package config

import "time"

// ==================== 分页与查询 ====================
const (
	DefaultPage     = 1
	DefaultPageSize = 20
	MaxPageSize     = 100
)

// ==================== Token 与会话 ====================
const (
	DefaultAccessTokenExpiry  = 24 * time.Hour
	DefaultRefreshTokenExpiry = 7 * 24 * time.Hour
	TokenHeader               = "Authorization"
	TokenPrefix               = "Bearer "
)

// ==================== 文件上传 ====================
const (
	MaxFileSize           = 10 * 1024 * 1024 // 10MB
	AllowedFileExtensions = ".pdf,.doc,.docx,.txt,.md,.jpg,.jpeg,.png,.gif,.xlsx,.xls"
	AllowedMimeTypes      = "application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document,text/plain,text/markdown,image/jpeg,image/png,image/gif,application/vnd.ms-excel,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
)

// ==================== AI 模型 ====================
const (
	DefaultEmbeddingDimensions = 1024
	DefaultEmbeddingModel      = "text-embedding-v3"
	DefaultLLMTemperature       = 0.7
	DefaultLLMTopP             = 0.95
	DefaultLLMMaxTokens        = 8192
)

// ==================== RateLimit ====================
const (
	DefaultRateLimitMax     = 100
	DefaultRateLimitWindow  = 1 * time.Minute
)

// ==================== Redis Key 前缀 ====================
const (
	RedisKeyPrefixRateLimit = "rl:"
	RedisKeyPrefixSession   = "session:"
	RedisKeyPrefixToken     = "token:"
	RedisKeyPrefixCache     = "cache:"
)

// ==================== Chat ====================
const (
	MaxConversationHistory = 50
	MaxMessageLength        = 4000
)