api.go
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api.go
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	package api

	import (
	"fmt"
	"path/filepath"

	"github.com/atotto/clipboard"
	"github.com/writeas/web-core/posts"
	"github.com/writeas/writeas-cli/config"
	"github.com/writeas/writeas-cli/fileutils"
	"github.com/writeas/writeas-cli/log"
	writeas "go.code.as/writeas.v2"
	cli "gopkg.in/urfave/cli.v1"
	)

	func client(userAgent string, tor bool) *writeas.Client {
	var client *writeas.Client
	if tor {
	client = writeas.NewTorClient(TorPort)
	} else {
	if config.IsDev() {
	client = writeas.NewDevClient()
	} else {
	client = writeas.NewClient()
	}
	}
	client.UserAgent = userAgent

	return client
	}

	func NewClient(c cli.Context, authRequired bool) (writeas.Client, error) {
	var client *writeas.Client
	if config.IsTor(c) {
	client = writeas.NewTorClient(TorPort)
	} else {
	if config.IsDev() {
	client = writeas.NewDevClient()
	} else {
	client = writeas.NewClient()
	}
	}
	client.UserAgent = config.UserAgent(c)
	// TODO: load user into var shared across the app
	u, _ := config.LoadUser(config.UserDataDir(c.App.ExtraInfo()["configDir"]))
	if u != nil {
	client.SetToken(u.AccessToken)
	} else if authRequired {
	return nil, fmt.Errorf("Not currently logged in. Authenticate with: writeas auth <username>")
	}

	return client, nil
	}

	// DoFetch retrieves the Write.as post with the given friendlyID,
	// optionally via the Tor hidden service.
	func DoFetch(friendlyID, ua string, tor bool) error {
	cl := client(ua, tor)

	p, err := cl.GetPost(friendlyID)
	if err != nil {
	return err
	}

	if p.Title != "" {
	fmt.Printf("# %s\n\n", string(p.Title))
	}
	fmt.Printf("%s\n", string(p.Content))
	return nil
	}

	// DoFetchPosts retrieves all remote posts for the
	// authenticated user
	func DoFetchPosts(c *cli.Context) ([]writeas.Post, error) {
	cl, err := NewClient(c, true)
	if err != nil {
	return nil, err
	}

	posts, err := cl.GetUserPosts()
	if err != nil {
	return nil, err
	}

	return *posts, nil
	}

	// DoPost creates a Write.as post, returning an error if it was
	// unsuccessful.
	func DoPost(c cli.Context, post []byte, font string, encrypt, tor, code bool) (writeas.Post, error) {
	cl, _ := NewClient(c, false)

	pp := &writeas.PostParams{
	Font: config.GetFont(code, font),
	Collection: config.Collection(c),
	}
	pp.Title, pp.Content = posts.ExtractTitle(string(post))
	if lang := config.Language(c, true); lang != "" {
	pp.Language = &lang
	}
	p, err := cl.CreatePost(pp)
	if err != nil {
	return nil, fmt.Errorf("Unable to post: %v", err)
	}

	var url string
	if p.Collection != nil {
	url = p.Collection.URL + p.Slug
	} else {
	if tor {
	url = config.TorBaseURL
	} else if config.IsDev() {
	url = config.DevBaseURL
	} else {
	url = config.WriteasBaseURL
	}
	url += "/" + p.ID
	// Output URL in requested format
	if c.Bool("md") {
	url += ".md"
	}
	}

	if cl.Token() == "" {
	// Store post locally, since we're not authenticated
	AddPost(c, p.ID, p.Token)
	}

	// Copy URL to clipboard
	err = clipboard.WriteAll(string(url))
	if err != nil {
	log.Errorln("writeas: Didn't copy to clipboard: %s", err)
	} else {
	log.Info(c, "Copied to clipboard.")
	}

	// Output URL
	fmt.Printf("%s\n", url)

	return p, nil
	}

	// DoFetchCollections retrieves a list of the currently logged in users
	// collections.
	func DoFetchCollections(c *cli.Context) ([]RemoteColl, error) {
	cl, err := NewClient(c, true)
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("could not create new client: %v", err)
	}
	return nil, fmt.Errorf("Couldn't create new client")
	}

	colls, err := cl.GetUserCollections()
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("failed fetching user collections: %v", err)
	}
	return nil, fmt.Errorf("Couldn't get user collections")
	}

	out := make([]RemoteColl, len(*colls))

	for i, c := range *colls {
	coll := RemoteColl{
	Alias: c.Alias,
	Title: c.Title,
	URL: c.URL,
	}
	out[i] = coll
	}

	return out, nil
	}

	// DoUpdate updates the given post on Write.as.
	func DoUpdate(c *cli.Context, post []byte, friendlyID, token, font string, tor, code bool) error {
	cl, _ := NewClient(c, false)

	params := writeas.PostParams{}
	params.Title, params.Content = posts.ExtractTitle(string(post))
	if lang := config.Language(c, false); lang != "" {
	params.Language = &lang
	}
	if code \|\| font != "" {
	params.Font = config.GetFont(code, font)
	}

	_, err := cl.UpdatePost(friendlyID, token, &params)
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("Problem updating: %v", err)
	}
	return fmt.Errorf("Post doesn't exist, or bad edit token given.")
	}

	if tor {
	log.Info(c, "Post updated via hidden service.")
	} else {
	log.Info(c, "Post updated.")
	}
	return nil
	}

	// DoDelete deletes the given post on Write.as, and removes any local references
	func DoDelete(c *cli.Context, friendlyID, token string, tor bool) error {
	cl, _ := NewClient(c, false)

	err := cl.DeletePost(friendlyID, token)
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("Problem deleting: %v", err)
	}
	return fmt.Errorf("Post doesn't exist, or bad edit token given.")
	}

	if tor {
	log.Info(c, "Post deleted from hidden service.")
	} else {
	log.Info(c, "Post deleted.")
	}
	removePost(c.App.ExtraInfo()["configDir"], friendlyID)

	return nil
	}

	func DoLogIn(c *cli.Context, username, password string) error {
	cl := client(config.UserAgent(c), config.IsTor(c))

	u, err := cl.LogIn(username, password)
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("Problem logging in: %v", err)
	}
	return err
	}

	err = config.SaveUser(config.UserDataDir(c.App.ExtraInfo()["configDir"]), u)
	if err != nil {
	return err
	}
	log.Info(c, "Logged in as %s.\n", u.User.Username)
	return nil
	}

	func DoLogOut(c *cli.Context) error {
	cl, err := NewClient(c, true)
	if err != nil {
	return err
	}

	err = cl.LogOut()
	if err != nil {
	if config.Debug() {
	log.ErrorlnQuit("Problem logging out: %v", err)
	}
	return err
	}

	// Delete local user data
	err = fileutils.DeleteFile(filepath.Join(config.UserDataDir(c.App.ExtraInfo()["configDir"]), config.UserFile))
	if err != nil {
	return err
	}

	return nil
	}

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