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// Package httpctx provides HTTP client defaults and context helpers for outbound
// Gemini API calls and remote asset downloads.
package httpctx
import (
"context"
"fmt"
"net/http"
"time"
"google.golang.org/genai"
)
const (
// GenAIHTTPTimeout bounds each Google GenAI SDK HTTP request.
GenAIHTTPTimeout = 30 * time.Minute
// ImageDownloadTimeout limits fetches of remote image URLs.
ImageDownloadTimeout = 60 * time.Second
// OperationTimeoutDefault caps a full high-level operation when the caller did not set a deadline.
OperationTimeoutDefault = 15 * time.Minute
// ListModelsTimeout bounds model-listing CLI calls.
ListModelsTimeout = 3 * time.Minute
// StoryPageImageTimeout bounds a single comic page image pipeline when no parent deadline exists.
StoryPageImageTimeout = 25 * time.Minute
// VeoCLIPerVideoTimeout bounds one gallery-to-video run when the CLI passes Background.
VeoCLIPerVideoTimeout = 25 * time.Minute
// SingleWordProcessTimeout caps a single vocabulary processing operation when the caller uses Background.
SingleWordProcessTimeout = 10 * time.Minute
)
// GenAIHTTPClient returns an http.Client for google.golang.org/genai.
func GenAIHTTPClient() *http.Client {
return &http.Client{Timeout: GenAIHTTPTimeout}
}
// ImageDownloadHTTPClient returns a client for generic image URL downloads.
func ImageDownloadHTTPClient() *http.Client {
return &http.Client{Timeout: ImageDownloadTimeout}
}
// NewGenAIClient wraps genai.NewClient, setting HTTPClient when the config does
// not supply one so outbound requests never rely on an unbounded default.
func NewGenAIClient(ctx context.Context, cfg *genai.ClientConfig) (*genai.Client, error) {
if cfg == nil {
cfg = &genai.ClientConfig{}
}
merged := *cfg
if merged.HTTPClient == nil {
merged.HTTPClient = GenAIHTTPClient()
}
client, err := genai.NewClient(ctx, &merged)
if err != nil {
return nil, fmt.Errorf("create genai client: %w", err)
}
return client, nil
}
// WithTimeoutUnlessSet returns a child context with timeout d when ctx has no
// deadline. If ctx already has a deadline, it returns ctx and a no-op cancel.
func WithTimeoutUnlessSet(ctx context.Context, d time.Duration) (context.Context, context.CancelFunc) {
if ctx == nil {
ctx = context.Background()
}
if _, ok := ctx.Deadline(); ok {
return ctx, func() {}
}
return context.WithTimeout(ctx, d)
}
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