Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/jobs/migrations/advanced_permissions_phase_2.go

@@ -0,0 +1,112 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package migrations
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+)
+
+type AdvancedPermissionsPhase2Progress struct {
+	CurrentTable  string `json:"current_table"`
+	LastTeamId    string `json:"last_team_id"`
+	LastChannelId string `json:"last_channel_id"`
+	LastUserId    string `json:"last_user"`
+}
+
+func (p *AdvancedPermissionsPhase2Progress) ToJSON() string {
+	b, _ := json.Marshal(p)
+	return string(b)
+}
+
+func AdvancedPermissionsPhase2ProgressFromJSON(data io.Reader) *AdvancedPermissionsPhase2Progress {
+	var o *AdvancedPermissionsPhase2Progress
+	err := json.NewDecoder(data).Decode(&o)
+	if err != nil {
+		mlog.Warn("Error decoding advanced permissions phase 2 progress", mlog.Err(err))
+	}
+	return o
+}
+
+func (p *AdvancedPermissionsPhase2Progress) IsValid() bool {
+	if !model.IsValidId(p.LastChannelId) {
+		return false
+	}
+
+	if !model.IsValidId(p.LastTeamId) {
+		return false
+	}
+
+	if !model.IsValidId(p.LastUserId) {
+		return false
+	}
+
+	switch p.CurrentTable {
+	case "TeamMembers":
+	case "ChannelMembers":
+	default:
+		return false
+	}
+
+	return true
+}
+
+func (worker *Worker) runAdvancedPermissionsPhase2Migration(lastDone string) (bool, string, *model.AppError) {
+	var progress *AdvancedPermissionsPhase2Progress
+	if lastDone == "" {
+		// Haven't started the migration yet.
+		progress = &AdvancedPermissionsPhase2Progress{
+			CurrentTable:  "TeamMembers",
+			LastChannelId: strings.Repeat("0", 26),
+			LastTeamId:    strings.Repeat("0", 26),
+			LastUserId:    strings.Repeat("0", 26),
+		}
+	} else {
+		err := json.NewDecoder(strings.NewReader(lastDone)).Decode(&progress)
+		if err != nil {
+			return false, "", model.NewAppError("MigrationsWorker.runAdvancedPermissionsPhase2Migration", "migrations.worker.run_advanced_permissions_phase_2_migration.invalid_progress", map[string]any{"lastDone": lastDone}, "", http.StatusInternalServerError).Wrap(err)
+		}
+		if !progress.IsValid() {
+			return false, "", model.NewAppError("MigrationsWorker.runAdvancedPermissionsPhase2Migration", "migrations.worker.run_advanced_permissions_phase_2_migration.invalid_progress", map[string]any{"progress": progress.ToJSON()}, "", http.StatusInternalServerError)
+		}
+	}
+
+	if progress.CurrentTable == "TeamMembers" {
+		// Run a TeamMembers migration batch.
+		result, err := worker.store.Team().MigrateTeamMembers(progress.LastTeamId, progress.LastUserId)
+		if err != nil {
+			return false, progress.ToJSON(), model.NewAppError("MigrationsWorker.runAdvancedPermissionsPhase2Migration", "app.team.migrate_team_members.update.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		}
+		if result == nil {
+			// We haven't progressed. That means that we've reached the end of this stage of the migration, and should now advance to the next stage.
+			progress.LastUserId = strings.Repeat("0", 26)
+			progress.CurrentTable = "ChannelMembers"
+			return false, progress.ToJSON(), nil
+		}
+
+		progress.LastTeamId = result["TeamId"]
+		progress.LastUserId = result["UserId"]
+	} else if progress.CurrentTable == "ChannelMembers" {
+		// Run a ChannelMembers migration batch.
+		data, err := worker.store.Channel().MigrateChannelMembers(progress.LastChannelId, progress.LastUserId)
+		if err != nil {
+			return false, progress.ToJSON(), model.NewAppError("MigrationsWorker.runAdvancedPermissionsPhase2Migration", "app.channel.migrate_channel_members.select.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		}
+		if data == nil {
+			// We haven't progressed. That means we've reached the end of this final stage of the migration.
+
+			return true, progress.ToJSON(), nil
+		}
+
+		progress.LastChannelId = data["ChannelId"]
+		progress.LastUserId = data["UserId"]
+	}
+
+	return false, progress.ToJSON(), nil
+}