kubenetworks/kubevpn

package syncthing

import (
    "bytes"
    "context"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
    "path"
    "time"

    "github.com/syncthing/syncthing/lib/config"

    config2 "github.com/wencaiwulue/kubevpn/v2/pkg/config"
)

type Client struct {
    GUIAddress string
    client     *http.Client
}

func NewClient(addr string) *Client {
    c := &Client{
        GUIAddress: addr,
        client:     &http.Client{Timeout: 5 * time.Second},
    }
    return c
}

func (c *Client) GetConfig(ctx context.Context) (*config.Configuration, error) {
    buf, err := c.Call(ctx, "rest/config", "GET", nil)
    var configuration config.Configuration
    err = json.Unmarshal(buf, &configuration)
    if err != nil {
        return nil, err
    }
    return &configuration, nil
}

func (c *Client) PutConfig(ctx context.Context, conf *config.Configuration) error {
    marshal, err := json.Marshal(conf)
    if err != nil {
        return err
    }
    _, err = c.Call(ctx, "rest/config", "PUT", marshal)
    return err
}

func (c *Client) Call(ctx context.Context, uri, method string, body []byte) ([]byte, error) {
    var url = path.Join(c.GUIAddress, uri)
    req, err := http.NewRequest(method, fmt.Sprintf("http://%s", url), bytes.NewBuffer(body))
    if err != nil {
        return nil, fmt.Errorf("failed to initialize syncthing API request: %w", err)
    }
    req = req.WithContext(ctx)
    req.Header.Set("X-API-Key", config2.SyncthingAPIKey)
    resp, err := c.client.Do(req)
    if err != nil {
        return nil, fmt.Errorf("failed to call syncthing [%s]: %w", uri, err)
    }
    defer resp.Body.Close()
    if resp.StatusCode != 200 {
        return nil, fmt.Errorf("unexpected response from syncthing [%s | %d]: %s", req.URL.String(), resp.StatusCode, string(body))
    }
    body, err = io.ReadAll(resp.Body)
    if err != nil {
        return nil, fmt.Errorf("failed to read response from syncthing [%s]: %w", uri, err)
    }
    return body, nil
}