package fetcher

import (
	"net/http"
	"time"

	"golang.org/x/time/rate"
)

// Client encapsulates HTTP client behavior for fetching Reddit JSON endpoints.
type Client struct {
	httpClient *http.Client
	userAgent  string
	limiter    *rate.Limiter
	retryLimit int
}

// NewClient constructs a fetcher Client.
// - userAgent: User-Agent header
// - timeout: HTTP client timeout
// - rateDelay: minimum duration between requests (rate limiter)
// - burst: burst size (usually equal to concurrency)
// - retryLimit: max retries per request
func NewClient(userAgent string, timeout time.Duration, rateDelay time.Duration, burst int, retryLimit int) *Client {
	hc := &http.Client{Timeout: timeout}
	lim := rate.NewLimiter(rate.Every(rateDelay), burst)
	return &Client{httpClient: hc, userAgent: userAgent, limiter: lim, retryLimit: retryLimit}
}