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sheets.go
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sheets.go
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package google
import (
"encoding/json"
"fmt"
"log/syslog"
"golang.org/x/net/context"
"golang.org/x/oauth2/google"
"google.golang.org/api/option"
"google.golang.org/api/sheets/v4"
"github.com/silinternational/personnel-sync/v6/internal"
)
const DefaultSheetName = "Sheet1"
type GoogleSheets struct {
DestinationConfig internal.DestinationConfig
SourceConfig internal.SourceConfig
GoogleConfig GoogleConfig
Service *sheets.Service
SheetsSyncSet SheetsSyncSet
}
type SheetsSyncSet struct {
SheetID string
SheetName string
CompareAttribute string
}
func NewGoogleSheetsDestination(destinationConfig internal.DestinationConfig) (internal.Destination, error) {
s, err := readConfig(destinationConfig.ExtraJSON)
if err != nil {
return nil, fmt.Errorf("error reading GoogleSheets destination config: %s", err)
}
s.DestinationConfig = destinationConfig
return &s, nil
}
func NewGoogleSheetsSource(sourceConfig internal.SourceConfig) (internal.Source, error) {
s, err := readConfig(sourceConfig.ExtraJSON)
if err != nil {
return nil, fmt.Errorf("error reading GoogleSheets source config: %s", err)
}
s.SourceConfig = sourceConfig
return &s, nil
}
func readConfig(data []byte) (GoogleSheets, error) {
var s GoogleSheets
err := json.Unmarshal(data, &s.GoogleConfig)
if err != nil {
return s, fmt.Errorf("error unmarshaling GoogleConfig: %s", err)
}
s.Service, err = initSheetsService(
s.GoogleConfig.GoogleAuth,
s.GoogleConfig.DelegatedAdminEmail,
sheets.SpreadsheetsScope,
)
if err != nil {
return s, fmt.Errorf("error initializing Google Sheets service: %s", err)
}
return s, nil
}
func initSheetsService(auth GoogleAuth, adminEmail string, scopes ...string) (*sheets.Service, error) {
googleAuthJson, err := json.Marshal(auth)
if err != nil {
return nil, fmt.Errorf("unable to marshal google auth data into json, error: %s", err.Error())
}
config, err := google.JWTConfigFromJSON(googleAuthJson, scopes...)
if err != nil {
return nil, fmt.Errorf("unable to parse client secret file to config, error: %s", err)
}
config.Subject = adminEmail
ctx := context.Background()
svc, err := sheets.NewService(ctx, option.WithHTTPClient(config.Client(ctx)))
if err != nil {
return nil, fmt.Errorf("unable to create sheets service, error: %s", err)
}
return svc, nil
}
func (g *GoogleSheets) ForSet(syncSetJson json.RawMessage) error {
var syncSetConfig SheetsSyncSet
err := json.Unmarshal(syncSetJson, &syncSetConfig)
if err != nil {
return err
}
g.SheetsSyncSet = syncSetConfig
// Defaults
if g.SheetsSyncSet.SheetName == "" {
g.SheetsSyncSet.SheetName = DefaultSheetName
}
return nil
}
func (g *GoogleSheets) ListUsers(desiredAttrs []string) ([]internal.Person, error) {
if g.DestinationConfig.Type != "" {
// if this sheet is a destination, don't return the list of users since we don't have logic to do incremental
// updates to the sheet
return nil, nil
}
sheetData, err := g.readSheet()
if err != nil {
return nil, fmt.Errorf("googleSheets ListUsers error %w", err)
}
return getPersonsFromSheetData(sheetData, desiredAttrs, g.SheetsSyncSet.CompareAttribute), nil
}
func getPersonsFromSheetData(sheetData [][]any, desiredAttrs []string, compareAttr string) []internal.Person {
header := map[int]string{}
if len(sheetData) < 1 {
return []internal.Person{}
}
attrMap := make(map[string]bool, len(desiredAttrs))
for _, a := range desiredAttrs {
attrMap[a] = true
}
p := make([]internal.Person, len(sheetData)-1)
for i, row := range sheetData {
if i == 0 {
for j, cellValue := range row {
header[j] = cellValue.(string)
}
continue
}
p[i-1].Attributes = map[string]string{}
for j, cellValue := range row {
if attrMap[header[j]] {
p[i-1].Attributes[header[j]] = cellValue.(string)
if header[j] == compareAttr {
p[i-1].CompareValue = cellValue.(string)
}
}
}
}
return p
}
func (g *GoogleSheets) ApplyChangeSet(
changes internal.ChangeSet,
eventLog chan<- internal.EventLogItem,
) internal.ChangeResults {
if g.DestinationConfig.DisableAdd || g.DestinationConfig.DisableDelete || g.DestinationConfig.DisableUpdate {
eventLog <- internal.EventLogItem{
Level: syslog.LOG_INFO,
Message: fmt.Sprintf("ApplyChangeSet Sync is disabled, no action taken"),
}
return internal.ChangeResults{}
}
sheetData, err := g.readSheet()
if err != nil {
eventLog <- internal.EventLogItem{
Level: syslog.LOG_ALERT,
Message: fmt.Sprintf("unable to read sheet, error: %v", err),
}
return internal.ChangeResults{}
}
if err := g.clearSheet(sheetData); err != nil {
eventLog <- internal.EventLogItem{
Level: syslog.LOG_ALERT,
Message: fmt.Sprintf("unable to clear sheet, error: %v", err),
}
return internal.ChangeResults{}
}
if err := g.updateSheet(getHeaderFromSheetData(sheetData), changes.Create); err != nil {
eventLog <- internal.EventLogItem{
Level: syslog.LOG_ALERT,
Message: fmt.Sprintf("unable to update sheet, error: %v", err),
}
return internal.ChangeResults{}
}
return internal.ChangeResults{Created: uint64(len(changes.Create))}
}
func (g *GoogleSheets) readSheet() ([][]any, error) {
readRange := fmt.Sprintf("%s!A1:ZZ", g.SheetsSyncSet.SheetName)
resp, err := g.Service.Spreadsheets.Values.Get(g.SheetsSyncSet.SheetID, readRange).Do()
if err != nil {
return nil, fmt.Errorf("unable to retrieve data from sheet '%s', error: %v", g.SheetsSyncSet.SheetName, err)
}
if len(resp.Values) < 1 {
return nil, fmt.Errorf("no header row found in sheet")
}
return resp.Values, nil
}
func getHeaderFromSheetData(sheetData [][]any) map[int]string {
if len(sheetData) < 1 {
return map[int]string{}
}
header := make(map[int]string, len(sheetData[0]))
for i, v := range sheetData[0] {
field := fmt.Sprintf("%v", v)
header[i] = field
}
return header
}
func (g *GoogleSheets) clearSheet(data [][]any) error {
for i, row := range data {
if i == 0 {
continue
}
for j := range row {
data[i][j] = ""
}
}
v := &sheets.ValueRange{
Values: data,
}
updateRange := fmt.Sprintf("%s!A1", g.SheetsSyncSet.SheetName)
_, err := g.Service.Spreadsheets.Values.
Update(g.SheetsSyncSet.SheetID, updateRange, v).
ValueInputOption("RAW").Do()
if err != nil {
return fmt.Errorf("unable to clear sheet, error: %v", err)
}
return nil
}
func (g *GoogleSheets) updateSheet(header map[int]string, persons []internal.Person) error {
table := makeSheetDataFromPersons(header, persons)
v := &sheets.ValueRange{
Values: table,
}
updateRange := fmt.Sprintf("%s!A2:ZZ", g.SheetsSyncSet.SheetName)
_, err := g.Service.Spreadsheets.Values.
Update(g.SheetsSyncSet.SheetID, updateRange, v).
ValueInputOption("RAW").Do()
if err != nil {
return fmt.Errorf("unable to update sheet, error: %v", err)
}
return nil
}
func makeSheetDataFromPersons(header map[int]string, persons []internal.Person) [][]any {
if len(header) < 1 {
return [][]any{}
}
sheetData := make([][]any, len(persons))
for i, person := range persons {
row := make([]any, len(header))
for j := range row {
row[j] = person.Attributes[header[j]]
}
sheetData[i] = row
}
return sheetData
}