package service

import (
	"errors"
	"strings"
	"testing"

	"github.com/DATA-DOG/go-sqlmock"
)

// expectWarehouseSummary 让 WarehouseRepository.List 返回一组仓库/库位，用于驱动
// ResolveInventoryScope。传 nil 表示"该公司没有仓库"。
func expectWarehouseSummary(mock sqlmock.Sqlmock, organizationID int64, warehouseStatus, locationStatus *string) {
	rows := sqlmock.NewRows([]string{"id", "organization_id", "code", "name", "status", "location_id", "location_code", "location_name", "location_status"})
	if warehouseStatus != nil {
		var locationID interface{} = nil
		var locationCode, locationName, locStatus interface{} = nil, nil, nil
		if locationStatus != nil {
			locationID, locationCode, locationName, locStatus = 20, "L", "库位", *locationStatus
		}
		rows.AddRow(10, organizationID, "W", "仓库", *warehouseStatus, locationID, locationCode, locationName, locStatus)
	}
	mock.ExpectQuery("SELECT w.id, w.organization_id").WithArgs(organizationID).WillReturnRows(rows)
}

func strptr(s string) *string { return &s }

func TestResolveInventoryScopeUnavailableCases(t *testing.T) {
	cases := []struct {
		name            string
		warehouseStatus *string
		locationStatus  *string
		requireActive   bool
		wantSubstring   string
	}{
		{"no warehouse", nil, nil, true, "请先配置本公司仓库"},
		{"no location", strptr("active"), nil, true, "请先配置本公司仓库的库位"},
		{"disabled warehouse", strptr("inactive"), strptr("active"), true, "本公司仓库已停用"},
		{"disabled location", strptr("active"), strptr("inactive"), true, "本公司库位已停用"},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			mock := outboundMock(t)
			expectWarehouseSummary(mock, 1, tc.warehouseStatus, tc.locationStatus)
			_, err := ResolveInventoryScope(1, tc.requireActive)
			if !errors.Is(err, ErrInventoryScopeUnavailable) {
				t.Fatalf("got %v, want ErrInventoryScopeUnavailable", err)
			}
			if !strings.Contains(err.Error(), tc.wantSubstring) {
				t.Fatalf("message %q must contain %q", err.Error(), tc.wantSubstring)
			}
			if err := mock.ExpectationsWereMet(); err != nil {
				t.Fatal(err)
			}
		})
	}
}

func TestResolveInventoryScopeReturnsActiveDimensions(t *testing.T) {
	mock := outboundMock(t)
	expectWarehouseSummary(mock, 3, strptr("active"), strptr("active"))
	scope, err := ResolveInventoryScope(3, true)
	if err != nil {
		t.Fatalf("resolve scope: %v", err)
	}
	if scope.OrganizationID != 3 || scope.WarehouseID != 10 || scope.LocationID != 20 {
		t.Fatalf("scope=%+v, want 3/10/20", scope)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

// 只读场景（requireActive=false）：停用的仓库、库位仍返回其维度，方便核验历史余额。
func TestResolveInventoryScopeKeepsDisabledDimensionsForReads(t *testing.T) {
	mock := outboundMock(t)
	expectWarehouseSummary(mock, 1, strptr("inactive"), strptr("inactive"))
	scope, err := ResolveInventoryScope(1, false)
	if err != nil {
		t.Fatalf("resolve scope for reads: %v", err)
	}
	if scope.WarehouseID != 10 || scope.LocationID != 20 {
		t.Fatalf("scope=%+v, want disabled dimensions preserved", scope)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}