package agents_test

import (
	"fmt"
	"strings"
	"testing"
	"time"

	"g.fc.run/misc/byre/internal/api"
	"g.fc.run/misc/byre/internal/store"
)

func leadIdle(ev api.Event) bool {
	return ev.Kind == "session.state" && ev.Owner != nil && ev.Payload["state"] == string(api.AgentSessionStateIdle)
}

func TestLeadSignalsAndShow(t *testing.T) {
	t.Parallel()
	e := newEnv(t)
	m := e.manager()

	lead, err := m.MessageLead(e.ctx, e.user, "Reply with the single word ready.", testModel, nil)
	if err != nil {
		t.Fatalf("message lead: %v", err)
	}
	if lead.Owner != login || lead.TaskId != "" || lead.Role != api.Lead {
		t.Fatalf("lead session %+v", lead)
	}
	e.waitFor("lead idle", leadIdle)

	worker := api.AgentSession{
		Id: store.NewID(), TaskId: e.task.Id, Vendor: api.Claude, VendorSessionId: store.NewID(),
		State: api.AgentSessionStateIdle, Role: api.Implementer, CreatedBy: login, CreatedAt: time.Now().UTC(),
	}
	err = e.store.CreateSession(e.ctx, worker, e.project.Id)
	if err != nil {
		t.Fatalf("create worker session: %v", err)
	}
	err = e.store.CreateInboxItem(e.ctx, api.InboxItem{
		Id: store.NewID(), ProjectId: e.project.Id, TaskId: e.task.Id, AgentSessionId: worker.Id, ThreadId: "t1",
		Kind: api.Report, Priority: api.Fyi, Payload: map[string]any{"text": "Finished the parser. The tests pass."},
		State: api.Open, CreatedAt: time.Now().UTC(), Responses: []api.InboxResponse{},
	})
	if err != nil {
		t.Fatalf("file report: %v", err)
	}
	created := e.waitFor("inbox.created", func(ev api.Event) bool { return ev.Kind == "inbox.created" })
	m.Observe(created[len(created)-1])

	signalled := e.waitFor("signal delivered", func(ev api.Event) bool {
		return ev.Kind == "user.message" && ev.Owner != nil && ev.Actor == "byre"
	})
	text := signalled[len(signalled)-1].Payload["text"].(string)
	if !strings.Contains(text, "Finished the parser") || !strings.Contains(text, e.task.Id) {
		t.Fatalf("signal text %q", text)
	}
	e.waitFor("lead idle after signal", leadIdle)

	_, err = m.MessageLead(e.ctx, e.user, "Call the show tool with task_id "+e.task.Id+", tabs [\"inbox\"] and tab \"inbox\". Then say done.", "", nil)
	if err != nil {
		t.Fatalf("message lead: %v", err)
	}
	e.waitFor("focus.updated by the lead", func(ev api.Event) bool {
		return ev.Kind == "focus.updated" && ev.Actor == login+" (lead)"
	})
	f, err := e.store.GetFocus(e.ctx, login)
	if err != nil {
		t.Fatalf("get focus: %v", err)
	}
	if f.TaskId == nil || *f.TaskId != e.task.Id || f.ProjectId == nil || *f.ProjectId != e.project.Id || f.Tab != api.TabInbox {
		t.Fatalf("focus %+v", f)
	}
	e.waitFor("lead idle after show", leadIdle)

	m.SetPaneFocus(login, true)
	_, err = m.MessageLead(e.ctx, e.user, "Call the show tool with task_id "+e.task.Id+", tabs [\"changes\"] and tab \"changes\". Then say done.", "", nil)
	if err != nil {
		t.Fatalf("message lead: %v", err)
	}
	e.waitFor("show refused", func(ev api.Event) bool {
		return ev.Kind == "agent.tool_result" && ev.Owner != nil && strings.Contains(fmt.Sprint(ev.Payload), "working in the right pane")
	})
	e.waitFor("lead idle after refused show", leadIdle)
	f, err = e.store.GetFocus(e.ctx, login)
	if err != nil {
		t.Fatalf("get focus: %v", err)
	}
	if f.Tab != api.TabInbox {
		t.Fatalf("focus moved while the pane was focused: %+v", f)
	}
}

func TestFocusProject(t *testing.T) {
	t.Parallel()
	e := newEnv(t)
	m := e.manager()

	err := m.SetFocus(e.ctx, login, api.Focus{ProjectId: &e.project.Id, Tabs: []api.TaskTab{api.TabTodo}, Tab: api.TabTodo}, login)
	if err != nil {
		t.Fatalf("focus project: %v", err)
	}
	f, err := e.store.GetFocus(e.ctx, login)
	if err != nil {
		t.Fatalf("get focus: %v", err)
	}
	if f.TaskId != nil || f.ProjectId == nil || *f.ProjectId != e.project.Id || f.Tab != api.TabTodo {
		t.Fatalf("focus %+v", f)
	}

	other := "nope"
	err = m.SetFocus(e.ctx, login, api.Focus{TaskId: &e.task.Id, ProjectId: &other, Tabs: []api.TaskTab{}, Tab: api.TabTranscript}, login)
	if err != nil {
		t.Fatalf("focus task: %v", err)
	}
	f, err = e.store.GetFocus(e.ctx, login)
	if err != nil {
		t.Fatalf("get focus: %v", err)
	}
	if f.TaskId == nil || *f.TaskId != e.task.Id || f.ProjectId == nil || *f.ProjectId != e.project.Id {
		t.Fatalf("focus %+v", f)
	}

	err = m.SetFocus(e.ctx, login, api.Focus{ProjectId: &other, Tabs: []api.TaskTab{}, Tab: api.TabTodo}, login)
	if err == nil {
		t.Fatal("focus on an unknown project was accepted")
	}
}