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focalboard/server/client/client.go
2021-03-21 16:28:26 +08:00

218 lines
5.0 KiB
Go

package client
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"strings"
"github.com/mattermost/focalboard/server/model"
)
const (
API_URL_SUFFIX = "/api/v1"
)
type Response struct {
StatusCode int
Error error
Header http.Header
}
func BuildResponse(r *http.Response) *Response {
return &Response{
StatusCode: r.StatusCode,
Header: r.Header,
}
}
func BuildErrorResponse(r *http.Response, err error) *Response {
statusCode := 0
header := make(http.Header)
if r != nil {
statusCode = r.StatusCode
header = r.Header
}
return &Response{
StatusCode: statusCode,
Error: err,
Header: header,
}
}
func closeBody(r *http.Response) {
if r.Body != nil {
_, _ = io.Copy(ioutil.Discard, r.Body)
_ = r.Body.Close()
}
}
func toJSON(v interface{}) string {
b, _ := json.Marshal(v)
return string(b)
}
type Client struct {
Url string
ApiUrl string
HttpClient *http.Client
HttpHeader map[string]string
}
func NewClient(url, sessionToken string) *Client {
url = strings.TrimRight(url, "/")
headers := map[string]string{
"X-Requested-With": "XMLHttpRequest",
"Authorization": "Bearer " + sessionToken,
}
return &Client{url, url + API_URL_SUFFIX, &http.Client{}, headers}
}
func (c *Client) DoApiGet(url, etag string) (*http.Response, error) {
return c.DoApiRequest(http.MethodGet, c.ApiUrl+url, "", etag)
}
func (c *Client) DoApiPost(url, data string) (*http.Response, error) {
return c.DoApiRequest(http.MethodPost, c.ApiUrl+url, data, "")
}
func (c *Client) doApiPostBytes(url string, data []byte) (*http.Response, error) {
return c.doApiRequestBytes(http.MethodPost, c.ApiUrl+url, data, "")
}
func (c *Client) DoApiPut(url, data string) (*http.Response, error) {
return c.DoApiRequest(http.MethodPut, c.ApiUrl+url, data, "")
}
func (c *Client) doApiPutBytes(url string, data []byte) (*http.Response, error) {
return c.doApiRequestBytes(http.MethodPut, c.ApiUrl+url, data, "")
}
func (c *Client) DoApiDelete(url string) (*http.Response, error) {
return c.DoApiRequest(http.MethodDelete, c.ApiUrl+url, "", "")
}
func (c *Client) DoApiRequest(method, url, data, etag string) (*http.Response, error) {
return c.doApiRequestReader(method, url, strings.NewReader(data), etag)
}
func (c *Client) doApiRequestBytes(method, url string, data []byte, etag string) (*http.Response, error) {
return c.doApiRequestReader(method, url, bytes.NewReader(data), etag)
}
func (c *Client) doApiRequestReader(method, url string, data io.Reader, etag string) (*http.Response, error) {
rq, err := http.NewRequest(method, url, data)
if err != nil {
return nil, err
}
if c.HttpHeader != nil && len(c.HttpHeader) > 0 {
for k, v := range c.HttpHeader {
rq.Header.Set(k, v)
}
}
rp, err := c.HttpClient.Do(rq)
if err != nil || rp == nil {
return nil, err
}
if rp.StatusCode == 304 {
return rp, nil
}
if rp.StatusCode >= 300 {
defer closeBody(rp)
b, err := ioutil.ReadAll(rp.Body)
if err != nil {
return rp, fmt.Errorf("error when parsing response with code %d: %w", rp.StatusCode, err)
}
return rp, fmt.Errorf(string(b))
}
return rp, nil
}
func (c *Client) GetBlocksRoute() string {
return "/blocks"
}
func (c *Client) GetBlockRoute(id string) string {
return fmt.Sprintf("%s/%s", c.GetBlocksRoute(), id)
}
func (c *Client) GetSubtreeRoute(id string) string {
return fmt.Sprintf("%s/subtree", c.GetBlockRoute(id))
}
func (c *Client) GetBlocks() ([]model.Block, *Response) {
r, err := c.DoApiGet(c.GetBlocksRoute(), "")
if err != nil {
return nil, BuildErrorResponse(r, err)
}
defer closeBody(r)
return model.BlocksFromJSON(r.Body), BuildResponse(r)
}
func (c *Client) InsertBlocks(blocks []model.Block) (bool, *Response) {
r, err := c.DoApiPost(c.GetBlocksRoute(), toJSON(blocks))
if err != nil {
return false, BuildErrorResponse(r, err)
}
defer closeBody(r)
return true, BuildResponse(r)
}
func (c *Client) DeleteBlock(blockID string) (bool, *Response) {
r, err := c.DoApiDelete(c.GetBlockRoute(blockID))
if err != nil {
return false, BuildErrorResponse(r, err)
}
defer closeBody(r)
return true, BuildResponse(r)
}
func (c *Client) GetSubtree(blockID string) ([]model.Block, *Response) {
r, err := c.DoApiGet(c.GetSubtreeRoute(blockID), "")
if err != nil {
return nil, BuildErrorResponse(r, err)
}
defer closeBody(r)
return model.BlocksFromJSON(r.Body), BuildResponse(r)
}
// Sharing
func (c *Client) GetSharingRoute(rootID string) string {
return fmt.Sprintf("/sharing/%s", rootID)
}
func (c *Client) GetSharing(rootID string) (*model.Sharing, *Response) {
r, err := c.DoApiGet(c.GetSharingRoute(rootID), "")
if err != nil {
return nil, BuildErrorResponse(r, err)
}
defer closeBody(r)
sharing := model.SharingFromJSON(r.Body)
return &sharing, BuildResponse(r)
}
func (c *Client) PostSharing(sharing model.Sharing) (bool, *Response) {
r, err := c.DoApiPost(c.GetSharingRoute(sharing.ID), toJSON(sharing))
if err != nil {
return false, BuildErrorResponse(r, err)
}
defer closeBody(r)
return true, BuildResponse(r)
}