152 lines
3.5 KiB
Go
152 lines
3.5 KiB
Go
package main
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import (
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"context"
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"fmt"
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"io"
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"log"
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"net/http"
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"strconv"
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"time"
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"encoding/json"
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"golang.org/x/time/rate"
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)
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const baseURL = "https://api.solidarity.tech/v1"
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type Client struct {
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key string
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dryRun bool
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http *http.Client
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limiter *rate.Limiter
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}
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func NewClient(key string, dryRun bool) *Client {
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return &Client{
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key: key,
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dryRun: dryRun,
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http: &http.Client{Timeout: 30 * time.Second},
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// 60 requests per 30 seconds: 2/sec sustained, burst of 60.
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limiter: rate.NewLimiter(2, 60),
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}
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}
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// do applies the rate limit, retries once on 429, and returns the raw body.
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func (c *Client) do(ctx context.Context, method, path string, body io.Reader) ([]byte, error) {
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if err := c.limiter.Wait(ctx); err != nil {
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return nil, err
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}
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req, err := http.NewRequestWithContext(ctx, method, baseURL+path, body)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Authorization", "Bearer "+c.key)
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req.Header.Set("Accept", "application/json")
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if body != nil {
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req.Header.Set("Content-Type", "application/json")
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}
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resp, err := c.http.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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if resp.StatusCode == http.StatusTooManyRequests {
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wait := 30 * time.Second
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if s := resp.Header.Get("Retry-After"); s != "" {
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if secs, err := strconv.Atoi(s); err == nil {
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wait = time.Duration(secs) * time.Second
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}
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}
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log.Printf("rate limited; waiting %s", wait)
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select {
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case <-time.After(wait):
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case <-ctx.Done():
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return nil, ctx.Err()
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}
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return c.do(ctx, method, path, body)
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}
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raw, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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if resp.StatusCode < 200 || resp.StatusCode > 299 {
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return nil, fmt.Errorf("%s %s: %d: %s", method, path, resp.StatusCode, truncate(raw))
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}
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return raw, nil
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}
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func truncate(b []byte) string {
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if len(b) > 300 {
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return string(b[:300]) + "..."
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}
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return string(b)
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}
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// apiUser mirrors the ST user payload. Custom properties are heterogeneous,
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// so they stay raw until read individually.
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type apiUser struct {
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ID int64 `json:"id"`
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Email string `json:"email"`
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ChapterID int64 `json:"chapter_id"`
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CustomProps map[string]json.RawMessage `json:"custom_user_properties"`
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}
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func (a apiUser) toUser() *User {
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return &User{
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ID: a.ID,
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Email: a.Email,
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ChapterID: a.ChapterID,
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Department: departmentOf(a.CustomProps),
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}
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}
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// departmentOf reads the free-text "department-1" property.
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func departmentOf(props map[string]json.RawMessage) string {
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raw, ok := props["department-1"]
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if !ok {
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return ""
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}
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var s string
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if err := json.Unmarshal(raw, &s); err != nil {
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return ""
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}
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return s
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}
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// isRep tolerates all three shapes "department-rep" has been seen in:
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// array of options, bare string, bare bool.
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func isRep(props map[string]json.RawMessage) bool {
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raw, ok := props["department-rep"]
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if !ok || len(raw) == 0 {
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return false
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}
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var arr []struct{ Value string }
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if err := json.Unmarshal(raw, &arr); err == nil {
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return len(arr) > 0
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}
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var s string
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if err := json.Unmarshal(raw, &s); err == nil {
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return s != "" && s != "false"
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}
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var b bool
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if err := json.Unmarshal(raw, &b); err == nil {
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return b
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}
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return false
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}
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func (c *Client) GetUser(ctx context.Context, id int64) (*User, error) {
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raw, err := c.do(ctx, http.MethodGet, "/users/"+strconv.FormatInt(id, 10), nil)
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if err != nil {
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return nil, err
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}
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var u apiUser
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if err := json.Unmarshal(raw, &u); err != nil {
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return nil, err
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}
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return u.toUser(), nil
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}
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