1 files changed, 0 insertions, 423 deletions
diff --git a/bridge/github/iterator.go b/bridge/github/iterator.go
deleted file mode 100644
index d21faae8..00000000
--- a/bridge/github/iterator.go
+++ /dev/null
@@ -1,423 +0,0 @@
-package github
-
-import (
-	"context"
-	"time"
-
-	"github.com/pkg/errors"
-	"github.com/shurcooL/githubv4"
-)
-
-type iterator struct {
-	// Github graphql client
-	gc *githubv4.Client
-
-	// The iterator will only query issues updated or created after the date given in
-	// the variable since.
-	since time.Time
-
-	// Shared context, which is used for all graphql queries.
-	ctx context.Context
-
-	// Sticky error
-	err error
-
-	// Issue iterator
-	issueIter issueIter
-}
-
-type issueIter struct {
-	iterVars
-	query         issueQuery
-	issueEditIter []issueEditIter
-	timelineIter  []timelineIter
-}
-
-type issueEditIter struct {
-	iterVars
-	query issueEditQuery
-}
-
-type timelineIter struct {
-	iterVars
-	query           timelineQuery
-	commentEditIter []commentEditIter
-}
-
-type commentEditIter struct {
-	iterVars
-	query commentEditQuery
-}
-
-type iterVars struct {
-	// Iterator index
-	index int
-
-	// capacity is the number of elements (issues, issue edits, timeline items, or
-	// comment edits) to query at a time. More capacity = more used memory =
-	// less queries to make.
-	capacity int
-
-	// Variable assignments for graphql query
-	variables varmap
-}
-
-type varmap map[string]interface{}
-
-func newIterVars(capacity int) iterVars {
-	return iterVars{
-		index:     -1,
-		capacity:  capacity,
-		variables: varmap{},
-	}
-}
-
-// NewIterator creates and initialize a new iterator.
-func NewIterator(ctx context.Context, client *githubv4.Client, capacity int, owner, project string, since time.Time) *iterator {
-	i := &iterator{
-		gc:    client,
-		since: since,
-		ctx:   ctx,
-		issueIter: issueIter{
-			iterVars:      newIterVars(capacity),
-			timelineIter:  make([]timelineIter, capacity),
-			issueEditIter: make([]issueEditIter, capacity),
-		},
-	}
-	i.issueIter.variables.setOwnerProject(owner, project)
-	for idx := range i.issueIter.issueEditIter {
-		ie := &i.issueIter.issueEditIter[idx]
-		ie.iterVars = newIterVars(capacity)
-	}
-	for i1 := range i.issueIter.timelineIter {
-		tli := &i.issueIter.timelineIter[i1]
-		tli.iterVars = newIterVars(capacity)
-		tli.commentEditIter = make([]commentEditIter, capacity)
-		for i2 := range tli.commentEditIter {
-			cei := &tli.commentEditIter[i2]
-			cei.iterVars = newIterVars(capacity)
-		}
-	}
-	i.resetIssueVars()
-	return i
-}
-
-func (v *varmap) setOwnerProject(owner, project string) {
-	(*v)["owner"] = githubv4.String(owner)
-	(*v)["name"] = githubv4.String(project)
-}
-
-func (i *iterator) resetIssueVars() {
-	vars := &i.issueIter.variables
-	(*vars)["issueFirst"] = githubv4.Int(i.issueIter.capacity)
-	(*vars)["issueAfter"] = (*githubv4.String)(nil)
-	(*vars)["issueSince"] = githubv4.DateTime{Time: i.since}
-	i.issueIter.query.Repository.Issues.PageInfo.HasNextPage = true
-	i.issueIter.query.Repository.Issues.PageInfo.EndCursor = ""
-}
-
-func (i *iterator) resetIssueEditVars() {
-	for idx := range i.issueIter.issueEditIter {
-		ie := &i.issueIter.issueEditIter[idx]
-		ie.variables["issueEditLast"] = githubv4.Int(ie.capacity)
-		ie.variables["issueEditBefore"] = (*githubv4.String)(nil)
-		ie.query.Node.Issue.UserContentEdits.PageInfo.HasNextPage = true
-		ie.query.Node.Issue.UserContentEdits.PageInfo.EndCursor = ""
-	}
-}
-
-func (i *iterator) resetTimelineVars() {
-	for idx := range i.issueIter.timelineIter {
-		ip := &i.issueIter.timelineIter[idx]
-		ip.variables["timelineFirst"] = githubv4.Int(ip.capacity)
-		ip.variables["timelineAfter"] = (*githubv4.String)(nil)
-		ip.query.Node.Issue.TimelineItems.PageInfo.HasNextPage = true
-		ip.query.Node.Issue.TimelineItems.PageInfo.EndCursor = ""
-	}
-}
-
-func (i *iterator) resetCommentEditVars() {
-	for i1 := range i.issueIter.timelineIter {
-		for i2 := range i.issueIter.timelineIter[i1].commentEditIter {
-			ce := &i.issueIter.timelineIter[i1].commentEditIter[i2]
-			ce.variables["commentEditLast"] = githubv4.Int(ce.capacity)
-			ce.variables["commentEditBefore"] = (*githubv4.String)(nil)
-			ce.query.Node.IssueComment.UserContentEdits.PageInfo.HasNextPage = true
-			ce.query.Node.IssueComment.UserContentEdits.PageInfo.EndCursor = ""
-		}
-	}
-}
-
-// Error return last encountered error
-func (i *iterator) Error() error {
-	if i.err != nil {
-		return i.err
-	}
-	return i.ctx.Err() // might return nil
-}
-
-func (i *iterator) HasError() bool {
-	return i.err != nil || i.ctx.Err() != nil
-}
-
-func (i *iterator) currIssueItem() *issue {
-	return &i.issueIter.query.Repository.Issues.Nodes[i.issueIter.index]
-}
-
-func (i *iterator) currIssueEditIter() *issueEditIter {
-	return &i.issueIter.issueEditIter[i.issueIter.index]
-}
-
-func (i *iterator) currTimelineIter() *timelineIter {
-	return &i.issueIter.timelineIter[i.issueIter.index]
-}
-
-func (i *iterator) currCommentEditIter() *commentEditIter {
-	timelineIter := i.currTimelineIter()
-	return &timelineIter.commentEditIter[timelineIter.index]
-}
-
-func (i *iterator) currIssueGqlNodeId() githubv4.ID {
-	return i.currIssueItem().Id
-}
-
-// NextIssue returns true if there exists a next issue and advances the iterator by one.
-// It is used to iterate over all issues. Queries to github are made when necessary.
-func (i *iterator) NextIssue() bool {
-	if i.HasError() {
-		return false
-	}
-	index := &i.issueIter.index
-	issues := &i.issueIter.query.Repository.Issues
-	issueItems := &issues.Nodes
-	if 0 <= *index && *index < len(*issueItems)-1 {
-		*index += 1
-		return true
-	}
-
-	if !issues.PageInfo.HasNextPage {
-		return false
-	}
-	nextIssue := i.queryIssue()
-	return nextIssue
-}
-
-// IssueValue returns the actual issue value.
-func (i *iterator) IssueValue() issue {
-	return *i.currIssueItem()
-}
-
-func (i *iterator) queryIssue() bool {
-	ctx, cancel := context.WithTimeout(i.ctx, defaultTimeout)
-	defer cancel()
-	if endCursor := i.issueIter.query.Repository.Issues.PageInfo.EndCursor; endCursor != "" {
-		i.issueIter.variables["issueAfter"] = endCursor
-	}
-	if err := i.gc.Query(ctx, &i.issueIter.query, i.issueIter.variables); err != nil {
-		i.err = err
-		return false
-	}
-	i.resetIssueEditVars()
-	i.resetTimelineVars()
-	issueItems := &i.issueIter.query.Repository.Issues.Nodes
-	if len(*issueItems) <= 0 {
-		i.issueIter.index = -1
-		return false
-	}
-	i.issueIter.index = 0
-	return true
-}
-
-// NextIssueEdit returns true if there exists a next issue edit and advances the iterator
-// by one. It is used to iterate over all the issue edits. Queries to github are made when
-// necessary.
-func (i *iterator) NextIssueEdit() bool {
-	if i.HasError() {
-		return false
-	}
-	ieIter := i.currIssueEditIter()
-	ieIdx := &ieIter.index
-	ieItems := ieIter.query.Node.Issue.UserContentEdits
-	if 0 <= *ieIdx && *ieIdx < len(ieItems.Nodes)-1 {
-		*ieIdx += 1
-		return i.nextValidIssueEdit()
-	}
-	if !ieItems.PageInfo.HasNextPage {
-		return false
-	}
-	querySucc := i.queryIssueEdit()
-	if !querySucc {
-		return false
-	}
-	return i.nextValidIssueEdit()
-}
-
-func (i *iterator) nextValidIssueEdit() bool {
-	// issueEdit.Diff == nil happen if the event is older than early 2018, Github doesn't have
-	// the data before that. Best we can do is to ignore the event.
-	if issueEdit := i.IssueEditValue(); issueEdit.Diff == nil || string(*issueEdit.Diff) == "" {
-		return i.NextIssueEdit()
-	}
-	return true
-}
-
-// IssueEditValue returns the actual issue edit value.
-func (i *iterator) IssueEditValue() userContentEdit {
-	iei := i.currIssueEditIter()
-	return iei.query.Node.Issue.UserContentEdits.Nodes[iei.index]
-}
-
-func (i *iterator) queryIssueEdit() bool {
-	ctx, cancel := context.WithTimeout(i.ctx, defaultTimeout)
-	defer cancel()
-	iei := i.currIssueEditIter()
-	if endCursor := iei.query.Node.Issue.UserContentEdits.PageInfo.EndCursor; endCursor != "" {
-		iei.variables["issueEditBefore"] = endCursor
-	}
-	iei.variables["gqlNodeId"] = i.currIssueGqlNodeId()
-	if err := i.gc.Query(ctx, &iei.query, iei.variables); err != nil {
-		i.err = err
-		return false
-	}
-	issueEditItems := iei.query.Node.Issue.UserContentEdits.Nodes
-	if len(issueEditItems) <= 0 {
-		iei.index = -1
-		return false
-	}
-	// The UserContentEditConnection in the Github API serves its elements in reverse chronological
-	// order. For our purpose we have to reverse the edits.
-	reverseEdits(issueEditItems)
-	iei.index = 0
-	return true
-}
-
-// NextTimelineItem returns true if there exists a next timeline item and advances the iterator
-// by one. It is used to iterate over all the timeline items. Queries to github are made when
-// necessary.
-func (i *iterator) NextTimelineItem() bool {
-	if i.HasError() {
-		return false
-	}
-	tlIter := &i.issueIter.timelineIter[i.issueIter.index]
-	tlIdx := &tlIter.index
-	tlItems := tlIter.query.Node.Issue.TimelineItems
-	if 0 <= *tlIdx && *tlIdx < len(tlItems.Nodes)-1 {
-		*tlIdx += 1
-		return true
-	}
-	if !tlItems.PageInfo.HasNextPage {
-		return false
-	}
-	nextTlItem := i.queryTimeline()
-	return nextTlItem
-}
-
-// TimelineItemValue returns the actual timeline item value.
-func (i *iterator) TimelineItemValue() timelineItem {
-	tli := i.currTimelineIter()
-	return tli.query.Node.Issue.TimelineItems.Nodes[tli.index]
-}
-
-func (i *iterator) queryTimeline() bool {
-	ctx, cancel := context.WithTimeout(i.ctx, defaultTimeout)
-	defer cancel()
-	tli := i.currTimelineIter()
-	if endCursor := tli.query.Node.Issue.TimelineItems.PageInfo.EndCursor; endCursor != "" {
-		tli.variables["timelineAfter"] = endCursor
-	}
-	tli.variables["gqlNodeId"] = i.currIssueGqlNodeId()
-	if err := i.gc.Query(ctx, &tli.query, tli.variables); err != nil {
-		i.err = err
-		return false
-	}
-	i.resetCommentEditVars()
-	timelineItems := &tli.query.Node.Issue.TimelineItems
-	if len(timelineItems.Nodes) <= 0 {
-		tli.index = -1
-		return false
-	}
-	tli.index = 0
-	return true
-}
-
-// NextCommentEdit returns true if there exists a next comment edit and advances the iterator
-// by one. It is used to iterate over all issue edits. Queries to github are made when
-// necessary.
-func (i *iterator) NextCommentEdit() bool {
-	if i.HasError() {
-		return false
-	}
-
-	tmlnVal := i.TimelineItemValue()
-	if tmlnVal.Typename != "IssueComment" {
-		// The timeline iterator does not point to a comment.
-		i.err = errors.New("Call to NextCommentEdit() while timeline item is not a comment")
-		return false
-	}
-
-	cei := i.currCommentEditIter()
-	ceIdx := &cei.index
-	ceItems := &cei.query.Node.IssueComment.UserContentEdits
-	if 0 <= *ceIdx && *ceIdx < len(ceItems.Nodes)-1 {
-		*ceIdx += 1
-		return i.nextValidCommentEdit()
-	}
-	if !ceItems.PageInfo.HasNextPage {
-		return false
-	}
-	querySucc := i.queryCommentEdit()
-	if !querySucc {
-		return false
-	}
-	return i.nextValidCommentEdit()
-}
-
-func (i *iterator) nextValidCommentEdit() bool {
-	// if comment edit diff is a nil pointer or points to an empty string look for next value
-	if commentEdit := i.CommentEditValue(); commentEdit.Diff == nil || string(*commentEdit.Diff) == "" {
-		return i.NextCommentEdit()
-	}
-	return true
-}
-
-// CommentEditValue returns the actual comment edit value.
-func (i *iterator) CommentEditValue() userContentEdit {
-	cei := i.currCommentEditIter()
-	return cei.query.Node.IssueComment.UserContentEdits.Nodes[cei.index]
-}
-
-func (i *iterator) queryCommentEdit() bool {
-	ctx, cancel := context.WithTimeout(i.ctx, defaultTimeout)
-	defer cancel()
-	cei := i.currCommentEditIter()
-
-	if endCursor := cei.query.Node.IssueComment.UserContentEdits.PageInfo.EndCursor; endCursor != "" {
-		cei.variables["commentEditBefore"] = endCursor
-	}
-	tmlnVal := i.TimelineItemValue()
-	if tmlnVal.Typename != "IssueComment" {
-		i.err = errors.New("Call to queryCommentEdit() while timeline item is not a comment")
-		return false
-	}
-	cei.variables["gqlNodeId"] = tmlnVal.IssueComment.Id
-	if err := i.gc.Query(ctx, &cei.query, cei.variables); err != nil {
-		i.err = err
-		return false
-	}
-	ceItems := cei.query.Node.IssueComment.UserContentEdits.Nodes
-	if len(ceItems) <= 0 {
-		cei.index = -1
-		return false
-	}
-	// The UserContentEditConnection in the Github API serves its elements in reverse chronological
-	// order. For our purpose we have to reverse the edits.
-	reverseEdits(ceItems)
-	cei.index = 0
-	return true
-}
-
-func reverseEdits(edits []userContentEdit) {
-	for i, j := 0, len(edits)-1; i < j; i, j = i+1, j-1 {
-		edits[i], edits[j] = edits[j], edits[i]
-	}
-}