hook,cmd/knot: add knot hook command

hook/hook.go

···
+package hook
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/urfave/cli/v3"
+)
+
+// The hook command is nested like so:
+//
+//	knot hook --[flags] [hook]
+func Command() *cli.Command {
+	return &cli.Command{
+		Name:  "hook",
+		Usage: "run git hooks",
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:  "git-dir",
+				Usage: "base directory for git repos",
+			},
+			&cli.StringFlag{
+				Name:  "user-did",
+				Usage: "git user's did",
+			},
+			&cli.StringFlag{
+				Name:  "user-handle",
+				Usage: "git user's handle",
+			},
+			&cli.StringFlag{
+				Name:  "internal-api",
+				Usage: "endpoint for the internal API",
+				Value: "http://localhost:5444",
+			},
+		},
+		Commands: []*cli.Command{
+			{
+				Name:   "post-recieve",
+				Usage:  "sends a post-recieve hook to the knot (waits for stdin)",
+				Action: postRecieve,
+			},
+		},
+	}
+}
+
+func postRecieve(ctx context.Context, cmd *cli.Command) error {
+	gitDir := cmd.String("git-dir")
+	userDid := cmd.String("user-did")
+	userHandle := cmd.String("user-handle")
+	endpoint := cmd.String("internal-api")
+
+	payloadReader := bufio.NewReader(os.Stdin)
+	payload, _ := payloadReader.ReadString('\n')
+
+	client := &http.Client{}
+
+	req, err := http.NewRequest("POST", endpoint+"/hooks/post-receive", strings.NewReader(payload))
+	if err != nil {
+		return fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "text/plain")
+	req.Header.Set("X-Git-Dir", gitDir)
+	req.Header.Set("X-Git-User-Did", userDid)
+	req.Header.Set("X-Git-User-Handle", userHandle)
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("failed to execute request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	return nil
+}