package lib

import (
	"fmt"
	"path/filepath"

	"github.com/devrites/devrites/internal/devritespaths"
)

// workspaceArtifactLimit bounds one artifact read. Slice extraction must keep
// working on a workspace whose tasks.md is over budget: the budget gate flags the
// file, while Build still reads its own slice instead of the whole document.
const workspaceArtifactLimit = 16 << 20

func readWorkspaceArtifact(root, slug, name string) ([]byte, error) {
	workspace, err := devritespaths.ExistingFeatureDirChecked(root, slug)
	if err != nil {
		return nil, fmt.Errorf("workspace artifact: workspace unavailable: %w", err)
	}
	path := filepath.Join(workspace, name)
	raw, err := readBoundedRegularFile(path, workspaceArtifactLimit)
	if err != nil {
		return nil, fmt.Errorf("workspace artifact: %s: %w", name, err)
	}
	return raw, nil
}