package redisstate_test

import (
	"context"
	"encoding/base64"
	"testing"
	"time"

	"galaxy/lobby/internal/adapters/redisstate"
	"galaxy/lobby/internal/domain/common"

	"github.com/alicebob/miniredis/v2"
	"github.com/redis/go-redis/v9"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func newGapActivationTestStore(t *testing.T) (*redisstate.GapActivationStore, *miniredis.Miniredis) {
	t.Helper()
	server := miniredis.RunT(t)
	client := redis.NewClient(&redis.Options{Addr: server.Addr()})
	t.Cleanup(func() { _ = client.Close() })

	store, err := redisstate.NewGapActivationStore(client)
	require.NoError(t, err)
	return store, server
}

func TestNewGapActivationStoreRejectsNilClient(t *testing.T) {
	t.Parallel()
	_, err := redisstate.NewGapActivationStore(nil)
	require.Error(t, err)
}

func TestMarkActivatedWritesRecord(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, server := newGapActivationTestStore(t)

	at := time.Date(2026, 4, 25, 10, 0, 0, 0, time.UTC)
	require.NoError(t, store.MarkActivated(ctx, common.GameID("game-a"), at))

	encoded := base64.RawURLEncoding.EncodeToString([]byte("game-a"))
	stored, err := server.Get("lobby:gap_activated_at:" + encoded)
	require.NoError(t, err)
	assert.Contains(t, stored, "1777111200000")
}

func TestMarkActivatedIsNoOpOnSecondCall(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, server := newGapActivationTestStore(t)

	first := time.Date(2026, 4, 25, 10, 0, 0, 0, time.UTC)
	second := first.Add(time.Hour)

	require.NoError(t, store.MarkActivated(ctx, common.GameID("game-a"), first))
	require.NoError(t, store.MarkActivated(ctx, common.GameID("game-a"), second))

	encoded := base64.RawURLEncoding.EncodeToString([]byte("game-a"))
	stored, err := server.Get("lobby:gap_activated_at:" + encoded)
	require.NoError(t, err)
	assert.Contains(t, stored, "1777111200000")
}

func TestMarkActivatedRejectsInvalidGameID(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, _ := newGapActivationTestStore(t)

	err := store.MarkActivated(ctx, common.GameID(""), time.Now().UTC())
	require.Error(t, err)
}

func TestMarkActivatedRejectsZeroTime(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, _ := newGapActivationTestStore(t)

	err := store.MarkActivated(ctx, common.GameID("game-a"), time.Time{})
	require.Error(t, err)
}

func TestGapActivationStoreGetReturnsRecordedTime(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, _ := newGapActivationTestStore(t)

	at := time.Date(2026, 4, 25, 10, 0, 0, 0, time.UTC)
	require.NoError(t, store.MarkActivated(ctx, common.GameID("game-a"), at))

	got, ok, err := store.Get(ctx, common.GameID("game-a"))
	require.NoError(t, err)
	require.True(t, ok)
	assert.True(t, got.Equal(at))
}

func TestGapActivationStoreGetReturnsFalseWhenMissing(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, _ := newGapActivationTestStore(t)

	got, ok, err := store.Get(ctx, common.GameID("game-missing"))
	require.NoError(t, err)
	assert.False(t, ok)
	assert.True(t, got.IsZero())
}

func TestGapActivationStoreGetRejectsInvalidGameID(t *testing.T) {
	t.Parallel()
	ctx := context.Background()
	store, _ := newGapActivationTestStore(t)

	_, _, err := store.Get(ctx, common.GameID(""))
	require.Error(t, err)
}