package store

import (
	"context"
	"testing"
	"time"

	"github.com/alicebob/miniredis/v2"
	"github.com/redis/go-redis/v9"
)

func rdb(t *testing.T) *redis.Client {
	t.Helper()
	mr := miniredis.RunT(t)
	return redis.NewClient(&redis.Options{Addr: mr.Addr()})
}

func TestAllowSessionWindow(t *testing.T) {
	r := rdb(t)
	ctx := context.Background()
	now := time.Now()
	// 30 次放行，第 31 次拒绝
	for i := 0; i < 30; i++ {
		ok, err := AllowSession(ctx, r, "dev1", now)
		if err != nil || !ok {
			t.Fatalf("session %d should pass: ok=%v err=%v", i+1, ok, err)
		}
	}
	if ok, _ := AllowSession(ctx, r, "dev1", now); ok {
		t.Fatal("31st session should be rejected")
	}
	// 其他设备不受影响
	if ok, _ := AllowSession(ctx, r, "dev2", now); !ok {
		t.Fatal("other device should pass")
	}
}

func TestAllowAudioSecondsWindow(t *testing.T) {
	r := rdb(t)
	ctx := context.Background()
	now := time.Now()
	// 1700s 放行
	if ok, _ := AllowAudioSeconds(ctx, r, "dev1", 1700, now); !ok {
		t.Fatal("1700s should pass")
	}
	// 再 100s（累计 1800）放行
	if ok, _ := AllowAudioSeconds(ctx, r, "dev1", 100, now.Add(time.Second)); !ok {
		t.Fatal("cumulative 1800s should pass")
	}
	// 再 1s 超限拒绝
	if ok, _ := AllowAudioSeconds(ctx, r, "dev1", 1, now.Add(2*time.Second)); ok {
		t.Fatal("1801s should be rejected")
	}
}

func TestDeviceSlot(t *testing.T) {
	r := rdb(t)
	ctx := context.Background()
	ok, err := AcquireDeviceSlot(ctx, r, "dev1", "s1")
	if err != nil || !ok {
		t.Fatalf("first acquire should pass: %v", err)
	}
	if ok, _ := AcquireDeviceSlot(ctx, r, "dev1", "s2"); ok {
		t.Fatal("second concurrent acquire should fail")
	}
	// 非持有者释放无效
	if err := ReleaseDeviceSlot(ctx, r, "dev1", "s2"); err != nil {
		t.Fatal(err)
	}
	if ok, _ := AcquireDeviceSlot(ctx, r, "dev1", "s3"); ok {
		t.Fatal("slot should still be held by s1")
	}
	// 持有者释放后可再获取
	if err := ReleaseDeviceSlot(ctx, r, "dev1", "s1"); err != nil {
		t.Fatal(err)
	}
	if ok, _ := AcquireDeviceSlot(ctx, r, "dev1", "s3"); !ok {
		t.Fatal("acquire after release should pass")
	}
}