Add migration function stubs

config.yml.sample

@@ -189,16 +189,14 @@ migration:
     # Wheter to enable the trello migrator or not
     enable: false
     # The client id, required for making requests to the trello api
-    # You need to register your vikunja instance at  to get this
-    clientid:
-    # The client secret, also required for making requests to the trello api
-    clientsecret:
+    # You need to register your vikunja instance at https://trello.com/app-key (log in before you visit that link) to get this
+    key:
     # The url where clients are redirected after they authorized Vikunja to access their trello cards.
     # This needs to match the url you entered when registering your Vikunja instance at trello.
     # This is usually the frontend url where the frontend then makes a request to /migration/trello/migrate
     # with the code obtained from the trello api.
-    # Note that the vikunja frontend expects this to be /migrate/trello
-    redirecturl:
+    # Note that the vikunja frontend expects this to end on /migrate/trello.
+    redirecturl: <frontend url>/migrate/trello
 
 avatar:
   # When using gravatar, this is the duration in seconds until a cached gravatar user avatar expires

go.mod

@@ -21,6 +21,7 @@ require (
 	code.vikunja.io/web v0.0.0-20200809154828-8767618f181f
 	dmitri.shuralyov.com/go/generated v0.0.0-20170818220700-b1254a446363 // indirect
 	gitea.com/xorm/xorm-redis-cache v0.2.0
+	github.com/adlio/trello v1.8.0
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
 	github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef
 	github.com/beevik/etree v1.1.0 // indirect

go.sum

@@ -74,6 +74,8 @@ github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqR
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
+github.com/adlio/trello v1.8.0 h1:VU/1zwzuRzATsFC8WiK4f8R0HHQPWpf2H658KEchsmA=
+github.com/adlio/trello v1.8.0/go.mod h1:l2068AhUuUuQ9Vsb95ECMueHThYyAj4e85lWPmr2/LE=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=

pkg/config/config.go

@@ -119,8 +119,7 @@ const (
 	MigrationTodoistClientSecret    Key = `migration.todoist.clientsecret`
 	MigrationTodoistRedirectURL     Key = `migration.todoist.redirecturl`
 	MigrationTrelloEnable           Key = `migration.trello.enable`
-	MigrationTrelloClientID         Key = `migration.trello.clientid`
-	MigrationTrelloClientSecret     Key = `migration.trello.clientsecret`
+	MigrationTrelloKey              Key = `migration.trello.key`
 	MigrationTrelloRedirectURL      Key = `migration.trello.redirecturl`
 
 	CorsEnable  Key = `cors.enable`
@@ -346,6 +345,10 @@ func InitConfig() {
 		AuthOpenIDRedirectURL.Set(ServiceFrontendurl.GetString() + "auth/openid/")
 	}
 
+	if MigrationTrelloRedirectURL.GetString() == "" {
+		MigrationTrelloRedirectURL.Set(ServiceFrontendurl.GetString() + "migrate/trello")
+	}
+
 	log.Printf("Using config file: %s", viper.ConfigFileUsed())
 }
 

pkg/modules/migration/trello/trello.go

@@ -16,9 +16,36 @@
 
 package trello
 
-import "code.vikunja.io/api/pkg/user"
+import (
+	"code.vikunja.io/api/pkg/config"
+	"code.vikunja.io/api/pkg/log"
+	"code.vikunja.io/api/pkg/models"
+	"code.vikunja.io/api/pkg/modules/migration"
+	"code.vikunja.io/api/pkg/user"
+	"github.com/adlio/trello"
+)
 
 type Migration struct {
+	Token string `json:"token"`
+}
+
+var trelloColorMap map[string]string
+
+func init() {
+	trelloColorMap = make(map[string]string, 10)
+	trelloColorMap = map[string]string{
+		"green":       "61bd4f",
+		"yellow":      "f2d600",
+		"orange":      "ff9f1a",
+		"red":         "eb5a46",
+		"sky":         "00c2e0",
+		"lime":        "51e898",
+		"purple":      "c377e0",
+		"blue":        "0079bf",
+		"pink":        "ff78cb",
+		"black":       "344563",
+		"transparent": "", // Empty
+	}
 }
 
 // Name is used to get the name of the trello migration - we're using the docs here to annotate the status route.
@@ -44,7 +71,68 @@ func (m *Migration) Name() string {
 // @Failure 500 {object} models.Message "Internal server error"
 // @Router /migration/trello/auth [get]
 func (m *Migration) AuthURL() string {
-	panic("implement me")
+	return "https://trello.com/1/authorize" +
+		"?expiration=1hour" +
+		"&scope=read" +
+		"&callback_method=fragment" +
+		"&response_type=token" +
+		"&name=Vikunja%20Migration" +
+		"&key=" + config.MigrationTrelloKey.GetString() +
+		"&return_url=" + config.MigrationTrelloRedirectURL.GetString()
+}
+
+func getTrelloData(token string) (trelloData []*trello.Board, err error) {
+	client := trello.NewClient(config.MigrationTrelloKey.GetString(), token)
+	client.Logger = log.GetLogger()
+
+	trelloData, err = client.GetMyBoards(trello.Defaults())
+	if err != nil {
+		return
+	}
+
+	for _, board := range trelloData {
+		board.Lists, err = board.GetLists(trello.Defaults())
+		if err != nil {
+			return
+		}
+
+		listMap := make(map[string]*trello.List, len(board.Lists))
+		for _, list := range board.Lists {
+			listMap[list.ID] = list
+		}
+
+		cards, err := board.GetCards(trello.Defaults())
+		if err != nil {
+			return nil, err
+		}
+
+		for _, card := range cards {
+			list, exists := listMap[card.IDList]
+			if !exists {
+				continue
+			}
+
+			list.Cards = append(list.Cards, card)
+		}
+	}
+
+	return
+}
+
+// Converts all previously obtained data from trello into the vikunja format.
+// `trelloData` should contain all boards with their lists and cards respectively.
+func convertTrelloDataToVikunja(trelloData []*trello.Board) (fullVikunjaHierachie []*models.NamespaceWithLists, err error) {
+
+	// Archived Board (closed)
+	// Backgrounds
+
+	// Labels
+	// Checklists (as markdown in description)
+	// Due Date
+	// Reminders for due dates
+	// Attachments
+
+	return
 }
 
 // Migrate gets all tasks from trello for a user and puts them into vikunja
@@ -54,10 +142,37 @@ func (m *Migration) AuthURL() string {
 // @Accept json
 // @Produce json
 // @Security JWTKeyAuth
-// @Param migrationCode body trello.Migration true "The auth code previously obtained from the auth url. See the docs for /migration/trello/auth."
+// @Param migrationCode body trello.Migration true "The auth token previously obtained from the auth url. See the docs for /migration/trello/auth."
 // @Success 200 {object} models.Message "A message telling you everything was migrated successfully."
 // @Failure 500 {object} models.Message "Internal server error"
 // @Router /migration/trello/migrate [post]
-func (m *Migration) Migrate(user *user.User) error {
-	panic("implement me")
+func (m *Migration) Migrate(u *user.User) (err error) {
+	log.Debugf("[Trello Migration] Starting migration for user %d", u.ID)
+	log.Debugf("[Trello Migration] Getting all trello data for user %d", u.ID)
+
+	trelloData, err := getTrelloData(m.Token)
+	if err != nil {
+		return
+	}
+
+	log.Debugf("[Trello Migration] Got all trello data for user %d", u.ID)
+	log.Debugf("[Trello Migration] Start converting trello data for user %d", u.ID)
+
+	fullVikunjaHierachie, err := convertTrelloDataToVikunja(trelloData)
+	if err != nil {
+		return
+	}
+
+	log.Debugf("[Trello Migration] Done migrating trello data for user %d", u.ID)
+	log.Debugf("[Trello Migration] Start inserting trello data for user %d", u.ID)
+
+	err = migration.InsertFromStructure(fullVikunjaHierachie, u)
+	if err != nil {
+		return
+	}
+
+	log.Debugf("[Trello Migration] Done inserting trello data for user %d", u.ID)
+	log.Debugf("[Trello Migration] Migration done for user %d", u.ID)
+
+	return nil
 }