Initial commit.

rss/rss.go

@@ -0,0 +1,55 @@
+package rss
+
+import (
+	"errors"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"time"
+
+	"go.dev.pztrn.name/rsser/configuration"
+	"go.dev.pztrn.name/rsser/outputs"
+)
+
+var (
+	errNoOutputs = errors.New("no outputs")
+	errRSS       = errors.New("RSS controller")
+)
+
+// RSS is an RSS feeds parsing controlling structure.
+type RSS struct {
+	cfg        *configuration.Config
+	httpClient *http.Client
+	outputs    []outputs.Output
+}
+
+// New creates new RSS parsing instance.
+func New(cfg *configuration.Config, outs []outputs.Output) (*RSS, error) {
+	rss := &RSS{
+		cfg:     cfg,
+		outputs: outs,
+	}
+
+	if err := rss.initialize(); err != nil {
+		return nil, fmt.Errorf("%w: %w", errRSS, err)
+	}
+
+	return rss, nil
+}
+
+func (r *RSS) initialize() error {
+	if len(r.outputs) == 0 {
+		return fmt.Errorf("initialize: %w", errNoOutputs)
+	}
+
+	slog.Info(
+		"HTTP client configuration.",
+		"request_timeout_seconds", r.cfg.RSS.HTTPClient.RequestTimeoutSeconds,
+	)
+
+	r.httpClient = &http.Client{
+		Timeout: time.Second * time.Duration(r.cfg.RSS.HTTPClient.RequestTimeoutSeconds),
+	}
+
+	return nil
+}