Added gspreadsheets module

.gitignore

@@ -15,6 +15,7 @@
 # Misc
 .DS_Store
 gcal/client_secret.json
+gspreadsheets/client_secret.json
 #intellij idea
 .idea/
 

gspreadsheets/client.go

@@ -0,0 +1,145 @@
+/*
+* This butt-ugly code is direct from Google itself
+* https://developers.google.com/sheets/api/quickstart/go
+ */
+
+package gspreadsheets
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"os"
+	"os/user"
+	"path/filepath"
+	"strings"
+
+	"github.com/senorprogrammer/wtf/wtf"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	sheets "google.golang.org/api/sheets/v4"
+)
+
+/* -------------------- Exported Functions -------------------- */
+
+func Fetch() ([]*sheets.ValueRange, error) {
+	ctx := context.Background()
+
+	secretPath, _ := wtf.ExpandHomeDir(Config.UString("wtf.mods.gspreadsheets.secretFile"))
+
+	b, err := ioutil.ReadFile(secretPath)
+	if err != nil {
+		log.Fatalf("Unable to read secretPath. %v", err)
+		return nil, err
+	}
+
+	config, err := google.ConfigFromJSON(b, "https://www.googleapis.com/auth/spreadsheets.readonly")
+
+	if err != nil {
+		log.Fatalf("Unable to get config from JSON. %v", err)
+		return nil, err
+	}
+	client := getClient(ctx, config)
+
+	srv, err := sheets.New(client)
+	if err != nil {
+		log.Fatalf("Unable to get create server. %v", err)
+		return nil, err
+	}
+
+	cells := wtf.ToStrs(Config.UList("wtf.mods.gspreadsheets.cells.addresses"))
+	documentId := Config.UString("wtf.mods.gspreadsheets.sheetId")
+	addresses := strings.Join(cells[:], ";")
+
+	responses := make([]*sheets.ValueRange, len(cells))
+
+	for i := 0; i < len(cells); i++ {
+		resp, err := srv.Spreadsheets.Values.Get(documentId, cells[i]).Do()
+		if err != nil {
+			log.Fatalf("Error fetching cells %s", addresses)
+			return nil, err
+		}
+		responses[i] = resp
+	}
+
+	return responses, err
+}
+
+/* -------------------- Unexported Functions -------------------- */
+
+// getClient uses a Context and Config to retrieve a Token
+// then generate a Client. It returns the generated Client.
+func getClient(ctx context.Context, config *oauth2.Config) *http.Client {
+	cacheFile, err := tokenCacheFile()
+	if err != nil {
+		log.Fatalf("Unable to get path to cached credential file. %v", err)
+	}
+	tok, err := tokenFromFile(cacheFile)
+	if err != nil {
+		tok = getTokenFromWeb(config)
+		saveToken(cacheFile, tok)
+	}
+	return config.Client(ctx, tok)
+}
+
+// getTokenFromWeb uses Config to request a Token.
+// It returns the retrieved Token.
+func getTokenFromWeb(config *oauth2.Config) *oauth2.Token {
+	authURL := config.AuthCodeURL("state-token", oauth2.AccessTypeOffline)
+	fmt.Printf("Go to the following link in your browser then type the "+
+		"authorization code: \n%v\n", authURL)
+
+	var code string
+	if _, err := fmt.Scan(&code); err != nil {
+		log.Fatalf("Unable to read authorization code %v", err)
+	}
+
+	tok, err := config.Exchange(oauth2.NoContext, code)
+	if err != nil {
+		log.Fatalf("Unable to retrieve token from web %v", err)
+	}
+	return tok
+}
+
+// tokenCacheFile generates credential file path/filename.
+// It returns the generated credential path/filename.
+func tokenCacheFile() (string, error) {
+	usr, err := user.Current()
+	if err != nil {
+		return "", err
+	}
+	tokenCacheDir := filepath.Join(usr.HomeDir, ".credentials")
+	os.MkdirAll(tokenCacheDir, 0700)
+	return filepath.Join(tokenCacheDir,
+		url.QueryEscape("spreadsheets-go-quickstart.json")), err
+}
+
+// tokenFromFile retrieves a Token from a given file path.
+// It returns the retrieved Token and any read error encountered.
+func tokenFromFile(file string) (*oauth2.Token, error) {
+	f, err := os.Open(file)
+	if err != nil {
+		return nil, err
+	}
+	t := &oauth2.Token{}
+	err = json.NewDecoder(f).Decode(t)
+	defer f.Close()
+	return t, err
+}
+
+// saveToken uses a file path to create a file and store the
+// token in it.
+func saveToken(file string, token *oauth2.Token) {
+	fmt.Printf("Saving credential file to: %s\n", file)
+	f, err := os.OpenFile(file, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		log.Fatalf("Unable to cache oauth token: %v", err)
+	}
+	defer f.Close()
+
+	json.NewEncoder(f).Encode(token)
+}

gspreadsheets/widget.go

@@ -0,0 +1,56 @@
+package gspreadsheets
+
+import (
+	"fmt"
+
+	"github.com/senorprogrammer/wtf/wtf"
+	"github.com/olebedev/config"
+	sheets "google.golang.org/api/sheets/v4"
+)
+
+// Config is a pointer to the global config object
+var Config *config.Config
+
+type Widget struct {
+	wtf.TextWidget
+}
+
+func NewWidget() *Widget {
+	widget := Widget{
+		TextWidget: wtf.NewTextWidget(" Google Spreadsheets ", "gspreadsheets", false),
+	}
+
+	return &widget
+}
+
+/* -------------------- Exported Functions -------------------- */
+
+func (widget *Widget) Refresh() {
+	if widget.Disabled() {
+		return
+	}
+
+	cells, _ := Fetch()
+
+	widget.UpdateRefreshedAt()
+
+	widget.View.SetText(fmt.Sprintf("%s", widget.contentFrom(cells)))
+}
+
+/* -------------------- Unexported Functions -------------------- */
+
+func (widget *Widget) contentFrom(valueRanges []*sheets.ValueRange) string {
+	if valueRanges == nil {
+		return "error 1"
+	}
+
+	valuesColor := Config.UString("wtf.mods.gspreadsheets.colors.values", "green")
+	res := ""
+
+	cells := wtf.ToStrs(Config.UList("wtf.mods.gspreadsheets.cells.names"))
+	for i := 0; i < len(valueRanges); i++ {
+		res = res + fmt.Sprintf("%s\t[%s]%s\n", cells[i], valuesColor, valueRanges[i].Values[0][0])
+	}
+
+	return res
+}

wtf.go

@@ -16,6 +16,7 @@ import (
 	"github.com/senorprogrammer/wtf/cryptoexchanges/bittrex"
 	"github.com/senorprogrammer/wtf/cryptoexchanges/cryptolive"
 	"github.com/senorprogrammer/wtf/gcal"
+	"github.com/senorprogrammer/wtf/gspreadsheets"
 	"github.com/senorprogrammer/wtf/git"
 	"github.com/senorprogrammer/wtf/github"
 	"github.com/senorprogrammer/wtf/help"
@@ -220,6 +221,7 @@ func makeWidgets(app *tview.Application, pages *tview.Pages) {
 	cmdrunner.Config = Config
 	cryptolive.Config = Config
 	gcal.Config = Config
+	gspreadsheets.Config = Config
 	git.Config = Config
 	github.Config = Config
 	ipinfo.Config = Config