aboutsummaryrefslogtreecommitdiffstats
path: root/bridge/gitlab/import.go
blob: 4eeb381352c78d4a00a1dbc289a5bd190a1abdd5 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
package gitlab

import (
	"fmt"
	"strconv"
	"time"

	"github.com/xanzy/go-gitlab"

	"github.com/MichaelMure/git-bug/bridge/core"
	"github.com/MichaelMure/git-bug/bug"
	"github.com/MichaelMure/git-bug/cache"
	"github.com/MichaelMure/git-bug/identity"
	"github.com/MichaelMure/git-bug/util/text"
)

const (
	keyGitlabLogin = "gitlab-login"
)

type gitlabImporter struct {
	conf core.Configuration

	// iterator
	iterator *iterator

	// number of imported issues
	importedIssues int

	// number of imported identities
	importedIdentities int
}

func (gi *gitlabImporter) Init(conf core.Configuration) error {
	gi.conf = conf
	return nil
}

func (gi *gitlabImporter) ImportAll(repo *cache.RepoCache, since time.Time) error {
	gi.iterator = NewIterator(gi.conf[keyProjectID], gi.conf[keyToken], since)

	// Loop over all matching issues
	for gi.iterator.NextIssue() {
		issue := gi.iterator.IssueValue()
		fmt.Printf("importing issue: %v\n", issue.Title)

		// create issue
		b, err := gi.ensureIssue(repo, issue)
		if err != nil {
			return fmt.Errorf("issue creation: %v", err)
		}

		// Loop over all notes
		for gi.iterator.NextNote() {
			note := gi.iterator.NoteValue()
			if err := gi.ensureNote(repo, b, note); err != nil {
				return fmt.Errorf("note creation: %v", err)
			}
		}

		// Loop over all label events
		for gi.iterator.NextLabelEvent() {
			labelEvent := gi.iterator.LabelEventValue()
			if err := gi.ensureLabelEvent(repo, b, labelEvent); err != nil {
				return fmt.Errorf("label event creation: %v", err)
			}

		}

		// commit bug state
		if err := b.CommitAsNeeded(); err != nil {
			return fmt.Errorf("bug commit: %v", err)
		}
	}

	if err := gi.iterator.Error(); err != nil {
		fmt.Printf("import error: %v\n", err)
		return err
	}

	fmt.Printf("Successfully imported %d issues and %d identities from Gitlab\n", gi.importedIssues, gi.importedIdentities)
	return nil
}

func (gi *gitlabImporter) ensureIssue(repo *cache.RepoCache, issue *gitlab.Issue) (*cache.BugCache, error) {
	// ensure issue author
	author, err := gi.ensurePerson(repo, issue.Author.ID)
	if err != nil {
		return nil, err
	}

	// resolve bug
	b, err := repo.ResolveBugCreateMetadata(keyGitlabUrl, issue.WebURL)
	if err != nil && err != bug.ErrBugNotExist {
		return nil, err
	}

	if err == bug.ErrBugNotExist {
		cleanText, err := text.Cleanup(string(issue.Description))
		if err != nil {
			return nil, err
		}

		// create bug
		b, _, err = repo.NewBugRaw(
			author,
			issue.CreatedAt.Unix(),
			issue.Title,
			cleanText,
			nil,
			map[string]string{
				keyOrigin:    target,
				keyGitlabId:  parseID(issue.ID),
				keyGitlabUrl: issue.WebURL,
			},
		)

		if err != nil {
			return nil, err
		}

		// importing a new bug
		gi.importedIssues++

		return b, nil
	}

	return nil, nil
}

func (gi *gitlabImporter) ensureNote(repo *cache.RepoCache, b *cache.BugCache, note *gitlab.Note) error {
	id := parseID(note.ID)

	hash, err := b.ResolveOperationWithMetadata(keyGitlabId, id)
	if err != cache.ErrNoMatchingOp {
		return err
	}

	// ensure issue author
	author, err := gi.ensurePerson(repo, note.Author.ID)
	if err != nil {
		return err
	}

	noteType, body := GetNoteType(note)
	switch noteType {
	case NOTE_CLOSED:
		_, err = b.CloseRaw(
			author,
			note.CreatedAt.Unix(),
			map[string]string{
				keyGitlabId: id,
			},
		)
		return err

	case NOTE_REOPENED:
		_, err = b.OpenRaw(
			author,
			note.CreatedAt.Unix(),
			map[string]string{
				keyGitlabId: id,
			},
		)
		return err

	case NOTE_DESCRIPTION_CHANGED:
		issue := gi.iterator.IssueValue()

		// since gitlab doesn't provide the issue history
		// we should check for "changed the description" notes and compare issue texts

		if issue.Description != b.Snapshot().Comments[0].Message {
			// comment edition
			_, err = b.EditCommentRaw(
				author,
				note.UpdatedAt.Unix(),
				target,
				issue.Description,
				map[string]string{
					keyGitlabId:  id,
					keyGitlabUrl: "",
				},
			)

			return err

		}

	case NOTE_COMMENT:

		cleanText, err := text.Cleanup(body)
		if err != nil {
			return err
		}

		// if we didn't import the comment
		if err == cache.ErrNoMatchingOp {

			// add comment operation
			_, err = b.AddCommentRaw(
				author,
				note.CreatedAt.Unix(),
				cleanText,
				nil,
				map[string]string{
					keyGitlabId:  id,
					keyGitlabUrl: "",
				},
			)

			return err
		}

		// if comment was already exported

		// if note wasn't updated
		if note.UpdatedAt.Equal(*note.CreatedAt) {
			return nil
		}

		// search for last comment update
		timeline, err := b.Snapshot().SearchTimelineItem(hash)
		if err != nil {
			return err
		}

		item, ok := timeline.(*bug.AddCommentTimelineItem)
		if !ok {
			return fmt.Errorf("expected add comment time line")
		}

		// compare local bug comment with the new note body
		if item.Message != cleanText {
			// comment edition
			_, err = b.EditCommentRaw(
				author,
				note.UpdatedAt.Unix(),
				target,
				cleanText,
				map[string]string{
					// no metadata unique metadata to store
					keyGitlabId:  "",
					keyGitlabUrl: "",
				},
			)

			return err
		}

		return nil

	case NOTE_TITLE_CHANGED:

		_, err = b.SetTitleRaw(
			author,
			note.CreatedAt.Unix(),
			body,
			map[string]string{
				keyGitlabId:  id,
				keyGitlabUrl: "",
			},
		)

		return err

	default:
		// non handled note types

		return nil
	}

	return nil
}

func (gi *gitlabImporter) ensureLabelEvent(repo *cache.RepoCache, b *cache.BugCache, labelEvent *gitlab.LabelEvent) error {
	_, err := b.ResolveOperationWithMetadata(keyGitlabId, parseID(labelEvent.ID))
	if err != cache.ErrNoMatchingOp {
		return err
	}

	// ensure issue author
	author, err := gi.ensurePerson(repo, labelEvent.User.ID)
	if err != nil {
		return err
	}

	switch labelEvent.Action {
	case "add":
		_, err = b.ForceChangeLabelsRaw(
			author,
			labelEvent.CreatedAt.Unix(),
			[]string{labelEvent.Label.Name},
			nil,
			map[string]string{
				keyGitlabId: parseID(labelEvent.ID),
			},
		)

	case "remove":
		_, err = b.ForceChangeLabelsRaw(
			author,
			labelEvent.CreatedAt.Unix(),
			nil,
			[]string{labelEvent.Label.Name},
			map[string]string{
				keyGitlabId: parseID(labelEvent.ID),
			},
		)

	default:
		panic("unexpected label event action")
	}

	return err
}

func (gi *gitlabImporter) ensurePerson(repo *cache.RepoCache, id int) (*cache.IdentityCache, error) {
	// Look first in the cache
	i, err := repo.ResolveIdentityImmutableMetadata(keyGitlabId, strconv.Itoa(id))
	if err == nil {
		return i, nil
	}
	if _, ok := err.(identity.ErrMultipleMatch); ok {
		return nil, err
	}

	// importing a new identity
	gi.importedIdentities++

	client := buildClient(gi.conf["token"])

	user, _, err := client.Users.GetUser(id)
	if err != nil {
		return nil, err
	}

	return repo.NewIdentityRaw(
		user.Name,
		user.PublicEmail,
		user.Username,
		user.AvatarURL,
		map[string]string{
			keyGitlabId:    strconv.Itoa(id),
			keyGitlabLogin: user.Username,
		},
	)
}

func parseID(id int) string {
	return fmt.Sprintf("%d", id)
}