package parsers

import (
	"regexp"
	"time"
)

/*
constants.go - 解析器系统常量定义

统一管理common/parsers包中的所有常量，便于查看和编辑。
*/

// =============================================================================
// 默认解析器选项常量 (从Types.go迁移)
// =============================================================================

const (
	// 解析器默认配置
	DefaultEnableConcurrency = true
	DefaultMaxWorkers        = 4
	DefaultTimeout           = 30 * time.Second
	DefaultEnableValidation  = true
	DefaultEnableStatistics  = true
	DefaultIgnoreErrors      = false
	DefaultFileMaxSize       = 100 * 1024 * 1024 // 100MB
	DefaultMaxTargets        = 10000             // 10K targets
)

// =============================================================================
// 文件读取器常量 (从FileReader.go迁移)
// =============================================================================

const (
	// 文件读取器默认配置
	DefaultMaxCacheSize     = 10
	DefaultEnableCache      = true
	DefaultFileReaderMaxFileSize    = 50 * 1024 * 1024 // 50MB
	DefaultFileReaderTimeout        = 30 * time.Second
	DefaultFileReaderEnableValidation = true
	DefaultTrimSpace        = true
	DefaultSkipEmpty        = true
	DefaultSkipComments     = true
	
	// 文件内容验证
	MaxLineLength          = 1000 // 单行最大字符数
	MaxValidRune           = 32   // 最小有效字符ASCII值
	TabRune                = 9    // Tab字符
	NewlineRune            = 10   // 换行符
	CarriageReturnRune     = 13   // 回车符
	CommentPrefix          = "#"  // 注释前缀
)

// =============================================================================
// 凭据解析器常量 (从CredentialParser.go迁移)
// =============================================================================

const (
	// 凭据验证限制
	DefaultMaxUsernameLength    = 64
	DefaultMaxPasswordLength    = 128
	DefaultAllowEmptyPasswords  = true
	DefaultValidateHashes       = true
	DefaultDeduplicateUsers     = true
	DefaultDeduplicatePasswords = true
	DefaultCredentialsEnableStatistics = true
	
	// 哈希验证
	HashRegexPattern       = `^[a-fA-F0-9]{32}$` // MD5哈希正则表达式
	HashValidationLength   = 32                  // 有效哈希长度
	InvalidUsernameChars   = "\r\n\t"            // 无效用户名字符
)

// =============================================================================
// 网络解析器常量 (从NetworkParser.go迁移)
// =============================================================================

const (
	// 网络配置默认值
	DefaultValidateProxies   = true
	DefaultAllowInsecure     = false
	DefaultNetworkTimeout    = 30 * time.Second
	DefaultWebTimeout        = 10 * time.Second
	DefaultUserAgent         = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36"
	
	// 超时限制
	MaxTimeoutSeconds        = 300 // 最大超时5分钟
	MaxWebTimeoutSeconds     = 120 // 最大Web超时2分钟
	
	// 字符串长度限制
	MaxUserAgentLength       = 512  // 最大用户代理长度
	MaxCookieLength          = 4096 // 最大Cookie长度
	
	// 代理快捷配置
	ProxyShortcut1           = "1"
	ProxyShortcut2           = "2"
	ProxyShortcutHTTP        = "http://127.0.0.1:8080"
	ProxyShortcutSOCKS5      = "socks5://127.0.0.1:1080"
	
	// 协议支持
	ProtocolHTTP             = "http"
	ProtocolHTTPS            = "https"
	ProtocolSOCKS5           = "socks5"
	ProtocolPrefix           = "://"
	SOCKS5Prefix             = "socks5://"
	HTTPPrefix               = "http://"
	
	// 端口范围
	MinPort                  = 1
	MaxPort                  = 65535
	
	// 无效字符集
	InvalidUserAgentChars    = "\r\n\t"
)

// GetCommonBrowsers 获取常见浏览器标识列表
func GetCommonBrowsers() []string {
	return []string{
		"Mozilla", "Chrome", "Safari", "Firefox", "Edge", "Opera",
		"AppleWebKit", "Gecko", "Trident", "Presto",
	}
}

// =============================================================================
// 目标解析器常量 (从TargetParser.go迁移)
// =============================================================================

const (
	// 目标解析器默认配置
	DefaultTargetMaxTargets       = 10000
	DefaultMaxPortRange           = 1000
	DefaultAllowPrivateIPs        = true
	DefaultAllowLoopback          = true
	DefaultValidateURLs           = true
	DefaultResolveDomains         = false
	DefaultTargetEnableStatistics = true
	
	// 正则表达式模式
	IPv4RegexPattern              = `^(\d{1,3}\.){3}\d{1,3}$`
	PortRangeRegexPattern         = `^(\d+)(-(\d+))?$`
	URLValidationRegexPattern     = `^https?://[^\s]+$`
	DomainRegexPattern            = `^[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?)*$`
	CookieRegexPattern            = `^[^=;\s]+(=[^;\s]*)?(\s*;\s*[^=;\s]+(=[^;\s]*)?)*$`
	
	// IP地址限制
	MaxIPv4OctetValue             = 255
	IPv4OctetCount                = 4
	MaxDomainLength               = 253
	
	// CIDR网段简写
	PrivateNetwork192             = "192"
	PrivateNetwork172             = "172"
	PrivateNetwork10              = "10"
	PrivateNetwork192CIDR         = "192.168.0.0/16"
	PrivateNetwork172CIDR         = "172.16.0.0/12"
	PrivateNetwork10CIDR          = "10.0.0.0/8"
	
	// 私有网络范围
	Private172StartSecondOctet    = 16
	Private172EndSecondOctet      = 31
	Private192SecondOctet         = 168
	
	// /8网段采样配置
	Subnet8SamplingStep           = 32
	Subnet8ThirdOctetStep         = 10
	
	// IP地址计算位移
	IPFirstOctetShift             = 24
	IPSecondOctetShift            = 16  
	IPThirdOctetShift             = 8
	IPOctetMask                   = 0xFF
)

// GetCommonSecondOctets 获取常用第二段IP
func GetCommonSecondOctets() []int {
	return []int{0, 1, 2, 10, 100, 200, 254}
}

// =============================================================================
// 简化解析器常量 (从Simple.go迁移)
// =============================================================================

const (
	// 端口和主机限制
	SimpleMaxHosts               = 10000
	
	// 网段简写展开
	DefaultGatewayLastOctet      = 1
	RouterSwitchLastOctet        = 254
	SamplingMinHost              = 2
	SamplingMaxHost              = 253
)

// GetPortGroups 获取预定义端口组映射
func GetPortGroups() map[string]string {
	return map[string]string{
		"web":     "80,81,82,83,84,85,86,87,88,89,90,91,92,98,99,443,800,801,808,880,888,889,1000,1010,1080,1081,1082,1099,1118,1888,2008,2020,2100,2375,2379,3000,3008,3128,3505,5555,6080,6648,6868,7000,7001,7002,7003,7004,7005,7007,7008,7070,7071,7074,7078,7080,7088,7200,7680,7687,7688,7777,7890,8000,8001,8002,8003,8004,8005,8006,8008,8009,8010,8011,8012,8016,8018,8020,8028,8030,8038,8042,8044,8046,8048,8053,8060,8069,8070,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089,8090,8091,8092,8093,8094,8095,8096,8097,8098,8099,8100,8101,8108,8118,8161,8172,8180,8181,8200,8222,8244,8258,8280,8288,8300,8360,8443,8448,8484,8800,8834,8838,8848,8858,8868,8879,8880,8881,8888,8899,8983,8989,9000,9001,9002,9008,9010,9043,9060,9080,9081,9082,9083,9084,9085,9086,9087,9088,9089,9090,9091,9092,9093,9094,9095,9096,9097,9098,9099,9100,9200,9443,9448,9800,9981,9986,9988,9998,9999,10000,10001,10002,10004,10008,10010,10051,10250,12018,12443,14000,15672,15671,16080,18000,18001,18002,18004,18008,18080,18082,18088,18090,18098,19001,20000,20720,20880,21000,21501,21502,28018",
		"main":    "21,22,23,25,80,81,110,135,139,143,389,443,445,465,502,587,636,873,993,995,1433,1434,1521,1522,1525,2121,2200,2222,3000,3268,3269,3306,3389,5432,5672,5900,6379,7474,7687,8000,8080,8081,8088,8443,8888,9000,9042,9080,9092,9200,9300,11211,15672,22222,27017,61613,61614",
		"db":      "1433,1521,3306,5432,5672,6379,7687,9042,9093,9200,11211,27017,61616",
		"service": "21,22,23,25,110,135,139,143,162,389,445,465,502,587,636,873,993,995,1433,1521,2222,3306,3389,5020,5432,5672,5671,6379,8161,8443,9000,9092,9093,9200,10051,11211,15672,15671,27017,61616,61613",
		"common":  "21,22,23,25,53,80,110,135,139,143,443,445,993,995,1723,3389,5060,5985,5986",
		"all":     "1-65535",
	}
}

// GetTargetPortGroups 获取目标解析器端口组映射（向后兼容）
func GetTargetPortGroups() map[string]string {
	return GetPortGroups()
}

// =============================================================================
// 验证解析器常量 (从ValidationParser.go迁移)
// =============================================================================

const (
	// 验证解析器默认配置
	DefaultMaxErrorCount              = 100
	DefaultStrictMode                 = false
	DefaultAllowEmpty                 = true
	DefaultCheckConflicts             = true
	DefaultValidateTargets            = true
	DefaultValidateNetwork            = true
	
	// 性能警告阈值
	MaxTargetsThreshold               = 100000        // 最大目标数量阈值
	MinTimeoutThreshold               = 1 * time.Second  // 最小超时阈值
	MaxTimeoutThreshold               = 60 * time.Second // 最大超时阈值
)

// =============================================================================
// 错误类型常量
// =============================================================================

const (
	// 解析错误类型
	ErrorTypeInputError          = "INPUT_ERROR"
	ErrorTypeFileError           = "FILE_ERROR"
	ErrorTypeTimeout             = "TIMEOUT"
	ErrorTypeReadError           = "READ_ERROR"
	ErrorTypeUsernameError       = "USERNAME_ERROR"
	ErrorTypePasswordError       = "PASSWORD_ERROR"
	ErrorTypeHashError           = "HASH_ERROR"
	ErrorTypeProxyError          = "PROXY_ERROR"
	ErrorTypeUserAgentError      = "USERAGENT_ERROR"
	ErrorTypeCookieError         = "COOKIE_ERROR"
	ErrorTypeHostError           = "HOST_ERROR"
	ErrorTypePortError           = "PORT_ERROR"
	ErrorTypeExcludePortError    = "EXCLUDE_PORT_ERROR"
	
)

// =============================================================================
// 编译时正则表达式 
// =============================================================================

var (
	// 预编译的正则表达式，提高性能
	CompiledHashRegex    *regexp.Regexp
	CompiledIPv4Regex    *regexp.Regexp
	CompiledPortRegex    *regexp.Regexp
	CompiledURLRegex     *regexp.Regexp
	CompiledDomainRegex  *regexp.Regexp
	CompiledCookieRegex  *regexp.Regexp
)

// 在包初始化时编译正则表达式
func init() {
	CompiledHashRegex = regexp.MustCompile(HashRegexPattern)
	CompiledIPv4Regex = regexp.MustCompile(IPv4RegexPattern)
	CompiledPortRegex = regexp.MustCompile(PortRangeRegexPattern)
	CompiledURLRegex = regexp.MustCompile(URLValidationRegexPattern)
	CompiledDomainRegex = regexp.MustCompile(DomainRegexPattern)
	CompiledCookieRegex = regexp.MustCompile(CookieRegexPattern)
}