
}
type PullRequest struct {
ID string
Number int
Title string
State string
Closed bool
URL string
BaseRefName string
BaseRefOid string
HeadRefName string
HeadRefOid string
Body string
Mergeable string
Additions int
Deletions int
ChangedFiles int
MergeStateStatus string
CreatedAt time.Time
UpdatedAt time.Time
ClosedAt *time.Time
MergedAt *time.Time
MergeCommit *Commit
PotentialMergeCommit *Commit
Files struct {
Nodes []PullRequestFile
}
Author Author
MergedBy *Author
HeadRepositoryOwner Owner
HeadRepository *PRRepository
IsCrossRepository bool
IsDraft bool
MaintainerCanModify bool
BaseRef struct {
BranchProtectionRule struct {
RequiresStrictStatusChecks bool
}
}
ReviewDecision string
Commits struct {
TotalCount int
Nodes []PullRequestCommit
}
StatusCheckRollup struct {
Nodes []struct {
Commit struct {
StatusCheckRollup struct {
Contexts struct {
Nodes []struct {
TypeName string `json:"__typename"`
Name string `json:"name"`
Context string `json:"context,omitempty"`
State string `json:"state,omitempty"`
Status string `json:"status"`
Conclusion string `json:"conclusion"`
StartedAt time.Time `json:"startedAt"`
CompletedAt time.Time `json:"completedAt"`
DetailsURL string `json:"detailsUrl"`
TargetURL string `json:"targetUrl,omitempty"`
}
PageInfo struct {
HasNextPage bool
EndCursor string
}
}
}
}
}
}
Assignees Assignees
Labels Labels
ProjectCards ProjectCards
Milestone *Milestone
Comments Comments
ReactionGroups ReactionGroups
Reviews PullRequestReviews
ReviewRequests ReviewRequests
}
type PRRepository struct {
ID string `json:"id"`
Name string `json:"name"`
}
// Commit loads just the commit SHA and nothing else
type Commit struct {
OID string `json:"oid"`
}
type PullRequestCommit struct {
Commit PullRequestCommitCommit
}
// PullRequestCommitCommit contains full information about a commit
type PullRequestCommitCommit struct {
OID string `json:"oid"`
Authors struct {
Nodes []struct {
Name string
Email string
User GitHubUser
}
}
MessageHeadline string
MessageBody string
CommittedDate time.Time
AuthoredDate time.Time
}
type PullRequestFile struct {
Path string `json:"path"`
Additions int `json:"additions"`
Deletions int `json:"deletions"`
}
type ReviewRequests struct {
Nodes []struct {
RequestedReviewer RequestedReviewer
}
}
type RequestedReviewer struct {
TypeName string `json:"__typename"`
Login string `json:"login"`
Name string `json:"name"`
Slug string `json:"slug"`
Organization struct {
Login string `json:"login"`
} `json:"organization"`
}
func (r RequestedReviewer) LoginOrSlug() string {
if r.TypeName == teamTypeName {
return fmt.Sprintf("%s/%s", r.Organization.Login, r.Slug)
}
return r.Login
}
const teamTypeName = "Team"
func (r ReviewRequests) Logins() []string {
logins := make([]string, len(r.Nodes))
for i, r := range r.Nodes {
logins[i] = r.RequestedReviewer.LoginOrSlug()
}
return logins
}
func (pr PullRequest) HeadLabel() string {
if pr.IsCrossRepository {
return fmt.Sprintf("%s:%s", pr.HeadRepositoryOwner.Login, pr.HeadRefName)
}
return pr.HeadRefName
}
func (pr PullRequest) Link() string {
return pr.URL
}
func (pr PullRequest) Identifier() string {
return pr.ID
}
func (pr PullRequest) IsOpen() bool {
return pr.State == "OPEN"
}
type PullRequestReviewStatus struct {
ChangesRequested bool
Approved bool
ReviewRequired bool
}
func (pr *PullRequest) ReviewStatus() PullRequestReviewStatus {
var status PullRequestReviewStatus
switch pr.ReviewDecision {
case "CHANGES_REQUESTED":
status.ChangesRequested = true
case "APPROVED":
status.Approved = true
case "REVIEW_REQUIRED":
status.ReviewRequired = true
}
return status
}
type PullRequestChecksStatus struct {
Pending int
Failing int
Passing int
Total int
}
func (pr *PullRequest) ChecksStatus() (summary PullRequestChecksStatus) {
if len(pr.StatusCheckRollup.Nodes) == 0 {
return
}
commit := pr.StatusCheckRollup.Nodes[0].Commit
for _, c := range commit.StatusCheckRollup.Contexts.Nodes {
state := c.State // StatusContext
if state == "" {
// CheckRun
if c.Status == "COMPLETED" {
state = c.Conclusion
} else {
state = c.Status
}
}
switch state {
case "SUCCESS", "NEUTRAL", "SKIPPED":
summary.Passing++
case "ERROR", "FAILURE", "CANCELLED", "TIMED_OUT", "ACTION_REQUIRED":
summary.Failing++
default: // "EXPECTED", "REQUESTED", "WAITING", "QUEUED", "PENDING", "IN_PROGRESS", "STALE"
summary.Pending++
}
summary.Total++
}
return
}
func (pr *PullRequest) DisplayableReviews() PullRequestReviews {
published := []PullRequestReview{}
for _, prr := range pr.Reviews.Nodes {
//Dont display pending reviews
//Dont display commenting reviews without top level comment body
if prr.State != "PENDING" && !(prr.State == "COMMENTED" && prr.Body == "") {
published = append(published, prr)
}
}
return PullRequestReviews{Nodes: published, TotalCount: len(published)}
}
func (c Client) PullRequestDiff(baseRepo ghrepo.Interface, prNumber int) (io.ReadCloser, error) {
url := fmt.Sprintf("%srepos/%s/pulls/%d",
ghinstance.RESTPrefix(baseRepo.RepoHost()), ghrepo.FullName(baseRepo), prNumber)
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/vnd.github.v3.diff; charset=utf-8")
resp, err := c.http.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode == 404 {
return nil, errors.New("pull request not found")
} else if resp.StatusCode != 200 {
return nil, HandleHTTPError(resp)
}
return resp.Body, nil
}
type pullRequestFeature struct {
HasReviewDecision bool
HasStatusCheckRollup bool
HasBranchProtectionRule bool
}
func determinePullRequestFeatures(httpClient *http.Client, hostname string) (prFeatures pullRequestFeature, err error) {
if !ghinstance.IsEnterprise(hostname) {
prFeatures.HasReviewDecision = true
prFeatures.HasStatusCheckRollup = true
prFeatures.HasBranchProtectionRule = true
return
}
var featureDetection struct {
PullRequest struct {
Fields []struct {
Name string
} `graphql:"fields(includeDeprecated: true)"`
} `graphql:"PullRequest: __type(name: \"PullRequest\")"`
Commit struct {
Fields []struct {
Name string
} `graphql:"fields(includeDeprecated: true)"`
} `graphql:"Commit: __type(name: \"Commit\")"`
}
// needs to be a separate query because the backend only supports 2 `__type` expressions in one query
var featureDetection2 struct {
Ref struct {
Fields []struct {
Name string
} `graphql:"fields(includeDeprecated: true)"`
} `graphql:"Ref: __type(name: \"Ref\")"`
}
v4 := graphQLClient(httpClient, hostname)
g := new(errgroup.Group)
g.Go(func() error {
return v4.QueryNamed(context.Background(), "PullRequest_fields", &featureDetection, nil)
})
g.Go(func() error {
return v4.QueryNamed(context.Background(), "PullRequest_fields2", &featureDetection2, nil)
})
err = g.Wait()
if err != nil {
return
}
for _, field := range featureDetection.PullRequest.Fields {
switch field.Name {
case "reviewDecision":
prFeatures.HasReviewDecision = true
}
}
for _, field := range featureDetection.Commit.Fields {
switch field.Name {
case "statusCheckRollup":
prFeatures.HasStatusCheckRollup = true
}
}
for _, field := range featureDetection2.Ref.Fields {
switch field.Name {
case "branchProtectionRule":
prFeatures.HasBranchProtectionRule = true
}
}
return
}
type StatusOptions struct {
CurrentPR int
HeadRef string
Username string
Fields []string
}
func PullRequestStatus(client *Client, repo ghrepo.Interface, options StatusOptions) (*PullRequestsPayload, error) {
type edges struct {
TotalCount int
Edges []struct {
Node PullRequest
}
}
type response struct {
Repository struct {
DefaultBranchRef struct {
Name string
}
PullRequests edges
PullRequest *PullRequest
}
ViewerCreated edges
ReviewRequested edges
}
var fragments string
if len(options.Fields) > 0 {
fields := set.NewStringSet()
fields.AddValues(options.Fields)
// these are always necessary to find the PR for the current branch
fields.AddValues([]string{"isCrossRepository", "headRepositoryOwner", "headRefName"})
gr := PullRequestGraphQL(fields.ToSlice())
fragments = fmt.Sprintf("fragment pr on PullRequest{%s}fragment prWithReviews on PullRequest{...pr}", gr)
} else {
var err error
fragments, err = pullRequestFragment(client.http, repo.RepoHost())
if err != nil {
return nil, err
}
}
queryPrefix := `
query PullRequestStatus($owner: String!, $repo: String!, $headRefName: String!, $viewerQuery: String!, $reviewerQuery: String!, $per_page: Int = 10) {
repository(owner: $owner, name: $repo) {
defaultBranchRef {
name
}
pullRequests(headRefName: $headRefName, first: $per_page, orderBy: { field: CREATED_AT, direction: DESC }) {
totalCount
edges {
node {
...prWithReviews
}
}
}
}
`
if options.CurrentPR > 0 {
queryPrefix = `
query PullRequestStatus($owner: String!, $repo: String!, $number: Int!, $viewerQuery: String!, $reviewerQuery: String!, $per_page: Int = 10) {
repository(owner: $owner, name: $repo) {
defaultBranchRef {
name
}
pullRequest(number: $number) {
...prWithReviews
}
}
`
}
query := fragments + queryPrefix + `
viewerCreated: search(query: $viewerQuery, type: ISSUE, first: $per_page) {
totalCount: issueCount
edges {
node {
...prWithReviews
}
}
}
reviewRequested: search(query: $reviewerQuery, type: ISSUE, first: $per_page) {
totalCount: issueCount
edges {
node {
...pr
}
}
}
}
`
currentUsername := options.Username
if currentUsername == "@me" && ghinstance.IsEnterprise(repo.RepoHost()) {
var err error
currentUsername, err = CurrentLoginName(client, repo.RepoHost())
if err != nil {
return nil, err
}
}
viewerQuery := fmt.Sprintf("repo:%s state:open is:pr author:%s", ghrepo.FullName(repo), currentUsername)
reviewerQuery := fmt.Sprintf("repo:%s state:open review-requested:%s", ghrepo.FullName(repo), currentUsername)
currentPRHeadRef := options.HeadRef
branchWithoutOwner := currentPRHeadRef
if idx := strings.Index(currentPRHeadRef, ":"); idx >= 0 {
branchWithoutOwner = currentPRHeadRef[idx+1:]
}
variables := map[string]interface{}{
"viewerQuery": viewerQuery,
"reviewerQuery": reviewerQuery,
"owner": repo.RepoOwner(),
"repo": repo.RepoName(),
"headRefName": branchWithoutOwner,
"number": options.CurrentPR,
}
var resp response
err := client.GraphQL(repo.RepoHost(), query, variables, &resp)
if err != nil {
return nil, err
}
var viewerCreated []PullRequest
for _, edge := range resp.ViewerCreated.Edges {
viewerCreated = append(viewerCreated, edge.Node)
}
var reviewRequested []PullRequest
for _, edge := range resp.ReviewRequested.Edges {
reviewRequested = append(reviewRequested, edge.Node)
}
var currentPR = resp.Repository.PullRequest
if currentPR == nil {
for _, edge := range resp.Repository.PullRequests.Edges {
if edge.Node.HeadLabel() == currentPRHeadRef {
currentPR = &edge.Node
break // Take the most recent PR for the current branch
}
}
}
payload := PullRequestsPayload{
ViewerCreated: PullRequestAndTotalCount{
PullRequests: viewerCreated,
TotalCount: resp.ViewerCreated.TotalCount,
},
ReviewRequested: PullRequestAndTotalCount{
PullRequests: reviewRequested,
TotalCount: resp.ReviewRequested.TotalCount,
},
CurrentPR: currentPR,
DefaultBranch: resp.Repository.DefaultBranchRef.Name,
}
return &payload, nil
}
func pullRequestFragment(httpClient *http.Client, hostname string) (string, error) {
cachedClient := NewCachedClient(httpClient, time.Hour*24)
prFeatures, err := determinePullRequestFeatures(cachedClient, hostname)
if err != nil {
return "", err
}
fields := []string{
"number", "title", "state", "url", "isDraft", "isCrossRepository",
"headRefName", "headRepositoryOwner", "mergeStateStatus",
}
if prFeatures.HasStatusCheckRollup {
fields = append(fields, "statusCheckRollup")
}
if prFeatures.HasBranchProtectionRule {
fields = append(fields, "requiresStrictStatusChecks")
}
var reviewFields []string
if prFeatures.HasReviewDecision {
reviewFields = append(reviewFields, "reviewDecision")
}
fragments := fmt.Sprintf(`
fragment pr on PullRequest {%s}
fragment prWithReviews on PullRequest {...pr,%s}
`, PullRequestGraphQL(fields), PullRequestGraphQL(reviewFields))
return fragments, nil
}
// CreatePullRequest creates a pull request in a GitHub repository
func CreatePullRequest(client *Client, repo *Repository, params map[string]interface{}) (*PullRequest, error) {
query := `
mutation PullRequestCreate($input: CreatePullRequestInput!) {
createPullRequest(input: $input) {
pullRequest {
id
url
}
}
}`
inputParams := map[string]interface{}{
"repositoryId": repo.ID,
}
for key, val := range params {
switch key {
case "title", "body", "draft", "baseRefName", "headRefName", "maintainerCanModify":
inputParams[key] = val
}
}
variables := map[string]interface{}{
"input": inputParams,
}
result := struct {
CreatePullRequest struct {
PullRequest PullRequest
}
}{}
err := client.GraphQL(repo.RepoHost(), query, variables, &result)
if err != nil {
return nil, err
}
pr := &result.CreatePullRequest.PullRequest
// metadata parameters aren't currently available in `createPullRequest`,
// but they are in `updatePullRequest`
updateParams := make(map[string]interface{})
for key, val := range params {
switch key {
case "assigneeIds", "labelIds", "projectIds", "milestoneId":
if !isBlank(val) {
updateParams[key] = val
}
}
}
if len(updateParams) > 0 {
updateQuery := `
mutation PullRequestCreateMetadata($input: UpdatePullRequestInput!) {
updatePullRequest(input: $input) { clientMutationId }
}`
updateParams["pullRequestId"] = pr.ID
variables := map[string]interface{}{
"input": updateParams,
}
err := client.GraphQL(repo.RepoHost(), updateQuery, variables, &result)
if err != nil {
return pr, err
}
}
// reviewers are requested in yet another additional mutation
reviewParams := make(map[string]interface{})
if ids, ok := params["userReviewerIds"]; ok && !isBlank(ids) {
reviewParams["userIds"] = ids
}
if ids, ok := params["teamReviewerIds"]; ok && !isBlank(ids) {
reviewParams["teamIds"] = ids
}
//TODO: How much work to extract this into own method and use for create and edit?
if len(reviewParams) > 0 {
reviewQuery := `
mutation PullRequestCreateRequestReviews($input: RequestReviewsInput!) {
requestReviews(input: $input) { clientMutationId }
}`
reviewParams["pullRequestId"] = pr.ID
reviewParams["union"] = true
variables := map[string]interface{}{
"input": reviewParams,
}
err := client.GraphQL(repo.RepoHost(), reviewQuery, variables, &result)
if err != nil {
return pr, err
}
}
return pr, nil
}
func UpdatePullRequest(client *Client, repo ghrepo.Interface, params githubv4.UpdatePullRequestInput) error {
var mutation struct {
UpdatePullRequest struct {
PullRequest struct {
ID string
}
} `graphql:"updatePullRequest(input: $input)"`
}
variables := map[string]interface{}{"input": params}
gql := graphQLClient(client.http, repo.RepoHost())
err := gql.MutateNamed(context.Background(), "PullRequestUpdate", &mutation, variables)
return err
}
func UpdatePullRequestReviews(client *Client, repo ghrepo.Interface, params githubv4.RequestReviewsInput) error {
var mutation struct {
RequestReviews struct {
PullRequest struct {
ID string
}
} `graphql:"requestReviews(input: $input)"`
}
variables := map[string]interface{}{"input": params}
gql := graphQLClient(client.http, repo.RepoHost())
err := gql.MutateNamed(context.Background(), "PullRequestUpdateRequestReviews", &mutation, variables)
return err
}
func isBlank(v interface{}) bool {
switch vv := v.(type) {
case string:
return vv == ""
case []string:
return len(vv) == 0
default:
return true
}
}
func PullRequestClose(client *Client, repo ghrepo.Interface, pr *PullRequest) error {
var mutation struct {
ClosePullRequest struct {
PullRequest struct {
ID githubv4.ID
}
} `graphql:"closePullRequest(input: $input)"`
}
variables := map[string]interface{}{
"input": githubv4.ClosePullRequestInput{
PullRequestID: pr.ID,
},
}
gql := graphQLClient(client.http, repo.RepoHost())
err := gql.MutateNamed(context.Background(), "PullRequestClose", &mutation, variables)
return err
}
func PullRequestReopen(client *Client, repo ghrepo.Interface, pr *PullRequest) error {
var mutation struct {
ReopenPullRequest struct {
PullRequest struct {
ID githubv4.ID
}
} `graphql:"reopenPullRequest(input: $input)"`
}
variables := map[string]interface{}{
"input": githubv4.ReopenPullRequestInput{
PullRequestID: pr.ID,
},
}
gql := graphQLClient(client.http, repo.RepoHost())
err := gql.MutateNamed(context.Background(), "PullRequestReopen", &mutation, variables)
return err
}
func PullRequestReady(client *Client, repo ghrepo.Interface, pr *PullRequest) error {
var mutation struct {
MarkPullRequestReadyForReview struct {
PullRequest struct {
ID githubv4.ID
}
} `graphql:"markPullRequestReadyForReview(input: $input)"`
}
variables := map[string]interface{}{
"input": githubv4.MarkPullRequestReadyForReviewInput{
PullRequestID: pr.ID,
},
}
gql := graphQLClient(client.http, repo.RepoHost())
return gql.MutateNamed(context.Background(), "PullRequestReadyForReview", &mutation, variables)
}
func BranchDeleteRemote(client *Client, repo ghrepo.Interface, branch string) error {
path := fmt.Sprintf("repos/%s/%s/git/refs/heads/%s", repo.RepoOwner(), repo.RepoName(), branch)
return client.REST(repo.RepoHost(), "DELETE", path, nil, nil)
}