Initial commit

scripts/rsw/internal/wiki/client.go

@@ -0,0 +1,57 @@
+package wiki
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+const userAgent = "rsw-cli/1.0 (RuneScape Wiki CLI tool; https://github.com/runescape-wiki/rsw)"
+
+// Client wraps HTTP requests to the MediaWiki API.
+type Client struct {
+	baseURL    string
+	httpClient *http.Client
+}
+
+// NewClient creates a wiki API client for the given base URL.
+func NewClient(baseURL string) *Client {
+	return &Client{
+		baseURL: baseURL,
+		httpClient: &http.Client{
+			Timeout: 15 * time.Second,
+		},
+	}
+}
+
+// get performs a GET request with the given parameters and decodes JSON into dest.
+func (c *Client) get(params url.Values, dest interface{}) error {
+	params.Set("format", "json")
+
+	reqURL := fmt.Sprintf("%s?%s", c.baseURL, params.Encode())
+	req, err := http.NewRequest("GET", reqURL, nil)
+	if err != nil {
+		return fmt.Errorf("creating request: %w", err)
+	}
+	req.Header.Set("User-Agent", userAgent)
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("executing request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("API returned status %d: %s", resp.StatusCode, string(body))
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(dest); err != nil {
+		return fmt.Errorf("decoding response: %w", err)
+	}
+
+	return nil
+}