feat: 门户网站初始提交

- Go + Gin + html/template 服务端渲染 - 主页：Google 风格搜索框 + 导航卡片 - 后台：卡片 CRUD、搜索引擎配置、主页背景/标题配置 - 图片上传：支持 jpg/jpeg/png/gif，自动压缩，缩略图参数 ?thumb=1 - 安全：登录日志、修改密码、IP 自动封禁、IP 白名单 - 访问统计：主页访问/卡片点击/搜索追踪、实时流量、IP 统计 - SQLite 存储（modernc.org/sqlite，纯 Go） - 内存 Session + bcrypt 密码哈希
2026-05-28 13:54:07 +08:00
commit c16a8dfbc4
42 changed files with 5295 additions and 0 deletions
@@ -0,0 +1,193 @@
+package models
+
+import (
+	"fmt"
+	"time"
+
+	"simple_portal/database"
+)
+
+// 访问动作类型常量
+const (
+	ActionTypeVisit  = "visit"  // 主页访问
+	ActionTypeClick  = "click"  // 卡片点击
+	ActionTypeSearch = "search" // 搜索
+)
+
+// AccessLog 表示一条访问日志记录。
+type AccessLog struct {
+	ID         int       `json:"id"`
+	IP         string    `json:"ip"`
+	UserAgent  string    `json:"user_agent"`
+	ActionType string    `json:"action_type"` // visit / click / search
+	Detail     string    `json:"detail"`      // 卡片标题 / 搜索关键词
+	Referer    string    `json:"referer"`
+	CreatedAt  time.Time `json:"created_at"`
+}
+
+// CreateAccessLog 插入一条访问日志。
+func CreateAccessLog(ip, userAgent, actionType, detail, referer string) error {
+	_, err := database.DB.Exec(
+		"INSERT INTO access_logs (ip, user_agent, action_type, detail, referer, created_at) VALUES (?, ?, ?, ?, ?, ?)",
+		ip, userAgent, actionType, detail, referer, time.Now().Format("2006-01-02 15:04:05"),
+	)
+	if err != nil {
+		return fmt.Errorf("failed to create access log: %w", err)
+	}
+	return nil
+}
+
+// AccessLogStats 访问统计数据
+type AccessLogStats struct {
+	TodayViews int `json:"today_views"` // 今日浏览次数
+	TotalViews int `json:"total_views"` // 总浏览次数
+	NewIPs     int `json:"new_ips"`     // 今日新IP数量
+	TotalIPs   int `json:"total_ips"`   // 总IP数量
+}
+
+// GetAccessLogStats 获取访问统计数据
+func GetAccessLogStats() (*AccessLogStats, error) {
+	stats := &AccessLogStats{}
+
+	// 今日浏览次数
+	err := database.DB.QueryRow(
+		"SELECT COUNT(*) FROM access_logs WHERE date(created_at) = date('now', 'localtime')",
+	).Scan(&stats.TodayViews)
+	if err != nil {
+		return nil, fmt.Errorf("failed to count today views: %w", err)
+	}
+
+	// 总浏览次数
+	err = database.DB.QueryRow("SELECT COUNT(*) FROM access_logs").Scan(&stats.TotalViews)
+	if err != nil {
+		return nil, fmt.Errorf("failed to count total views: %w", err)
+	}
+
+	// 总IP数量
+	err = database.DB.QueryRow("SELECT COUNT(DISTINCT ip) FROM access_logs").Scan(&stats.TotalIPs)
+	if err != nil {
+		return nil, fmt.Errorf("failed to count total IPs: %w", err)
+	}
+
+	// 今日新IP数量（今日访问但之前从未出现过的IP）
+	err = database.DB.QueryRow(`
+		SELECT COUNT(DISTINCT a1.ip)
+		FROM access_logs a1
+		WHERE date(a1.created_at) = date('now', 'localtime')
+		  AND NOT EXISTS (
+			SELECT 1 FROM access_logs a2
+			WHERE a2.ip = a1.ip AND date(a2.created_at) < date('now', 'localtime')
+		  )
+	`).Scan(&stats.NewIPs)
+	if err != nil {
+		return nil, fmt.Errorf("failed to count new IPs: %w", err)
+	}
+
+	return stats, nil
+}
+
+// GetRecentAccessLogs 获取最近的访问日志（用于实时流量展示）
+func GetRecentAccessLogs(limit int) ([]AccessLog, error) {
+	rows, err := database.DB.Query(
+		"SELECT id, ip, user_agent, action_type, detail, referer, created_at FROM access_logs ORDER BY created_at DESC LIMIT ?",
+		limit,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to query recent access logs: %w", err)
+	}
+	defer rows.Close()
+
+	var logs []AccessLog
+	for rows.Next() {
+		var l AccessLog
+		if err := rows.Scan(&l.ID, &l.IP, &l.UserAgent, &l.ActionType, &l.Detail, &l.Referer, &l.CreatedAt); err != nil {
+			return nil, fmt.Errorf("failed to scan access log: %w", err)
+		}
+		logs = append(logs, l)
+	}
+	return logs, rows.Err()
+}
+
+// GetAccessLogs 分页获取访问日志，支持按IP和动作类型筛选。
+func GetAccessLogs(page, pageSize int, filterIP, filterAction string) ([]AccessLog, int, error) {
+	// 构建查询条件
+	where := "WHERE 1=1"
+	args := []interface{}{}
+
+	if filterIP != "" {
+		where += " AND ip LIKE ?"
+		args = append(args, "%"+filterIP+"%")
+	}
+	if filterAction != "" {
+		where += " AND action_type = ?"
+		args = append(args, filterAction)
+	}
+
+	// 获取总数
+	var total int
+	countArgs := make([]interface{}, len(args))
+	copy(countArgs, args)
+	err := database.DB.QueryRow("SELECT COUNT(*) FROM access_logs "+where, countArgs...).Scan(&total)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to count access logs: %w", err)
+	}
+
+	// 分页查询
+	offset := (page - 1) * pageSize
+	if offset < 0 {
+		offset = 0
+	}
+	queryArgs := append(args, pageSize, offset)
+	rows, err := database.DB.Query(
+		"SELECT id, ip, user_agent, action_type, detail, referer, created_at FROM access_logs "+where+" ORDER BY created_at DESC LIMIT ? OFFSET ?",
+		queryArgs...,
+	)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to query access logs: %w", err)
+	}
+	defer rows.Close()
+
+	var logs []AccessLog
+	for rows.Next() {
+		var l AccessLog
+		if err := rows.Scan(&l.ID, &l.IP, &l.UserAgent, &l.ActionType, &l.Detail, &l.Referer, &l.CreatedAt); err != nil {
+			return nil, 0, fmt.Errorf("failed to scan access log: %w", err)
+		}
+		logs = append(logs, l)
+	}
+	return logs, total, rows.Err()
+}
+
+// GetAccessLogStatsByIP 获取按IP统计的访问数据
+func GetAccessLogStatsByIP(limit int) ([]struct {
+	IP       string `json:"ip"`
+	Visits   int    `json:"visits"`
+	LastSeen string `json:"last_seen"`
+}, error) {
+	rows, err := database.DB.Query(
+		"SELECT ip, COUNT(*) as visits, MAX(created_at) as last_seen FROM access_logs GROUP BY ip ORDER BY visits DESC LIMIT ?",
+		limit,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to query IP stats: %w", err)
+	}
+	defer rows.Close()
+
+	var result []struct {
+		IP       string `json:"ip"`
+		Visits   int    `json:"visits"`
+		LastSeen string `json:"last_seen"`
+	}
+	for rows.Next() {
+		var r struct {
+			IP       string `json:"ip"`
+			Visits   int    `json:"visits"`
+			LastSeen string `json:"last_seen"`
+		}
+		if err := rows.Scan(&r.IP, &r.Visits, &r.LastSeen); err != nil {
+			return nil, fmt.Errorf("failed to scan IP stats: %w", err)
+		}
+		result = append(result, r)
+	}
+	return result, rows.Err()
+}