Version: 0.9.78.dev.260506
This commit is contained in:
Losita
294
backend/services/taskclassforum/sv/helpers.go
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294
backend/services/taskclassforum/sv/helpers.go
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package sv
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import (
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"encoding/json"
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"fmt"
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"sort"
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"strings"
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"time"
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"github.com/LoveLosita/smartflow/backend/shared/respond"
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forummodel "github.com/LoveLosita/smartflow/backend/services/taskclassforum/model"
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forumcontracts "github.com/LoveLosita/smartflow/backend/shared/contracts/taskclassforum"
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)
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const (
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defaultPage = 1
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defaultPageSize = 20
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maxPageSize = 50
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maxPostTitleLen = 40
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maxSummaryLen = 300
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maxTagCount = 5
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maxTagLength = 12
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maxCommentLen = 500
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maxImportTitle = 80
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)
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func normalizePage(page int, pageSize int) (int, int) {
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if page <= 0 {
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page = defaultPage
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}
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if pageSize <= 0 {
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pageSize = defaultPageSize
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}
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if pageSize > maxPageSize {
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pageSize = maxPageSize
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}
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return page, pageSize
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}
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func pageResult(page int, pageSize int, total int64) forumcontracts.PageResult {
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return forumcontracts.PageResult{
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Page: page,
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PageSize: pageSize,
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Total: int(total),
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HasMore: int64(page*pageSize) < total,
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}
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}
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func normalizeTags(tags []string) ([]string, error) {
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result := make([]string, 0, len(tags))
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seen := make(map[string]struct{}, len(tags))
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for _, raw := range tags {
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tag := strings.TrimSpace(raw)
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if tag == "" {
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continue
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}
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if len([]rune(tag)) > maxTagLength {
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return nil, respond.ParamTooLong
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}
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if _, exists := seen[tag]; exists {
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continue
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}
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seen[tag] = struct{}{}
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result = append(result, tag)
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if len(result) > maxTagCount {
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return nil, respond.ParamTooLong
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}
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}
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return result, nil
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}
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func validateRuneMax(value string, maxLen int) error {
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if len([]rune(strings.TrimSpace(value))) > maxLen {
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return respond.ParamTooLong
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}
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return nil
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}
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func tagsToJSON(tags []string) (string, error) {
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if tags == nil {
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tags = []string{}
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}
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raw, err := json.Marshal(tags)
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if err != nil {
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return "", err
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}
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return string(raw), nil
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}
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func tagsFromJSON(raw string) []string {
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var tags []string
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if err := json.Unmarshal([]byte(raw), &tags); err != nil {
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return []string{}
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}
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return tags
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}
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func intSliceToJSONPtr(values []int) (*string, error) {
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if values == nil {
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values = []int{}
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}
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raw, err := json.Marshal(values)
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if err != nil {
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return nil, err
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}
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result := string(raw)
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return &result, nil
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}
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func stringSliceToJSONPtr(values []string) (*string, error) {
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if values == nil {
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values = []string{}
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}
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raw, err := json.Marshal(values)
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if err != nil {
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return nil, err
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}
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result := string(raw)
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return &result, nil
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}
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func intSliceFromJSONPtr(raw *string) []int {
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if raw == nil || strings.TrimSpace(*raw) == "" {
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return []int{}
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}
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var values []int
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if err := json.Unmarshal([]byte(*raw), &values); err != nil {
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return []int{}
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}
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return values
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}
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func stringSliceFromJSONPtr(raw *string) []string {
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if raw == nil || strings.TrimSpace(*raw) == "" {
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return []string{}
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}
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var values []string
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if err := json.Unmarshal([]byte(*raw), &values); err != nil {
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return []string{}
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}
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return values
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}
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func parseSnapshotDate(value string) *time.Time {
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if strings.TrimSpace(value) == "" {
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return nil
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}
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parsed, err := time.ParseInLocation("2006-01-02", strings.TrimSpace(value), time.Local)
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if err != nil {
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return nil
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}
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return &parsed
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}
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func formatDate(value *time.Time) string {
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if value == nil || value.IsZero() {
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return ""
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}
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return value.Format("2006-01-02")
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}
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func formatTime(value time.Time) string {
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if value.IsZero() {
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return ""
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}
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return value.Format(time.RFC3339)
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}
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func formatTimePtr(value *time.Time) *string {
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if value == nil || value.IsZero() {
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return nil
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}
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formatted := value.Format(time.RFC3339)
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return &formatted
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}
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func userBrief(userID uint64) forumcontracts.UserBrief {
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return forumcontracts.UserBrief{
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UserID: userID,
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Nickname: fmt.Sprintf("用户%d", userID),
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}
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}
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func countersFromPost(post forummodel.ForumPost) forumcontracts.ForumPostCounters {
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return forumcontracts.ForumPostCounters{
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LikeCount: post.LikeCount,
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CommentCount: post.CommentCount,
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ImportCount: post.ImportCount,
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}
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}
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func viewerState(postID uint64, liked map[uint64]bool, imported map[uint64]bool) forumcontracts.ForumPostViewerState {
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return forumcontracts.ForumPostViewerState{
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Liked: liked[postID],
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ImportedOnce: imported[postID],
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}
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}
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func templateSummaryFromTemplate(template *forummodel.ForumPostTemplate, itemCount int) forumcontracts.TemplateSummary {
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if template == nil {
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return forumcontracts.TemplateSummary{}
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}
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return forumcontracts.TemplateSummary{
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TaskCount: itemCount,
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Mode: template.Mode,
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StartDate: formatDate(template.StartDate),
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EndDate: formatDate(template.EndDate),
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StrategyLabels: stringSliceFromJSONPtr(template.StrategyLabelsJSON),
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}
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}
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func postBriefFromModel(post forummodel.ForumPost, template *forummodel.ForumPostTemplate, itemCount int, state forumcontracts.ForumPostViewerState) forumcontracts.ForumPostBrief {
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return forumcontracts.ForumPostBrief{
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PostID: post.ID,
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Title: post.Title,
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Summary: post.Summary,
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Tags: tagsFromJSON(post.TagsJSON),
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Author: userBrief(post.AuthorUserID),
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TemplateSummary: templateSummaryFromTemplate(template, itemCount),
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Counters: countersFromPost(post),
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ViewerState: state,
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Status: post.Status,
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CreatedAt: formatTime(post.CreatedAt),
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}
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}
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func templateDetailFromModel(template forummodel.ForumPostTemplate, items []forummodel.ForumPostTemplateItem) forumcontracts.TemplateDetail {
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sort.SliceStable(items, func(i, j int) bool {
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return items[i].Order < items[j].Order
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})
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preview := make([]forumcontracts.TemplateItemPreview, 0, len(items))
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for _, item := range items {
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preview = append(preview, forumcontracts.TemplateItemPreview{
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ItemID: item.ID,
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Order: item.Order,
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Content: item.Content,
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})
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}
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return forumcontracts.TemplateDetail{
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Mode: template.Mode,
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StartDate: formatDate(template.StartDate),
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EndDate: formatDate(template.EndDate),
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StrategyLabels: stringSliceFromJSONPtr(template.StrategyLabelsJSON),
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TaskCount: len(items),
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ItemsPreview: preview,
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}
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}
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func snapshotFromTemplate(post forummodel.ForumPost, template forummodel.ForumPostTemplate, items []forummodel.ForumPostTemplateItem) TaskClassSnapshot {
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sort.SliceStable(items, func(i, j int) bool {
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return items[i].Order < items[j].Order
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})
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snapshotItems := make([]TaskClassSnapshotItem, 0, len(items))
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for _, item := range items {
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snapshotItems = append(snapshotItems, TaskClassSnapshotItem{
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TaskItemID: item.SourceTaskItemID,
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Order: item.Order,
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Content: item.Content,
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})
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}
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return TaskClassSnapshot{
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TaskClassID: template.SourceTaskClassID,
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Title: post.Title,
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Mode: template.Mode,
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StartDate: formatDate(template.StartDate),
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EndDate: formatDate(template.EndDate),
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SubjectType: template.SubjectType,
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DifficultyLevel: template.DifficultyLevel,
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CognitiveIntensity: template.CognitiveIntensity,
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TotalSlots: template.TotalSlots,
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AllowFillerCourse: template.AllowFillerCourse,
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Strategy: template.Strategy,
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ExcludedSlots: intSliceFromJSONPtr(template.ExcludedSlotsJSON),
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ExcludedDaysOfWeek: intSliceFromJSONPtr(template.ExcludedDaysOfWeekJSON),
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StrategyLabels: stringSliceFromJSONPtr(template.StrategyLabelsJSON),
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Items: snapshotItems,
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ConfigSnapshotJSON: stringFromPtr(template.ConfigSnapshotJSON),
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}
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}
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func stringFromPtr(value *string) string {
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if value == nil {
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return ""
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}
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return *value
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}
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func stringPtrFromNonEmpty(value string) *string {
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trimmed := strings.TrimSpace(value)
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if trimmed == "" {
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return nil
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}
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return &trimmed
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}
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