package chat

import (
	"context"
	"fmt"
	"strings"
	"testing"

	"chat-agent-system/internal/bizdev"
	"chat-agent-system/internal/config"
	"chat-agent-system/internal/coordinator"
	"chat-agent-system/internal/docgov"
)

func TestExecuteAction_DocGovReviewApprove(t *testing.T) {
	cfg := &config.Config{DataDir: t.TempDir()}
	svc := bizdev.MustNewService(t, cfg)
	docGov := bizdev.Snapshot(svc).Gov
	ctx := context.Background()

	docID := "doc_proj1_research"
	_, err := docGov.CreateOrGetDocument(
		ctx, docID, 1, "research", "调研报告", "V0.5", "",
		1, "张工", 2, "李主管", 3, "王总监",
	)
	if err != nil {
		t.Fatalf("CreateOrGetDocument: %v", err)
	}
	_ = docGov.MarkDocumentContentUpdated(ctx, docID, "hash1", false)
	_, _ = docGov.SubmitForReview(ctx, docID, 1, docgov.RoleAuthor, "张工")

	sess := &Session{
		UserID:  2,
		Actions: &ActionServices{DocGov: docGov},
	}
	action := &coordinator.PendingAction{
		Kind:    "docgov.review_approve",
		DocID:   docID,
		Comment: "同意",
	}
	userCtx := &coordinator.UserProjectContext{
		User: coordinator.UserInfo{ID: "2", Name: "李主管"},
	}

	result, err := sess.executeAction(ctx, action, userCtx)
	if err != nil {
		t.Fatalf("executeAction failed: %v", err)
	}
	if result.DocState != string(docgov.StateApproving) {
		t.Fatalf("expected approving state, got %s", result.DocState)
	}
	reply := renderActionReply(action, result, nil)
	if reply == "" {
		t.Fatal("expected non-empty reply")
	}
}

func TestExecuteAction_SubmitReviewAndComment(t *testing.T) {
	cfg := &config.Config{DataDir: t.TempDir()}
	svc := bizdev.MustNewService(t, cfg)
	docGov := bizdev.Snapshot(svc).Gov
	ctx := context.Background()

	docID := "doc_proj1_intake"
	_, err := docGov.CreateOrGetDocument(
		ctx, docID, 1, "intake", "需求收集表", "V0.1", "",
		1, "张工", 2, "李主管", 3, "王总监",
	)
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	_ = docGov.MarkDocumentContentUpdated(ctx, docID, "hash1", false)

	sess := &Session{UserID: 1, ProjectID: 1, Actions: &ActionServices{DocGov: docGov}}
	userCtx := &coordinator.UserProjectContext{User: coordinator.UserInfo{ID: "1", Name: "张工"}}

	res, err := sess.executeAction(ctx, &coordinator.PendingAction{Kind: "docgov.submit_review", DocID: docID}, userCtx)
	if err != nil {
		t.Fatalf("submit: %v", err)
	}
	if res.DocState != string(docgov.StateReviewing) {
		t.Fatalf("state=%s", res.DocState)
	}

	_, err = sess.executeAction(ctx, &coordinator.PendingAction{
		Kind: "docgov.comment_add", DocID: docID, Role: "reviewer", Section: "s1",
		Comment: "请补充风险", Reason: "suggestion",
	}, &coordinator.UserProjectContext{User: coordinator.UserInfo{ID: "2", Name: "李主管"}})
	if err != nil {
		// author can also comment in reviewing; use reviewer id
		t.Fatalf("comment add: %v", err)
	}

	sess.UserID = 2
	_, err = sess.executeAction(ctx, &coordinator.PendingAction{
		Kind: "docgov.comment_resolve", DocID: docID, Role: "reviewer", Section: "s1",
	}, &coordinator.UserProjectContext{User: coordinator.UserInfo{ID: "2", Name: "李主管"}})
	if err != nil {
		t.Fatalf("comment resolve: %v", err)
	}
}

type stubReopen struct {
	reqErr error
	aprErr error
}

func (s *stubReopen) ListPendingReopens(context.Context, int64) ([]ReopenRequestView, error) {
	return nil, nil
}
func (s *stubReopen) RequestReopenByDoc(context.Context, int64, string, string, int64) (ReopenRequestView, error) {
	if s.reqErr != nil {
		return ReopenRequestView{}, s.reqErr
	}
	return ReopenRequestView{ID: 9, Status: "pending"}, nil
}
func (s *stubReopen) ApproveReopenByID(context.Context, int64, int64, int64) (ReopenRequestView, error) {
	if s.aprErr != nil {
		return ReopenRequestView{}, s.aprErr
	}
	return ReopenRequestView{ID: 9, Status: "approved"}, nil
}

func TestExecuteAction_ReopenPaths(t *testing.T) {
	sess := &Session{
		UserID: 1, ProjectID: 1,
		Actions: &ActionServices{Reopens: &stubReopen{}},
	}
	userCtx := &coordinator.UserProjectContext{User: coordinator.UserInfo{ID: "1", Name: "A"}}
	res, err := sess.executeAction(context.Background(), &coordinator.PendingAction{
		Kind: "docgov.reopen_request", TaskKey: "intake", Reason: "需补充",
	}, userCtx)
	if err != nil {
		t.Fatal(err)
	}
	if res.Message == "" {
		t.Fatal("expected message")
	}
	res, err = sess.executeAction(context.Background(), &coordinator.PendingAction{
		Kind: "docgov.reopen_approve", RequestID: 9,
	}, userCtx)
	if err != nil {
		t.Fatal(err)
	}
	if res.Message == "" {
		t.Fatal("expected approve message")
	}

	sess.Actions.Reopens = &stubReopen{reqErr: fmt.Errorf("无权申请重开")}
	_, err = sess.executeAction(context.Background(), &coordinator.PendingAction{
		Kind: "docgov.reopen_request", TaskKey: "intake", Reason: "x",
	}, userCtx)
	if err == nil {
		t.Fatal("expected permission failure")
	}
	reply := renderActionReply(&coordinator.PendingAction{Kind: "docgov.reopen_request", DocID: "d"}, nil, err)
	if reply == "" || !strings.Contains(reply, "无权") {
		t.Fatalf("reply=%s", reply)
	}
}