Add poll support

Currenlty only voting is possible.

mastodon/poll.go

@@ -0,0 +1,38 @@
+package mastodon
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+type Poll struct {
+	ID          string       `json:"id"`
+	ExpiresAt   time.Time    `json:"expires_at"`
+	Expired     bool         `json:"expired"`
+	Multiple    bool         `json:"multiple"`
+	VotesCount  int64        `json:"votes_count"`
+	Voted       bool         `json:"voted"`
+	Emojis      []Emoji      `json:"emojis"`
+	Options     []PollOption `json:"options"`
+}
+
+// Poll hold information for a mastodon poll option.
+type PollOption struct {
+	Title      string `json:"title"`
+	VotesCount int64  `json:"votes_count"`
+}
+
+// Vote submits a vote with given choices to the poll specified by id.
+func (c *Client) Vote(ctx context.Context, id string, choices []string) (*Poll, error) {
+	var poll Poll
+	params := make(url.Values)
+	params["choices[]"] = choices
+	err := c.doAPI(ctx, http.MethodPost, fmt.Sprintf("/api/v1/polls/%s/votes", id), params, &poll, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &poll, nil
+}

mastodon/status.go

@@ -47,6 +47,7 @@ type Status struct {
 	Application        Application  `json:"application"`
 	Language           string       `json:"language"`
 	Pinned             interface{}  `json:"pinned"`
+	Poll               *Poll        `json:"poll"`
 
 	// Custom fields
 	Pleroma       StatusPleroma          `json:"pleroma"`

renderer/renderer.go

@@ -43,6 +43,7 @@ func NewRenderer(templateGlobPattern string) (r *renderer, err error) {
 		"StatusContentFilter":     StatusContentFilter,
 		"DisplayInteractionCount": DisplayInteractionCount,
 		"TimeSince":               TimeSince,
+		"TimeUntil":               TimeUntil,
 		"FormatTimeRFC3339":       FormatTimeRFC3339,
 		"FormatTimeRFC822":        FormatTimeRFC822,
 		"WithContext":             WithContext,
@@ -158,8 +159,7 @@ func DisplayInteractionCount(c int64) string {
 	return ""
 }
 
-func TimeSince(t time.Time) string {
+func DurToStr(dur time.Duration) string {
-	dur := time.Since(t)
 	s := dur.Seconds()
 	if s < 60 {
 		return strconv.Itoa(int(s)) + "s"
@@ -184,6 +184,14 @@ func TimeSince(t time.Time) string {
 	return strconv.Itoa(int(y)) + "y"
 }
 
+func TimeSince(t time.Time) string {
+	return DurToStr(time.Since(t))
+}
+
+func TimeUntil(t time.Time) string {
+	return DurToStr(time.Until(t))
+}
+
 func FormatTimeRFC3339(t time.Time) string {
 	return t.Format(time.RFC3339)
 }

service/auth.go

@@ -250,6 +250,19 @@ func (s *as) UnRetweet(ctx context.Context, c *model.Client, id string) (count i
 	return s.Service.UnRetweet(ctx, c, id)
 }
 
+func (s *as) Vote(ctx context.Context, c *model.Client, id string,
+	choices []string) (err error) {
+	err = s.authenticateClient(ctx, c)
+	if err != nil {
+		return
+	}
+	err = checkCSRF(ctx, c)
+	if err != nil {
+		return
+	}
+	return s.Service.Vote(ctx, c, id, choices)
+}
+
 func (s *as) Follow(ctx context.Context, c *model.Client, id string) (err error) {
 	err = s.authenticateClient(ctx, c)
 	if err != nil {

service/logging.go

@@ -189,6 +189,14 @@ func (s *ls) UnRetweet(ctx context.Context, c *model.Client, id string) (count i
 	return s.Service.UnRetweet(ctx, c, id)
 }
 
+func (s *ls) Vote(ctx context.Context, c *model.Client, id string, choices []string) (err error) {
+	defer func(begin time.Time) {
+		s.logger.Printf("method=%v, id=%v, took=%v, err=%v\n",
+			"Vote", id, time.Since(begin), err)
+	}(time.Now())
+	return s.Service.Vote(ctx, c, id, choices)
+}
+
 func (s *ls) Follow(ctx context.Context, c *model.Client, id string) (err error) {
 	defer func(begin time.Time) {
 		s.logger.Printf("method=%v, id=%v, took=%v, err=%v\n",

service/service.go

@@ -42,6 +42,7 @@ type Service interface {
 	UnLike(ctx context.Context, c *model.Client, id string) (count int64, err error)
 	Retweet(ctx context.Context, c *model.Client, id string) (count int64, err error)
 	UnRetweet(ctx context.Context, c *model.Client, id string) (count int64, err error)
+	Vote(ctx context.Context, c *model.Client, id string, choices []string) (err error)
 	Follow(ctx context.Context, c *model.Client, id string) (err error)
 	UnFollow(ctx context.Context, c *model.Client, id string) (err error)
 	Mute(ctx context.Context, c *model.Client, id string) (err error)
@@ -843,6 +844,15 @@ func (svc *service) UnRetweet(ctx context.Context, c *model.Client, id string) (
 	return
 }
 
+func (svc *service) Vote(ctx context.Context, c *model.Client, id string,
+	choices []string) (err error) {
+	_, err = c.Vote(ctx, id, choices)
+	if err != nil {
+		return
+	}
+	return
+}
+
 func (svc *service) Follow(ctx context.Context, c *model.Client, id string) (err error) {
 	_, err = c.AccountFollow(ctx, id)
 	return

service/transport.go

@@ -419,6 +419,24 @@ func NewHandler(s Service, staticDir string) http.Handler {
 		w.WriteHeader(http.StatusFound)
 	}
 
+	vote := func(w http.ResponseWriter, req *http.Request) {
+		c := newClient(w)
+		ctx := newCtxWithSesionCSRF(req, req.FormValue("csrf_token"))
+		id, _ := mux.Vars(req)["id"]
+		statusID := req.FormValue("status_id")
+		choices, _ := req.PostForm["choices"]
+
+		err := s.Vote(ctx, c, id, choices)
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			s.ServeErrorPage(ctx, c, err)
+			return
+		}
+
+		w.Header().Add("Location", req.Header.Get("Referer")+"#status-"+statusID)
+		w.WriteHeader(http.StatusFound)
+	}
+
 	follow := func(w http.ResponseWriter, req *http.Request) {
 		c := newClient(w)
 		ctx := newCtxWithSesionCSRF(req, req.FormValue("csrf_token"))
@@ -697,6 +715,7 @@ func NewHandler(s Service, staticDir string) http.Handler {
 	r.HandleFunc("/unlike/{id}", unlike).Methods(http.MethodPost)
 	r.HandleFunc("/retweet/{id}", retweet).Methods(http.MethodPost)
 	r.HandleFunc("/unretweet/{id}", unretweet).Methods(http.MethodPost)
+	r.HandleFunc("/vote/{id}", vote).Methods(http.MethodPost)
 	r.HandleFunc("/follow/{id}", follow).Methods(http.MethodPost)
 	r.HandleFunc("/unfollow/{id}", unfollow).Methods(http.MethodPost)
 	r.HandleFunc("/mute/{id}", mute).Methods(http.MethodPost)

static/style.css

@@ -452,6 +452,14 @@ a:hover,
 	margin: 2px;
 }
 
+.poll-form button[type=submit] {
+	margin-top: 6px;
+}
+
+.poll-info {
+	margin-top: 6px;
+}
+
 .dark {
 	background-color: #222222;
 	background-image: none;

templates/status.tmpl

@@ -25,11 +25,11 @@
 					<span class="status-uname"> {{.Account.Acct}} </span>
 				</a>
 				<div class="more-container" title="more">
-					<div class="remote-link" title="mute">
+					<div class="remote-link">
 						{{.Visibility}}
 					</div>
 					<div class="more-content">
-						<a class="more-link" href="{{.URL}}" target="_blank" title="mute">
+						<a class="more-link" href="{{.URL}}" target="_blank" title="source">
 							source
 						</a>
 						{{if .Muted}}
@@ -102,6 +102,41 @@
 				{{end}}
 				{{end}}
 			</div>
+			{{if .Poll}}
+			<form class="poll-form" action="/vote/{{.Poll.ID}}" method="POST">
+				<input type="hidden" name="csrf_token" value="{{$.Ctx.CSRFToken}}">
+				<input type="hidden" name="status_id" value="{{$s.ID}}">
+				{{range $i, $o := .Poll.Options}}
+				<div class="poll-option">
+					{{if (or $s.Poll.Expired $s.Poll.Voted)}}
+					<div> {{$o.Title}} - {{$o.VotesCount}} votes </div>
+					{{else}}
+					<input type="{{if $s.Poll.Multiple}}checkbox{{else}}radio{{end}}" name="choices" 
+						id="poll-{{$s.ID}}-{{$i}}" value="{{$i}}">
+					<label for="poll-{{$s.ID}}-{{$i}}"> 
+						{{$o.Title}} 
+					</label>
+					{{end}}
+				</div>
+				{{end}}
+				{{if not (or .Poll.Expired .Poll.Voted)}}
+				<button type="submit"> Vote </button>
+				{{end}}
+				<div class="poll-info">
+					<span>{{.Poll.VotesCount}} votes</span>
+					{{if .Poll.Expired}}
+					<span> - poll expired </span>
+					{{else}}
+					<span>
+						- poll ends in
+						<time datetime="{{FormatTimeRFC3339 .Poll.ExpiresAt}}" title="{{FormatTimeRFC822 .Poll.ExpiresAt}}"> 
+							{{TimeUntil .Poll.ExpiresAt}} 
+						</time> 
+					</span>
+					{{end}}
+				</div>
+			</form>
+			{{end}}
 			<div class="status-action-container"> 
 				<div class="status-action">
 					<a href="/thread/{{.ID}}?reply=true#status-{{.ID}}" title="reply"> 
@@ -154,8 +189,11 @@
 					</a>
 				</div>
 				<div class="status-action">
-					<a class="status-time" href="{{if not .ShowReplies}}/thread/{{.ID}}{{end}}#status-{{.ID}}" {{if $.Ctx.ThreadInNewTab}}target="_blank"{{end}}> 
+					<a class="status-time" href="{{if not .ShowReplies}}/thread/{{.ID}}{{end}}#status-{{.ID}}" 
-						<time datetime="{{FormatTimeRFC3339 .CreatedAt}}" title="{{FormatTimeRFC822 .CreatedAt}}"> {{TimeSince .CreatedAt}} </time> 
+						{{if $.Ctx.ThreadInNewTab}}target="_blank"{{end}}> 
+						<time datetime="{{FormatTimeRFC3339 .CreatedAt}}" title="{{FormatTimeRFC822 .CreatedAt}}"> 
+							{{TimeSince .CreatedAt}}
+						</time> 
 					</a>
 				</div>
 			</div>