package intent_test

import (
	"context"
	"strings"
	"testing"

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

func TestWorkflowMatcher_SwitchProductManager(t *testing.T) {
	rec := intent.NewRecognizer()
	ctx := &intent.ContextSnapshot{
		AvailableActions: []string{"SWITCH_WORKFLOW", "QUERY_WORKFLOW"},
	}
	res, err := rec.Recognize(context.Background(), "切换到智能测试经理工作流", ctx)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentSwitchWorkflow {
		t.Fatalf("expected SWITCH_WORKFLOW, got %s", res.TopIntent.Intent)
	}
	if res.TopIntent.FilledSlots[intent.SlotTargetWorkflow] != "test_manager" {
		t.Errorf("expected test_manager, got %s", res.TopIntent.FilledSlots[intent.SlotTargetWorkflow])
	}
	if res.IntentFrameV2 == nil || res.IntentFrameV2.ActionKey != "workflow.switch" {
		t.Errorf("expected v2 action workflow.switch, got %+v", res.IntentFrameV2)
	}
}

func TestWorkflowMatcher_QueryStatus(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "当前激活的是哪个工作流？", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentQueryWorkflowStatus {
		t.Fatalf("expected QUERY_WORKFLOW_STATUS, got %s", res.TopIntent.Intent)
	}
}

func TestWorkflowMatcher_DocumentSummaryIsReadonly(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "总结一下用户初始需求表", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentQueryDocStatus {
		t.Fatalf("expected QUERY_DOC_STATUS, got %s", res.TopIntent.Intent)
	}
	if got := res.TopIntent.FilledSlots[intent.SlotQueryTopic]; got != "doc_summary" {
		t.Fatalf("query_topic=%q want doc_summary", got)
	}
	if got := res.TopIntent.FilledSlots[intent.SlotTargetDoc]; got != "用户初始需求表" {
		t.Fatalf("target_doc=%q", got)
	}
}

func TestWorkflowMatcher_LatestUploadSummarySentinel(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "总结一下我刚刚上传的这个文档", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentQueryDocStatus {
		t.Fatalf("expected QUERY_DOC_STATUS, got %s", res.TopIntent.Intent)
	}
	if got := res.TopIntent.FilledSlots[intent.SlotQueryTopic]; got != "doc_summary" {
		t.Fatalf("query_topic=%q want doc_summary", got)
	}
	if got := res.TopIntent.FilledSlots[intent.SlotTargetDoc]; got != intent.TargetDocLatestUpload {
		t.Fatalf("target_doc=%q want %q", got, intent.TargetDocLatestUpload)
	}
}

func TestWorkflowMatcher_LatestUploadWithWriteVerbNotSummary(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "根据我刚刚上传的文档生成调研报告", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent == intent.IntentQueryDocStatus &&
		res.TopIntent.FilledSlots[intent.SlotQueryTopic] == "doc_summary" {
		t.Fatalf("write+upload must not be classified as doc_summary, got %+v", res.TopIntent)
	}
}

func TestWorkflowMatcher_HelpNotCasualChat(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "这个系统能做什么？", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentHelpCapabilities {
		t.Fatalf("expected HELP_CAPABILITIES, got %s", res.TopIntent.Intent)
	}
}

func TestWorkflowMatcher_UnsupportedAction(t *testing.T) {
	rec := intent.NewRecognizer()
	res, err := rec.Recognize(context.Background(), "帮我把这条回复下载下来", nil)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentUnsupportedAction {
		t.Fatalf("expected UNSUPPORTED_ACTION, got %s", res.TopIntent.Intent)
	}
}

func TestWorkflowMatcher_NonCreatorCapabilityHint(t *testing.T) {
	rec := intent.NewRecognizer()
	ctx := &intent.ContextSnapshot{
		AvailableActions: []string{"QUERY_PROGRESS"},
	}
	res, err := rec.Recognize(context.Background(), "切换到产品经理工作流", ctx)
	if err != nil {
		t.Fatalf("recognize: %v", err)
	}
	if res.TopIntent.Intent != intent.IntentSwitchWorkflow {
		t.Fatalf("expected semantic SWITCH_WORKFLOW, got %s", res.TopIntent.Intent)
	}
	if res.TopIntent.Reasoning == "" || !strings.Contains(res.TopIntent.Reasoning, "AvailableActions") {
		t.Errorf("expected capability hint in reasoning, got %q", res.TopIntent.Reasoning)
	}
}