package controllers

import (
	"os"
	"testing"

	"doormile/constants"
	"doormile/models"
)

func intPtr(v int) *int { return &v }

func TestNextActionForConsignment(t *testing.T) {
	cases := []struct {
		name   string
		status string
		want   string
	}{
		{
			// The whole point of request 27: a hub-routed parcel sits on Created
			// while it is being carried to a base, and the app must be able to
			// rebuild that leg from server state after a restart.
			name:   "collected and routed to a base means carry it there",
			status: constants.ConsignmentCreated,
			want:   constants.NextActionInwardAtHub,
		},
		{
			name:   "collected hyperlocal parcel waits for start-delivery",
			status: constants.ConsignmentCollectedByMiler,
			want:   constants.NextActionStartDelivery,
		},
		{
			name:   "out for delivery means deliver",
			status: constants.ConsignmentOutForDelivery,
			want:   constants.NextActionDeliver,
		},
		{
			name:   "already handed in at a base leaves the rider nothing to do",
			status: constants.ConsignmentInwardedAtHub,
			want:   constants.NextActionHandedToHub,
		},
		{
			name:   "delivered is past this rider's leg",
			status: constants.ConsignmentDelivered,
			want:   constants.NextActionNone,
		},
		{
			name:   "in transit between bases is not a rider action",
			status: constants.ConsignmentInTransit,
			want:   constants.NextActionNone,
		},
	}

	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			if got := nextActionForConsignment(tc.status); got != tc.want {
				t.Errorf("nextActionForConsignment(%q) = %q, want %q", tc.status, got, tc.want)
			}
		})
	}
}

func TestDerivePickupSourceType(t *testing.T) {
	cases := []struct {
		name    string
		booking models.PickupBooking
		want    string
	}{
		{
			name:    "a stored type always wins",
			booking: models.PickupBooking{Pickupsourcetype: constants.PickupSourceStore, Tenantlocationid: intPtr(7)},
			want:    constants.PickupSourceStore,
		},
		{
			name:    "a booking naming a base is a base pickup",
			booking: models.PickupBooking{Pickuphubid: intPtr(1)},
			want:    constants.PickupSourceHub,
		},
		{
			name:    "a booking naming a client site is a merchant pickup",
			booking: models.PickupBooking{Tenantlocationid: intPtr(7)},
			want:    constants.PickupSourceMerchant,
		},
		{
			// The case the whole column exists for: a front-door pickup has no
			// location id, and "customer" must be a value rather than a blank.
			name:    "a booking naming no location at all is a customer door",
			booking: models.PickupBooking{Pickupaddress: "12 Race Course Road"},
			want:    constants.PickupSourceCustomer,
		},
	}

	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			if got := derivePickupSourceType(&tc.booking); got != tc.want {
				t.Errorf("derivePickupSourceType() = %q, want %q", got, tc.want)
			}
		})
	}
}

func TestRenderBaseCarriesAllSixFields(t *testing.T) {
	// Five of six leaves a rider unable to get there: the id keys the handover,
	// the name is the heading, address and pincode are read at the gate, and the
	// coordinates are the only thing that can drive Navigate.
	hub := models.Hub{
		Hubid:     1,
		Hubname:   "Coimbatore Hub",
		Address:   "14 Avinashi Road, Peelamedu, Coimbatore",
		Pincode:   "641004",
		Latitude:  11.0272,
		Longitude: 76.9905,
	}

	got := renderBase(&hub)
	for _, field := range []string{"id", "name", "address", "pincode", "latitude", "longitude"} {
		if _, ok := got[field]; !ok {
			t.Errorf("renderBase() is missing %q", field)
		}
	}
	if len(got) != 6 {
		t.Errorf("renderBase() returned %d fields, want exactly 6: %v", len(got), got)
	}

	if renderBase(nil) != nil {
		t.Error("renderBase(nil) should be nil, so an unresolved base is absent rather than empty")
	}
}

func TestHubHandoverEnabled(t *testing.T) {
	// Default OFF matters operationally: turning it on before a rider-app build
	// that can hand a parcel over would strand every intercity parcel on Created
	// with no button to advance it.
	t.Setenv("MILER_HUB_HANDOVER_ENABLED", "")
	os.Unsetenv("MILER_HUB_HANDOVER_ENABLED")
	if hubHandoverEnabled() {
		t.Error("hub handover must default to off when the env var is unset")
	}

	t.Setenv("MILER_HUB_HANDOVER_ENABLED", "TRUE")
	if !hubHandoverEnabled() {
		t.Error("hub handover should be on for TRUE, matching the case-insensitive read used elsewhere")
	}

	t.Setenv("MILER_HUB_HANDOVER_ENABLED", "1")
	if hubHandoverEnabled() {
		t.Error(`only "true" turns the flow on — "1" must not`)
	}
}