FdandClaude Opus 4.7
e783284881
- Add core Middleware support via `core.Default.Use()` - Implement download command handlers for YouTube, Instagram, TikTok, and Facebook - Add regex-based URL validation for all download commands - Add API client for fetching download links - Add helpers for uploading and sending media to WhatsApp Co-Authored-By: Claude Opus 4.7 <[email protected]>
120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package api
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"strings"
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"sync"
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"time"
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"github.com/gabriel-vasile/mimetype"
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)
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// Client is the shared HTTP client for the Mono REST API.
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type Client struct {
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BaseURL string
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APIKey string
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}
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const MaxDownloadBytes int64 = 256 * 1024 * 1024
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var (
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defaultClient *Client
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defaultOnce sync.Once
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httpClient = &http.Client{Timeout: 2 * time.Minute}
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)
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func initDefault() {
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baseURL := os.Getenv("MONO_BASEURL")
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if baseURL == "" {
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baseURL = "https://mono.fdvky.me/api/v1"
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}
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defaultClient = &Client{
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BaseURL: strings.TrimRight(baseURL, "/"),
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APIKey: os.Getenv("MONO_API_KEY"),
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}
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}
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// Default returns the shared API client, initialized lazily so env vars
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// loaded via godotenv in main.init() are already available.
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func Default() *Client {
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defaultOnce.Do(initDefault)
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return defaultClient
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}
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// Get calls the API and decodes the JSON response into target.
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func (c *Client) Get(path string, params map[string]string, target any) error {
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u, err := url.Parse(c.BaseURL + path)
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if err != nil {
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return fmt.Errorf("api url: %w", err)
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}
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q := u.Query()
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for k, v := range params {
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q.Set(k, v)
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}
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u.RawQuery = q.Encode()
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req, err := http.NewRequest("GET", u.String(), nil)
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if err != nil {
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return fmt.Errorf("api request: %w", err)
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}
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if c.APIKey != "" {
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req.Header.Set("X-API-Key", c.APIKey)
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}
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resp, err := httpClient.Do(req)
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if err != nil {
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return fmt.Errorf("api: %w", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return fmt.Errorf("api %d: %s", resp.StatusCode, strings.TrimSpace(string(body)))
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}
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return json.NewDecoder(resp.Body).Decode(target)
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}
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// Download fetches a URL and returns the raw bytes and MIME type.
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func Download(rawURL string) ([]byte, string, error) {
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req, err := http.NewRequest("GET", rawURL, nil)
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if err != nil {
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return nil, "", fmt.Errorf("download request: %w", err)
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}
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resp, err := httpClient.Do(req)
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if err != nil {
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return nil, "", fmt.Errorf("download: %w", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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body, _ := io.ReadAll(io.LimitReader(resp.Body, 4096))
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return nil, "", fmt.Errorf("download %d: %s", resp.StatusCode, strings.TrimSpace(string(body)))
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}
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if resp.ContentLength > MaxDownloadBytes {
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return nil, "", fmt.Errorf("download too large: %d bytes", resp.ContentLength)
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}
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mime := resp.Header.Get("Content-Type")
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data, err := io.ReadAll(io.LimitReader(resp.Body, MaxDownloadBytes+1))
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if err != nil {
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return nil, "", fmt.Errorf("read: %w", err)
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}
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if int64(len(data)) > MaxDownloadBytes {
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return nil, "", fmt.Errorf("download too large: over %d bytes", MaxDownloadBytes)
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}
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if mime == "" || mime == "application/octet-stream" {
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mime = mimetype.Detect(data).String()
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}
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return data, mime, nil
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}
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