434 lines
13 KiB
Go
434 lines
13 KiB
Go
package logic
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import (
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"context"
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"encoding/json"
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"sort"
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"strconv"
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"strings"
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"time"
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"github.com/gogf/gf/v2/errors/gcode"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/os/gtime"
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v1 "tool-api/api/user/v1"
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"tool-api/internal/consts"
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"tool-api/internal/model/entity"
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)
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// ============================================================================
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// 年会域：公开查座（免登录）
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// 依据：PRD-02 §4.2.3（鉴权与隐私边界）、R7-11~R7-24；架构 §3.2.9、§4.4 图④、§8.6.2。
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//
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// 三条红线：
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// 1) 只查已发布活动（status=published），否则 4005；
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// 2) 姓名+手机号双因子精确匹配，失败文案统一模糊（防枚举）；
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// 3) 结果最小化：只返回本人桌座 + 本人所在桌示意，绝不返回他人信息 / 名单 / 统计。
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//
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// 限流/冷却无 Redis，以 event_seat_queries 时间窗 COUNT 为准（表为权威源）。
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// ============================================================================
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// seatLookup 命中结果（本人所在桌座）
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type seatLookup struct {
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TableId int64
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TableNo string
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TableName string
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SeatNo int
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Capacity int
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// 本人桌圆心（hall_layout 大厅逻辑坐标系；缺省 0）
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TableX int
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TableY int
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}
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// seatGuardInput 限流/冷却判定入参（纯函数入参，便于单测）
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type seatGuardInput struct {
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CountLastMinute int
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CountLastHour int
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ConsecutiveFails int
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LastFailAt *time.Time
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Now time.Time
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CooldownMinutes int
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Threshold int
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PerMinute int
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PerHour int
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}
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func gcodeEventUnavailable() gcode.Code {
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return gcode.New(consts.CodeEventUnavailable, "", nil)
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}
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func gcodeSeat(code int) gcode.Code {
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return gcode.New(code, "", nil)
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}
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// seatBusyMessage 4006/4007 共用文案（§8.1 允许前端合并展示）
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func seatBusyMessage() string {
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return "操作过于频繁，请稍后再试"
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}
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// seatNotFoundMessage 双因子不匹配/未录入/未分配座位共用文案（防枚举）
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func seatNotFoundMessage() string {
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return "未查询到您的座位信息，请联系活动组织者确认是否已录入"
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}
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// ============================================================================
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// 纯函数
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// ============================================================================
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// judgeSeatGuard 返回限流判定码：0 放行 / 4006 超频 / 4007 冷却中。
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func judgeSeatGuard(in seatGuardInput) int {
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if in.PerMinute > 0 && in.CountLastMinute >= in.PerMinute {
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return consts.CodeSeatRateLimited
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}
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if in.PerHour > 0 && in.CountLastHour >= in.PerHour {
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return consts.CodeSeatRateLimited
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}
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if in.LastFailAt != nil && in.Threshold > 0 && in.ConsecutiveFails >= in.Threshold {
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cooldown := time.Duration(in.CooldownMinutes) * time.Minute
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if cooldown > 0 && in.Now.Sub(*in.LastFailAt) < cooldown {
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return consts.CodeSeatCooling
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}
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}
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return 0
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}
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// consecutiveFails 计算最近连续失败次数（results 需按时间倒序，最近在前）。
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func consecutiveFails(results []int) int {
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n := 0
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for _, r := range results {
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if r == 0 {
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n++
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continue
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}
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break
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}
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return n
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}
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// maskPhone 手机号脱敏：中间 4 位打码（138****0000，PRD-02 Q15）。
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func maskPhone(p string) string {
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if p == "" {
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return ""
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}
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if len(p) <= 4 {
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return strings.Repeat("*", len(p))
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}
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if len(p) >= 7 {
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return p[:3] + "****" + p[len(p)-4:]
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}
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return p[:2] + "***" + p[len(p)-2:]
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}
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// parseStage 从 hall_layout JSON 解析舞台信息；无舞台/解析失败返回 nil（不阻断查座）。
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func parseStage(layout string) *v1.StageOut {
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if strings.TrimSpace(layout) == "" {
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return nil
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}
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var parsed struct {
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Stage struct {
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X int `json:"x"`
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Y int `json:"y"`
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W int `json:"w"`
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H int `json:"h"`
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Shape string `json:"shape"`
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Rotation int `json:"rotation"`
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Color string `json:"color"`
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} `json:"stage"`
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}
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if err := json.Unmarshal([]byte(layout), &parsed); err != nil {
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return nil
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}
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s := parsed.Stage
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if s.W == 0 && s.H == 0 && s.Shape == "" {
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return nil
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}
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return &v1.StageOut{X: s.X, Y: s.Y, W: s.W, H: s.H, Shape: s.Shape, Rotation: s.Rotation, Color: s.Color}
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}
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// 大厅逻辑坐标系缺省尺寸（与设计器 hall_layout.canvas 缺省一致：qitongxue-admin Designer.vue canvas:{w:1600,h:1200}）。
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const (
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defaultHallW = 1600
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defaultHallH = 1200
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)
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// parseCanvas 从 hall_layout JSON 解析大厅逻辑宽高（canvas.w / canvas.h）。
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// 空串 / 解析失败 / 值 ≤0 → 回退 1600×1200（不阻断查座，风格与 parseStage 一致）。
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func parseCanvas(layout string) (w, h int) {
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w, h = defaultHallW, defaultHallH
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if strings.TrimSpace(layout) == "" {
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return
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}
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var parsed struct {
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Canvas struct {
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W int `json:"w"`
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H int `json:"h"`
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} `json:"canvas"`
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}
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if err := json.Unmarshal([]byte(layout), &parsed); err != nil {
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return
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}
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if parsed.Canvas.W > 0 {
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w = parsed.Canvas.W
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}
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if parsed.Canvas.H > 0 {
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h = parsed.Canvas.H
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}
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return
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}
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// buildSeatCells 生成「本人所在桌」示意：只含座位号 + 是否本人 + 是否有人（不含身份）。
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func buildSeatCells(seats []seatBrief, selfNo int) []v1.SeatCell {
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sorted := append([]seatBrief(nil), seats...)
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sort.SliceStable(sorted, func(i, j int) bool { return sorted[i].SeatNo < sorted[j].SeatNo })
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out := make([]v1.SeatCell, 0, len(sorted))
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for _, s := range sorted {
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out = append(out, v1.SeatCell{
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SeatNo: s.SeatNo,
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IsSelf: s.SeatNo == selfNo,
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Filled: s.EmployeeId != 0,
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})
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}
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return out
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}
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// validSeatQueryInput 查座入参校验（姓名非空≤32、手机号为 6~20 位数字）。
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func validSeatQueryInput(name, phone string) bool {
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if name == "" || len([]rune(name)) > 32 {
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return false
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}
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return validPhone(phone)
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}
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// ============================================================================
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// 公开接口
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// ============================================================================
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// EventInfo 活动公开信息（查座页顶部）。活动不存在 → 4005；未发布时 CanQuery=false。
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func EventInfo(ctx context.Context, req *v1.EventInfoReq) (*v1.EventInfoRes, error) {
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event, err := publicEventRow(ctx, req.EventId)
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if err != nil {
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return nil, err
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}
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return &v1.EventInfoRes{
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Title: event.Title,
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Venue: event.Venue,
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EventTime: formatGTime(event.EventTime),
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Status: event.Status,
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CanQuery: event.Status == consts.EventStatusPublished,
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Stage: parseStage(event.HallLayout),
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}, nil
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}
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// EventSeatQuery 扫码查座（免登录）：限流 → 双因子精确匹配 → 结果最小化 → 审计。
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func EventSeatQuery(ctx context.Context, req *v1.EventSeatQueryReq) (*v1.EventSeatQueryRes, error) {
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event, err := publicEventRow(ctx, req.EventId)
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if err != nil {
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return nil, err
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}
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if event.Status != consts.EventStatusPublished {
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return nil, gerror.NewCode(gcodeEventUnavailable(), "活动未开放查询")
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}
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ip := clientIp(ctx)
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openid := "" // 查座免登录，无 openid
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// 限流 / 冷却闸门（被拦的请求不写审计，避免自锁）
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if code := seatGuardVerdict(ctx, req.EventId, ip); code != 0 {
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return nil, gerror.NewCode(gcodeSeat(code), seatBusyMessage())
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}
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name := strings.TrimSpace(req.Name)
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phone := normalizePhone(req.Phone)
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// 参数异常 → 拒绝，并计入一次失败（防刷）
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if !validSeatQueryInput(name, phone) {
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writeSeatAudit(ctx, req.EventId, openid, ip, phone, 0)
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return nil, gerror.NewCode(gcode.CodeValidationFailed, "请填写正确的姓名与手机号")
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}
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lookup, err := lookupSeat(ctx, req.EventId, name, phone)
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if err != nil {
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return nil, err
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}
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if lookup == nil {
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writeSeatAudit(ctx, req.EventId, openid, ip, phone, 0)
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return &v1.EventSeatQueryRes{Found: false, Message: seatNotFoundMessage()}, nil
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}
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res, err := buildSeatQueryRes(ctx, event, lookup)
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if err != nil {
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return nil, err
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}
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writeSeatAudit(ctx, req.EventId, openid, ip, phone, 1)
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return res, nil
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}
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// ============================================================================
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// 内部实现
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// ============================================================================
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// publicEventRow 读取活动；不存在 → 4005。
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func publicEventRow(ctx context.Context, eventId int64) (*entity.AnnualEvents, error) {
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record, err := g.Model(consts.TableAnnualEvents).Where("id", eventId).One()
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if err != nil {
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return nil, err
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}
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if record.IsEmpty() {
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return nil, gerror.NewCode(gcodeEventUnavailable(), "活动不存在或未开放查询")
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}
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event := &entity.AnnualEvents{}
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if err = record.Struct(event); err != nil {
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return nil, err
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}
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return event, nil
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}
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// lookupSeat 双因子精确匹配：本人须在企业员工库、且在该活动候场名单、且已绑定座位。
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func lookupSeat(ctx context.Context, eventId int64, name, phone string) (*seatLookup, error) {
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const sql = "SELECT s.table_id AS table_id, s.seat_no AS seat_no " +
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"FROM employees e " +
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"JOIN event_participants p ON p.employee_id = e.id AND p.event_id = ? " +
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"JOIN event_seats s ON s.employee_id = e.id AND s.event_id = ? " +
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"WHERE e.name = ? AND e.phone = ? LIMIT 1"
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records, err := g.DB().GetAll(ctx, sql, eventId, eventId, name, phone)
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if err != nil {
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return nil, err
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}
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if len(records) == 0 {
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return nil, nil
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}
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tableId := records[0]["table_id"].Int64()
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seatNo := records[0]["seat_no"].Int()
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table, err := g.Model(consts.TableEventTables).Where("id", tableId).Where("event_id", eventId).One()
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if err != nil {
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return nil, err
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}
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if table.IsEmpty() {
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return nil, nil
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}
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return &seatLookup{
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TableId: tableId,
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TableNo: table["table_no"].String(),
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TableName: table["name"].String(),
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SeatNo: seatNo,
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Capacity: table["capacity"].Int(),
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TableX: table["x"].Int(),
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TableY: table["y"].Int(),
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}, nil
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}
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// buildSeatQueryRes 组装最小化返回体（本人桌座 + 本桌示意 + 舞台）。
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func buildSeatQueryRes(ctx context.Context, event *entity.AnnualEvents, lookup *seatLookup) (*v1.EventSeatQueryRes, error) {
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briefs, err := loadSeatBriefs(ctx, g.DB(), event.Id, lookup.TableId)
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if err != nil {
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return nil, err
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}
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// hall_w / hall_h 取自 hall_layout.canvas（缺省 1600/1200）——只用于前端缩放，
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// 与舞台同源解析，不引入额外查询。
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hallW, hallH := parseCanvas(event.HallLayout)
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return &v1.EventSeatQueryRes{
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Found: true,
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Message: "ok",
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TableNo: lookup.TableNo,
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TableName: lookup.TableName,
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SeatNo: lookup.SeatNo,
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Capacity: lookup.Capacity,
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Seats: buildSeatCells(briefs, lookup.SeatNo),
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Stage: parseStage(event.HallLayout),
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TableX: lookup.TableX,
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TableY: lookup.TableY,
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HallW: hallW,
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HallH: hallH,
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}, nil
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}
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// seatGuardVerdict 计算限流/冷却判定码（0 放行）。查询异常时放行（宁漏不误伤）。
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func seatGuardVerdict(ctx context.Context, eventId int64, ip string) int {
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perMin, perHour, cooldownMin, threshold := seatGuardParams(ctx)
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now := gtime.Now()
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cntMin, err := g.Model(consts.TableEventSeatQueries).
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Where("event_id", eventId).Where("ip", ip).
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WhereGTE("created_at", now.Add(-time.Minute)).Count()
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if err != nil {
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return 0
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}
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cntHour, err := g.Model(consts.TableEventSeatQueries).
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Where("event_id", eventId).Where("ip", ip).
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WhereGTE("created_at", now.Add(-time.Hour)).Count()
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if err != nil {
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return 0
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}
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rows, err := g.Model(consts.TableEventSeatQueries).
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Where("event_id", eventId).Where("ip", ip).
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OrderDesc("id").Limit(20).All()
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if err != nil {
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return 0
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}
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results := make([]int, 0, len(rows))
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var lastFailAt *time.Time
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for i, r := range rows {
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res := r["result"].Int()
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results = append(results, res)
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if i == 0 && res == 0 {
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if t := r["created_at"].GTime(); t != nil {
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lastFailAt = &t.Time
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}
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}
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}
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return judgeSeatGuard(seatGuardInput{
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CountLastMinute: cntMin,
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CountLastHour: cntHour,
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ConsecutiveFails: consecutiveFails(results),
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LastFailAt: lastFailAt,
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Now: now.Time,
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CooldownMinutes: cooldownMin,
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Threshold: threshold,
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PerMinute: perMin,
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PerHour: perHour,
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})
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}
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// seatGuardParams 读取阈值（settings 覆盖 > 缺省）。
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func seatGuardParams(ctx context.Context) (perMin, perHour, cooldownMin, threshold int) {
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perMin = settingInt(ctx, consts.SettingSeatRateLimitPerMin, consts.DefaultSeatRateLimitPerMin)
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perHour = settingInt(ctx, consts.SettingSeatRateLimitPerHour, consts.DefaultSeatRateLimitPerHour)
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cooldownMin = settingInt(ctx, consts.SettingSeatFailCooldownMinutes, consts.DefaultSeatFailCooldownMinutes)
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threshold = settingInt(ctx, consts.SettingSeatFailThreshold, consts.DefaultSeatFailThreshold)
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return
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}
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// settingInt 读 settings 整数配置；缺失/非法用默认值。
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func settingInt(ctx context.Context, key string, def int) int {
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raw := SettingValue(ctx, key)
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if v, err := strconv.Atoi(strings.TrimSpace(raw)); err == nil && v > 0 {
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return v
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}
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return def
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}
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// writeSeatAudit 写审计（成功/失败都写），手机号脱敏。
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func writeSeatAudit(ctx context.Context, eventId int64, openid, ip, phone string, result int) {
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if _, err := g.Model(consts.TableEventSeatQueries).Data(g.Map{
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"event_id": eventId,
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"openid": openid,
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"ip": ip,
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"phone_masked": maskPhone(phone),
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"result": result,
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"created_at": gtime.Now(),
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}).Insert(); err != nil {
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g.Log().Warningf(ctx, "[event-seat] 写查座审计失败: %v", err)
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}
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}
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// clientIp 取客户端 IP（无请求上下文时为空串）。
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func clientIp(ctx context.Context) string {
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req := g.RequestFromCtx(ctx)
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if req == nil {
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return ""
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}
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return req.GetClientIp()
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}
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