package http

import (
	"context"
	"errors"
	"net/http"
	"net/http/httptest"
	"testing"

	"primaya-api/cpone-middleware/internal/repository"
)

type fakeLabResultRepository struct {
	outcome   repository.LabResultOutcome
	err       error
	labNumber string
}

func (f *fakeLabResultRepository) GetLabResult(_ context.Context, labNumber string) (repository.LabResultOutcome, error) {
	f.labNumber = labNumber
	return f.outcome, f.err
}

func TestGetLabResultResponseParity(t *testing.T) {
	verifiedAt := "2026-08-19 10:00:00"
	name := "Hemoglobin"
	result := "14.2"
	reference := "13.0 - 17.0"
	unit := "g/dL"
	groupID := "HEMATOLOGI"
	groupName := "Hematologi"
	repo := &fakeLabResultRepository{outcome: repository.LabResultOutcome{
		HTTPStatus: http.StatusOK,
		Success:    true,
		Status:     "lab_result_found",
		Message:    "Hasil laboratorium ditemukan",
		Data: &repository.LabResultData{
			Lab: repository.LabResultHeader{
				LabNumber: "CPLAB2608190001", TrxDepartemenID: 6103991,
				Status: "authorized", VerifiedAt: &verifiedAt,
			},
			Groups: []repository.LabResultGroup{{
				GroupID: &groupID, GroupName: &groupName,
				Items: []repository.LabResultItem{{
					TrxLayananID: 123456, ServiceID: "HB", Name: &name, Result: &result,
					ReferenceValue: &reference, Unit: &unit, CriticalFlag: "",
				}},
			}},
		},
	}}
	handler := Handler{labResultRepo: repo}
	request := httptest.NewRequest(http.MethodGet, "/api/cpone/patients/lab-results/cplab2608190001", nil)
	request.SetPathValue("labNumber", "cplab2608190001")
	recorder := httptest.NewRecorder()

	handler.GetLabResult(recorder, request)

	if recorder.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
	}
	if repo.labNumber != "CPLAB2608190001" {
		t.Fatalf("lab number=%q", repo.labNumber)
	}
	const expected = `{"success":true,"status":"lab_result_found","message":"Hasil laboratorium ditemukan","data":{"lab":{"lab_number":"CPLAB2608190001","trx_departemen_id":6103991,"registration_id":null,"tanggal":null,"status":"authorized","verified_at":"2026-08-19 10:00:00","authorized_at":null,"catatan":null},"patient":{"medrec_id":null,"nama":null,"tanggal_lahir":null,"jenis_kelamin":null},"doctor":{"penanggung_jawab":null,"pengirim":null},"groups":[{"group_id":"HEMATOLOGI","group_name":"Hematologi","items":[{"trx_layanan_id":123456,"service_id":"HB","service_code":null,"name":"Hemoglobin","result":"14.2","reference_value":"13.0 - 17.0","unit":"g/dL","critical_flag":"","value_type":null,"note":null}]}]}}` + "\n"
	if recorder.Body.String() != expected {
		t.Fatalf("body mismatch\n got: %s\nwant: %s", recorder.Body.String(), expected)
	}
}

func TestGetLabResultValidationParity(t *testing.T) {
	tests := []struct {
		name, labNumber, message string
	}{
		{name: "invalid characters", labNumber: "CPLAB_260819", message: "Nomor laboratorium hanya boleh berisi huruf, angka, dan tanda hubung"},
		{name: "too long", labNumber: "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNO", message: "Nomor laboratorium maksimal 50 karakter"},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			handler := Handler{labResultRepo: &fakeLabResultRepository{}}
			request := httptest.NewRequest(http.MethodGet, "/api/cpone/patients/lab-results/"+test.labNumber, nil)
			request.SetPathValue("labNumber", test.labNumber)
			recorder := httptest.NewRecorder()
			handler.GetLabResult(recorder, request)
			if recorder.Code != http.StatusUnprocessableEntity {
				t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
			}
			expected := `{"success":false,"status":"validation_error","message":` + strconvQuote(test.message) + `,"data":null}` + "\n"
			if recorder.Body.String() != expected {
				t.Fatalf("body mismatch\n got: %s\nwant: %s", recorder.Body.String(), expected)
			}
		})
	}
}

func TestGetLabResultForwardsDomainAndDatabaseOutcomes(t *testing.T) {
	tests := []struct {
		name       string
		repo       *fakeLabResultRepository
		statusCode int
		expected   string
	}{
		{
			name:       "not found",
			repo:       &fakeLabResultRepository{outcome: repository.LabResultOutcome{HTTPStatus: 404, Status: "lab_result_not_found", Message: "Hasil laboratorium tidak ditemukan"}},
			statusCode: 404,
			expected:   `{"success":false,"status":"lab_result_not_found","message":"Hasil laboratorium tidak ditemukan","data":null}` + "\n",
		},
		{
			name: "database error", repo: &fakeLabResultRepository{err: errors.New("database unavailable")},
			statusCode: 500,
			expected:   `{"success":false,"status":"error","message":"database unavailable","data":null}` + "\n",
		},
	}
	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			handler := Handler{labResultRepo: test.repo}
			request := httptest.NewRequest(http.MethodGet, "/api/cpone/patients/lab-results/CPLAB2608190001", nil)
			request.SetPathValue("labNumber", "CPLAB2608190001")
			recorder := httptest.NewRecorder()
			handler.GetLabResult(recorder, request)
			if recorder.Code != test.statusCode || recorder.Body.String() != test.expected {
				t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
			}
		})
	}
}