package model

import "time"

// ProxyProtocol 代理协议类型
type ProxyProtocol string

const (
	ProtoHTTP   ProxyProtocol = "http"
	ProtoHTTPS  ProxyProtocol = "https"
	ProtoSOCKS5 ProxyProtocol = "socks5"
)

// ProxyStatus 代理状态
type ProxyStatus string

const (
	StatusUnknown ProxyStatus = "unknown"
	StatusAlive   ProxyStatus = "alive"
	StatusDead    ProxyStatus = "dead"
)

// Proxy 代理实体
type Proxy struct {
	ID string // uuid

	Protocol ProxyProtocol
	Host     string
	Port     int
	Username string
	Password string

	Group string
	Tags  []string

	Status      ProxyStatus
	Score       int
	LatencyMs   int64
	LastCheckAt time.Time

	FailCount    int
	SuccessCount int
	Disabled     bool

	CreatedAt time.Time
	UpdatedAt time.Time
}

// HealthPatch 健康度更新补丁
type HealthPatch struct {
	Status      *ProxyStatus
	ScoreDelta  int
	LatencyMs   *int64
	CheckedAt   *time.Time
	FailInc     int
	SuccessInc  int
}

// TestSpec 测试规格
type TestSpec struct {
	URL            string
	Method         string
	Timeout        time.Duration
	ExpectStatus   []int
	ExpectContains string
}

// TestResult 测试结果
type TestResult struct {
	ProxyID   string
	OK        bool
	LatencyMs int64
	ErrorText string
	CheckedAt time.Time
}

// Lease 租约
type Lease struct {
	LeaseID  string
	ProxyID  string
	Proxy    Proxy
	ExpireAt time.Time
	Group    string
	Site     string
}

// ProxyQuery 代理查询条件
type ProxyQuery struct {
	Group       string
	TagsAny     []string
	StatusIn    []ProxyStatus
	OnlyEnabled bool
	Limit       int
	OrderBy     string // "random", "score", "latency"，默认按 score 降序
}

// InvalidLine 无效行记录
type InvalidLine struct {
	Raw    string `json:"raw"`
	Reason string `json:"reason"`
}

// SelectRequest 代理选择请求
type SelectRequest struct {
	Group   string
	Site    string
	Policy  string // round_robin, random, weighted
	TagsAny []string
}

// ImportInput 导入输入参数
type ImportInput struct {
	Group        string
	Tags         []string
	ProtocolHint string // auto, http, https, socks5
}

// ImportResult 导入结果
type ImportResult struct {
	Imported     int           `json:"imported"`
	Duplicated   int           `json:"duplicated"`
	Invalid      int           `json:"invalid"`
	InvalidItems []InvalidLine `json:"invalid_items,omitempty"`
}

// TestSummary 测试摘要
type TestSummary struct {
	Tested int `json:"tested"`
	Alive  int `json:"alive"`
	Dead   int `json:"dead"`
}

// TestBatchResult 批量测试结果
type TestBatchResult struct {
	Summary TestSummary  `json:"summary"`
	Results []TestResult `json:"results"`
}

// NextProxyResponse 获取下一个代理的响应
type NextProxyResponse struct {
	Proxy   ProxyInfo `json:"proxy"`
	LeaseID string    `json:"lease_id"`
	TTLMs   int64     `json:"ttl_ms"`
}

// ProxyInfo 代理信息（用于 API 响应）
type ProxyInfo struct {
	ID       string        `json:"id"`
	Protocol ProxyProtocol `json:"protocol"`
	Host     string        `json:"host"`
	Port     int           `json:"port"`
	Username string        `json:"username,omitempty"`
	Password string        `json:"password,omitempty"`
}

// ReportRequest 上报请求
type ReportRequest struct {
	LeaseID   string `json:"lease_id"`
	ProxyID   string `json:"proxy_id"`
	Success   bool   `json:"success"`
	Error     string `json:"error,omitempty"`
	LatencyMs int64  `json:"latency_ms"`
}

// TestRequest 测试请求
type TestRequest struct {
	Group       string      `json:"group"`
	Filter      ProxyFilter `json:"filter"`
	TestSpec    TestSpecReq `json:"test_spec"`
	Concurrency int         `json:"concurrency"`
	UpdateStore bool        `json:"update_store"`
	WriteLog    bool        `json:"write_log"`
}

// ProxyFilter 代理过滤条件
type ProxyFilter struct {
	Status  []string `json:"status"`
	TagsAny []string `json:"tags_any"`
	Limit   int      `json:"limit"`
}

// TestSpecReq 测试规格请求
type TestSpecReq struct {
	URL            string `json:"url"`
	Method         string `json:"method"`
	TimeoutMs      int    `json:"timeout_ms"`
	ExpectStatus   []int  `json:"expect_status"`
	ExpectContains string `json:"expect_contains"`
}

// ImportTextRequest 文本导入请求
type ImportTextRequest struct {
	Group        string   `json:"group"`
	Tags         []string `json:"tags"`
	ProtocolHint string   `json:"protocol_hint"`
	Text         string   `json:"text"`
}

// ProxyListQuery 代理列表查询条件（带分页）
type ProxyListQuery struct {
	Group       string
	TagsAny     []string
	StatusIn    []ProxyStatus
	OnlyEnabled bool
	Offset      int
	Limit       int
}

// ProxyListResponse 代理列表分页响应
type ProxyListResponse struct {
	Data   []Proxy `json:"data"`
	Total  int     `json:"total"`
	Offset int     `json:"offset"`
	Limit  int     `json:"limit"`
}

// ProxyPatch 代理更新补丁
type ProxyPatch struct {
	Group    *string   `json:"group,omitempty"`
	Tags     *[]string `json:"tags,omitempty"`
	AddTags  []string  `json:"add_tags,omitempty"`
	Disabled *bool     `json:"disabled,omitempty"`
}

// BulkDeleteRequest 批量删除请求
type BulkDeleteRequest struct {
	IDs      []string    `json:"ids,omitempty"`
	Status   ProxyStatus `json:"status,omitempty"`
	Group    string      `json:"group,omitempty"`
	Disabled *bool       `json:"disabled,omitempty"`
}

// BulkDeleteResponse 批量删除响应
type BulkDeleteResponse struct {
	Deleted int `json:"deleted"`
}

// SingleTestRequest 单个代理测试请求
type SingleTestRequest struct {
	URL            string `json:"url"`
	Method         string `json:"method,omitempty"`
	TimeoutMs      int    `json:"timeout_ms,omitempty"`
	ExpectStatus   []int  `json:"expect_status,omitempty"`
	ExpectContains string `json:"expect_contains,omitempty"`
	UpdateStore    bool   `json:"update_store"`
	WriteLog       bool   `json:"write_log"`
}

// ProxyStats 代理统计信息
type ProxyStats struct {
	Total        int                   `json:"total"`
	ByStatus     map[ProxyStatus]int   `json:"by_status"`
	ByGroup      map[string]int        `json:"by_group"`
	ByProtocol   map[ProxyProtocol]int `json:"by_protocol"`
	Disabled     int                   `json:"disabled"`
	AvgLatencyMs int64                 `json:"avg_latency_ms"`
	AvgScore     float64               `json:"avg_score"`
}