package projectinstance

import (
	"context"
	"errors"
	"testing"

	"chat-agent-system/internal/workflowdef"
)

type countingMaterializer struct {
	calls     int
	projectID int64
}

func (c *countingMaterializer) MaterializeTemplateDocs(_ context.Context, projectID int64, _ WorkflowPlan) error {
	c.calls++
	c.projectID = projectID
	return nil
}

func TestUpdateLivePlanKeepsWorkflowAndMaterializes(t *testing.T) {
	ctx := context.Background()
	store := newMemStore()
	_ = SeedProjectMeta(store, 42, LifecyclePlanning, "", 1, 0)
	mat := &countingMaterializer{}
	svc := NewService(store, testResolver(), nil, nil)
	svc.SetTemplateDocMaterializer(mat)

	if _, err := svc.SaveWorkflowPlan(ctx, 42, 1, true, SavePlanInput{
		Plan: validPlan(), ExpectedPlanRevision: 0, ExpectedSelectionVersion: 1,
	}); err != nil {
		t.Fatal(err)
	}
	preview, err := svc.ActivationPreview(ctx, 42, 1, true)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := svc.Activate(ctx, 42, 1, true, ActivateInput{
		ConfirmationToken:      preview.ConfirmationToken,
		ExpectedProjectVersion: preview.ExpectedProjectVersion,
		ExpectedPlanRevision:   preview.ExpectedPlanRevision,
	}); err != nil {
		t.Fatal(err)
	}
	if mat.calls != 1 || mat.projectID != 42 {
		t.Fatalf("activate materialize calls=%d project=%d", mat.calls, mat.projectID)
	}

	settings, err := svc.GetSettings(ctx, 42, 1, true)
	if err != nil {
		t.Fatal(err)
	}
	if settings.PlanEditMode != PlanEditLive {
		t.Fatalf("plan_edit_mode=%s", settings.PlanEditMode)
	}
	plan := *settings.Plan
	plan.Stages[0].DocTasks[0].Duties.ApproverUserID = 4
	updated, err := svc.UpdateLivePlan(ctx, 42, 1, true, SavePlanInput{
		Plan: plan, ExpectedPlanRevision: settings.WorkflowPlanRevision, LiveEdit: true,
	})
	if err != nil {
		t.Fatal(err)
	}
	if updated.Plan.Stages[0].DocTasks[0].Duties.ApproverUserID != 4 {
		t.Fatalf("duty not updated: %+v", updated.Plan.Stages[0].DocTasks[0].Duties)
	}
	if updated.Plan.WorkflowDefinitionKey != plan.WorkflowDefinitionKey {
		t.Fatal("workflow key changed")
	}
	if mat.calls != 2 {
		t.Fatalf("live update materialize calls=%d", mat.calls)
	}

	switched := plan
	switched.WorkflowDefinitionKey = "other"
	_, err = svc.UpdateLivePlan(ctx, 42, 1, true, SavePlanInput{
		Plan: switched, ExpectedPlanRevision: updated.WorkflowPlanRevision,
	})
	if !errors.Is(err, ErrWorkflowSwitchFrozen) {
		t.Fatalf("expected switch frozen, got %v", err)
	}
}

func TestUpdateLivePlanRejectsReadonlyProject(t *testing.T) {
	svc := NewService(newMemStore(), testResolver(), nil, nil)
	_, err := svc.UpdateLivePlan(context.Background(), readonlyLivePlanProjectID, 1, true, SavePlanInput{
		Plan: validPlan(), ExpectedPlanRevision: 1, LiveEdit: true,
	})
	if !errors.Is(err, ErrPlanFrozen) {
		t.Fatalf("expected frozen, got %v", err)
	}
}

func TestPlanEditModeFrozenForReadonlyLiveProject(t *testing.T) {
	ctx := context.Background()
	store := newMemStore()
	_ = SeedProjectMeta(store, readonlyLivePlanProjectID, LifecycleActive, workflowdef.OfficialKeyMain, 2, 1)
	store.live[readonlyLivePlanProjectID] = &WorkflowInstance{
		ID:                89,
		ProjectID:         readonlyLivePlanProjectID,
		WorkflowVersionID: 1,
		Status:            InstanceActive,
		ConfigRevision:    3,
		ConfigSnapshot:    validPlan(),
	}
	svc := NewService(store, testResolver(), nil, nil)
	settings, err := svc.GetSettings(ctx, readonlyLivePlanProjectID, 1, true)
	if err != nil {
		t.Fatal(err)
	}
	if settings.PlanEditMode != PlanEditFrozen {
		t.Fatalf("plan_edit_mode=%s", settings.PlanEditMode)
	}
}