129 lines
3.8 KiB
Go
129 lines
3.8 KiB
Go
package agents
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"path/filepath"
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"strings"
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"time"
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"g.fc.run/misc/byre/internal/api"
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"g.fc.run/misc/byre/internal/git"
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"g.fc.run/misc/byre/internal/mcp"
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"g.fc.run/misc/byre/internal/store"
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)
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func (m *Manager) CreateTask(ctx context.Context, project api.Project, title, createdBy, base string) (api.Task, error) {
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id := store.NewID()
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t := api.Task{
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Id: id,
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ProjectId: project.Id,
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Title: title,
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Branch: "byre/" + id,
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WorktreePath: filepath.Join(m.worktreeRoot, project.Id, id),
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Status: api.TaskStatusActive,
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CreatedBy: createdBy,
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CreatedAt: time.Now().UTC(),
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}
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var err error
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t.BaseRef, err = git.AddWorktree(project.RepoPath, t.WorktreePath, t.Branch, base)
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if err != nil {
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return api.Task{}, err
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}
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err = m.store.CreateTask(ctx, t)
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if err != nil {
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return api.Task{}, err
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}
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return t, nil
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}
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type createTaskArgs struct {
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Title string `json:"title"`
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Prompt string `json:"prompt"`
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Base string `json:"base"`
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Model string `json:"model"`
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}
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func (m *Manager) createTaskTool(l *live) mcp.Tool {
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return mcp.Tool{
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Name: "create_task",
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Description: "Create a new byre task in this project, with its own branch and worktree, and start an agent on it with prompt as its first message. " +
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"Use it to run independent pieces of work in parallel. The new agent sees nothing of your context, so the prompt must be a complete brief. " +
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"base picks the starting commit: default_branch starts from the project's default branch; this_task starts from this task's HEAD, " +
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"which includes your committed work but not uncommitted edits (byre commits at the end of each turn). " +
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"Returns at once with the new task's id; the new agent runs on its own.",
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InputSchema: json.RawMessage(`{
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"type": "object",
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"properties": {
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"title": {"type": "string", "description": "Short task title, shown in the task list."},
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"prompt": {"type": "string", "description": "The new agent's first message: a complete, self-contained brief."},
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"base": {"type": "string", "enum": ["default_branch", "this_task"]},
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"model": {"type": "string", "description": "Model for the new agent. Defaults to this session's model."}
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},
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"required": ["title", "prompt", "base"]
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}`),
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Handler: func(ctx context.Context, raw json.RawMessage) (string, error) {
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return m.createTaskFromAgent(ctx, l, raw)
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},
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}
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}
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func (m *Manager) createTaskFromAgent(ctx context.Context, l *live, raw json.RawMessage) (string, error) {
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args := createTaskArgs{}
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err := json.Unmarshal(raw, &args)
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if err != nil {
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return "", fmt.Errorf("malformed create_task call: %w", err)
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}
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if strings.TrimSpace(args.Title) == "" || strings.TrimSpace(args.Prompt) == "" {
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return "", errors.New("title and prompt are required")
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}
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sess, err := m.store.GetSession(ctx, l.id)
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if err != nil {
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return "", err
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}
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project, err := m.store.GetProject(ctx, l.projectID)
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if err != nil {
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return "", err
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}
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creator, err := m.store.GetUser(ctx, sess.CreatedBy)
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if err != nil {
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return "", err
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}
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base := ""
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switch args.Base {
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case "default_branch":
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base = project.DefaultBranch
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case "this_task":
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base, err = git.Head(l.dir)
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if err != nil {
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return "", err
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}
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default:
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return "", fmt.Errorf("base must be default_branch or this_task, not %q", args.Base)
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}
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model := args.Model
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if model == "" {
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model = sess.Model
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}
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task, err := m.CreateTask(ctx, project, args.Title, creator.Login, base)
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if err != nil {
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return "", err
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}
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_, err = m.create(ctx, task, creator, args.Prompt, model, agentActor, nil)
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if err != nil {
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return "", fmt.Errorf("task %s created, but its agent did not start: %w", task.Id, err)
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}
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return fmt.Sprintf("Task %s %q created from %s and its agent started.", task.Id, task.Title, task.BaseRef), nil
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}
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