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 +1,224 @@
+package models
+
+import (
+	"database/sql"
+	"fmt"
+
+	"simple_portal/database"
+)
+
+// Card represents a navigation card on the portal home page.
+type Card struct {
+	ID        int    `json:"id"`
+	Icon      string `json:"icon"`
+	Title     string `json:"title"`
+	Subtitle  string `json:"subtitle"`
+	URL       string `json:"url"`
+	Sort      int    `json:"sort"`
+	Enabled   bool   `json:"enabled"`
+	CreatedAt string `json:"created_at"`
+}
+
+// GetAllCards returns all cards ordered by sort ascending.
+func GetAllCards() ([]Card, error) {
+	rows, err := database.DB.Query("SELECT id, icon, title, subtitle, url, sort, enabled, created_at FROM cards ORDER BY sort ASC")
+	if err != nil {
+		return nil, fmt.Errorf("failed to query cards: %w", err)
+	}
+	defer rows.Close()
+
+	var cards []Card
+	for rows.Next() {
+		var c Card
+		var enabled int
+		if err := rows.Scan(&c.ID, &c.Icon, &c.Title, &c.Subtitle, &c.URL, &c.Sort, &enabled, &c.CreatedAt); err != nil {
+			return nil, fmt.Errorf("failed to scan card: %w", err)
+		}
+		c.Enabled = enabled == 1
+		cards = append(cards, c)
+	}
+	return cards, rows.Err()
+}
+
+// GetEnabledCards returns only enabled cards ordered by sort ascending.
+func GetEnabledCards() ([]Card, error) {
+	rows, err := database.DB.Query("SELECT id, icon, title, subtitle, url, sort, enabled, created_at FROM cards WHERE enabled = 1 ORDER BY sort ASC")
+	if err != nil {
+		return nil, fmt.Errorf("failed to query enabled cards: %w", err)
+	}
+	defer rows.Close()
+
+	var cards []Card
+	for rows.Next() {
+		var c Card
+		var enabled int
+		if err := rows.Scan(&c.ID, &c.Icon, &c.Title, &c.Subtitle, &c.URL, &c.Sort, &enabled, &c.CreatedAt); err != nil {
+			return nil, fmt.Errorf("failed to scan card: %w", err)
+		}
+		c.Enabled = enabled == 1
+		cards = append(cards, c)
+	}
+	return cards, rows.Err()
+}
+
+// GetCardByID returns a single card by its ID.
+func GetCardByID(id int) (*Card, error) {
+	var c Card
+	var enabled int
+	err := database.DB.QueryRow(
+		"SELECT id, icon, title, subtitle, url, sort, enabled, created_at FROM cards WHERE id = ?",
+		id,
+	).Scan(&c.ID, &c.Icon, &c.Title, &c.Subtitle, &c.URL, &c.Sort, &enabled, &c.CreatedAt)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to query card by id: %w", err)
+	}
+	c.Enabled = enabled == 1
+	return &c, nil
+}
+
+// CreateCard inserts a new card with sort = MAX(sort) + 1.
+func CreateCard(card *Card) error {
+	var maxSort sql.NullInt64
+	err := database.DB.QueryRow("SELECT MAX(sort) FROM cards").Scan(&maxSort)
+	if err != nil {
+		return fmt.Errorf("failed to get max sort: %w", err)
+	}
+
+	newSort := 0
+	if maxSort.Valid {
+		newSort = int(maxSort.Int64) + 1
+	}
+
+	enabledInt := 0
+	if card.Enabled {
+		enabledInt = 1
+	}
+
+	result, err := database.DB.Exec(
+		"INSERT INTO cards (icon, title, subtitle, url, sort, enabled) VALUES (?, ?, ?, ?, ?, ?)",
+		card.Icon, card.Title, card.Subtitle, card.URL, newSort, enabledInt,
+	)
+	if err != nil {
+		return fmt.Errorf("failed to insert card: %w", err)
+	}
+
+	lastID, err := result.LastInsertId()
+	if err != nil {
+		return fmt.Errorf("failed to get last insert id: %w", err)
+	}
+	card.ID = int(lastID)
+	card.Sort = newSort
+	return nil
+}
+
+// UpdateCard updates an existing card by ID.
+func UpdateCard(card *Card) error {
+	enabledInt := 0
+	if card.Enabled {
+		enabledInt = 1
+	}
+
+	_, err := database.DB.Exec(
+		"UPDATE cards SET icon = ?, title = ?, subtitle = ?, url = ?, sort = ?, enabled = ? WHERE id = ?",
+		card.Icon, card.Title, card.Subtitle, card.URL, card.Sort, enabledInt, card.ID,
+	)
+	if err != nil {
+		return fmt.Errorf("failed to update card: %w", err)
+	}
+	return nil
+}
+
+// DeleteCard deletes a card by ID.
+func DeleteCard(id int) error {
+	_, err := database.DB.Exec("DELETE FROM cards WHERE id = ?", id)
+	if err != nil {
+		return fmt.Errorf("failed to delete card: %w", err)
+	}
+	return nil
+}
+
+// ToggleCard toggles the enabled status of a card.
+func ToggleCard(id int) error {
+	_, err := database.DB.Exec("UPDATE cards SET enabled = CASE WHEN enabled = 1 THEN 0 ELSE 1 END WHERE id = ?", id)
+	if err != nil {
+		return fmt.Errorf("failed to toggle card: %w", err)
+	}
+	return nil
+}
+
+// MoveCardUp swaps the sort value of the card with the one above it.
+func MoveCardUp(id int) error {
+	// Get the current card
+	card, err := GetCardByID(id)
+	if err != nil || card == nil {
+		return fmt.Errorf("card not found: %d", id)
+	}
+
+	// Find the card with the next lower sort value (the one above)
+	var aboveCard Card
+	var aboveEnabled int
+	err = database.DB.QueryRow(
+		"SELECT id, icon, title, subtitle, url, sort, enabled, created_at FROM cards WHERE sort < ? ORDER BY sort DESC LIMIT 1",
+		card.Sort,
+	).Scan(&aboveCard.ID, &aboveCard.Icon, &aboveCard.Title, &aboveCard.Subtitle, &aboveCard.URL, &aboveCard.Sort, &aboveEnabled, &aboveCard.CreatedAt)
+	if err == sql.ErrNoRows {
+		// Already at the top
+		return nil
+	}
+	if err != nil {
+		return fmt.Errorf("failed to find card above: %w", err)
+	}
+	aboveCard.Enabled = aboveEnabled == 1
+
+	// Swap sort values
+	_, err = database.DB.Exec("UPDATE cards SET sort = ? WHERE id = ?", aboveCard.Sort, card.ID)
+	if err != nil {
+		return fmt.Errorf("failed to swap sort (current): %w", err)
+	}
+	_, err = database.DB.Exec("UPDATE cards SET sort = ? WHERE id = ?", card.Sort, aboveCard.ID)
+	if err != nil {
+		return fmt.Errorf("failed to swap sort (above): %w", err)
+	}
+
+	return nil
+}
+
+// MoveCardDown swaps the sort value of the card with the one below it.
+func MoveCardDown(id int) error {
+	// Get the current card
+	card, err := GetCardByID(id)
+	if err != nil || card == nil {
+		return fmt.Errorf("card not found: %d", id)
+	}
+
+	// Find the card with the next higher sort value (the one below)
+	var belowCard Card
+	var belowEnabled int
+	err = database.DB.QueryRow(
+		"SELECT id, icon, title, subtitle, url, sort, enabled, created_at FROM cards WHERE sort > ? ORDER BY sort ASC LIMIT 1",
+		card.Sort,
+	).Scan(&belowCard.ID, &belowCard.Icon, &belowCard.Title, &belowCard.Subtitle, &belowCard.URL, &belowCard.Sort, &belowEnabled, &belowCard.CreatedAt)
+	if err == sql.ErrNoRows {
+		// Already at the bottom
+		return nil
+	}
+	if err != nil {
+		return fmt.Errorf("failed to find card below: %w", err)
+	}
+	belowCard.Enabled = belowEnabled == 1
+
+	// Swap sort values
+	_, err = database.DB.Exec("UPDATE cards SET sort = ? WHERE id = ?", belowCard.Sort, card.ID)
+	if err != nil {
+		return fmt.Errorf("failed to swap sort (current): %w", err)
+	}
+	_, err = database.DB.Exec("UPDATE cards SET sort = ? WHERE id = ?", card.Sort, belowCard.ID)
+	if err != nil {
+		return fmt.Errorf("failed to swap sort (below): %w", err)
+	}
+
+	return nil
+}