Initial push to gitea

internal/summarize/claudecli.go

@@ -0,0 +1,49 @@
+package summarize
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+// ClaudeCLI shells out to the `claude` CLI in print mode. The transcript is
+// sent on stdin so we don't bump into ARG_MAX for very long services.
+type ClaudeCLI struct {
+	// Bin is the binary name; defaults to "claude".
+	Bin string
+	// Model passes through to `claude --model`. Empty leaves the CLI default.
+	Model string
+	// ExtraArgs are appended verbatim before the prompt arg.
+	ExtraArgs []string
+}
+
+func (c *ClaudeCLI) Name() string { return "claude-cli" }
+
+func (c *ClaudeCLI) Summarize(ctx context.Context, systemPrompt, userContent string) (string, error) {
+	bin := c.Bin
+	if bin == "" {
+		bin = "claude"
+	}
+	if _, err := exec.LookPath(bin); err != nil {
+		return "", fmt.Errorf("%q not on PATH: %w", bin, err)
+	}
+
+	args := []string{"-p"}
+	if c.Model != "" {
+		args = append(args, "--model", c.Model)
+	}
+	args = append(args, c.ExtraArgs...)
+	args = append(args, systemPrompt)
+
+	cmd := exec.CommandContext(ctx, bin, args...)
+	cmd.Stdin = strings.NewReader(userContent)
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return "", fmt.Errorf("%s: %w (stderr: %s)", bin, err, strings.TrimSpace(stderr.String()))
+	}
+	return strings.TrimSpace(stdout.String()), nil
+}