// Package service 定义业务逻辑层接口
package service

import (
	"carrotskin/internal/model"
	"carrotskin/pkg/storage"
	"context"
	"time"

	"go.uber.org/zap"
)

// UserService 用户服务接口
type UserService interface {
	// 用户认证
	Register(ctx context.Context, username, password, email, avatar string) (*model.User, string, error)
	Login(ctx context.Context, usernameOrEmail, password, ipAddress, userAgent string) (*model.User, string, error)

	// 用户查询
	GetByID(ctx context.Context, id int64) (*model.User, error)
	GetByEmail(ctx context.Context, email string) (*model.User, error)

	// 用户更新
	UpdateInfo(ctx context.Context, user *model.User) error
	UpdateAvatar(ctx context.Context, userID int64, avatarURL string) error
	ChangePassword(ctx context.Context, userID int64, oldPassword, newPassword string) error
	ResetPassword(ctx context.Context, email, newPassword string) error
	ChangeEmail(ctx context.Context, userID int64, newEmail string) error

	// URL验证
	ValidateAvatarURL(ctx context.Context, avatarURL string) error

	// 配置获取
	GetMaxProfilesPerUser() int
	GetMaxTexturesPerUser() int
}

// ProfileService 档案服务接口
type ProfileService interface {
	// 档案CRUD
	Create(ctx context.Context, userID int64, name string) (*model.Profile, error)
	GetByUUID(ctx context.Context, uuid string) (*model.Profile, error)
	GetByUserID(ctx context.Context, userID int64) ([]*model.Profile, error)
	Update(ctx context.Context, uuid string, userID int64, name *string, skinID, capeID *int64) (*model.Profile, error)
	Delete(ctx context.Context, uuid string, userID int64) error

	// 档案状态
	CheckLimit(ctx context.Context, userID int64, maxProfiles int) error

	// 批量查询
	GetByNames(ctx context.Context, names []string) ([]*model.Profile, error)
	GetByProfileName(ctx context.Context, name string) (*model.Profile, error)
}

// TextureService 材质服务接口
type TextureService interface {
	// 材质CRUD
	Create(ctx context.Context, uploaderID int64, name, description, textureType, url, hash string, size int, isPublic, isSlim bool) (*model.Texture, error)
	UploadTexture(ctx context.Context, uploaderID int64, name, description, textureType string, fileData []byte, fileName string, isPublic, isSlim bool) (*model.Texture, error) // 直接上传材质文件
	GetByID(ctx context.Context, id int64) (*model.Texture, error)
	GetByHash(ctx context.Context, hash string) (*model.Texture, error)
	GetByUserID(ctx context.Context, uploaderID int64, page, pageSize int) ([]*model.Texture, int64, error)
	Search(ctx context.Context, keyword string, textureType model.TextureType, publicOnly bool, page, pageSize int) ([]*model.Texture, int64, error)
	Update(ctx context.Context, textureID, uploaderID int64, name, description string, isPublic *bool) (*model.Texture, error)
	Delete(ctx context.Context, textureID, uploaderID int64) error

	// 收藏
	ToggleFavorite(ctx context.Context, userID, textureID int64) (bool, error)
	GetUserFavorites(ctx context.Context, userID int64, page, pageSize int) ([]*model.Texture, int64, error)

	// 限制检查
	CheckUploadLimit(ctx context.Context, uploaderID int64, maxTextures int) error
}

// TokenService 令牌服务接口
type TokenService interface {
	// 令牌管理
	Create(ctx context.Context, userID int64, uuid, clientToken string) (*model.Profile, []*model.Profile, string, string, error)
	Validate(ctx context.Context, accessToken, clientToken string) bool
	Refresh(ctx context.Context, accessToken, clientToken, selectedProfileID string) (string, string, error)
	Invalidate(ctx context.Context, accessToken string)
	InvalidateUserTokens(ctx context.Context, userID int64)

	// 令牌查询
	GetUUIDByAccessToken(ctx context.Context, accessToken string) (string, error)
	GetUserIDByAccessToken(ctx context.Context, accessToken string) (int64, error)
}

// VerificationService 验证码服务接口
type VerificationService interface {
	SendCode(ctx context.Context, email, codeType string) error
	VerifyCode(ctx context.Context, email, code, codeType string) error
}

// CaptchaService 滑动验证码服务接口
type CaptchaService interface {
	Generate(ctx context.Context) (masterImg, tileImg, captchaID string, y int, err error)
	Verify(ctx context.Context, dx int, captchaID string) (bool, error)
}

// UploadService 上传服务接口
type UploadService interface {
	GenerateAvatarUploadURL(ctx context.Context, userID int64, fileName string) (*storage.PresignedPostPolicyResult, error)
	GenerateTextureUploadURL(ctx context.Context, userID int64, fileName, textureType string) (*storage.PresignedPostPolicyResult, error)
}

// YggdrasilService Yggdrasil服务接口
type YggdrasilService interface {
	// 用户认证
	GetUserIDByEmail(ctx context.Context, email string) (int64, error)
	VerifyPassword(ctx context.Context, password string, userID int64) error

	// 会话管理
	JoinServer(ctx context.Context, serverID, accessToken, selectedProfile, ip string) error
	HasJoinedServer(ctx context.Context, serverID, username, ip string) error

	// 密码管理
	ResetYggdrasilPassword(ctx context.Context, userID int64) (string, error)

	// 序列化
	SerializeProfile(ctx context.Context, profile model.Profile) map[string]interface{}
	SerializeUser(ctx context.Context, user *model.User, uuid string) map[string]interface{}

	// 证书
	GeneratePlayerCertificate(ctx context.Context, uuid string) (map[string]interface{}, error)
	GetPublicKey(ctx context.Context) (string, error)
}

// SecurityService 安全服务接口
type SecurityService interface {
	// 登录安全
	CheckLoginLocked(ctx context.Context, identifier string) (bool, time.Duration, error)
	RecordLoginFailure(ctx context.Context, identifier string) (int, error)
	ClearLoginAttempts(ctx context.Context, identifier string) error
	GetRemainingLoginAttempts(ctx context.Context, identifier string) (int, error)

	// 验证码安全
	CheckVerifyLocked(ctx context.Context, email, codeType string) (bool, time.Duration, error)
	RecordVerifyFailure(ctx context.Context, email, codeType string) (int, error)
	ClearVerifyAttempts(ctx context.Context, email, codeType string) error
}

// TextureRenderService 纹理渲染服务接口
type TextureRenderService interface {
	// RenderTexture 渲染纹理为预览图
	RenderTexture(ctx context.Context, textureID int64, renderType RenderType, size int, format ImageFormat) (*RenderResult, error)
	// RenderTextureFromData 从原始数据渲染纹理
	RenderTextureFromData(ctx context.Context, textureData []byte, renderType RenderType, size int, format ImageFormat, isSlim bool) ([]byte, string, error)
	// GetRenderURL 获取渲染图的URL
	GetRenderURL(textureID int64, renderType RenderType, size int, format ImageFormat) string
	// DeleteRenderCache 删除渲染缓存
	DeleteRenderCache(ctx context.Context, textureID int64) error
	// RenderAvatar 渲染头像（支持2D/3D模式）
	RenderAvatar(ctx context.Context, textureID int64, size int, mode AvatarMode, format ImageFormat) (*RenderResult, error)
	// RenderCape 渲染披风
	RenderCape(ctx context.Context, textureID int64, size int, format ImageFormat) (*RenderResult, error)
	// RenderPreview 渲染预览图（类似Blessing Skin的preview功能）
	RenderPreview(ctx context.Context, textureID int64, size int, format ImageFormat) (*RenderResult, error)
}

// RenderType 渲染类型
type RenderType string

const (
	RenderTypeFront     RenderType = "front"     // 正面
	RenderTypeBack      RenderType = "back"      // 背面
	RenderTypeFull      RenderType = "full"      // 全身
	RenderTypeHead      RenderType = "head"      // 头像
	RenderTypeIsometric RenderType = "isometric" // 等距视图
)

// ImageFormat 输出格式
type ImageFormat string

const (
	ImageFormatPNG  ImageFormat = "png"
	ImageFormatWEBP ImageFormat = "webp"
)

// AvatarMode 头像模式
type AvatarMode string

const (
	AvatarMode2D AvatarMode = "2d" // 2D头像
	AvatarMode3D AvatarMode = "3d" // 3D头像
)

// TextureType 纹理类型
type TextureType string

const (
	TextureTypeSteve TextureType = "steve" // Steve皮肤
	TextureTypeAlex  TextureType = "alex"  // Alex皮肤
	TextureTypeCape  TextureType = "cape"  // 披风
)

// RenderResult 渲染结果（附带缓存/HTTP头信息）
type RenderResult struct {
	URL          string
	ContentType  string
	ETag         string
	LastModified time.Time
	Size         int64
}

// Services 服务集合
type Services struct {
	User         UserService
	Profile      ProfileService
	Texture      TextureService
	Token        TokenService
	Verification VerificationService
	Captcha      CaptchaService
	Upload       UploadService
	Yggdrasil    YggdrasilService
	Security     SecurityService
}

// ServiceDeps 服务依赖
type ServiceDeps struct {
	Logger  *zap.Logger
	Storage *storage.StorageClient
}