package config

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"
)

// TestLoad 验证 gateway-service 的本地 config.yaml 能被正常读取。
func TestLoad(t *testing.T) {
	cfg, err := Load("../../configs/config.yaml")
	if err != nil {
		t.Fatalf("Load failed: %v", err)
	}

	if cfg.HTTPAddr != ":13000" {
		t.Fatalf("unexpected http addr: %s", cfg.HTTPAddr)
	}

	if cfg.RoomServiceAddr != "127.0.0.1:13001" {
		t.Fatalf("unexpected room addr: %s", cfg.RoomServiceAddr)
	}
	if cfg.GRPCClient.DefaultTimeout != 5*time.Second || cfg.GRPCClient.RetryMaxAttempts != 2 || len(cfg.GRPCClient.RetryableStatusCodes) != 1 || cfg.GRPCClient.RetryableStatusCodes[0] != "UNAVAILABLE" {
		t.Fatalf("unexpected grpc client policy: %+v", cfg.GRPCClient)
	}
	if cfg.AppConfig.MySQLDSN == "" || !strings.Contains(cfg.AppConfig.MySQLDSN, "hyapp_admin") {
		t.Fatalf("gateway app config mysql dsn must point to admin config db: %+v", cfg.AppConfig)
	}
	if !cfg.AuthRateLimit.Enabled || cfg.AuthRateLimit.RedisAddr != "127.0.0.1:13379" {
		t.Fatalf("local auth rate redis config mismatch: %+v", cfg.AuthRateLimit)
	}
	if cfg.AuthRateLimit.KeyPrefix != "gateway:auth:rate:" {
		t.Fatalf("unexpected auth rate key prefix: %q", cfg.AuthRateLimit.KeyPrefix)
	}
	if !cfg.TencentRTC.Enabled || cfg.TencentRTC.SDKAppID == 0 || cfg.TencentRTC.SecretKey == "" {
		t.Fatalf("local tencent rtc config must be explicit: %+v", cfg.TencentRTC)
	}
	if cfg.TencentRTC.UserSigTTL != 2*time.Hour || cfg.TencentRTC.RoomIDType != "string" || cfg.TencentRTC.AppScene != "voice_chat_room" {
		t.Fatalf("unexpected local tencent rtc policy: %+v", cfg.TencentRTC)
	}
	if !cfg.TencentCOS.Enabled || cfg.TencentCOS.SecretID == "" || cfg.TencentCOS.SecretKey == "" || cfg.TencentCOS.BucketName == "" || cfg.TencentCOS.Region == "" || cfg.TencentCOS.AccessURL == "" {
		t.Fatalf("local tencent cos config must be explicit")
	}
	if cfg.TencentCOS.AccessURL != "https://media.haiyihy.com" {
		t.Fatalf("unexpected local tencent cos access url: %q", cfg.TencentCOS.AccessURL)
	}
}

// TestLoadTencentExample 验证腾讯云 IM 线上模板字段能被 gateway 正确解析。
func TestLoadTencentExample(t *testing.T) {
	cfg, err := Load("../../configs/config.tencent.example.yaml")
	if err != nil {
		t.Fatalf("Load tencent example failed: %v", err)
	}

	if cfg.TencentIM.SDKAppID == 0 {
		t.Fatalf("sdk_app_id template must be present")
	}
	if cfg.TencentIM.SecretKey == "" || cfg.TencentIM.CallbackAuthToken == "" {
		t.Fatalf("secret and callback token templates must be present")
	}
	if cfg.TencentIM.CallbackURL == "" {
		t.Fatalf("callback_url template must be present")
	}
	if cfg.AppConfig.MySQLDSN == "" || !strings.Contains(cfg.AppConfig.MySQLDSN, "hyapp_admin") {
		t.Fatalf("tencent app config mysql dsn template must be explicit: %+v", cfg.AppConfig)
	}
	if cfg.TencentIM.UserSigTTL != 24*time.Hour {
		t.Fatalf("unexpected usersig ttl: %s", cfg.TencentIM.UserSigTTL)
	}
	if !cfg.AuthRateLimit.Enabled || cfg.AuthRateLimit.RedisAddr == "" || cfg.AuthRateLimit.RedisPassword == "" {
		t.Fatalf("tencent auth rate redis template must be explicit: %+v", cfg.AuthRateLimit)
	}
	if !cfg.TencentRTC.Enabled || cfg.TencentRTC.SDKAppID == 0 || cfg.TencentRTC.SecretKey == "" {
		t.Fatalf("tencent rtc template must be explicit: %+v", cfg.TencentRTC)
	}
	if cfg.TencentRTC.UserSigTTL != 2*time.Hour || cfg.TencentRTC.RoomIDType != "string" || cfg.TencentRTC.AppScene != "voice_chat_room" {
		t.Fatalf("unexpected tencent rtc policy: %+v", cfg.TencentRTC)
	}
	if !cfg.TencentCOS.Enabled || cfg.TencentCOS.SecretID == "" || cfg.TencentCOS.SecretKey == "" || cfg.TencentCOS.BucketName == "" || cfg.TencentCOS.Region == "" || cfg.TencentCOS.AccessURL == "" {
		t.Fatalf("tencent cos template must be explicit")
	}
}

// TestLoadRejectsUnsupportedRTCRoomIDType protects the string strRoomId policy at startup.
func TestLoadRejectsUnsupportedRTCRoomIDType(t *testing.T) {
	path := filepath.Join(t.TempDir(), "config.yaml")
	if err := os.WriteFile(path, []byte(`tencent_rtc:
  enabled: true
  sdk_app_id: 1400000000
  secret_key: "secret"
  user_sig_ttl: "2h"
  room_id_type: "number"
  app_scene: "voice_chat_room"
`), 0o600); err != nil {
		t.Fatalf("write temp config failed: %v", err)
	}

	if _, err := Load(path); err == nil {
		t.Fatalf("Load should reject unsupported tencent_rtc.room_id_type")
	}
}

func TestLoadRejectsIncompleteTencentCOSConfigWhenEnabled(t *testing.T) {
	path := filepath.Join(t.TempDir(), "config.yaml")
	if err := os.WriteFile(path, []byte(`tencent-cos:
  enabled: true
  secret-id: "secret-id"
  secret-key: ""
  bucket-name: "bucket"
  region: "me-saudi-arabia"
  access-url: "https://media.example.com"
`), 0o600); err != nil {
		t.Fatalf("write temp config failed: %v", err)
	}

	if _, err := Load(path); err == nil {
		t.Fatalf("Load should reject incomplete enabled tencent-cos config")
	}
}