package http

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

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

const validCreatePaketJSON = `{
	"nama":"PAKET MCU CPONE TES 2",
	"jenis_paket":"MCU",
	"rawat_inap":false,
	"rawat_jalan":true,
	"multi_visit":false,
	"tanggal_mulai":"2026-09-01",
	"tanggal_selesai":"2026-09-30",
	"kelas_id":"Default",
	"layanan":[{
		"layanan_id":"1200",
		"departemen_id":"MED-PNJ-LAB",
		"jumlah":1,
		"jumlah_hari":1,
		"harga":"130000.00",
		"tipe_diskon":"Percentage",
		"diskon":"0.00",
		"tipe_share":"Absolute",
		"share_rs":"65000.00",
		"share_dokter":"0.00",
		"share_external":"65000.00",
		"share_lain":"0.00"
	}]
}`

func TestCreatePaketResponseAndDecimalParsing(t *testing.T) {
	repo := &fakePaketRepository{create: repository.CreatePaketResult{
		PaketID: "DISP-260900022", Nama: "PAKET MCU CPONE TES 2",
		TotalHarga: "130000.00", TotalDiskon: "0.00", JumlahLayanan: 1,
	}}
	handler := Handler{paketRepo: repo}
	request := httptest.NewRequest(http.MethodPost, "/api/cpone/paket", strings.NewReader(validCreatePaketJSON))
	recorder := httptest.NewRecorder()

	handler.CreatePaket(recorder, request)

	if recorder.Code != http.StatusCreated {
		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
	}
	if len(repo.createParams.Layanan) != 1 || repo.createParams.Layanan[0].HargaCents != 13000000 || repo.createParams.Layanan[0].ShareExternalCents != 6500000 {
		t.Fatalf("unexpected parsed params: %+v", repo.createParams)
	}
	const expected = `{"success":true,"status":"created","message":"Paket berhasil dibuat","data":{"paket_id":"DISP-260900022","nama":"PAKET MCU CPONE TES 2","total_harga":"130000.00","total_diskon":"0.00","jumlah_layanan":1}}` + "\n"
	if recorder.Body.String() != expected {
		t.Fatalf("body mismatch\n got: %s\nwant: %s", recorder.Body.String(), expected)
	}
}

func TestCreatePaketValidation(t *testing.T) {
	tests := []struct {
		name    string
		mutate  func(map[string]any)
		message string
		valid   bool
	}{
		{
			name: "requires care type",
			mutate: func(payload map[string]any) {
				payload["rawat_jalan"] = false
			},
			message: "Rawat inap atau rawat jalan minimal salah satu harus aktif",
		},
		{
			name: "rejects percentage discount above 100",
			mutate: func(payload map[string]any) {
				service := payload["layanan"].([]any)[0].(map[string]any)
				service["diskon"] = "100.01"
			},
			message: "The layanan.0 diskon percentage tidak boleh lebih dari 100.",
		},
		{
			name: "rejects absolute share mismatch",
			mutate: func(payload map[string]any) {
				service := payload["layanan"].([]any)[0].(map[string]any)
				service["share_external"] = "64000.00"
			},
			message: "The layanan.0 total share absolute harus sama dengan harga.",
		},
		{
			name: "allows one cent absolute share rounding difference",
			mutate: func(payload map[string]any) {
				service := payload["layanan"].([]any)[0].(map[string]any)
				service["share_external"] = "64999.99"
			},
			message: "",
			valid:   true,
		},
		{
			name: "rejects duplicate service",
			mutate: func(payload map[string]any) {
				services := payload["layanan"].([]any)
				services = append(services, services[0])
				payload["layanan"] = services
			},
			message: "The layanan.1 layanan_id tidak boleh duplikat dalam satu paket.",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			var payload map[string]any
			request := httptest.NewRequest(http.MethodPost, "/api/cpone/paket", strings.NewReader(validCreatePaketJSON))
			payload, _ = decodeJSONObject(request)
			test.mutate(payload)
			params, message := validateCreatePaket(payload)
			if test.valid {
				if params.Nama == "" || message != "" {
					t.Fatalf("params=%+v message=%q want valid payload", params, message)
				}
				return
			}
			if params.Nama != "" || message != test.message {
				t.Fatalf("params=%+v message=%q want=%q", params, message, test.message)
			}
		})
	}
}