package http

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

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

type fakeLayananRepository struct {
	page   repository.LayananPage
	err    error
	params repository.LayananListParams
}

func (f *fakeLayananRepository) ListLayanan(_ context.Context, params repository.LayananListParams) (repository.LayananPage, error) {
	f.params = params
	return f.page, f.err
}

func (f *fakeLayananRepository) MappingHarga(context.Context, repository.MappingHargaParams) ([]repository.TarifLayanan, error) {
	return nil, nil
}

func TestListLayananResponseParity(t *testing.T) {
	group, department := "MCU", "MEDICAL CHECK UP"
	layananID, code, name := "6413", "DL", "DARAH LENGKAP"
	repo := &fakeLayananRepository{page: repository.LayananPage{
		Total: 16,
		Items: []repository.LayananDepartemen{{
			GroupLayananID: &group, Departemen: &department, LayananDepartemenID: 987,
			LayananID: &layananID, LayananCode: &code, NamaLayanan: &name,
		}},
	}}
	handler := Handler{layananRepo: repo}
	request := httptest.NewRequest(http.MethodGet, "http://localhost/api/cpone/layanan?page=1&search=tes&departemen_id=MCU&kode_rs=AWALBROS_DEV", nil)
	recorder := httptest.NewRecorder()
	handler.ListLayanan(recorder, request)

	if recorder.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
	}
	if repo.params.Page != 1 || repo.params.PerPage != defaultLayananPerPage || repo.params.Search != "tes" || repo.params.DepartemenID != "MCU" {
		t.Fatalf("params = %+v", repo.params)
	}
	for _, expected := range []string{
		`"GroupLayananID":"MCU"`, `"Departemen":"MEDICAL CHECK UP"`,
		`"LayananDepartemenID":987`, `"LayananID":"6413"`,
		`"NamaLayanan":"DARAH LENGKAP"`, `"LayananCode":"DL"`,
		`"last_page":2`, `"per_page":15`,
		`"next_page_url":"http://localhost/api/cpone/layanan?kode_rs=AWALBROS_DEV\u0026page=2"`,
	} {
		if !strings.Contains(recorder.Body.String(), expected) {
			t.Fatalf("response missing %s: %s", expected, recorder.Body.String())
		}
	}
}

func TestListLayananUsesLaravelPageFallback(t *testing.T) {
	repo := &fakeLayananRepository{page: repository.LayananPage{Items: []repository.LayananDepartemen{}}}
	handler := Handler{layananRepo: repo}
	for _, target := range []string{"/api/cpone/layanan", "/api/cpone/layanan?page=0", "/api/cpone/layanan?page=invalid"} {
		recorder := httptest.NewRecorder()
		handler.ListLayanan(recorder, httptest.NewRequest(http.MethodGet, target, nil))
		if recorder.Code != http.StatusOK || repo.params.Page != 1 || repo.params.PerPage != defaultLayananPerPage {
			t.Fatalf("target=%s status=%d params=%+v", target, recorder.Code, repo.params)
		}
	}
}

func TestListLayananAcceptsBoundedPerPage(t *testing.T) {
	repo := &fakeLayananRepository{page: repository.LayananPage{Items: []repository.LayananDepartemen{}}}
	handler := Handler{layananRepo: repo}
	for target, expected := range map[string]int{
		"/api/cpone/layanan?per_page=250":  250,
		"/api/cpone/layanan?per_page=5000": maxLayananPerPage,
	} {
		recorder := httptest.NewRecorder()
		handler.ListLayanan(recorder, httptest.NewRequest(http.MethodGet, target, nil))
		if recorder.Code != http.StatusOK || repo.params.PerPage != expected {
			t.Fatalf("target=%s status=%d per_page=%d", target, recorder.Code, repo.params.PerPage)
		}
	}
}

func TestListLayananInternalError(t *testing.T) {
	handler := Handler{layananRepo: &fakeLayananRepository{err: errors.New("query failed")}}
	recorder := httptest.NewRecorder()
	handler.ListLayanan(recorder, httptest.NewRequest(http.MethodGet, "/api/cpone/layanan", nil))
	if recorder.Code != http.StatusInternalServerError {
		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
	}
}