175 lines
3.5 KiB
Go
175 lines
3.5 KiB
Go
package news
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import (
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"fmt"
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"strings"
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"time"
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"dk/internal/database"
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)
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// News represents a news post in the game
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type News struct {
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ID int
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Author int
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Posted int64
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Content string
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}
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// New creates a new News with sensible defaults
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func New() *News {
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return &News{
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Author: 0,
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Posted: time.Now().Unix(),
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Content: "",
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}
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}
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// Validate checks if news has valid values
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func (n *News) Validate() error {
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if n.Posted < 0 {
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return fmt.Errorf("news Posted timestamp cannot be negative")
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}
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if strings.TrimSpace(n.Content) == "" {
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return fmt.Errorf("news Content cannot be empty")
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}
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return nil
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}
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// CRUD operations
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func (n *News) Delete() error {
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return database.Exec("DELETE FROM news WHERE id = %d", n.ID)
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}
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func (n *News) Insert() error {
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id, err := database.Insert("news", n, "ID")
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if err != nil {
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return err
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}
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n.ID = int(id)
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return nil
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}
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// Query functions
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func Find(id int) (*News, error) {
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var news News
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err := database.Get(&news, "SELECT * FROM news WHERE id = %d", id)
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if err != nil {
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return nil, fmt.Errorf("news with ID %d not found", id)
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}
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return &news, nil
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}
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func All() ([]*News, error) {
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var news []*News
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err := database.Select(&news, "SELECT * FROM news ORDER BY posted DESC, id DESC")
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return news, err
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}
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func ByAuthor(authorID int) ([]*News, error) {
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var news []*News
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err := database.Select(&news, "SELECT * FROM news WHERE author = %d ORDER BY posted DESC, id DESC", authorID)
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return news, err
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}
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func Recent(limit int) ([]*News, error) {
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var news []*News
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err := database.Select(&news, "SELECT * FROM news ORDER BY posted DESC, id DESC LIMIT %d", limit)
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return news, err
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}
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func Since(since int64) ([]*News, error) {
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var news []*News
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err := database.Select(&news, "SELECT * FROM news WHERE posted >= %d ORDER BY posted DESC, id DESC", since)
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return news, err
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}
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func Between(start, end int64) ([]*News, error) {
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var news []*News
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err := database.Select(&news, "SELECT * FROM news WHERE posted >= %d AND posted <= %d ORDER BY posted DESC, id DESC", start, end)
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return news, err
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}
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func Search(term string) ([]*News, error) {
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var news []*News
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searchTerm := "%" + term + "%"
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err := database.Select(&news, "SELECT * FROM news WHERE content LIKE %s ORDER BY posted DESC, id DESC", searchTerm)
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return news, err
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}
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// Helper methods
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func (n *News) PostedTime() time.Time {
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return time.Unix(n.Posted, 0)
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}
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func (n *News) SetPostedTime(t time.Time) {
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n.Posted = t.Unix()
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}
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func (n *News) IsRecent() bool {
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return time.Since(n.PostedTime()) < 24*time.Hour
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}
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func (n *News) Age() time.Duration {
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return time.Since(n.PostedTime())
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}
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func (n *News) ReadableTime() string {
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return n.PostedTime().Format("Jan 2, 2006 3:04 PM")
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}
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func (n *News) IsAuthor(userID int) bool {
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return n.Author == userID
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}
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func (n *News) Preview(maxLength int) string {
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if len(n.Content) <= maxLength {
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return n.Content
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}
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if maxLength < 3 {
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return n.Content[:maxLength]
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}
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return n.Content[:maxLength-3] + "..."
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}
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func (n *News) WordCount() int {
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if n.Content == "" {
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return 0
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}
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// Simple word count by splitting on spaces
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words := 0
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inWord := false
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for _, char := range n.Content {
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if char == ' ' || char == '\t' || char == '\n' || char == '\r' {
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if inWord {
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words++
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inWord = false
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}
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} else {
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inWord = true
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}
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}
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if inWord {
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words++
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}
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return words
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}
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func (n *News) Length() int {
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return len(n.Content)
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}
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func (n *News) Contains(term string) bool {
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return strings.Contains(strings.ToLower(n.Content), strings.ToLower(term))
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}
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func (n *News) IsEmpty() bool {
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return strings.TrimSpace(n.Content) == ""
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}
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