Merge pull request #54 from 178inaba/pagination

Add Pagination

accounts.go

@@ -84,9 +84,9 @@ func (c *Client) AccountUpdate(ctx context.Context, profile *Profile) (*Account,
 }
 
 // GetAccountStatuses return statuses by specified accuont.
-func (c *Client) GetAccountStatuses(ctx context.Context, id int64) ([]*Status, error) {
+func (c *Client) GetAccountStatuses(ctx context.Context, id int64, pg *Pagination) ([]*Status, error) {
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/statuses", id), nil, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/statuses", id), nil, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -94,29 +94,19 @@ func (c *Client) GetAccountStatuses(ctx context.Context, id int64) ([]*Status, e
 }
 
 // GetAccountFollowers return followers list.
-func (c *Client) GetAccountFollowers(ctx context.Context, id int64) ([]*Account, error) {
+func (c *Client) GetAccountFollowers(ctx context.Context, id int64, pg *Pagination) ([]*Account, error) {
-	params := url.Values{}
-	var total []*Account
-	for {
 	var accounts []*Account
-		var next bool
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/followers", id), nil, &accounts, pg)
-		err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/followers", id), params, &accounts, &next)
 	if err != nil {
 		return nil, err
 	}
-		total = append(total, accounts...)
+	return accounts, nil
-		if !next {
-			break
-		}
-		time.Sleep(c.interval)
-	}
-	return total, nil
 }
 
 // GetAccountFollowing return following list.
-func (c *Client) GetAccountFollowing(ctx context.Context, id int64) ([]*Account, error) {
+func (c *Client) GetAccountFollowing(ctx context.Context, id int64, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/following", id), nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/following", id), nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -124,9 +114,9 @@ func (c *Client) GetAccountFollowing(ctx context.Context, id int64) ([]*Account,
 }
 
 // GetBlocks return block list.
-func (c *Client) GetBlocks(ctx context.Context) ([]*Account, error) {
+func (c *Client) GetBlocks(ctx context.Context, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/blocks", nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/blocks", nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -246,9 +236,9 @@ func (c *Client) FollowRemoteUser(ctx context.Context, uri string) (*Account, er
 }
 
 // GetFollowRequests return follow-requests.
-func (c *Client) GetFollowRequests(ctx context.Context) ([]*Account, error) {
+func (c *Client) GetFollowRequests(ctx context.Context, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/follow_requests", nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/follow_requests", nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -266,9 +256,9 @@ func (c *Client) FollowRequestReject(ctx context.Context, id int64) error {
 }
 
 // GetMutes returns the list of users muted by the current user.
-func (c *Client) GetMutes(ctx context.Context) ([]*Account, error) {
+func (c *Client) GetMutes(ctx context.Context, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/mutes", nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/mutes", nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}

accounts_test.go

@@ -25,11 +25,11 @@ func TestGetAccount(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	a, err := client.GetAccount(context.Background(), 1)
+	_, err := client.GetAccount(context.Background(), 1)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	a, err = client.GetAccount(context.Background(), 1234567)
+	a, err := client.GetAccount(context.Background(), 1234567)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -124,11 +124,11 @@ func TestGetAccountStatuses(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetAccountStatuses(context.Background(), 123)
+	_, err := client.GetAccountStatuses(context.Background(), 123, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	ss, err := client.GetAccountStatuses(context.Background(), 1234567)
+	ss, err := client.GetAccountStatuses(context.Background(), 1234567, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -157,11 +157,11 @@ func TestGetAccountFollowers(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetAccountFollowers(context.Background(), 123)
+	_, err := client.GetAccountFollowers(context.Background(), 123, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	fl, err := client.GetAccountFollowers(context.Background(), 1234567)
+	fl, err := client.GetAccountFollowers(context.Background(), 1234567, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -193,11 +193,11 @@ func TestGetAccountFollowing(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetAccountFollowing(context.Background(), 123)
+	_, err := client.GetAccountFollowing(context.Background(), 123, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	fl, err := client.GetAccountFollowing(context.Background(), 1234567)
+	fl, err := client.GetAccountFollowing(context.Background(), 1234567, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -231,11 +231,11 @@ func TestGetBlocks(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetBlocks(context.Background())
+	_, err := client.GetBlocks(context.Background(), nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	bl, err := client.GetBlocks(context.Background())
+	bl, err := client.GetBlocks(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -566,11 +566,11 @@ func TestGetFollowRequests(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetFollowRequests(context.Background())
+	_, err := client.GetFollowRequests(context.Background(), nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	fReqs, err := client.GetFollowRequests(context.Background())
+	fReqs, err := client.GetFollowRequests(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -652,11 +652,11 @@ func TestGetMutes(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetMutes(context.Background())
+	_, err := client.GetMutes(context.Background(), nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	mutes, err := client.GetMutes(context.Background())
+	mutes, err := client.GetMutes(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}

cmd/mstdn/cmd_followers.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/mattn/go-mastodon"
 	"github.com/urfave/cli"
@@ -16,10 +17,19 @@ func cmdFollowers(c *cli.Context) error {
 	if err != nil {
 		return err
 	}
-	followers, err := client.GetAccountFollowers(context.Background(), account.ID)
+	var followers []*mastodon.Account
+	var pg mastodon.Pagination
+	for {
+		fs, err := client.GetAccountFollowers(context.Background(), account.ID, &pg)
 		if err != nil {
 			return err
 		}
+		followers = append(followers, fs...)
+		if pg.MaxID == 0 {
+			break
+		}
+		time.Sleep(10 * time.Second)
+	}
 	s := newScreen(config)
 	for _, follower := range followers {
 		fmt.Fprintf(c.App.Writer, "%v,%v\n", follower.ID, s.acct(follower.Acct))

cmd/mstdn/cmd_followers_test.go

@@ -17,6 +17,7 @@ func TestCmdFollowers(t *testing.T) {
 				fmt.Fprintln(w, `{"id": 123}`)
 				return
 			case "/api/v1/accounts/123/followers":
+				w.Header().Set("Link", `<http://example.com?since_id=890>; rel="prev"`)
 				fmt.Fprintln(w, `[{"id": 234, "username": "ZZZ", "acct": "zzz"}]`)
 				return
 			}

cmd/mstdn/cmd_notification.go

@@ -11,7 +11,7 @@ import (
 
 func cmdNotification(c *cli.Context) error {
 	client := c.App.Metadata["client"].(*mastodon.Client)
-	notifications, err := client.GetNotifications(context.Background())
+	notifications, err := client.GetNotifications(context.Background(), nil)
 	if err != nil {
 		return err
 	}

cmd/mstdn/cmd_timeline.go

@@ -10,7 +10,7 @@ import (
 func cmdTimeline(c *cli.Context) error {
 	client := c.App.Metadata["client"].(*mastodon.Client)
 	config := c.App.Metadata["config"].(*mastodon.Config)
-	timeline, err := client.GetTimelineHome(context.Background())
+	timeline, err := client.GetTimelineHome(context.Background(), nil)
 	if err != nil {
 		return err
 	}

example_test.go

@@ -32,7 +32,7 @@ func ExampleClient() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	timeline, err := c.GetTimelineHome(context.Background())
+	timeline, err := c.GetTimelineHome(context.Background(), nil)
 	if err != nil {
 		log.Fatal(err)
 	}

mastodon.go

@@ -4,6 +4,8 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"io"
 	"mime/multipart"
 	"net/http"
@@ -11,8 +13,10 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"strconv"
 	"strings"
-	"time"
+
+	"github.com/tomnomnom/linkheader"
 )
 
 // Config is a setting for access mastodon APIs.
@@ -27,60 +31,9 @@ type Config struct {
 type Client struct {
 	http.Client
 	config *Config
-	interval time.Duration
 }
 
-type page struct {
+func (c *Client) doAPI(ctx context.Context, method string, uri string, params interface{}, res interface{}, pg *Pagination) error {
-	next string
-}
-
-func linkHeader(h http.Header, rel string) []string {
-	var links []string
-	for _, v := range h["Link"] {
-		var p string
-		for len(v) > 0 {
-			i := strings.Index(v, ";")
-			if i < 0 {
-				break
-			}
-			e := i
-			i++
-			for i < len(v) {
-				if v[i] != ' ' {
-					break
-				}
-				i++
-			}
-			p = strings.TrimSpace(v[i:])
-			if !strings.HasPrefix(p, "rel=") {
-				break
-			}
-			i += 4
-			pos := strings.Index(p[4:], `,`)
-			if pos > 0 {
-				p = p[4 : 4+pos]
-				i += pos
-			} else {
-				p = p[4:]
-				i = len(v) - 1
-			}
-			if k := strings.Trim(p, `"`); k == rel {
-				links = append(links, strings.Trim(v[:e], "<>"))
-			}
-			i++
-			for i < len(v) {
-				if v[i] != ' ' {
-					break
-				}
-				i++
-			}
-			v = v[i:]
-		}
-	}
-	return links
-}
-
-func (c *Client) doAPI(ctx context.Context, method string, uri string, params interface{}, res interface{}, next *bool) error {
 	u, err := url.Parse(c.config.Server)
 	if err != nil {
 		return err
@@ -92,6 +45,9 @@ func (c *Client) doAPI(ctx context.Context, method string, uri string, params in
 	if values, ok := params.(url.Values); ok {
 		var body io.Reader
 		if method == http.MethodGet {
+			if pg != nil {
+				values = pg.setValues(values)
+			}
 			u.RawQuery = values.Encode()
 		} else {
 			body = strings.NewReader(values.Encode())
@@ -127,6 +83,9 @@ func (c *Client) doAPI(ctx context.Context, method string, uri string, params in
 		}
 		ct = mw.FormDataContentType()
 	} else {
+		if method == http.MethodGet && pg != nil {
+			u.RawQuery = pg.toValues().Encode()
+		}
 		req, err = http.NewRequest(method, u.String(), nil)
 		if err != nil {
 			return err
@@ -144,23 +103,18 @@ func (c *Client) doAPI(ctx context.Context, method string, uri string, params in
 	}
 	defer resp.Body.Close()
 
-	if next != nil && params != nil {
-		nl := linkHeader(resp.Header, "next")
-		*next = false
-		if len(nl) > 0 {
-			u, err = url.Parse(nl[0])
-			if err == nil {
-				for k, v := range u.Query() {
-					params.(url.Values)[k] = v
-				}
-			}
-			*next = true
-		}
-	}
 	if resp.StatusCode != http.StatusOK {
 		return parseAPIError("bad request", resp)
 	} else if res == nil {
 		return nil
+	} else if pg != nil {
+		if lh := resp.Header.Get("Link"); lh != "" {
+			pg2, err := newPagination(lh)
+			if err != nil {
+				return err
+			}
+			*pg = *pg2
+		}
 	}
 	return json.NewDecoder(resp.Body).Decode(&res)
 }
@@ -170,7 +124,6 @@ func NewClient(config *Config) *Client {
 	return &Client{
 		Client: *http.DefaultClient,
 		config: config,
-		interval: 10 * time.Second,
 	}
 }
 
@@ -257,3 +210,67 @@ type Results struct {
 	Statuses []*Status  `json:"statuses"`
 	Hashtags []string   `json:"hashtags"`
 }
+
+// Pagination is a struct for specifying the get range.
+type Pagination struct {
+	MaxID   int64
+	SinceID int64
+	Limit   int64
+}
+
+func newPagination(rawlink string) (*Pagination, error) {
+	if rawlink == "" {
+		return nil, errors.New("empty link header")
+	}
+
+	p := &Pagination{}
+	for _, link := range linkheader.Parse(rawlink) {
+		switch link.Rel {
+		case "next":
+			maxID, err := getPaginationID(link.URL, "max_id")
+			if err != nil {
+				return nil, err
+			}
+			p.MaxID = maxID
+		case "prev":
+			sinceID, err := getPaginationID(link.URL, "since_id")
+			if err != nil {
+				return nil, err
+			}
+			p.SinceID = sinceID
+		}
+	}
+
+	return p, nil
+}
+
+func getPaginationID(rawurl, key string) (int64, error) {
+	u, err := url.Parse(rawurl)
+	if err != nil {
+		return 0, err
+	}
+
+	id, err := strconv.ParseInt(u.Query().Get(key), 10, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	return id, nil
+}
+
+func (p *Pagination) toValues() url.Values {
+	return p.setValues(url.Values{})
+}
+
+func (p *Pagination) setValues(params url.Values) url.Values {
+	if p.MaxID > 0 {
+		params.Set("max_id", fmt.Sprint(p.MaxID))
+	} else if p.SinceID > 0 {
+		params.Set("since_id", fmt.Sprint(p.SinceID))
+	}
+	if p.Limit > 0 {
+		params.Set("limit", fmt.Sprint(p.Limit))
+	}
+
+	return params
+}

mastodon_test.go

@@ -6,11 +6,88 @@ import (
 	"io"
 	"net/http"
 	"net/http/httptest"
-	"reflect"
+	"net/url"
 	"testing"
 	"time"
 )
 
+func TestDoAPI(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Query().Get("max_id") == "999" {
+			w.Header().Set("Link", `<:>; rel="next"`)
+		} else {
+			w.Header().Set("Link", `<http://example.com?max_id=234>; rel="next", <http://example.com?since_id=890>; rel="prev"`)
+		}
+		fmt.Fprintln(w, `[{"username": "foo"}, {"username": "bar"}]`)
+	}))
+	defer ts.Close()
+
+	c := NewClient(&Config{Server: ts.URL})
+	var accounts []Account
+	err := c.doAPI(context.Background(), http.MethodGet, "/", nil, &accounts, &Pagination{
+		MaxID: 999,
+	})
+	if err == nil {
+		t.Fatalf("should be fail: %v", err)
+	}
+
+	pg := &Pagination{
+		MaxID:   123,
+		SinceID: 789,
+		Limit:   10,
+	}
+	err = c.doAPI(context.Background(), http.MethodGet, "/", url.Values{}, &accounts, pg)
+	if err != nil {
+		t.Fatalf("should not be fail: %v", err)
+	}
+	if pg.MaxID != 234 {
+		t.Fatalf("want %d but %d", 234, pg.MaxID)
+	}
+	if pg.SinceID != 890 {
+		t.Fatalf("want %d but %d", 890, pg.SinceID)
+	}
+	if accounts[0].Username != "foo" {
+		t.Fatalf("want %q but %q", "foo", accounts[0].Username)
+	}
+	if accounts[1].Username != "bar" {
+		t.Fatalf("want %q but %q", "bar", accounts[1].Username)
+	}
+
+	pg = &Pagination{
+		MaxID:   123,
+		SinceID: 789,
+		Limit:   10,
+	}
+	err = c.doAPI(context.Background(), http.MethodGet, "/", nil, &accounts, pg)
+	if err != nil {
+		t.Fatalf("should not be fail: %v", err)
+	}
+	if pg.MaxID != 234 {
+		t.Fatalf("want %d but %d", 234, pg.MaxID)
+	}
+	if pg.SinceID != 890 {
+		t.Fatalf("want %d but %d", 890, pg.SinceID)
+	}
+	if accounts[0].Username != "foo" {
+		t.Fatalf("want %q but %q", "foo", accounts[0].Username)
+	}
+	if accounts[1].Username != "bar" {
+		t.Fatalf("want %q but %q", "bar", accounts[1].Username)
+	}
+
+	// *Pagination is nil
+	err = c.doAPI(context.Background(), http.MethodGet, "/", nil, &accounts, nil)
+	if err != nil {
+		t.Fatalf("should not be fail: %v", err)
+	}
+	if accounts[0].Username != "foo" {
+		t.Fatalf("want %q but %q", "foo", accounts[0].Username)
+	}
+	if accounts[1].Username != "bar" {
+		t.Fatalf("want %q but %q", "bar", accounts[1].Username)
+	}
+}
+
 func TestAuthenticate(t *testing.T) {
 	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.FormValue("username") != "valid" || r.FormValue("password") != "user" {
@@ -153,7 +230,7 @@ func TestGetTimelineHome(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	tl, err := client.GetTimelineHome(context.Background())
+	tl, err := client.GetTimelineHome(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -183,7 +260,7 @@ func TestGetTimelineHomeWithCancel(t *testing.T) {
 	})
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
-	_, err := client.GetTimelineHome(ctx)
+	_, err := client.GetTimelineHome(ctx, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
@@ -200,47 +277,85 @@ func TestForTheCoverages(t *testing.T) {
 	_ = (&ErrorEvent{io.EOF}).Error()
 }
 
-func TestLinkHeader(t *testing.T) {
+func TestNewPagination(t *testing.T) {
-	tests := []struct {
+	_, err := newPagination("")
-		header []string
+	if err == nil {
-		rel    string
+		t.Fatalf("should be fail: %v", err)
-		want   []string
-	}{
-		{
-			header: []string{`<http://example.com/?max_id=3>; rel="foo"`},
-			rel:    "boo",
-			want:   nil,
-		},
-		{
-			header: []string{`<http://example.com/?max_id=3>; rel="foo"`},
-			rel:    "foo",
-			want:   []string{"http://example.com/?max_id=3"},
-		},
-		{
-			header: []string{`<http://example.com/?max_id=3>; rel="foo1"`},
-			rel:    "foo",
-			want:   nil,
-		},
-		{
-			header: []string{`<http://example.com/?max_id=3>; rel="foo", <http://example.com/?max_id=4>; rel="bar"`},
-			rel:    "foo",
-			want:   []string{"http://example.com/?max_id=3"},
-		},
-		{
-			header: []string{`<http://example.com/?max_id=3>; rel="foo", <http://example.com/?max_id=4>; rel="bar"`},
-			rel:    "bar",
-			want:   []string{"http://example.com/?max_id=4"},
-		},
 	}
 
-	for _, test := range tests {
+	_, err = newPagination(`<:>; rel="next"`)
-		h := make(http.Header)
+	if err == nil {
-		for _, he := range test.header {
+		t.Fatalf("should be fail: %v", err)
-			h.Add("Link", he)
 	}
-		got := linkHeader(h, test.rel)
+
-		if !reflect.DeepEqual(got, test.want) {
+	_, err = newPagination(`<:>; rel="prev"`)
-			t.Fatalf("want %v but %v", test.want, got)
+	if err == nil {
+		t.Fatalf("should be fail: %v", err)
+	}
+
+	pg, err := newPagination(`<http://example.com?max_id=123>; rel="next", <http://example.com?since_id=789>; rel="prev"`)
+	if err != nil {
+		t.Fatalf("should not be fail: %v", err)
+	}
+	if pg.MaxID != 123 {
+		t.Fatalf("want %d but %d", 123, pg.MaxID)
+	}
+	if pg.SinceID != 789 {
+		t.Fatalf("want %d but %d", 789, pg.SinceID)
 	}
 }
+
+func TestGetPaginationID(t *testing.T) {
+	_, err := getPaginationID(":", "max_id")
+	if err == nil {
+		t.Fatalf("should be fail: %v", err)
+	}
+
+	_, err = getPaginationID("http://example.com?max_id=abc", "max_id")
+	if err == nil {
+		t.Fatalf("should be fail: %v", err)
+	}
+
+	id, err := getPaginationID("http://example.com?max_id=123", "max_id")
+	if err != nil {
+		t.Fatalf("should not be fail: %v", err)
+	}
+	if id != 123 {
+		t.Fatalf("want %d but %d", 123, id)
+	}
+}
+
+func TestPaginationSetValues(t *testing.T) {
+	p := &Pagination{
+		MaxID:   123,
+		SinceID: 789,
+		Limit:   10,
+	}
+	before := url.Values{"key": {"value"}}
+	after := p.setValues(before)
+	if after.Get("key") != "value" {
+		t.Fatalf("want %q but %q", "value", after.Get("key"))
+	}
+	if after.Get("max_id") != "123" {
+		t.Fatalf("want %q but %q", "123", after.Get("max_id"))
+	}
+	if after.Get("since_id") != "" {
+		t.Fatalf("result should be empty string: %q", after.Get("since_id"))
+	}
+	if after.Get("limit") != "10" {
+		t.Fatalf("want %q but %q", "10", after.Get("limit"))
+	}
+
+	p = &Pagination{
+		MaxID:   0,
+		SinceID: 789,
+	}
+	before = url.Values{}
+	after = p.setValues(before)
+	if after.Get("max_id") != "" {
+		t.Fatalf("result should be empty string: %q", after.Get("max_id"))
+	}
+	if after.Get("since_id") != "789" {
+		t.Fatalf("want %q but %q", "789", after.Get("since_id"))
+	}
 }

notification.go

@@ -17,9 +17,9 @@ type Notification struct {
 }
 
 // GetNotifications return notifications.
-func (c *Client) GetNotifications(ctx context.Context) ([]*Notification, error) {
+func (c *Client) GetNotifications(ctx context.Context, pg *Pagination) ([]*Notification, error) {
 	var notifications []*Notification
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/notifications", nil, &notifications, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/notifications", nil, &notifications, pg)
 	if err != nil {
 		return nil, err
 	}

notification_test.go

@@ -32,7 +32,7 @@ func TestGetNotifications(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	ns, err := client.GetNotifications(context.Background())
+	ns, err := client.GetNotifications(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}

status.go

@@ -48,9 +48,9 @@ type Card struct {
 }
 
 // GetFavourites return the favorite list of the current user.
-func (c *Client) GetFavourites(ctx context.Context) ([]*Status, error) {
+func (c *Client) GetFavourites(ctx context.Context, pg *Pagination) ([]*Status, error) {
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/favourites", nil, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/favourites", nil, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -88,9 +88,9 @@ func (c *Client) GetStatusCard(ctx context.Context, id int64) (*Card, error) {
 }
 
 // GetRebloggedBy returns the account list of the user who reblogged the toot of id.
-func (c *Client) GetRebloggedBy(ctx context.Context, id int64) ([]*Account, error) {
+func (c *Client) GetRebloggedBy(ctx context.Context, id int64, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/statuses/%d/reblogged_by", id), nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/statuses/%d/reblogged_by", id), nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -98,9 +98,9 @@ func (c *Client) GetRebloggedBy(ctx context.Context, id int64) ([]*Account, erro
 }
 
 // GetFavouritedBy returns the account list of the user who liked the toot of id.
-func (c *Client) GetFavouritedBy(ctx context.Context, id int64) ([]*Account, error) {
+func (c *Client) GetFavouritedBy(ctx context.Context, id int64, pg *Pagination) ([]*Account, error) {
 	var accounts []*Account
-	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/statuses/%d/favourited_by", id), nil, &accounts, nil)
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/statuses/%d/favourited_by", id), nil, &accounts, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -148,9 +148,9 @@ func (c *Client) Unfavourite(ctx context.Context, id int64) (*Status, error) {
 }
 
 // GetTimelineHome return statuses from home timeline.
-func (c *Client) GetTimelineHome(ctx context.Context) ([]*Status, error) {
+func (c *Client) GetTimelineHome(ctx context.Context, pg *Pagination) ([]*Status, error) {
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/home", nil, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/home", nil, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -158,14 +158,14 @@ func (c *Client) GetTimelineHome(ctx context.Context) ([]*Status, error) {
 }
 
 // GetTimelinePublic return statuses from public timeline.
-func (c *Client) GetTimelinePublic(ctx context.Context, isLocal bool) ([]*Status, error) {
+func (c *Client) GetTimelinePublic(ctx context.Context, isLocal bool, pg *Pagination) ([]*Status, error) {
 	params := url.Values{}
 	if isLocal {
 		params.Set("local", "t")
 	}
 
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/public", params, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/public", params, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -173,14 +173,14 @@ func (c *Client) GetTimelinePublic(ctx context.Context, isLocal bool) ([]*Status
 }
 
 // GetTimelineHashtag return statuses from tagged timeline.
-func (c *Client) GetTimelineHashtag(ctx context.Context, tag string, isLocal bool) ([]*Status, error) {
+func (c *Client) GetTimelineHashtag(ctx context.Context, tag string, isLocal bool, pg *Pagination) ([]*Status, error) {
 	params := url.Values{}
 	if isLocal {
 		params.Set("local", "t")
 	}
 
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/timelines/tag/%s", url.PathEscape(tag)), params, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, fmt.Sprintf("/api/v1/timelines/tag/%s", url.PathEscape(tag)), params, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}
@@ -189,7 +189,7 @@ func (c *Client) GetTimelineHashtag(ctx context.Context, tag string, isLocal boo
 
 // GetTimelineMedia return statuses from media timeline.
 // NOTE: This is an experimental feature of pawoo.net.
-func (c *Client) GetTimelineMedia(ctx context.Context, isLocal bool) ([]*Status, error) {
+func (c *Client) GetTimelineMedia(ctx context.Context, isLocal bool, pg *Pagination) ([]*Status, error) {
 	params := url.Values{}
 	params.Set("media", "t")
 	if isLocal {
@@ -197,7 +197,7 @@ func (c *Client) GetTimelineMedia(ctx context.Context, isLocal bool) ([]*Status,
 	}
 
 	var statuses []*Status
-	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/public", params, &statuses, nil)
+	err := c.doAPI(ctx, http.MethodGet, "/api/v1/timelines/public", params, &statuses, pg)
 	if err != nil {
 		return nil, err
 	}

status_test.go

@@ -21,7 +21,7 @@ func TestGetFavourites(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	favs, err := client.GetFavourites(context.Background())
+	favs, err := client.GetFavourites(context.Background(), nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -152,11 +152,11 @@ func TestGetRebloggedBy(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetRebloggedBy(context.Background(), 123)
+	_, err := client.GetRebloggedBy(context.Background(), 123, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	rbs, err := client.GetRebloggedBy(context.Background(), 1234567)
+	rbs, err := client.GetRebloggedBy(context.Background(), 1234567, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -188,11 +188,11 @@ func TestGetFavouritedBy(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetFavouritedBy(context.Background(), 123)
+	_, err := client.GetFavouritedBy(context.Background(), 123, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	fbs, err := client.GetFavouritedBy(context.Background(), 1234567)
+	fbs, err := client.GetFavouritedBy(context.Background(), 1234567, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -338,11 +338,11 @@ func TestGetTimelinePublic(t *testing.T) {
 	defer ts.Close()
 
 	client := NewClient(&Config{Server: ts.URL})
-	_, err := client.GetTimelinePublic(context.Background(), false)
+	_, err := client.GetTimelinePublic(context.Background(), false, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	tl, err := client.GetTimelinePublic(context.Background(), true)
+	tl, err := client.GetTimelinePublic(context.Background(), true, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -374,11 +374,11 @@ func TestGetTimelineHashtag(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetTimelineHashtag(context.Background(), "notfound", false)
+	_, err := client.GetTimelineHashtag(context.Background(), "notfound", false, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	tags, err := client.GetTimelineHashtag(context.Background(), "zzz", true)
+	tags, err := client.GetTimelineHashtag(context.Background(), "zzz", true, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}
@@ -410,11 +410,11 @@ func TestGetTimelineMedia(t *testing.T) {
 		ClientSecret: "bar",
 		AccessToken:  "zoo",
 	})
-	_, err := client.GetTimelineMedia(context.Background(), false)
+	_, err := client.GetTimelineMedia(context.Background(), false, nil)
 	if err == nil {
 		t.Fatalf("should be fail: %v", err)
 	}
-	tags, err := client.GetTimelineMedia(context.Background(), true)
+	tags, err := client.GetTimelineMedia(context.Background(), true, nil)
 	if err != nil {
 		t.Fatalf("should not be fail: %v", err)
 	}