604 lines
21 KiB
Go
604 lines
21 KiB
Go
package countryregion
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import (
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"context"
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"database/sql"
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"encoding/json"
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"errors"
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"regexp"
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"strings"
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"time"
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"unicode/utf8"
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"hyapp-admin-server/internal/appctx"
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"hyapp-admin-server/internal/integration/userclient"
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mysqlDriver "github.com/go-sql-driver/mysql"
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)
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const countryRegionCaller = "hyapp-admin-server"
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const regionStatusActive = "active"
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const regionStatusDisabled = "disabled"
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const regionRebuildTaskStatusPending = "pending"
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const maxCountryNameLength = 128
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const maxCountryDisplayNameLength = 128
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const maxCountryFlagLength = 16
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const maxRegionNameLength = 128
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var (
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countryCodePattern = regexp.MustCompile(`^[A-Z]{2,3}$`)
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isoAlpha3Pattern = regexp.MustCompile(`^[A-Z]{3}$`)
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isoNumericPattern = regexp.MustCompile(`^[0-9]{3}$`)
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phoneCountryCodePattern = regexp.MustCompile(`^\+[1-9][0-9]{0,2}$`)
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shortRegionCodePattern = regexp.MustCompile(`^[A-Za-z0-9_]{2,32}$`)
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descriptiveRegionCodePattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9 _-]{1,63}$`)
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errCountryNotFound = errors.New("country not found")
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errCountryInvalid = errors.New("country payload invalid")
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errCountryConflict = errors.New("country already exists")
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errRegionNotFound = errors.New("region not found")
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errRegionInvalid = errors.New("region payload invalid")
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errRegionConflict = errors.New("region already exists")
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errRegionCountryMapping = errors.New("country already belongs to another active region")
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)
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type Service struct {
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userClient userclient.Client
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userDB *sql.DB
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}
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func NewService(userClient userclient.Client, userDB *sql.DB) *Service {
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return &Service{userClient: userClient, userDB: userDB}
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}
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// ListCountries 只编排 user-service 已有 ListCountries RPC，不直接读 user-service 数据库。
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func (s *Service) ListCountries(ctx context.Context, requestID string, enabled *bool) ([]*userclient.Country, error) {
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return s.userClient.ListCountries(ctx, userclient.ListCountriesRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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Enabled: enabled,
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})
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}
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// GetCountry 复用国家列表做详情查询，避免为了后台详情新增 user-service 契约。
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func (s *Service) GetCountry(ctx context.Context, requestID string, countryID int64) (*userclient.Country, error) {
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// user-service 当前已有列表 RPC、没有单国家详情 RPC；国家主数据规模很小，后台详情复用列表结果避免新增服务契约。
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countries, err := s.ListCountries(ctx, requestID, nil)
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if err != nil {
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return nil, err
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}
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for _, country := range countries {
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if country != nil && country.CountryID == countryID {
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return country, nil
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}
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}
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return nil, errCountryNotFound
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}
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// CreateCountry 是后台管理创建国家主数据能力，直接写 user DB，不新增 user-service 后台 RPC。
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func (s *Service) CreateCountry(ctx context.Context, actorID int64, requestID string, req createCountryRequest) (*userclient.Country, error) {
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if s.userDB == nil {
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return nil, errors.New("user db is not configured")
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}
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req = normalizeCreateCountryRequest(req)
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if !validCountryCreateRequest(req) || strings.TrimSpace(requestID) == "" {
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return nil, errCountryInvalid
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}
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enabled := true
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if req.Enabled != nil {
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enabled = *req.Enabled
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}
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nowMs := time.Now().UnixMilli()
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appCode := appctx.FromContext(ctx)
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result, err := s.userDB.ExecContext(ctx, `
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INSERT INTO countries (
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app_code, country_name, country_code, iso_alpha3, iso_numeric, country_display_name,
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phone_country_code, flag, enabled, sort_order,
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created_by_user_id, updated_by_user_id, created_at_ms, updated_at_ms
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)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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`, appCode, req.CountryName, req.CountryCode, nullableString(req.ISOAlpha3), nullableString(req.ISONumeric), req.CountryDisplayName, nullableString(req.PhoneCountryCode), req.Flag, enabled, req.SortOrder, nullableInt64(actorID), nullableInt64(actorID), nowMs, nowMs)
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if err != nil {
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return nil, mapCountryWriteError(err)
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}
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countryID, err := result.LastInsertId()
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if err != nil {
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return nil, err
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}
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return queryCountry(ctx, s.userDB, countryID)
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}
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// UpdateCountry 不转发 countryCode，保持“国家码创建后不可变”的 app 后端规则。
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func (s *Service) UpdateCountry(ctx context.Context, actorID int64, countryID int64, requestID string, req updateCountryRequest) (*userclient.Country, error) {
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return s.userClient.UpdateCountry(ctx, userclient.UpdateCountryRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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CountryID: countryID,
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CountryName: strings.TrimSpace(req.CountryName),
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CountryDisplayName: strings.TrimSpace(req.CountryDisplayName),
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SortOrder: req.SortOrder,
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OperatorUserID: actorID,
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ISOAlpha3: strings.TrimSpace(req.ISOAlpha3),
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ISONumeric: strings.TrimSpace(req.ISONumeric),
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PhoneCountryCode: strings.TrimSpace(req.PhoneCountryCode),
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Flag: strings.TrimSpace(req.Flag),
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})
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}
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// EnableCountry 是后台管理状态开关，只恢复 App 可选入口，不改历史用户国家和区域快照。
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func (s *Service) EnableCountry(ctx context.Context, actorID int64, countryID int64, requestID string) (*userclient.Country, error) {
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return s.setCountryEnabled(ctx, actorID, countryID, strings.TrimSpace(requestID), true)
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}
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// DisableCountry 是国家删除接口背后的后台软删除语义：禁用 App 可选状态，不硬删主数据。
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func (s *Service) DisableCountry(ctx context.Context, actorID int64, countryID int64, requestID string) (*userclient.Country, error) {
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return s.setCountryEnabled(ctx, actorID, countryID, strings.TrimSpace(requestID), false)
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}
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// ListRegions 只编排 user-service 已有 ListRegions RPC，不在 admin-server 维护区域副本。
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func (s *Service) ListRegions(ctx context.Context, requestID string, status string) ([]*userclient.Region, error) {
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return s.userClient.ListRegions(ctx, userclient.ListRegionsRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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Status: strings.TrimSpace(status),
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})
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}
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// GetRegion 按 regionID 读取区域和 active 国家码列表。
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func (s *Service) GetRegion(ctx context.Context, requestID string, regionID int64) (*userclient.Region, error) {
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return s.userClient.GetRegion(ctx, userclient.GetRegionRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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RegionID: regionID,
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})
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}
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// CreateRegion 是后台管理创建区域能力，直接写 user DB 并创建历史用户区域重算任务。
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func (s *Service) CreateRegion(ctx context.Context, actorID int64, requestID string, req createRegionRequest) (*userclient.Region, error) {
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if s.userDB == nil {
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return nil, errors.New("user db is not configured")
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}
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req = normalizeCreateRegionRequest(req)
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if !validRegionCreateRequest(req) || strings.TrimSpace(requestID) == "" {
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return nil, errRegionInvalid
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}
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tx, err := s.userDB.BeginTx(ctx, nil)
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if err != nil {
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return nil, err
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}
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defer tx.Rollback()
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countries, err := canonicalCountryCodes(ctx, tx, req.Countries)
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if err != nil {
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return nil, err
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}
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nowMs := time.Now().UnixMilli()
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appCode := appctx.FromContext(ctx)
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result, err := tx.ExecContext(ctx, `
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INSERT INTO regions (app_code, region_code, name, status, sort_order, created_by_user_id, updated_by_user_id, created_at_ms, updated_at_ms)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
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`, appCode, req.RegionCode, req.Name, regionStatusActive, req.SortOrder, nullableInt64(actorID), nullableInt64(actorID), nowMs, nowMs)
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if err != nil {
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return nil, mapRegionWriteError(err)
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}
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regionID, err := result.LastInsertId()
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if err != nil {
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return nil, err
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}
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for _, country := range countries {
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if _, err := tx.ExecContext(ctx, `
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INSERT INTO region_countries (app_code, region_id, country_code, status, created_by_user_id, updated_by_user_id, created_at_ms, updated_at_ms)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?)
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`, appCode, regionID, country, regionStatusActive, nullableInt64(actorID), nullableInt64(actorID), nowMs, nowMs); err != nil {
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return nil, mapRegionCountryWriteError(err)
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}
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if err := insertRegionRebuildTask(ctx, tx, regionID, country, regionID, nowMs); err != nil {
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return nil, err
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}
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}
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region := &userclient.Region{
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RegionID: regionID,
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RegionCode: req.RegionCode,
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Name: req.Name,
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Status: regionStatusActive,
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Countries: append([]string(nil), countries...),
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SortOrder: req.SortOrder,
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CreatedAtMs: nowMs,
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UpdatedAtMs: nowMs,
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}
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if err := insertRegionChangeLog(ctx, tx, regionID, "create_region", nil, region, actorID, strings.TrimSpace(requestID), nowMs); err != nil {
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return nil, err
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}
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if err := tx.Commit(); err != nil {
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return nil, err
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}
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return queryRegion(ctx, s.userDB, regionID)
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}
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// UpdateRegion 只修改区域展示字段，不改变 countries，避免编辑表单误触发归属重算。
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func (s *Service) UpdateRegion(ctx context.Context, actorID int64, regionID int64, requestID string, req updateRegionRequest) (*userclient.Region, error) {
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return s.userClient.UpdateRegion(ctx, userclient.UpdateRegionRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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RegionID: regionID,
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RegionCode: strings.TrimSpace(req.RegionCode),
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Name: strings.TrimSpace(req.Name),
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SortOrder: req.SortOrder,
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OperatorUserID: actorID,
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})
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}
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// ReplaceRegionCountries 单独替换国家归属；user-service 会负责释放旧映射并创建用户区域重算任务。
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func (s *Service) ReplaceRegionCountries(ctx context.Context, actorID int64, regionID int64, requestID string, req replaceRegionCountriesRequest) (*userclient.Region, error) {
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return s.userClient.ReplaceRegionCountries(ctx, userclient.ReplaceRegionCountriesRequest{
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RequestID: strings.TrimSpace(requestID),
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Caller: countryRegionCaller,
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RegionID: regionID,
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Countries: append([]string(nil), req.Countries...),
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OperatorUserID: actorID,
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})
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}
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// EnableRegion 是后台管理状态开关，只更新 user DB 区域状态，不新增 user-service 契约。
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func (s *Service) EnableRegion(ctx context.Context, actorID int64, regionID int64, requestID string) (*userclient.Region, error) {
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return s.setRegionEnabled(ctx, actorID, regionID, strings.TrimSpace(requestID), true)
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}
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// DisableRegion 是后台管理状态开关：停用区域并释放 active 国家归属。
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func (s *Service) DisableRegion(ctx context.Context, actorID int64, regionID int64, requestID string) (*userclient.Region, error) {
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return s.setRegionEnabled(ctx, actorID, regionID, strings.TrimSpace(requestID), false)
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}
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func (s *Service) setRegionEnabled(ctx context.Context, actorID int64, regionID int64, requestID string, enabled bool) (*userclient.Region, error) {
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if s.userDB == nil {
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return nil, errors.New("user db is not configured")
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}
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tx, err := s.userDB.BeginTx(ctx, nil)
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if err != nil {
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return nil, err
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}
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defer tx.Rollback()
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before, err := queryRegionForUpdate(ctx, tx, regionID)
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if err != nil {
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return nil, err
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}
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nowMs := time.Now().UnixMilli()
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nextStatus := regionStatusDisabled
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operation := "disable_region"
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if enabled {
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nextStatus = regionStatusActive
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operation = "enable_region"
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}
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if _, err := tx.ExecContext(ctx, `
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UPDATE regions
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SET status = ?, updated_by_user_id = ?, updated_at_ms = ?
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WHERE app_code = ? AND region_id = ?
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`, nextStatus, nullableInt64(actorID), nowMs, appctx.FromContext(ctx), regionID); err != nil {
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return nil, err
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}
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after := *before
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after.Status = nextStatus
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after.UpdatedAtMs = nowMs
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if !enabled {
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if _, err := tx.ExecContext(ctx, `
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UPDATE region_countries
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SET status = ?, updated_by_user_id = ?, updated_at_ms = ?
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WHERE app_code = ? AND region_id = ? AND status = ?
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`, regionStatusDisabled, nullableInt64(actorID), nowMs, appctx.FromContext(ctx), regionID, regionStatusActive); err != nil {
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return nil, err
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}
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for _, country := range before.Countries {
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if err := insertRegionRebuildTask(ctx, tx, regionID, country, 0, nowMs); err != nil {
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return nil, err
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}
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}
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after.Countries = nil
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}
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if err := insertRegionChangeLog(ctx, tx, regionID, operation, before, &after, actorID, requestID, nowMs); err != nil {
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return nil, err
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}
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if err := tx.Commit(); err != nil {
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return nil, err
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}
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return queryRegion(ctx, s.userDB, regionID)
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}
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func (s *Service) setCountryEnabled(ctx context.Context, actorID int64, countryID int64, requestID string, enabled bool) (*userclient.Country, error) {
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if s.userDB == nil {
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return nil, errors.New("user db is not configured")
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}
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if countryID <= 0 || strings.TrimSpace(requestID) == "" {
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return nil, errCountryInvalid
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}
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result, err := s.userDB.ExecContext(ctx, `
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UPDATE countries
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SET enabled = ?, updated_by_user_id = ?, updated_at_ms = ?
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WHERE app_code = ? AND country_id = ?
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`, enabled, nullableInt64(actorID), time.Now().UnixMilli(), appctx.FromContext(ctx), countryID)
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if err != nil {
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return nil, err
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}
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if affected, err := result.RowsAffected(); err != nil {
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return nil, err
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} else if affected == 0 {
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return nil, errCountryNotFound
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}
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return queryCountry(ctx, s.userDB, countryID)
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}
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type regionQueryer interface {
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QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)
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QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
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}
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func queryCountry(ctx context.Context, q regionQueryer, countryID int64) (*userclient.Country, error) {
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var country userclient.Country
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if err := q.QueryRowContext(ctx, `
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SELECT country_id, country_name, country_code,
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COALESCE(iso_alpha3, ''), COALESCE(iso_numeric, ''),
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country_display_name, COALESCE(phone_country_code, ''), COALESCE(flag, ''), enabled,
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sort_order, created_at_ms, updated_at_ms
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FROM countries
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WHERE app_code = ? AND country_id = ?
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`, appctx.FromContext(ctx), countryID).Scan(
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&country.CountryID,
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&country.CountryName,
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&country.CountryCode,
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&country.ISOAlpha3,
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&country.ISONumeric,
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&country.CountryDisplayName,
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&country.PhoneCountryCode,
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&country.Flag,
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&country.Enabled,
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&country.SortOrder,
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&country.CreatedAtMs,
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&country.UpdatedAtMs,
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); err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return nil, errCountryNotFound
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}
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return nil, err
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}
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return &country, nil
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}
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func queryRegionForUpdate(ctx context.Context, tx *sql.Tx, regionID int64) (*userclient.Region, error) {
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return scanRegion(ctx, tx, `
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SELECT region_id, region_code, name, status, sort_order, created_at_ms, updated_at_ms
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FROM regions
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WHERE app_code = ? AND region_id = ?
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FOR UPDATE
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`, appctx.FromContext(ctx), regionID)
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}
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func queryRegion(ctx context.Context, q regionQueryer, regionID int64) (*userclient.Region, error) {
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return scanRegion(ctx, q, `
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SELECT region_id, region_code, name, status, sort_order, created_at_ms, updated_at_ms
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FROM regions
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WHERE app_code = ? AND region_id = ?
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`, appctx.FromContext(ctx), regionID)
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}
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func scanRegion(ctx context.Context, q regionQueryer, query string, args ...any) (*userclient.Region, error) {
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var region userclient.Region
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if err := q.QueryRowContext(ctx, query, args...).Scan(
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®ion.RegionID,
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®ion.RegionCode,
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®ion.Name,
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®ion.Status,
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®ion.SortOrder,
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®ion.CreatedAtMs,
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®ion.UpdatedAtMs,
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); err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return nil, errRegionNotFound
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}
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return nil, err
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}
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countries, err := activeCountriesForRegion(ctx, q, region.RegionID)
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if err != nil {
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return nil, err
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}
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region.Countries = countries
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return ®ion, nil
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}
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func activeCountriesForRegion(ctx context.Context, q regionQueryer, regionID int64) ([]string, error) {
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rows, err := q.QueryContext(ctx, `
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SELECT country_code
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FROM region_countries
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WHERE app_code = ? AND region_id = ? AND status = ?
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ORDER BY country_code ASC
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`, appctx.FromContext(ctx), regionID, regionStatusActive)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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countries := []string{}
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for rows.Next() {
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var country string
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if err := rows.Scan(&country); err != nil {
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return nil, err
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}
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countries = append(countries, country)
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}
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return countries, rows.Err()
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}
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func insertRegionRebuildTask(ctx context.Context, tx *sql.Tx, regionID int64, countryCode string, targetRegionID int64, nowMs int64) error {
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_, err := tx.ExecContext(ctx, `
|
||
INSERT INTO user_region_rebuild_tasks (app_code, region_id, country_code, target_region_id, mapping_revision, status, cursor_user_id, created_at_ms, updated_at_ms)
|
||
VALUES (?, ?, ?, ?, ?, ?, 0, ?, ?)
|
||
`, appctx.FromContext(ctx), nullableInt64(regionID), countryCode, nullableInt64(targetRegionID), nowMs, regionRebuildTaskStatusPending, nowMs, nowMs)
|
||
return err
|
||
}
|
||
|
||
func insertRegionChangeLog(ctx context.Context, tx *sql.Tx, regionID int64, operation string, before *userclient.Region, after *userclient.Region, actorID int64, requestID string, nowMs int64) error {
|
||
beforeJSON, err := nullableJSON(before)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
afterJSON, err := nullableJSON(after)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
_, err = tx.ExecContext(ctx, `
|
||
INSERT INTO region_change_logs (app_code, region_id, operation, before_json, after_json, operator_user_id, request_id, created_at_ms)
|
||
VALUES (?, ?, ?, ?, ?, ?, ?, ?)
|
||
`, appctx.FromContext(ctx), nullableInt64(regionID), operation, beforeJSON, afterJSON, nullableInt64(actorID), requestID, nowMs)
|
||
return err
|
||
}
|
||
|
||
func nullableJSON(value any) (any, error) {
|
||
if value == nil {
|
||
return nil, nil
|
||
}
|
||
body, err := json.Marshal(value)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
return string(body), nil
|
||
}
|
||
|
||
func nullableInt64(value int64) any {
|
||
if value <= 0 {
|
||
return nil
|
||
}
|
||
return value
|
||
}
|
||
|
||
func nullableString(value string) any {
|
||
if strings.TrimSpace(value) == "" {
|
||
return nil
|
||
}
|
||
return value
|
||
}
|
||
|
||
func normalizeCreateCountryRequest(req createCountryRequest) createCountryRequest {
|
||
req.CountryName = strings.TrimSpace(req.CountryName)
|
||
req.CountryCode = strings.ToUpper(strings.TrimSpace(req.CountryCode))
|
||
req.ISOAlpha3 = strings.ToUpper(strings.TrimSpace(req.ISOAlpha3))
|
||
req.ISONumeric = strings.TrimSpace(req.ISONumeric)
|
||
req.CountryDisplayName = strings.TrimSpace(req.CountryDisplayName)
|
||
req.PhoneCountryCode = strings.TrimSpace(req.PhoneCountryCode)
|
||
req.Flag = strings.TrimSpace(req.Flag)
|
||
return req
|
||
}
|
||
|
||
func validCountryCreateRequest(req createCountryRequest) bool {
|
||
if !countryCodePattern.MatchString(req.CountryCode) {
|
||
return false
|
||
}
|
||
if req.CountryName == "" || utf8.RuneCountInString(req.CountryName) > maxCountryNameLength {
|
||
return false
|
||
}
|
||
if req.CountryDisplayName == "" || utf8.RuneCountInString(req.CountryDisplayName) > maxCountryDisplayNameLength {
|
||
return false
|
||
}
|
||
if req.ISOAlpha3 != "" && !isoAlpha3Pattern.MatchString(req.ISOAlpha3) {
|
||
return false
|
||
}
|
||
if req.ISONumeric != "" && !isoNumericPattern.MatchString(req.ISONumeric) {
|
||
return false
|
||
}
|
||
if req.PhoneCountryCode != "" && !phoneCountryCodePattern.MatchString(req.PhoneCountryCode) {
|
||
return false
|
||
}
|
||
return utf8.RuneCountInString(req.Flag) <= maxCountryFlagLength
|
||
}
|
||
|
||
func mapCountryWriteError(err error) error {
|
||
var mysqlErr *mysqlDriver.MySQLError
|
||
if errors.As(err, &mysqlErr) && mysqlErr.Number == 1062 {
|
||
return errCountryConflict
|
||
}
|
||
return err
|
||
}
|
||
|
||
func normalizeCreateRegionRequest(req createRegionRequest) createRegionRequest {
|
||
req.RegionCode = normalizeRegionCode(req.RegionCode)
|
||
req.Name = strings.TrimSpace(req.Name)
|
||
req.Countries = append([]string(nil), req.Countries...)
|
||
return req
|
||
}
|
||
|
||
func normalizeRegionCode(code string) string {
|
||
code = strings.TrimSpace(code)
|
||
if shortRegionCodePattern.MatchString(code) {
|
||
return strings.ToUpper(code)
|
||
}
|
||
return strings.Join(strings.Fields(code), " ")
|
||
}
|
||
|
||
func validRegionCreateRequest(req createRegionRequest) bool {
|
||
if !validRegionCode(req.RegionCode) {
|
||
return false
|
||
}
|
||
if req.Name == "" || utf8.RuneCountInString(req.Name) > maxRegionNameLength {
|
||
return false
|
||
}
|
||
return len(req.Countries) > 0
|
||
}
|
||
|
||
func validRegionCode(code string) bool {
|
||
return shortRegionCodePattern.MatchString(code) || descriptiveRegionCodePattern.MatchString(code)
|
||
}
|
||
|
||
func canonicalCountryCodes(ctx context.Context, q regionQueryer, countries []string) ([]string, error) {
|
||
if len(countries) == 0 {
|
||
return nil, errRegionInvalid
|
||
}
|
||
seen := make(map[string]struct{}, len(countries))
|
||
result := make([]string, 0, len(countries))
|
||
for _, input := range countries {
|
||
countryCode := strings.ToUpper(strings.TrimSpace(input))
|
||
if !countryCodePattern.MatchString(countryCode) {
|
||
return nil, errRegionInvalid
|
||
}
|
||
var canonical string
|
||
err := q.QueryRowContext(ctx, `
|
||
SELECT country_code
|
||
FROM countries
|
||
WHERE app_code = ? AND country_code = ?
|
||
`, appctx.FromContext(ctx), countryCode).Scan(&canonical)
|
||
if errors.Is(err, sql.ErrNoRows) {
|
||
return nil, errRegionInvalid
|
||
}
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
if _, exists := seen[canonical]; exists {
|
||
return nil, errRegionInvalid
|
||
}
|
||
seen[canonical] = struct{}{}
|
||
result = append(result, canonical)
|
||
}
|
||
return result, nil
|
||
}
|
||
|
||
func mapRegionWriteError(err error) error {
|
||
var mysqlErr *mysqlDriver.MySQLError
|
||
if errors.As(err, &mysqlErr) && mysqlErr.Number == 1062 {
|
||
return errRegionConflict
|
||
}
|
||
return err
|
||
}
|
||
|
||
func mapRegionCountryWriteError(err error) error {
|
||
var mysqlErr *mysqlDriver.MySQLError
|
||
if errors.As(err, &mysqlErr) && mysqlErr.Number == 1062 {
|
||
return errRegionCountryMapping
|
||
}
|
||
return err
|
||
}
|