package booking

import (
	"errors"
	"log/slog"
	"testing"
	"time"

	"github.com/rjNemo/rentease/internal/config"
)

func TestParseFromAPI_CreatesItemsForBookingSync(t *testing.T) {
	store := newStubStore()
	parser := stubParser{
		booking: Booking{
			From:           time.Date(2025, time.January, 1, 0, 0, 0, 0, time.UTC),
			To:             time.Date(2025, time.January, 4, 0, 0, 0, 0, time.UTC),
			Name:           "Jane Doe",
			PhoneNumber:    "123456",
			Email:          "jane@example.com",
			Platform:       config.Platform("Booking"),
			CustomerNumber: 2,
			PlatformFees:   15.0,
			Items: []Item{{
				Item:          " T3 ",
				Quantity:      3,
				Price:         80.0,
				PaymentMethod: "Card",
			}},
		},
	}

	svc, err := NewService(slog.Default(), store, parser, noopPDF{})
	if err != nil {
		t.Fatalf("unexpected error creating service: %v", err)
	}

	booking, err := svc.ParseFromAPI("raw booking content")
	if err != nil {
		t.Fatalf("unexpected error parsing booking: %v", err)
	}

	if len(store.items) != 2 {
		t.Fatalf("expected 2 items to be created (booking item + taxes), got %d", len(store.items))
	}

	if store.items[0].Item != "T3" {
		t.Fatalf("expected base item to be trimmed to host item name, got %q", store.items[0].Item)
	}

	if store.items[1].Item != "Taxes" {
		t.Fatalf("expected taxes item to be created, got %q", store.items[1].Item)
	}

	if len(booking.Items) != 2 {
		t.Fatalf("expected booking to include created items, got %d", len(booking.Items))
	}
}

func TestParseFromAPI_DoesNotCreateTaxesForNonBookingPlatform(t *testing.T) {
	store := newStubStore()
	parser := stubParser{
		booking: Booking{
			From:           time.Date(2025, time.March, 1, 0, 0, 0, 0, time.UTC),
			To:             time.Date(2025, time.March, 3, 0, 0, 0, 0, time.UTC),
			Name:           "Alex Smith",
			PhoneNumber:    "987654",
			Email:          "alex@example.com",
			Platform:       config.Platform("AirBnb"),
			CustomerNumber: 2,
			Items: []Item{{
				Item:          "t2",
				Quantity:      2,
				Price:         59.0,
				PaymentMethod: "Card",
			}},
		},
	}

	svc, err := NewService(slog.Default(), store, parser, noopPDF{})
	if err != nil {
		t.Fatalf("unexpected error creating service: %v", err)
	}

	if _, err := svc.ParseFromAPI("raw booking content"); err != nil {
		t.Fatalf("unexpected error parsing booking: %v", err)
	}

	if len(store.items) != 1 {
		t.Fatalf("expected only base item without taxes for non-Booking platform, got %d items", len(store.items))
	}
	if store.items[0].Item != "T2" {
		t.Fatalf("expected base item to match host item name, got %q", store.items[0].Item)
	}
}

func TestParseFromAPI_CreatesFallbackItemWhenUnknown(t *testing.T) {
	store := newStubStore()
	parser := stubParser{
		booking: Booking{
			From:           time.Date(2025, time.February, 1, 0, 0, 0, 0, time.UTC),
			To:             time.Date(2025, time.February, 2, 0, 0, 0, 0, time.UTC),
			Name:           "Jane Doe",
			PhoneNumber:    "123456",
			Email:          "jane@example.com",
			Platform:       config.Platform("Booking"),
			CustomerNumber: 1,
			Items: []Item{{
				Item:          "New Suite",
				Quantity:      1,
				Price:         120.0,
				PaymentMethod: "Card",
			}},
		},
	}

	svc, err := NewService(slog.Default(), store, parser, noopPDF{})
	if err != nil {
		t.Fatalf("unexpected error creating service: %v", err)
	}

	if _, err := svc.ParseFromAPI("raw booking content"); err != nil {
		t.Fatalf("unexpected error parsing booking: %v", err)
	}

	if len(store.items) != 1 {
		t.Fatalf("expected fallback item to be created, got %d items", len(store.items))
	}

	if store.items[0].Item != "New Suite" {
		t.Fatalf("expected fallback item name to match parsed value, got %q", store.items[0].Item)
	}
}

func TestParseFromAPI_NormalizesVerboseItemNameToHostItem(t *testing.T) {
	store := newStubStore()
	parser := stubParser{
		booking: Booking{
			From:           time.Date(2025, time.April, 1, 0, 0, 0, 0, time.UTC),
			To:             time.Date(2025, time.April, 3, 0, 0, 0, 0, time.UTC),
			Name:           "Chris P Bacon",
			PhoneNumber:    "999999",
			Email:          "chris@example.com",
			Platform:       config.Platform("Booking"),
			CustomerNumber: 2,
			Items: []Item{{
				Item:          "One-Bedroom House (T2 - VillaFleurie au bourg du Gosier)",
				Quantity:      2,
				Price:         59.0,
				PaymentMethod: "Card",
			}},
		},
	}

	svc, err := NewService(slog.Default(), store, parser, noopPDF{})
	if err != nil {
		t.Fatalf("unexpected error creating service: %v", err)
	}

	if _, err := svc.ParseFromAPI("raw booking content"); err != nil {
		t.Fatalf("unexpected error parsing booking: %v", err)
	}

	if len(store.items) != 2 {
		t.Fatalf("expected base item plus taxes, got %d items", len(store.items))
	}

	if store.items[0].Item != "T2" {
		t.Fatalf("expected verbose item name to normalize to host item 'T2', got %q", store.items[0].Item)
	}
}

type stubParser struct {
	booking Booking
	err     error
}

func (p stubParser) Parse(rawContent string) (*Booking, error) {
	if p.err != nil {
		return nil, p.err
	}

	cp := p.booking
	return &cp, nil
}

type stubStore struct {
	bookings []*Booking
	items    []*Item
}

func newStubStore() *stubStore {
	return &stubStore{
		bookings: make([]*Booking, 0),
		items:    make([]*Item, 0),
	}
}

func (s *stubStore) All() []*Line {
	return nil
}

func (s *stubStore) Search(value string) []*Line {
	return nil
}

func (s *stubStore) List(from, to time.Time) ([]*Line, error) {
	return nil, nil
}

func (s *stubStore) CardTotal(from, to time.Time) (float64, error) {
	return 0, nil
}

func (s *stubStore) Get(id int) (*Booking, error) {
	return nil, errors.New("not implemented")
}

func (s *stubStore) Create(b *Booking) error {
	b.ID = len(s.bookings) + 1
	s.bookings = append(s.bookings, b)
	return nil
}

func (s *stubStore) Update(b *Booking) error {
	return nil
}

func (s *stubStore) Cancel(id int) error {
	return nil
}

func (s *stubStore) CreateItem(i *Item) error {
	i.ID = len(s.items) + 1
	s.items = append(s.items, i)
	return nil
}

func (s *stubStore) PayItem(id int) (*Item, error) {
	return nil, nil
}

func (s *stubStore) GetItem(id int) (*Item, error) {
	return nil, nil
}

func (s *stubStore) UpdateItem(id int, item string, paymentMethod string, paymentStatus string, qty int, price float64) (*Item, error) {
	return nil, nil
}

type noopPDF struct{}

func (noopPDF) BuildInvoice(invoice Invoice) (string, error) {
	return "", nil
}

func (noopPDF) BuildReport(report ReportData, period string, month, year int) (string, error) {
	return "", nil
}