Add client package

2022-01-20 17:50:56 +01:00
parent 99bddcd03f
commit a4bf701ac3
6 changed files with 364 additions and 33 deletions
--- a/client/client.go
+++ b/client/client.go
@@ -0,0 +1,167 @@
+package client
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"time"
+
+	"git.t-juice.club/torjus/gpaste/api"
+	"git.t-juice.club/torjus/gpaste/files"
+	"github.com/google/uuid"
+)
+
+type Client struct {
+	BaseURL   string
+	AuthToken string
+
+	httpClient http.Client
+}
+
+func (c *Client) Login(ctx context.Context, username, password string) error {
+	url := fmt.Sprintf("%s/api/login", c.BaseURL)
+	// TODO: Change timeout
+	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+
+	body := new(bytes.Buffer)
+	requestData := api.RequestAPILogin{
+		Username: username,
+		Password: password,
+	}
+	encoder := json.NewEncoder(body)
+	if err := encoder.Encode(&requestData); err != nil {
+		return fmt.Errorf("error encoding response: %w", err)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, body)
+	if err != nil {
+		return fmt.Errorf("error creating request: %w", err)
+	}
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("unable to perform request: %s", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("got non-ok response from server: %s", resp.Status)
+	}
+
+	var responseData api.ResponseAPILogin
+
+	decoder := json.NewDecoder(resp.Body)
+	if err := decoder.Decode(&responseData); err != nil {
+		return fmt.Errorf("unable to parse response: %s", err)
+	}
+	c.AuthToken = responseData.Token
+
+	return nil
+}
+
+func (c *Client) UserCreate(ctx context.Context, username, password string) error {
+	url := fmt.Sprintf("%s/api/user", c.BaseURL)
+	body := new(bytes.Buffer)
+
+	requestData := &api.RequestAPIUserCreate{
+		Username: username,
+		Password: password,
+	}
+	encoder := json.NewEncoder(body)
+	if err := encoder.Encode(requestData); err != nil {
+		return fmt.Errorf("error encoding response: %w", err)
+	}
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, body)
+	if err != nil {
+		return fmt.Errorf("error creating request: %w", err)
+	}
+
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", c.AuthToken))
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("unable to perform request: %s", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusAccepted {
+		return fmt.Errorf("got non-ok response from server: %s", resp.Status)
+	}
+
+	return nil
+}
+
+func (c *Client) Download(ctx context.Context, id string) (io.ReadCloser, error) {
+	url := fmt.Sprintf("%s/api/file/%s", c.BaseURL, id)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("error creating request: %w", err)
+	}
+
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", c.AuthToken))
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("unable to perform request: %s", err)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("got non-ok response from server: %s", resp.Status)
+	}
+
+	return resp.Body, nil
+}
+
+func (c *Client) Upload(ctx context.Context, files ...*files.File) ([]api.ResponseAPIFilePost, error) {
+	url := fmt.Sprintf("%s/api/file", c.BaseURL)
+	client := &http.Client{}
+
+	// TODO: Change timeout
+	ctx, cancel := context.WithTimeout(ctx, 10*time.Minute)
+	defer cancel()
+
+	// TODO: Improve buffering
+	buf := &bytes.Buffer{}
+	mw := multipart.NewWriter(buf)
+
+	for _, file := range files {
+		fw, err := mw.CreateFormFile(uuid.Must(uuid.NewRandom()).String(), file.OriginalFilename)
+		if err != nil {
+			return nil, err
+		}
+		if _, err := io.Copy(fw, file.Body); err != nil {
+			return nil, err
+		}
+		file.Body.Close()
+	}
+	mw.Close()
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, buf)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Add("Content-Type", mw.FormDataContentType())
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	var expectedResp []api.ResponseAPIFilePost
+
+	decoder := json.NewDecoder(resp.Body)
+	if err := decoder.Decode(&expectedResp); err != nil {
+		return nil, fmt.Errorf("error decoding response: %w", err)
+	}
+
+	for _, r := range expectedResp {
+		fmt.Printf("Uploaded file %s\n", r.ID)
+	}
+	return expectedResp, nil
+}
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -0,0 +1,165 @@
+package client_test
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"strings"
+	"testing"
+	"time"
+
+	"git.t-juice.club/torjus/gpaste"
+	"git.t-juice.club/torjus/gpaste/api"
+	"git.t-juice.club/torjus/gpaste/client"
+	"git.t-juice.club/torjus/gpaste/files"
+	"git.t-juice.club/torjus/gpaste/users"
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/uuid"
+)
+
+func TestClient(t *testing.T) {
+	listener, err := net.Listen("tcp", ":0")
+	if err != nil {
+		panic(err)
+	}
+
+	port := listener.Addr().(*net.TCPAddr).Port
+	cfg := &gpaste.ServerConfig{
+		LogLevel:      "ERROR",
+		URL:           fmt.Sprintf("http://localhost:%d", port),
+		SigningSecret: "TEST",
+		Store:         &gpaste.ServerStoreConfig{Type: "memory"},
+	}
+
+	srv := api.NewHTTPServer(cfg)
+
+	go func() {
+		srv.Serve(listener)
+	}()
+
+	t.Cleanup(func() {
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+		srv.Shutdown(ctx)
+		listener.Close()
+	})
+
+	// Add users
+	username := "admin"
+	password := "admin"
+	user := &users.User{
+		Username: username,
+		Role:     users.RoleAdmin,
+	}
+	if err := user.SetPassword(password); err != nil {
+		t.Fatalf("Error setting password: %s", err)
+	}
+	if err := srv.Users.Store(user); err != nil {
+		t.Fatalf("Error storing user: %s", err)
+	}
+
+	t.Run("Login", func(t *testing.T) {
+		client := client.Client{BaseURL: cfg.URL}
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		if err := client.Login(ctx, username, password); err != nil {
+			t.Fatalf("Error logging in: %s", err)
+		}
+
+		claims, err := srv.Auth.ValidateToken(client.AuthToken)
+		if err != nil {
+			t.Errorf("unable to get claims from token: %s", err)
+		}
+
+		if claims.Role != user.Role {
+			t.Errorf("Claims have wrong role: %s", cmp.Diff(claims.Role, user.Role))
+		}
+		if claims.Subject != username {
+			t.Errorf("Claims have wrong role: %s", cmp.Diff(claims.Subject, username))
+		}
+
+		t.Run("UserCreate", func(t *testing.T) {
+			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+			defer cancel()
+			username := "user"
+			password := "user"
+
+			if err := client.UserCreate(ctx, username, password); err != nil {
+				t.Fatalf("Error creating user: %s", err)
+			}
+
+			user, err := srv.Users.Get(username)
+			if err != nil {
+				t.Fatalf("Error getting new user: %s", err)
+			}
+
+			if user.Username != username {
+				t.Errorf("Username does not match.")
+			}
+			if err := user.ValidatePassword(password); err != nil {
+				t.Errorf("Unable to validate password: %s", err)
+			}
+		})
+	})
+	t.Run("Upload", func(t *testing.T) {
+		client := client.Client{BaseURL: cfg.URL}
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		fileContents := "this is the test file"
+		fileBody := io.NopCloser(strings.NewReader(fileContents))
+		file := &files.File{
+			OriginalFilename: "filename.txt",
+			Body:             fileBody,
+		}
+
+		resp, err := client.Upload(ctx, file)
+		if err != nil {
+			t.Fatalf("Error uploading: %s", err)
+		}
+
+		retrieved, err := srv.Files.Get(resp[0].ID)
+		if err != nil {
+			t.Fatalf("Error getting uploaded file from store: %s", err)
+		}
+		defer retrieved.Body.Close()
+
+		buf := new(strings.Builder)
+		if _, err := io.Copy(buf, retrieved.Body); err != nil {
+			t.Fatalf("error reading body from store: %s", err)
+		}
+		if buf.String() != fileContents {
+			t.Errorf("File contents does not match: %s", cmp.Diff(buf.String(), fileContents))
+		}
+	})
+	t.Run("Download", func(t *testing.T) {
+		client := client.Client{BaseURL: cfg.URL}
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		fileContents := "this is the test file"
+		fileBody := io.NopCloser(strings.NewReader(fileContents))
+		file := &files.File{
+			ID:               uuid.NewString(),
+			OriginalFilename: "filename.txt",
+			Body:             fileBody,
+		}
+
+		if err := srv.Files.Store(file); err != nil {
+			t.Fatalf("Error putting file in store: %s", err)
+		}
+
+		body, err := client.Download(ctx, file.ID)
+		if err != nil {
+			t.Fatalf("Error uploading: %s", err)
+		}
+		defer body.Close()
+
+		buf := new(strings.Builder)
+		if _, err := io.Copy(buf, body); err != nil {
+			t.Fatalf("error reading body from store: %s", err)
+		}
+		if buf.String() != fileContents {
+			t.Errorf("File contents does not match: %s", cmp.Diff(buf.String(), fileContents))
+		}
+	})
+}